JavaEye问答 JavaEye问答 - 软件开发技术专题问答社区 http://www.javaeye.com UTF-8 Copyright 2003-2008, JavaEye.com http://blogs.law.harvard.edu/tech/rss JavaEye - 做最棒的软件开发交流社区 树节点的数据如何进行过滤 JavaEye网站 作者: talentkai  链接：http://www.javaeye.com/problems/3389  发表时间: 2008年08月28日
最后遇到个项目，需要展示个树结构。
数据库结构：
部门ID, 父类部门ID(部门ID） 部门名称

数据取出没什么问题，但有个关键的问题 就是要对数据进行过滤
比如，数据有三条

20 0 广东
30 20 东莞
31 20 佛山

40 20 GPRS
50 40 东莞
51 40 佛山

原始数据也就是


广东 |-- 东莞
|-- 佛山
|-- GPRS
|--- 东莞
|--- 佛山



我需要取出部门名称是”东莞“的节点数据:



广东 |－－ 东莞
|－－ GPRS
|--- 东莞



请问 怎么进行数据处理啊 ？ 有什么好的算法，或者好的代码处理,谢谢帮忙！


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]]> Thu, 28 Aug 2008 20:35:27 +0800 http://www.javaeye.com/problems/3389 http://www.javaeye.com/problems/3389 SWT问题 JavaEye网站 作者: hszhsh  链接：http://www.javaeye.com/problems/3388  发表时间: 2008年08月28日
网络问题，发重了- -!


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]]> Thu, 28 Aug 2008 19:49:37 +0800 http://www.javaeye.com/problems/3388 http://www.javaeye.com/problems/3388 关于多线程和对象池化的使用 JavaEye网站 作者: mickeymak  链接：http://www.javaeye.com/problems/3387  发表时间: 2008年08月28日
最近写了一个对象池和一个多线程测试程序, 不过输出结果不是很令人满意, 所以在此想请各位指点一二看看我的程序哪里有问题. 谢谢~~

//对象池工厂 
package com.hsbc.objectpool.general;

public class ObjectPoolFactory {
	
	private static ObjectPoolFactory objectPoolFactory;		//singleton
	
	/**
	 * 
	 */
	private ObjectPoolFactory(){
		super();
	}
	
	/**
	 * 
	 * @return
	 */
	public static ObjectPoolFactory getInstance(){
		
		if(objectPoolFactory==null){
			return new ObjectPoolFactory();
		}
		return objectPoolFactory;
	}
	
	/**
	 * 
	 * @param paramObj
	 * @param classType
	 * @return
	 */
	public ObjectPool createPool(ParameterObject paramObj, Class classType){
		return new ObjectPool(paramObj, classType);
	}
	
	/**
	 * 
	 * @param objectPool
	 */
	public void destroyPool(ObjectPool objectPool){
		objectPool = null;
	}
}



//对象池 
package com.hsbc.objectpool.general;
import java.util.Vector;

public class ObjectPool {
	
	private ParameterObject paramObj;	//该对象池的属性参数对象
	private Class classType;			//该对象池中所存放对象的类型
	private Object currentObj;			//该对象池当前可以借出的对象
	private Vector pool;				//用于存放对象的池, Vector是一个stack, 所以pool是一个对象栈池
	
	/**
	 * 
	 * @param paramObj
	 * @param classType
	 */
	public ObjectPool(ParameterObject paramObj, Class classType) {

		//ObjectPool利用一个java.util.Vector作为可扩展的对象池，
		//并通过它的构造函数来指定池化对象的 Class类型及对象池的一些属性
		this.paramObj = paramObj;
		this.classType = classType;
		pool = new Vector();

		//创建所有对象并放进pool中
		for(int i=0;i<this.paramObj.getMaxCount();i++){
			PoolableObjectFactory objFactory = PoolableObjectFactory.getInstance();
			pool.add(objFactory.createObject(classType));
		}
	}
	
	
	/**
	 * 
	 * @return
	 */
	public Object borrowObject() {
		
		if(pool.size()>0){
			
			System.out.println("pool中有可用的对象" + pool.size() + "个");
			//如果pool中有可用的对象就返回pool栈中第一个可用的对象
			currentObj = pool.firstElement();
			
			//删除pool中刚借出的对象，注意removeElementAt(0)只是删除pool中指向该对象的引用，该对象在内存中还是存在的
			pool.removeElementAt(0);
			return currentObj;
		} else {
			System.out.println("pool中没有可用的对象, 请耐心等待");
			//如果当前池中无对象可用，就只能等待其它线程返回对象到池中
			synchronized(this) {
				try {
					wait();
				} catch (InterruptedException e) {
					System.out.println(e.getMessage());
					e.printStackTrace();
				}
				currentObj = pool.firstElement();
				pool.removeElementAt(0);
				return currentObj;
			}
		}		
	}
	
	
	/**
	 * 当return一个对象时, pool就会追加该对象
	 * @param obj
	 */
	public void returnObject(Object obj) {
		// 确保对象具有正确的类型
		//if (obj.getClass().isInstance(classType)) {
			//TODO: 因为obj是之前对象栈池的第一个元素, 如果该对象是有状态的需要考虑是否还原到对象的初始状态
			//例如: obj是一个BufferString, 在之前的一次使用中append了一个字串"hello", 当return到pool中的
			//时候就要清楚该"hello"字串, 否则当该对象下一次被借出并append新的字串时会包含上一次使用时append
			//的"hello"字串
			//System.out.println("obj is: "+obj.toString()+", 归还对象到pool中");
			((StringBuffer)obj).delete(0, ((StringBuffer)obj).length());	//恢复对象初始状态
			pool.addElement(obj);	//把使用完的对象放回pool中
			synchronized (this) {
				notifyAll();
			}
		//} else {
		//	throw new IllegalArgumentException("该对象池不能存放指定的对象类型");
		//}
	}
}


//对象池参数 
package com.hsbc.objectpool.general;

public class ParameterObject {
	
	private int maxCount;
	private int minCount;
	
	/**
	 * 
	 * @param maxCount
	 * @param minCount
	 */
	public ParameterObject(int maxCount, int minCount){
		this.maxCount = maxCount;
		this.minCount = minCount;
	}
		
	public int getMaxCount() {
		return maxCount;
	}
	public void setMaxCount(int maxCount) {
		this.maxCount = maxCount;
	}
	public int getMinCount() {
		return minCount;
	}
	public void setMinCount(int minCount) {
		this.minCount = minCount;
	}
}


//对象池化工厂 
package com.hsbc.objectpool.general;

public class PoolableObjectFactory {
	
	private static PoolableObjectFactory poolableObjectFactory;		//singleton
	
	/**
	 * 
	 */
	private PoolableObjectFactory(){
		super();
	}
	
	/**
	 * 
	 * @return
	 */
	public static PoolableObjectFactory getInstance(){
		
		if(poolableObjectFactory==null){
			return new PoolableObjectFactory();
		}
		return poolableObjectFactory;
	}
	
	/**
	 * 
	 * @param classType
	 * @return
	 * @throws InstantiationException
	 * @throws IllegalAccessException
	 */
	public Object createObject(Class classType) {
		Object obj = null;
		try {
			obj = classType.newInstance();
		} catch (InstantiationException e) {
			
		} catch (IllegalAccessException e) {
			throw new IllegalArgumentException("classType参数错误");
		}
		return obj;
	}
	
	//TODO: 从内存中删除该对象
	public void destroyObject(Object obj){
		obj = null;
	}

}


//测试程序 
package com.hsbc.objectpool.general;

/**
 * 通用对象池的演示
 * @author Mickey Mak
 *
 */
public class TestGeneralObjectPool implements Runnable  {
	
	private static ObjectPool pool;
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		
		System.out.println("创建对象池");
		//创建对象池工厂
		ObjectPoolFactory poolFactory = ObjectPoolFactory. getInstance ();
		
		//定义所创建对象池的属性
		ParameterObject paraObj = new ParameterObject(1,1);
		
		//利用对象池工厂,创建一个存放StringBuffer类型对象的对象池
		pool = poolFactory.createPool(paraObj,StringBuffer.class);
		//TODO: this pool should be stored in cache for further use
		
		//编写几个独立的线程去借出使用并归还对象
	    System.out.println(Thread.currentThread().getName() + " 线程运行开始!");
	    TestGeneralObjectPool test = new TestGeneralObjectPool();
	    Thread thread1 = new Thread(test);
	    Thread thread2 = new Thread(test);
	    Thread thread3 = new Thread(test);
	    thread1.start();
	    thread2.start();
	    thread3.start();
	    System.out.println(Thread.currentThread().getName() + " 线程运行结束!");
		}
	
	public void run() {
	    System.out.println(Thread.currentThread().getName() + " 线程运行开始!");
	    for (int i = 0; i < 10; i++) {
	    	 System.out.println(Thread.currentThread().getName() + "尝试借出对象");
	        StringBuffer buffer = (StringBuffer)pool.borrowObject();
	        buffer.append(Thread.currentThread().getName() + ", " + String.valueOf(i));
	        System.out.println(buffer.toString());
	        
	        //等待5秒然后再归还该对象到pool
	        try {
	        	Thread.sleep(5000);
	        } catch (InterruptedException e) {
	            e.printStackTrace();
	        }
	        pool.returnObject(buffer);	        
	    }
	    System.out.println(Thread.currentThread().getName() + " 线程运行结束!");
	}

}


输出的结果为: 
创建对象池
main 线程运行开始!
Thread-0 线程运行开始!
main 线程运行结束!
Thread-0尝试借出对象
pool中有可用的对象1个
Thread-2 线程运行开始!
Thread-0, 0
Thread-2尝试借出对象
Thread-1 线程运行开始!
pool中没有可用的对象, 请耐心等待
Thread-1尝试借出对象
pool中没有可用的对象, 请耐心等待
Thread-0尝试借出对象
pool中有可用的对象1个
Thread-0, 1
Exception in thread "Thread-1" java.util.NoSuchElementException
	at java.util.Vector.firstElement(Unknown Source)
	at com.hsbc.objectpool.general.ObjectPool.borrowObject(ObjectPool.java:57)
	at com.hsbc.objectpool.general.TestGeneralObjectPool.run(TestGeneralObjectPool.java:44)
	at java.lang.Thread.run(Unknown Source)
Exception in thread "Thread-2" java.util.NoSuchElementException
	at java.util.Vector.firstElement(Unknown Source)
	at com.hsbc.objectpool.general.ObjectPool.borrowObject(ObjectPool.java:57)
	at com.hsbc.objectpool.general.TestGeneralObjectPool.run(TestGeneralObjectPool.java:44)
	at java.lang.Thread.run(Unknown Source)
Thread-0尝试借出对象
pool中有可用的对象1个
Thread-0, 2
Thread-0尝试借出对象
pool中有可用的对象1个
Thread-0, 3
Thread-0尝试借出对象
pool中有可用的对象1个
Thread-0, 4
Thread-0尝试借出对象
pool中有可用的对象1个
Thread-0, 5
Thread-0尝试借出对象
pool中有可用的对象1个
Thread-0, 6
Thread-0尝试借出对象
pool中有可用的对象1个
Thread-0, 7
Thread-0尝试借出对象
pool中有可用的对象1个
Thread-0, 8
Thread-0尝试借出对象
pool中有可用的对象1个
Thread-0, 9
Thread-0 线程运行结束!


好象都是Thread-0在做事, 其他的两个线程都抛异常了, 请问这是为什么和应该怎样修改程序呢? 谢谢~~


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]]> Thu, 28 Aug 2008 19:29:36 +0800 http://www.javaeye.com/problems/3387 http://www.javaeye.com/problems/3387 WS-Security客户端调用webservice出错 JavaEye网站 作者: magicbear  链接：http://www.javaeye.com/problems/3386  发表时间: 2008年08月28日 
Exception in thread "main" org.codehaus.xfire.XFireRuntimeException: Could not invoke service.. Nested exception is org.codehaus.xfire.fault.XFireFault: Header {Security}http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd was not undertsood by the service.
org.codehaus.xfire.fault.XFireFault: Header {Security}http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd was not undertsood by the service.
	at org.codehaus.xfire.fault.Soap11FaultSerializer.readMessage(Soap11FaultSerializer.java:31)
	at org.codehaus.xfire.fault.SoapFaultSerializer.readMessage(SoapFaultSerializer.java:28)
	at org.codehaus.xfire.soap.handler.ReadHeadersHandler.checkForFault(ReadHeadersHandler.java:111)
	at org.codehaus.xfire.soap.handler.ReadHeadersHandler.invoke(ReadHeadersHandler.java:67)
	at org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:131)
	at org.codehaus.xfire.client.Client.onReceive(Client.java:406)
	at org.codehaus.xfire.transport.http.HttpChannel.sendViaClient(HttpChannel.java:139)
	at org.codehaus.xfire.transport.http.HttpChannel.send(HttpChannel.java:48)
	at org.codehaus.xfire.handler.OutMessageSender.invoke(OutMessageSender.java:26)
	at org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:131)
	at org.codehaus.xfire.client.Invocation.invoke(Invocation.java:79)
	at org.codehaus.xfire.client.Invocation.invoke(Invocation.java:114)
	at org.codehaus.xfire.client.Client.invoke(Client.java:336)
	at org.codehaus.xfire.client.XFireProxy.handleRequest(XFireProxy.java:77)
	at org.codehaus.xfire.client.XFireProxy.invoke(XFireProxy.java:57)
	at $Proxy8.register(Unknown Source)

我用的服务器是resin3.1 客户端的包和服务器端的包都一样


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]]> Thu, 28 Aug 2008 19:17:12 +0800 http://www.javaeye.com/problems/3386 http://www.javaeye.com/problems/3386 关于SWT的问题 JavaEye网站 作者: hszhsh  链接：http://www.javaeye.com/problems/3385  发表时间: 2008年08月28日
在windows下我用SWT.RIGHT_TO_LEFT创建一个Tree，树是左右反过来的，即滚动条在左边树靠右显示，但在Mac系统下没有效果，这是为什么，有其它方法使树左右反过来显示吗？


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]]> Thu, 28 Aug 2008 19:14:24 +0800 http://www.javaeye.com/problems/3385 http://www.javaeye.com/problems/3385 xml查询优化 JavaEye网站 作者: thankyou2008  链接：http://www.javaeye.com/problems/3384  发表时间: 2008年08月28日
xml文档 初步 格式如下：
<?xml version="1.0" encoding="UTF-8"?>
<allresource>
<resourceitem> //一条资源记录
<id>1 </id>//id 是唯一的
<title>07各地高考作文题 </title> //资源标题
<keywords>作文，高考 </keywords> //资源关键字
<kind>doc </kind> //资源类型(资源文件的扩展名)
<describe>07各地高考作文题 </describe> //资源具体描述
<date>2007-12-1 8:50:43 </date> //发布日期
<url>http://192.168.16.3:8080/resources/07各地高考作文题.doc </url> //资源保存地址
<author>李明 </author> //资源作者
<publisher>山东师大 </publisher> //资源发布者
</resourceitem>
<resourceitem> //一条资源记录
<id>2 </id>
<title>08各地中考作文题 </title> //资源标题
<keywords>作文，中考 </keywords> //资源关键字
<kind>doc </kind> //资源类型(资源文件的扩展名)
<describe>08各地中考作文题 </describe> //资源具体描述
<date>2007-12-1 8:50:43 </date> //发布日期
<url>http://192.168.16.3:8080/resources/07各地中考作文题.doc </url> //资源保存地址
<author>李章 </author> //资源作者
<publisher>山东财政 </publisher> //资源发布者
</resourceitem>
<resourceitem> //一条资源记录
<id>3 </id>
<title>高考总结 </title> //资源标题
<keywords>总结，高考 </keywords> //资源关键字
<kind>doc </kind> //资源类型(资源文件的扩展名)
<describe>高考精英总结 </describe> //资源具体描述
<date>2007-12-1 8:50:43 </date> //发布日期
<url>http://192.168.16.3:8080/resources/高考总结.doc </url> //资源保存地址
<author>张国 </author> //资源作者
<publisher>山东财政学院 </publisher> //资源发布者
</resourceitem>
.............
<allresource>


使用了 显示页面 接受 查询关键字，然后 使用dom4j对 次xml进行 解析，
取出 每条记录的 关键字和 接收过来的关键字进行比较，相同，则为一条符合条件的记录

由于本xml文档里面资源（记录） 会非常多 ，所以 使用 一条一条的 比较，效率 会大大降低 问题是 ：

1.有没有什么办法 把这个xml给 优化一下 ，比如 在此 xml文档每一条记录中增加 一 属性 ，让这个属性 和关键字 之间 建立某种 联系。

可以象 哈希表 一样查询 ，省去 涿个比较的 痛苦。

2. 有没有人 能提供一个 使用sax怎么读的demo。


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]]> Thu, 28 Aug 2008 19:03:14 +0800 http://www.javaeye.com/problems/3384 http://www.javaeye.com/problems/3384 fckeditor 2.4 中文乱码 JavaEye网站 作者: zhangyqpost  链接：http://www.javaeye.com/problems/3383  发表时间: 2008年08月28日
下载了fckeditor 2.4 的fckeditor-java-demo-2.4.war部到tomcat5.5中,运行,在填写中文内容提交后,显示内容为乱码,
后到google上游了一天,主要试了1.把tomcat下server.xml两处加上uriencoding="utf-8"
2.把ConnectorServlet.class中加上upload.setHeaderEncoding("utf-8");依然不行.请帮忙.


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]]> Thu, 28 Aug 2008 18:20:18 +0800 http://www.javaeye.com/problems/3383 http://www.javaeye.com/problems/3383 上手ajax遇到的问题 JavaEye网站 作者: irvine007  链接：http://www.javaeye.com/problems/3382  发表时间: 2008年08月28日
问题在注释中。谢谢！ 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script language="javascript">
	function doCaculate() {
		var f = document.form1;
		
		if ((f.number_1.value != "") && (f.number_2.value != "")) {
			document.getElementById("feedback").innerHTML = "正在计算，请稍候...";
			send_request("process.jsp?number_1="+f.number_1.value+ "&number_2="+f.number_2.value);
		
		}
		else if (f.number_1.value == "") {
			document.getElementById("feedback").innerHTML = "乘数不能为空。";
			}
		else if (f.number_2.value == "") {
					document.getElementById("feedback").innerHTML = "被乘数不能未空。";
			}
	}

	var http_request = false;

	function send_request(url) {
		http_request = false;
		if (window.XMLHttpRequest) {
			http_request = new XMLHttpRequest();
			if (http_request.overrideMimeType) {
				http_request.overrideMimeType('text/xml');
			}
		}
		else if (window.ActiveXObject) {
			try {
				http_request = new ActiveXObject("Msxml2.XMLHttp");
			}
			catch (e) {
				try {
					http_request = new ActiveXObject("Microsoft.XMLHTTP");
				}
				catch (e) {}
			}
		}

		if (!http_request) {
			window.alert("不能创建XMLHttpRequest对象实例.");
			return false;
		}

		http_request.onreadystatechange = processRequest;
		http_request.open("GET", url, true);
		http_request.send(null);
	}

	function processRequest() {
		var f = document.form1;
		if (http_request.readyState == 4) {
		
			if (http_request.status == 200) {
				var returnStr = http_request.responseText;
				
				if (returnStr.indexOf("Error") == -1) {
					alert(returnStr);
                                        // 这儿得到returnStr怎么是html?还要自己解析才能等得到计算值吗？
					document.getElementById("feedback").innerHTML = returnStr;
					f.result.value = returnStr;
				}
				else {
					f.result.value = "";
					document.getElementById("feedback").innerHTML = returnStr;
				}
			}
			else {
				alert(http_request.status);
				alert("您所请求的页面有异常.");
			}
		}
	}
</script>
</head>
<body>
	<form action="process.jsp" method="post" enctype="application/x-www-form-urlencoded" name="form1" target="_self">
    <table width="400" cellpadding="4" cellspacing="1" border="0">
    	<caption>简单乘法计算</caption>
        <tr>
        <td align="center">
        	<input type="text" name="number_1" size="10">
            *
            <input type="text" name="number_2" size="10">
            =
            <input type="text" name="result" size="10">
        </td>
        </tr>
        <tr align="center">
        <td>  
        	<input type="button" name="Caculate" value="开始计算" onClick="doCaculate()"> 
            <input type="reset" name="reset" value="重新计算">
        </td>
        </tr>
        <tr><td align="center" height="25"><label id="feedback"> xx</label></td>
        </tr>
    </table>
 </body>
</html>


<%@ page language="java" contentType="text/html; charset=gb2312"
    pageEncoding="gb2312"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>Insert title here</title>
</head>
<body>
	<% 
		String number_1 = request.getParameter("number_1");
		String number_2 = request.getParameter("number_2");
		int num_1 = 0, num_2 = 0;
		boolean status = true;
		if (number_1 != null) {
			try {
				num_1 = Integer.parseInt(number_1);
			}
			catch (Exception ex) {
				status = false;
				out.println("Error，乘数必须是整数.");
			}
		}
		if (number_2 != null) {
			try {
				num_2 = Integer.parseInt(number_2);
			}
			catch (Exception ex) {
				status = false;
				out.println("Error，被乘数必须是整数.");
			}
		}
		if (status) out.println(num_1*num_2);
	%>
</body>
</html>



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]]> Thu, 28 Aug 2008 18:14:13 +0800 http://www.javaeye.com/problems/3382 http://www.javaeye.com/problems/3382 Java程序运行时如何创建属性? JavaEye网站 作者: kkllmey  链接：http://www.javaeye.com/problems/3381  发表时间: 2008年08月28日
User对象有name和age属性，我想在程序运行时：再为User对象加一个address属性
谢谢!!


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]]> Thu, 28 Aug 2008 18:02:38 +0800 http://www.javaeye.com/problems/3381 http://www.javaeye.com/problems/3381 javascript题目 JavaEye网站 作者: rockxx  链接：http://www.javaeye.com/problems/3380  发表时间: 2008年08月28日
有一个TEXT对象str接收.
怎么写一个函数验证是否为空?
还有怎么用正则表达式表示只能是字符


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]]> Thu, 28 Aug 2008 17:52:08 +0800 http://www.javaeye.com/problems/3380 http://www.javaeye.com/problems/3380 怎么实现swt进度条(ProgressBar) JavaEye网站 作者: favor  链接：http://www.javaeye.com/problems/3379  发表时间: 2008年08月28日
现在要实现一个功能，就是我不知道一个程序执行的时间！大约要个10几秒吧！我想做一个进度条！告诉用户程序的执行时间，就像windows的进度条可能准确地告诉用户什么时候程序完成！我需要的是在一个Dialog中加入一个ProgressBar来控制的！不用弹出的那种！请各位大哥帮帮忙了！谢谢了呀！
问题补充：
但是这样不能保证程序执行完成！进度条也正好走完呀！


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]]> Thu, 28 Aug 2008 17:51:28 +0800 http://www.javaeye.com/problems/3379 http://www.javaeye.com/problems/3379 apache+resin默认首页问题 JavaEye网站 作者: wt8414  链接：http://www.javaeye.com/problems/3378  发表时间: 2008年08月28日
我使用apache2.2.9+resin-3.1.6进行整合,整合成功后设置默认首页为inex.jsp,但怎么也无法访问到index.jsp,在web.xml中也设置了welcome-file为index.jsp,还是不能正常访问,是什么原因有谁可以告诉我


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]]> Thu, 28 Aug 2008 17:51:02 +0800 http://www.javaeye.com/problems/3378 http://www.javaeye.com/problems/3378 如何从数据库中读取内容生成JTree? JavaEye网站 作者: mike12268  链接：http://www.javaeye.com/problems/3377  发表时间: 2008年08月28日
请教高人
我在做一个网管程序,网络分成3层
连接情况写在数据库中,请问该如何读取才能生成JTree?
数据库表内容为(name,belongtoname)
(a,b)(c,b),a和c为b的下层用户,所以在tree中成为b的叶子节点
多谢高人了!!!


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]]> Thu, 28 Aug 2008 17:32:47 +0800 http://www.javaeye.com/problems/3377 http://www.javaeye.com/problems/3377 现在RUBY很流行吗？要学习吗，比JAVA如何 JavaEye网站 作者: lirong1978  链接：http://www.javaeye.com/problems/3376  发表时间: 2008年08月28日
知道的告诉一下，是不是很流行？有用这个做项目的吗？


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]]> Thu, 28 Aug 2008 17:18:59 +0800 http://www.javaeye.com/problems/3376 http://www.javaeye.com/problems/3376 xml解析 JavaEye网站 作者: learnmore  链接：http://www.javaeye.com/problems/3375  发表时间: 2008年08月28日
下面是写xml文件的方法,生成的.xml文件中有<?xml version="1.0" encoding="UTF-8" standalone="no"?>这样的标识,
如何能把standalone="no"这个属性去掉呢?

private void saveXml(Document document)
{
try{
TransformerFactory tf=TransformerFactory.newInstance();
Transformer transformer=tf.newTransformer();
DOMSource source=new DOMSource(document);
transformer.setOutputProperty(OutputKeys.ENCODING,"UTF-8");
transformer.setOutputProperty(OutputKeys.INDENT,"yes");
PrintWriter pw=new PrintWriter(new FileOutputStream(path));
StreamResult result=new StreamResult(pw);
transformer.transform(source,result);
//关闭流
pw.close();
}
catch(TransformerException mye){
mye.printStackTrace();
}
catch(IOException exp){
exp.printStackTrace();
}
}


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]]> Thu, 28 Aug 2008 17:09:48 +0800 http://www.javaeye.com/problems/3375 http://www.javaeye.com/problems/3375 Ext的GridPanel绑定了19列，调用Action加入数据，报错 JavaEye网站 作者: buaabyy  链接：http://www.javaeye.com/problems/3374  发表时间: 2008年08月28日
我使用Ext的GridPanel显示数据，大概有17列的样子，但是当我加载3列数据的时候Grid可以正常加载，加载大于3列的时候，就会出现如下异常，已经困扰了我1天多了，有没有朋友遇到这样的问题异常如下：
2008-8-28 16:58:30 org.apache.struts.action.RequestProcessor processException
警告: Unhandled Exception thrown: class java.lang.ArrayIndexOutOfBoundsException
2008-8-28 16:58:30 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet action threw exception
java.lang.ArrayIndexOutOfBoundsException: 8192
at org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:721)
at org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:628)
at org.apache.coyote.http11.InternalOutputBuffer.sendHeader(InternalOutputBuffer.java:501)
at org.apache.coyote.http11.Http11Processor.prepareResponse(Http11Processor.java:1628)
at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:967)
at org.apache.coyote.Response.action(Response.java:181)
at org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:573)
at org.apache.coyote.Response.doWrite(Response.java:560)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:361)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:347)
at org.apache.tomcat.util.buf.IntermediateOutputStream.write(C2BConverter.java:236)
at sun.nio.cs.StreamEncoder$CharsetSE.writeBytes(StreamEncoder.java:336)
at sun.nio.cs.StreamEncoder$CharsetSE.implFlushBuffer(StreamEncoder.java:404)
at sun.nio.cs.StreamEncoder$CharsetSE.implFlush(StreamEncoder.java:408)
at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:152)
at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:213)
at org.apache.tomcat.util.buf.WriteConvertor.flush(C2BConverter.java:185)
at org.apache.tomcat.util.buf.C2BConverter.flushBuffer(C2BConverter.java:128)
at org.apache.catalina.connector.OutputBuffer.realWriteChars(OutputBuffer.java:536)
at org.apache.tomcat.util.buf.CharChunk.flushBuffer(CharChunk.java:438)
at org.apache.tomcat.util.buf.CharChunk.append(CharChunk.java:369)
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:491)
at org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:162)
at org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:171)
at org.apache.catalina.connector.CoyoteWriter.print(CoyoteWriter.java:221)
at cn.com.zte.struts.action.GetDataAction.execute(GetDataAction.java:56)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:595)
java.lang.ArrayIndexOutOfBoundsException
at java.lang.System.arraycopy(Native Method)
at org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:690)
at org.apache.coyote.http11.InternalOutputBuffer.sendStatus(InternalOutputBuffer.java:429)
at org.apache.coyote.http11.Http11Processor.prepareResponse(Http11Processor.java:1617)
at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:967)
at org.apache.coyote.Response.action(Response.java:181)
at org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:573)
at org.apache.coyote.Response.doWrite(Response.java:560)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:361)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:314)
at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:278)
at org.apache.catalina.connector.Response.finishResponse(Response.java:484)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:177)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:595)
2008-8-28 16:58:30 org.apache.coyote.http11.Http11Processor process
严重: Error finishing response
java.lang.ArrayIndexOutOfBoundsException
at java.lang.System.arraycopy(Native Method)
at org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:690)
at org.apache.coyote.http11.InternalOutputBuffer.sendStatus(InternalOutputBuffer.java:429)
at org.apache.coyote.http11.Http11Processor.prepareResponse(Http11Processor.java:1617)
at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:967)
at org.apache.coyote.Response.action(Response.java:181)
at org.apache.coyote.http11.InternalOutputBuffer.endRequest(InternalOutputBuffer.java:389)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:911)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:595)
2008-8-28 16:58:55 org.apache.struts.action.RequestProcessor processException
警告: Unhandled Exception thrown: class java.lang.ArrayIndexOutOfBoundsException
2008-8-28 16:58:55 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet action threw exception
java.lang.ArrayIndexOutOfBoundsException: 8192
at org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:721)
at org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:628)
at org.apache.coyote.http11.InternalOutputBuffer.sendHeader(InternalOutputBuffer.java:501)
at org.apache.coyote.http11.Http11Processor.prepareResponse(Http11Processor.java:1628)
at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:967)
at org.apache.coyote.Response.action(Response.java:181)
at org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:573)
at org.apache.coyote.Response.doWrite(Response.java:560)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:361)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:347)
at org.apache.tomcat.util.buf.IntermediateOutputStream.write(C2BConverter.java:236)
at sun.nio.cs.StreamEncoder$CharsetSE.writeBytes(StreamEncoder.java:336)
at sun.nio.cs.StreamEncoder$CharsetSE.implFlushBuffer(StreamEncoder.java:404)
at sun.nio.cs.StreamEncoder$CharsetSE.implFlush(StreamEncoder.java:408)
at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:152)
at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:213)
at org.apache.tomcat.util.buf.WriteConvertor.flush(C2BConverter.java:185)
at org.apache.tomcat.util.buf.C2BConverter.flushBuffer(C2BConverter.java:128)
at org.apache.catalina.connector.OutputBuffer.realWriteChars(OutputBuffer.java:536)
at org.apache.tomcat.util.buf.CharChunk.flushBuffer(CharChunk.java:438)
at org.apache.tomcat.util.buf.CharChunk.append(CharChunk.java:369)
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:491)
at org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:162)
at org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:171)
at org.apache.catalina.connector.CoyoteWriter.print(CoyoteWriter.java:221)
at cn.com.zte.struts.action.GetDataAction.execute(GetDataAction.java:56)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:595)
java.lang.ArrayIndexOutOfBoundsException
at java.lang.System.arraycopy(Native Method)
at org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:690)
at org.apache.coyote.http11.InternalOutputBuffer.sendStatus(InternalOutputBuffer.java:429)
at org.apache.coyote.http11.Http11Processor.prepareResponse(Http11Processor.java:1617)
at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:967)
at org.apache.coyote.Response.action(Response.java:181)
at org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:573)
at org.apache.coyote.Response.doWrite(Response.java:560)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:361)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:314)
at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:278)
at org.apache.catalina.connector.Response.finishResponse(Response.java:484)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:177)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:595)
2008-8-28 16:58:55 org.apache.coyote.http11.Http11Processor process
严重: Error finishing response
java.lang.ArrayIndexOutOfBoundsException
at java.lang.System.arraycopy(Native Method)
at org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:690)
at org.apache.coyote.http11.InternalOutputBuffer.sendStatus(InternalOutputBuffer.java:429)
at org.apache.coyote.http11.Http11Processor.prepareResponse(Http11Processor.java:1617)
at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:967)
at org.apache.coyote.Response.action(Response.java:181)
at org.apache.coyote.http11.InternalOutputBuffer.endRequest(InternalOutputBuffer.java:389)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:911)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:595)


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]]> Thu, 28 Aug 2008 17:06:21 +0800 http://www.javaeye.com/problems/3374 http://www.javaeye.com/problems/3374 您好,问一个VML中虚线设置的问题. JavaEye网站 作者: keke020  链接：http://www.javaeye.com/problems/3373  发表时间: 2008年08月28日
大家好,不知哪位有VML中各个标签中的属性手册呢?
比如:v:polyline中的style有哪些属性集,这样方便于开发的时候查询.谢谢.

好了,现提问如下:
请教一个VML的问题:
在v:polyline 的style属性时里, 可不可以直接设置stroke的显示为虚线,即:
<v:polyline id="polylineObj" style="POSITION:absolute;strokeDash:dot" points="0pt,0pt,280pt,0pt"/>
为什么这种方式不是虚线的呢?strokeDash是不是这个东东写错了?

而不用这样的方式设置为虚线:
<v:polyline id="polylineObj" style="POSITION:absolute" points="0pt,0pt,280pt,0pt">
<v:stroke dashstyle = "dot"/>
</v:polyline>


有兴趣聊VML语言,请加QQ:86225077.万分感谢.


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]]> Thu, 28 Aug 2008 16:42:03 +0800 http://www.javaeye.com/problems/3373 http://www.javaeye.com/problems/3373 struts2 spring hibernate的文件上传问题 JavaEye网站 作者: huobao89  链接：http://www.javaeye.com/problems/3372  发表时间: 2008年08月28日
用struts2 spring hibernate 文件上传不会做。只把图片的地址放在数据库中
看了很多struts2的文件上传的例子。 看明白了。但是，三个框架一起用，就很糊涂。
那位大哥帮帮我吧。整了3天，根本都不行。
还是自己java的功底不好呀。

我就25分了，悬赏20分。
问题补充：
congjl2002 大哥
又是你呀 谢谢亚

你说的思路我明白。
但是具体我很糊涂。
怎么把地址村到数据库里亚。

如果存名字和密码之类的，我会做。
存地址不过呀。我把握的编码传上
麻烦你帮我看看。

.jsp 叶面

<script type="text/javascript">

function addMore()
{
var td = document.getElementById("more");

var br = document.createElement("br");
var input = document.createElement("input");
var button = document.createElement("input");

input.type = "file";
input.name = "file";

button.type = "button";
button.value = "削除";

button.onclick = function()
{
td.removeChild(br);
td.removeChild(input);
td.removeChild(button);
}

td.appendChild(br);
td.appendChild(input);
td.appendChild(button);

}

</script>

</head>

<body>

<s:include value="head.jsp"></s:include>

<h2>
商品新規
</h2>
<s:fielderror cssStyle="color:red"/>
<s:form action="goodsRegister" enctype="MULTIPART/FORM-DATA"
method="post" theme="simple">
<s:token name="registerToken"></s:token>
<table width="40%">
<tr>
<td>
<s:fielderror cssStyle="color:red"></s:fielderror>
</td>
</tr>
<tr>
<td>
商品名:
</td>
<td>
<s:textfield name="sales.productname" />
<td>
</tr>
<tr>
<td>
写真:
</td>
<td id="more">
<s:file name="product.file"></s:file>
<input type="button" value="追加" onclick="addMore()"/>
</td>
</tr>
<tr>

<td>
<s:reset value="リセット" />
</td>

<td>
<s:submit value="送信" />
</td>
</tr>
</table>
</s:form>


</body>
</html>

说明； sales 和product 分别是表的类





action 页


package com.yang.ssh2.web;

import com.opensymphony.xwork2.ActionSupport;
import com.yang.ssh2.modle.Product;
import com.yang.ssh2.modle.Sales;
import com.yang.ssh2.service.ProductManager;
import com.yang.ssh2.service.SalesManager;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;

import org.apache.struts2.ServletActionContext;

public class GoodsRegisterAction extends ActionSupport {

private static final long serialVersionUID = 7452300082842515049L;

private SalesManager salesManager;
private ProductManager productManager;
private Sales sales;
private Product product;


private List<File> file;

private List<String> fileFileName;

private List<String> fileContentType;





public Sales getSales() {
return sales;
}

public void setSales(Sales sales) {
this.sales = sales;
}

public Product getProduct() {
return product;
}

public void setProduct(Product product) {
this.product = product;
}


public static long getSerialVersionUID() {
return serialVersionUID;
}

public void setSalesManager(SalesManager salesManager) {
this.salesManager = salesManager;
}

public void setProductManager(ProductManager productManager) {
this.productManager = productManager;
}

String filePath=null;

public String getFilePath() {
return filePath;
}

public void setFilePath(String filePath) {
this.filePath = filePath;
}



public List<File> getFile() {
return file;
}

public void setFile(List<File> file) {
this.file = file;
}

public List<String> getFileFileName() {
return fileFileName;
}

public void setFileFileName(List<String> fileFileName) {
this.fileFileName = fileFileName;
}

public List<String> getFileContentType() {
return fileContentType;
}


public void setFileContentType(List<String> fileContentType) {
this.fileContentType = fileContentType;
}


@SuppressWarnings("deprecation")
public String add() throws IOException {
String desFile="";
salesManager.addSales(sales);

productManager.addProduct(product);
productManager.addProductPicture(desFile);
System.out.println("5555555555554");


for (int i = 0; i < file.size(); i++) {
InputStream is = new FileInputStream(file.get(i));

String root = ServletActionContext.getRequest().getRealPath("/upload");

desFile = root +"/" + this.getFileFileName().get(i);

OutputStream os = new FileOutputStream(desFile);

System.out.println("22222222222222222222222222");
byte[] buffer = new byte[400];

int length = 0;

while ((length = is.read(buffer)) > 0) {
os.write(buffer, 0, length);
}

is.close();

os.close();

}
System.out.println("tttttttttttttttttt");

return SUCCESS;
}





相关的 service层 的编码


import java.util.Set;

import com.yang.ssh2.dao.ProductDao;
import com.yang.ssh2.modle.Product;
import com.yang.ssh2.service.ProductManager;

public class ProductManagerImpl implements ProductManager {

private ProductDao productDao;


public void setProductDao(ProductDao productDao) {
this.productDao = productDao;
}

public void addProduct(Product product) {
productDao.add(product);
}

public void deleteProduct(long productid) {
productDao.delete(productid);
}

public void getProduct(long productid) {
productDao.getProduct(productid);

}

public Set<Product> setProducts() {
return productDao.getProducts();
}

public void updateproduct(Product product) {
productDao.update(product);
}

public void addProductPicture(String picture) {
productDao.addPicture(picture);
}



}







麻烦了
谢谢


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]]> Thu, 28 Aug 2008 16:38:13 +0800 http://www.javaeye.com/problems/3372 http://www.javaeye.com/problems/3372 buffalo与form绑定的问题 JavaEye网站 作者: jielovesfang  链接：http://www.javaeye.com/problems/3371  发表时间: 2008年08月28日
我在用buffalo 2开发时，form绑定出了问题
其它控件都实现了绑定，可textarea没有内容出来，请问是什么原因？谢谢 

<script language="javascript">
    var END_POINT = "/bfapp";
    var buffalo = new Buffalo(END_POINT, false);
    function selectClazz() {
		var p1 = $("clazz").value;
    	//buffalo.remoteCall("helloService.hello",[p1], function(reply) {
    	//alert(reply.getResult());
    	//});
		buffalo.bindReply("urlSvc.getUrlsByClazzIdForAjax", [p1], "url");
    }
	
	function selectUrl() {
		var p1 = $("url").value;
		buffalo.bindReply("urlSvc.getUrlByUrlIdForAjax", [p1], "form1");
	}
	
</script>


...


	  <form id="form1" name="form1" method="post" action="">
	    <table width="610" cellpadding="2" cellspacing="01" border="0" id="calendar">
          <tr id="noborder">
            <td colspan="7" class="subHeader">修改商家</td>
          </tr>
          <tr id="weekdays" bgcolor="#003399">
            <th align="center" width="15%" class="smallText"> </th>
            <th align="center" width="14%" class="smallText"> </th>
            <th align="center" width="14%" class="smallText"> </th>
            <th align="center" width="14%" class="smallText"> </th>
            <th align="center" width="14%" class="smallText"> </th>
            <th align="center" width="14%" class="smallText"> </th>
            <th align="center" width="15%" class="smallText"> </th>
          </tr>
          <tr id="calheader" bgcolor="#ffffcc">
            <td align="center" valign="middle" class="smallText">选择URL</td>
            <td colspan="6" valign="middle" class="smallText"><select name="clazz" id="clazz" style="width:120px" onchange="form1.name.focus();selectClazz();">
                <option value="">请选择分类</option>
                <#list clazzes as clazz>
                <option value="${clazz.clazzId }">${clazz.clazzName }</option>
                </#list>
              </select>
                <select name="url" id="url" jtext="name" jvalue="uid" onchange="form1.name.focus();selectUrl();">
                </select>            </td>
          </tr>
          <tr>
            <td align="center" valign="middle" class="smallText">名称</td>
            <td colspan="6" valign="top" class="smallText"><input name="name" type="text" id="name" style="width:300px" /></td>
          </tr>
          <tr id="calheader" bgcolor="#ffffcc">
            <td align="center" valign="middle" class="smallText">说明</td>
            <td colspan="6" valign="top" class="smallText"><textarea name="nodeInfo" rows="3" id="nodeInfo" style="width:300px"></textarea></td>
          </tr>
          <tr>
            <td align="center" valign="middle" class="smallText">网址</td>
            <td colspan="6" valign="top" class="smallText"><input name="urlstr" type="text" id="urlstr" style="width:300px" /></td>
          </tr>
          <tr id="calheader" bgcolor="#ffffcc">
            <td align="center" valign="middle" class="smallText">颜色</td>
            <td colspan="6" valign="top" class="smallText"><input name="color" type="text" id="color" style="width:300px" /></td>
          </tr>
          <tr>
            <td colspan="7" align="center" valign="middle" class="smallText"><input type="submit" name="Submit" value="登记" /></td>
          </tr>
        </table>
      </form> 



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]]> Thu, 28 Aug 2008 16:30:38 +0800 http://www.javaeye.com/problems/3371 http://www.javaeye.com/problems/3371 怎样动态的配置job和cronExpression？应用quartz实现定时任务 JavaEye网站 作者: futionbai  链接：http://www.javaeye.com/problems/3370  发表时间: 2008年08月28日
想让客户在前台动态的配置job和cronExpression，这些东西在后台怎么处理呢？也就是quartz的多任务在前台的可配置化。
大侠们有什么高见呢？


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]]> Thu, 28 Aug 2008 16:11:02 +0800 http://www.javaeye.com/problems/3370 http://www.javaeye.com/problems/3370 菜鸟问题:jbpm JavaEye网站 作者: zhuqimeng  链接：http://www.javaeye.com/problems/3369  发表时间: 2008年08月28日
一个 tasknode 后边有几条线, 也就是 transition 啊, 怎么能获取这些 transition 呢 ,谢谢!!最好写几行代码啊.


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]]> Thu, 28 Aug 2008 16:02:49 +0800 http://www.javaeye.com/problems/3369 http://www.javaeye.com/problems/3369 Seam测试时FacesContext的注入问题 JavaEye网站 作者: arthurln  链接：http://www.javaeye.com/problems/3368  发表时间: 2008年08月28日
使用Eclipse的TestNG插件测试一个组件:
被测对象的部分代码： 
@Name("dictionaryService")
@Scope(ScopeType.STATELESS)
public class DictionaryService {

	@In org.jboss.seam.faces.FacesContext facesContext; 
	
	@In PojoCache pojoCache;

	@Logger Log log;

........


测试类的部分代码： 
public class DictionaryServiceTest extends SeamTest {

	@Test
	public void testGetDictionaryTree() throws Exception {
		new ComponentTest() {
			protected void testComponents() throws Exception {
				invokeMethod("#{dictionaryService.getDictionaryTree}");
			}
		}.run();

	}
}


部分错误信息：
javax.el.ELException: org.jboss.seam.RequiredException: @In attribute requires non-null value: dictionaryService.facesContext
at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:333)
at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:342)
.....

经过测试，Log和PojoCache都可以注入，但是FacesContext不行。

不知道应该如何在测试环境下取得FacesContext。只是想通过FacesContext来取WEB-INF下的一个配置文件，如果有其他简单的方法更好。

PS：
如果不用@In来注入，这么来写可以通过测试：
被测试方法： 
ExternalContext externalContext = javax.faces.context.FacesContext.getCurrentInstance().getExternalContext();

测试方法： 
new FacesRequest() {
	@Override
	protected void invokeApplication() throws Exception {
		invokeMethod("#{dictionaryService.getDictionaryTree}");
	}
}.run();



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]]> Thu, 28 Aug 2008 16:01:47 +0800 http://www.javaeye.com/problems/3368 http://www.javaeye.com/problems/3368 这个regexp匹配的是什么内容 JavaEye网站 作者: wenyuan  链接：http://www.javaeye.com/problems/3367  发表时间: 2008年08月28日
<p>/([.*+?^=!:${}()|[\]\/\\])/g</p>
<p><!--[if gte mso 9]><xml>
<w:WordDocument>
<w:View>Normal</w:View>
<w:Zoom>0</w:Zoom>
<w:PunctuationKerning />
<w:DisplayHorizontalDrawingGridEvery>0</w:DisplayHorizontalDrawingGridEvery>
<w:DisplayVerticalDrawingGridEvery>2</w:DisplayVerticalDrawingGridEvery>
<w:ValidateAgainstSchemas />
<w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid>
<w:IgnoreMixedContent>false</w:IgnoreMixedContent>
<w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText>
<w:Compatibility>
<w:SpaceForUL />
<w:BalanceSingleByteDoubleByteWidth />
<w:DoNotLeaveBackslashAlone />
<w:ULTrailSpace />
<w:DoNotExpandShiftReturn />
<w:AdjustLineHeightInTable />
<w:BreakWrappedTables />
<w:SnapToGridInCell />
<w:WrapTextWithPunct />
<w:UseAsianBreakRules />
<w:DontGrowAutofit />
<w:UseFELayout />
</w:Compatibility>
<w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel>
</w:WordDocument>
</xml><![endif]--><!--[if gte mso 9]><xml>
<w:LatentStyles DefLockedState="false" LatentStyleCount="156">
</w:LatentStyles>
</xml><![endif]-->
<!--
/* Font Definitions */
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;
mso-font-alt:宋体;
mso-font-charset:134;
mso-generic-font-family:auto;
mso-font-pitch:variable;
mso-font-signature:3 135135232 16 0 262145 0;}
@font-face
{font-family:新細明體;
panose-1:2 2 3 0 0 0 0 0 0 0;
mso-font-alt:PMingLiU;
mso-font-charset:136;
mso-generic-font-family:roman;
mso-font-pitch:variable;
mso-font-signature:3 137232384 22 0 1048577 0;}
@font-face
{font-family:"\@新細明體";
panose-1:2 2 3 0 0 0 0 0 0 0;
mso-font-charset:136;
mso-generic-font-family:roman;
mso-font-pitch:variable;
mso-font-signature:3 137232384 22 0 1048577 0;}
@font-face
{font-family:"\@SimSun";
panose-1:2 1 6 0 3 1 1 1 1 1;
mso-font-charset:134;
mso-generic-font-family:auto;
mso-font-pitch:variable;
mso-font-signature:3 135135232 16 0 262145 0;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{mso-style-parent:"";
margin:0cm;
margin-bottom:.0001pt;
mso-pagination:none;
font-size:12.0pt;
font-family:"Times New Roman";
mso-fareast-font-family:新細明體;
mso-font-kerning:1.0pt;}
/* Page Definitions */
@page
{mso-page-border-surround-header:no;
mso-page-border-surround-footer:no;}
@page Section1
{size:595.3pt 841.9pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;
mso-header-margin:42.55pt;
mso-footer-margin:49.6pt;
mso-paper-source:0;
layout-grid:18.0pt;}
div.Section1
{page:Section1;}
-->
<!--[if gte mso 10]>
<style>
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:表格內文;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:"Times New Roman";
mso-fareast-font-family:"Times New Roman";
mso-ansi-language:#0400;
mso-fareast-language:#0400;
mso-bidi-language:#0400;}
</style>
<![endif]-->
</p>
<p class="MsoNormal"><span style="font-family: SimSun;">这个是</span><span lang="EN-US">prototype1.6</span><span style="font-family: SimSun;">上的一个</span><span lang="EN-US">regexp</span><span style="font-family: SimSun;">不知道匹配什么内容﹗</span></p>
<p> </p>


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]]> Thu, 28 Aug 2008 15:53:44 +0800 http://www.javaeye.com/problems/3367 http://www.javaeye.com/problems/3367 关于rails "-%>"的问题。 JavaEye网站 作者: rjbj  链接：http://www.javaeye.com/problems/3366  发表时间: 2008年08月28日
有这么一段代码 
<% if flash[:notice] -%>
        <div id="notice"><a color = "red"><%= flash[:notice] %></a></div>
        <br>
<% end -%>


其中
Ruby代码 复制代码 
<% if flash[:notice] -%>


后面的 -%> 的 "-"代表了什么？
谢谢。


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]]> Thu, 28 Aug 2008 15:52:51 +0800 http://www.javaeye.com/problems/3366 http://www.javaeye.com/problems/3366 spring mvc的问题 JavaEye网站 作者: qatang  链接：http://www.javaeye.com/problems/3365  发表时间: 2008年08月28日
spring2.5.5，我怎样才能不返回一个页面，返回一个null？

return "common/county";
我试了void,返回一个默认的county.jsp；return null也不行。 

@Controller
public class CountyController {
	@Autowired
	private CommonService commonService;
	@RequestMapping("/county.html")
	public String listItems(Model model, County county, HttpServletResponse response){
		if(county.getID() == 0){
			county.setID(1);
		}
		county = commonService.getCounty(county.getID());
		StringBuffer sb = CountyUtil.spliceCounties(new ArrayList<County>(county.getChildren()), county);
		PrintWriter out = null;
		try {
			out = response.getWriter();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		response.setContentType("text/html; charset=GBK");
		out.println(sb.toString());
		return "common/county";
	}
}


mvc配置文件 
<context:component-scan base-package="org.dppc.train.web"/>
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/WEB-INF/jsp/" p:suffix=".jsp"/>



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]]> Thu, 28 Aug 2008 15:45:58 +0800 http://www.javaeye.com/problems/3365 http://www.javaeye.com/problems/3365 firefox3中firebug报这样的错误是怎么回事？ JavaEye网站 作者: zhuyx808  链接：http://www.javaeye.com/problems/3364  发表时间: 2008年08月28日
第一个是出这样的乱码(¹Õ Element.getAttribute öCP ³，出这样的乱码是这么回事？
第二个问题就是，通过firefox3（firebug1.2）读取xml文件的Element的时候没有getAttribute的方法吗？ 为什么firefox2（firebug1.0）的时候没问题，升级到这个的时候就有问题了，这个问题更奇怪在如果禁用firebug的话用firefox3是正常解析的，用了firebug，就会在getAttribute的时候出问题，到底怎么回事哦？
附上图片：


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]]> Thu, 28 Aug 2008 15:14:04 +0800 http://www.javaeye.com/problems/3364 http://www.javaeye.com/problems/3364 面试问题~ JavaEye网站 作者: password01  链接：http://www.javaeye.com/problems/3363  发表时间: 2008年08月28日
面试问题~ 做为一个初级的Java软件工程师所要具备的是什么啊，到底什么样的合适啊，对于面试有一些迷茫~唉~做一个新手要具备什么啊，请大家指点一下~


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]]> Thu, 28 Aug 2008 14:55:34 +0800 http://www.javaeye.com/problems/3363 http://www.javaeye.com/problems/3363 你如何看待Java，Ruby和Groovy的未来 JavaEye网站 作者: caipanjin  链接：http://www.javaeye.com/problems/3362  发表时间: 2008年08月28日
Java会在以后的路上通过改进，继续他的霸主地位，还是被迫像Groovy这样的动态语言靠拢，还是被像Ruby这样的其他语言所替代？


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]]> Thu, 28 Aug 2008 14:55:26 +0800 http://www.javaeye.com/problems/3362 http://www.javaeye.com/problems/3362 按模块划分时模型类时使用表关联出错 JavaEye网站 作者: tlink  链接：http://www.javaeye.com/problems/3361  发表时间: 2008年08月28日
开发环境:netbeans6.5M + jruby1.3 + rails2.1.0
由于模型类较多,因此采用按模块划分的方式来组织模型.下面是对应的模型代码: 
  class SysMan::TUser < ActiveRecord::Base
    has_one :t_user_detail,
           #:class_name => "SysMan::TUserDetail",
            :dependent => :destroy
  end

  class SysMan::TUserDetail < ActiveRecord::Base
    belongs_to :t_user
  end

对应的控制器的代码:
class SysMan::TUsersController < ApplicationController
def create
@t_user = SysMan::TUser.new(params[:t_user])
@t_user.t_user_detail = SysMan::TUserDetail.new(:name => "de")

respond_to do |format|
if @t_user.save
format.html { redirect_to :action => :index }
else
format.html { render :action => "new" }
end
end
end
end
当调用SysMan::TUsersController#create方法后,提示: 
SysMan is not missing constant TUserDetail!
RAILS_ROOT: E:/workbase/JGdp

Application Trace | Framework Trace | Full Trace 
D:/Program Files/jruby-1.1.3/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:252:in `load_missing_constant'
D:/Program Files/jruby-1.1.3/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:467:in `const_missing'
D:/Program Files/jruby-1.1.3/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:485:in `const_missing'
D:/Program Files/jruby-1.1.3/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:1907:in `class_eval'
D:/Program Files/jruby-1.1.3/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:1907:in `compute_type'
D:/Program Files/jruby-1.1.3/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/reflection.rb:129:in `klass'
D:/Program Files/jruby-1.1.3/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/reflection.rb:137:in `quoted_table_name'
D:/Program Files/jruby-1.1.3/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/associations/has_one_association.rb:69:in `construct_sql'
D:/Program Files/jruby-1.1.3/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/associations/has_one_association.rb:6:in `initialize'
D:/Program Files/jruby-1.1.3/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/associations.rb:1099:in `new'
D:/Program Files/jruby-1.1.3/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/associations.rb:1099:in `t_user_detail='
app/controllers/sys_man/t_users_controller.rb:46:in `create'
:1:in `start'

而将SysMan::TUser修改为如下代码时(显示指定:class_name),则创建成功. 
  class SysMan::TUser < ActiveRecord::Base
    has_one :t_user_detail,
            :class_name => "SysMan::TUserDetail",
            :dependent => :destroy
  end

不是说在同一个命令空间时不用显示指定的吗,为什么读数据时又可以不用加上.不知道大家有没有碰到相似的问题,有没有好的解决方案,还请帮帮忙.


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]]> Thu, 28 Aug 2008 14:44:15 +0800 http://www.javaeye.com/problems/3361 http://www.javaeye.com/problems/3361 取当前时间 在AIX系统中，没有时分秒 JavaEye网站 作者: zxming12345  链接：http://www.javaeye.com/problems/3360  发表时间: 2008年08月28日
<p>    private String getNowTime() {<br />        Date now = new Date();<br />        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");<br />        String value = formatter.format(now);<br />        return value;<br />    }<br />    </p>
<p><span style="font-size: medium;">上面是我取时间的方法。<strong>但是在AIX系统中，取不到时分秒</strong>。 那位大侠遇到过类似的问题。帮帮忙吧！</span></p>


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]]> Thu, 28 Aug 2008 14:35:22 +0800 http://www.javaeye.com/problems/3360 http://www.javaeye.com/problems/3360