SSH中使用ajax获取json数据，报the server responded with a status of 500，附带所有源码，和80分奖励！

huwang14 2016-07-29 11:30:34

刚接触ajax不久，写了一段代码在ajax中获取action返回的json数据，从网上找了一段测试代码（直接下载的整个工程），可以跑起来，但是把这些代码copy到自己工程中却一直报错，请各位帮忙分析一下，送上80分不成敬意，谢谢了！这个问题卡了我2天了，愁死了，请各位大神指点迷津，万分感谢！！！！！！！
这是action的源代码：

package action;

import java.util.HashMap;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import net.sf.json.JSONObject;

import org.apache.struts2.interceptor.ServletRequestAware;

import com.opensymphony.xwork2.ActionSupport;

public class JsonAction extends ActionSupport implements ServletRequestAware{

	private static final long serialVersionUID = 1L;	

	private HttpServletRequest request;

	private String result;

	public void setServletRequest(HttpServletRequest arg0) {

		this.request = arg0;

	}

	public String getResult() {

		return result;

	}

	public void setResult(String result) {

		this.result = result;

	}

	public String excuteAjax(){	

		try {

			String name = request.getParameter("name");

			int age = Integer.parseInt(request.getParameter("age")); 

			String position = request.getParameter("position");

			Map<String,Object> map = new HashMap<String,Object>();

			map.put("name", name);

			map.put("age",age);

			map.put("position", position);			

			JSONObject json = JSONObject.fromObject(map);

			result = json.toString();

		} catch (Exception e) {

			e.printStackTrace();

		}

		return SUCCESS;

	}	

}

这是前端页面的代码：

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<!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>Simpleton Demo | struts+ajax返回json类型数据</title>



<link rel="shortcut icon" type="image/x-icon" href="images/Icon.png" />

<link rel="stylesheet" type="text/css" href="css/base.css" />



</head>

<body background="images/bg.gif">

	

	<div id="div_json">

		<h5>录入数据</h5>

		<br />

		<form action="#" method="post">

			<label for="name">姓名：</label><input type="text" name="name" />

			<label for="age">年龄：</label><input type="text" name="age" />

			<label for="position">职务：</label><input type="text" name="position" />

			<input type="button" class="btn" value="提交结果"/>

		</form>

		<br />

		<h5>显示结果</h5>

		<br />

		<ul>

			<li>姓名：<span id="s_name">赞无数据</span></li>

			<li class="li_layout">年龄：<span id="s_age">暂无数据</span></li>

			<li class="li_layout">职务：<span id="s_position">暂无数据</span></li>

		</ul>

	</div>

	

	<div id="authorgraph"><img alt="" src="images/autograph.gif"></div>

	

	<script type="text/javascript" src="js/jquery-1.8.2.js"></script>

	<script type="text/javascript">

		function btn(){

			var $btn = $("input.btn");//获取按钮元素

			$btn.bind("click",function(){

				

				$.ajax({

					type:"post",

 //需要用来处理ajax请求的action,excuteAjax为处理的方法名，JsonAction为action名

					url:"excuteAjaxJsonAction",

                                        //设置数据源

					data:{

						name:$("input[name=name]").val(),

						age:$("input[name=age]").val(),

						position:$("input[name=position]").val()

					},

					dataType:"json",

					success:function(data){

//将数据转换成json类型，可以把data用alert()输出出来看看到底是什么样的结构

						var d = eval("("+data+")");						

						$("#s_name").text(""+d.name+"");

						$("#s_age").text(""+d.age+"");

						$("#s_position").text(""+d.position+"");

						

					},

					error:function(){

						alert("系统异常，请稍后重试！");

					}//这里不要加","

				});

			});

		}

	

		/* 页面加载完成，绑定事件 */

		$(document).ready(function(){			

			btn();//点击提交，执行ajax

		});

	</script>

</body>

</html>

这是struts.xml的配置文件：



<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts PUBLIC

    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

	 <include file="struts-default.xml" />

    <package name="ynwi" extends="struts-default,json-default">

		<action name="*JsonAction" method="{1}" class="action.JsonAction">

			<result name="fail"></result>

			<result type="json">

				<param name="root">result</param>

			</result>

		</action>

    </package>

</struts>

这是web.xml配置文件



<?xml version="1.0" encoding="UTF-8"?>

<web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">



	<display-name>SSH Project</display-name>



	<filter>

		<filter-name>struts2</filter-name>

		<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>

	</filter>



	<filter-mapping>

		<filter-name>struts2</filter-name>

		<url-pattern>/*</url-pattern>

	</filter-mapping>



	<listener>

		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

	</listener>



	<welcome-file-list>

		<welcome-file>login.jsp</welcome-file>

	</welcome-file-list>



</web-app>

以下是我引入的jar包：

这是chrome浏览器控制台报的错：

====================================================================================
报错信息在一楼！

...全文

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tangwwip 2016-08-23

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引用 2 楼 huwang14 的回复:

原因找到了，把xwork的jar包替换成低版本的即可！ struts2项目启动时报错： java.lang.ClassNotFoundException:org.apache.commons.lang.xwork.StringUtils。是因为struts2-convention-plugin-xxxxxx.jar 某个版本的SEOActionNameBuilder类引用了 org.apache.commons.lang.xwork.StringUtils; 此类存在于xwork-core-2.1.6.jar，更高的版本已经没有这个类了。解决的方法是，使用高版本的struts2-convention-plugin-xxxxxx.jar，最好使用struts2 lib中配套的jar。

这算自问自答吧

nikyotensai 2016-08-23

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引用 2 楼 huwang14 的回复:

原因找到了，把xwork的jar包替换成低版本的即可！ struts2项目启动时报错： java.lang.ClassNotFoundException:org.apache.commons.lang.xwork.StringUtils。是因为struts2-convention-plugin-xxxxxx.jar 某个版本的SEOActionNameBuilder类引用了 org.apache.commons.lang.xwork.StringUtils; 此类存在于xwork-core-2.1.6.jar，更高的版本已经没有这个类了。解决的方法是，使用高版本的struts2-convention-plugin-xxxxxx.jar，最好使用struts2 lib中配套的jar。

赞一个

海澜百丈冰 2016-08-22

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package action;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import net.sf.json.JSONObject;
import org.apache.struts2.interceptor.ServletRequestAware;
import com.opensymphony.xwork2.ActionSupport;
public class JsonAction extends ActionSupport implements ServletRequestAware{
    private static final long serialVersionUID = 1L;   
    private HttpServletRequest request;
    private String result;
    public void setServletRequest(HttpServletRequest arg0) {
        this.request = arg0;
    }
    public String getResult() {
        return result;
    }
    public void setResult(String result) {
        this.result = result;
    }
    /*加个返回的*/
    public String excuteAjax(HttpServletResponse response){   
        try {
            String name = request.getParameter("name");
            int age = Integer.parseInt(request.getParameter("age")); 
            String position = request.getParameter("position");
            Map<String,Object> map = new HashMap<String,Object>();
            map.put("name", name);
            map.put("age",age);
            map.put("position", position);           
            JSONObject json = JSONObject.fromObject(map);
            result = json.toString();
            response.getWriter().print(result );
        } catch (Exception e) {
            e.printStackTrace();
        }
        return SUCCESS;//不需要加返回加过的response已经将转化的json传到前端了
    }   
}

Qrcode2 2016-08-19

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统一管理包的好处....尽量不要自己配,自己配也要搭配着

weige_li 2016-08-18

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建议使用maven管理jar包

wuyukunbi 2016-08-02

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不错。。。。。。。

今天晴 2016-08-01

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那为什么别人的可以，你copy过来就不可以了呢

Bug开发攻城狮 2016-08-01

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nice 一起学习

I,Frankenstein 2016-07-30

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不错不错，散分吧！

阳光越来越暖 2016-07-30

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恭喜.....

huwang14 2016-07-30

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原因找到了，把xwork的jar包替换成低版本的即可！ struts2项目启动时报错： java.lang.ClassNotFoundException:org.apache.commons.lang.xwork.StringUtils。是因为struts2-convention-plugin-xxxxxx.jar 某个版本的SEOActionNameBuilder类引用了 org.apache.commons.lang.xwork.StringUtils; 此类存在于xwork-core-2.1.6.jar，更高的版本已经没有这个类了。解决的方法是，使用高版本的struts2-convention-plugin-xxxxxx.jar，最好使用struts2 lib中配套的jar。

huwang14 2016-07-29

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这是eclipse控制台报的错：严重: Servlet.service() for servlet [default] in context with path [/SSHProject] threw exception [Filter execution threw an exception] with root cause java.lang.ClassNotFoundException: org.apache.commons.lang.xwork.StringUtils at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1858) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1701) at org.apache.struts2.json.SerializationParams.<init>(SerializationParams.java:57) at org.apache.struts2.json.JSONResult.writeToResponse(JSONResult.java:214) at org.apache.struts2.json.JSONResult.execute(JSONResult.java:204) at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:374) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:278) at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265) at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:211) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:211) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:90) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:192) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249) at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54) at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:510) at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Unknown Source)