本文主要包含一个struts2+ajax+json的使用实例
步骤如下
1.准备工作
①ajax使用Jquery:jquery-1.4.2.min.js
②struts2与json的依赖包:struts2-json-plugin-2.2.3.jar,json-lib
PS:版本可自己控制!~
2.过程
①引入json依赖包
②编写action类
③配置struts.xml
④编写页面
⑤测试
参考链接
struts2 + ajax + json的结合使用,实例讲解 - tfy1332的专栏 - 博客频道 - CSDN.NET
Struts2 和 Ajax 交互 - - ITeye技术网站
Java中:struts2+jQuery+ajax调用演示 - anyx的专栏 - 博客频道 - CSDN.NET
实例
action类
package com.zxt.action;
import java.util.ArrayList;
import java.util.List;
import com.opensymphony.xwork2.ActionSupport;
public class JsonAction extends ActionSupport {
/**
*
*/
private static final long serialVersionUID = 7443363719737618408L;
/**
* 姓名
*/
private String name;
/**
* 身高
*/
private String inch;
/**
* ajax返回结果,也可是其他类型的,这里以String类型为例
*/
private List<PersonBean> result;
@Override
public String execute() throws Exception {
// TODO Auto-generated method stub
List<PersonBean> pList = new ArrayList<PersonBean>();
if ("张三".equals(name)) {
PersonBean p1 = new PersonBean();
PersonBean p2 = new PersonBean();
p1.setId(1);
p1.setName("a");
p2.setId(2);
p2.setName("b");
pList.add(p1);
pList.add(p2);
result = pList;
} else {
PersonBean p3 = new PersonBean();
PersonBean p4 = new PersonBean();
p3.setId(3);
p3.setName("c");
p4.setId(4);
p4.setName("d");
pList.add(p3);
pList.add(p4);
result = pList;
}
return SUCCESS;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getInch() {
return inch;
}
public void setInch(String inch) {
this.inch = inch;
}
/**
*
* @Title: getResult
* @Description:json调取结果
* @param @return
* @return String
* @throws
*/
public List<PersonBean> getResult() {
return result;
}
}
struts.xml配置文件
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
"http://struts.apache.org/dtds/struts-2.1.7.dtd">
<struts>
<constant name="struts.devMode" value="true"/>
<package name="ajax" extends="json-default">
<action name="jsonAjax" class="com.zxt.action.JsonAction">
<!-- 将返回类型设置为json -->
<result type="json"></result>
</action>
</package>
</struts>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name></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>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>测试</title>
<script type="text/javascript" src="js/jquery-1.4.2.js"></script>
<script type="text/javascript">
$(function() {
$("#tj").click(function() {
//提交的参数,name和inch是和struts action中对应的接收变量
/*var data = {
"list" : [ {
"id" : 1,
"content" : "测试信息1111"
}, {
"id" : 2,
"content" : "测试信息2222"
} ]
};
$.each(data.list, function(i, item) {
alert(item.id);
alert(item.content);
});*/
var params = {
name : $("#xm").val(),
inch : $("#sg").val()
};
$.ajax({
type : "POST",
url : "jsonAjax.action",
data : params,
dataType : "text", //ajax返回值设置为text(json格式也可用它返回,可打印出结果,也可设置成json)
success : function(json) {
var obj = $.parseJSON(json); //使用这个方法解析json
var state_value = obj.result; //result是和action中定义的result变量的get方法对应的
$.each(state_value, function(i, item) {
alert(item.id);
alert(item.name);
});
//alert(state_value);
},
error : function(json) {
alert("json=" + json);
return false;
}
});
});
});
</script>
</head>
<body>
<span>姓名:</span>
<input id="xm" type="text">
<br />
<span>身高:</span>
<input id="sg" type="text">
<br />
<input type="button" value="提交" id="tj">
</body>
</html>
本例中的jsp解析了从服务器传来的list,解析list具体方法如下
var data = {"list":[{"id":1,"content":"测试信息1111"},{"id":2,"content":"测试信息2222"}]}
$.each(data.list, function(i, item) {
alert(item.id);
alert(item.content);
});
源代码地址
ssh/AJAX_Struts at master · whuhan2013/ssh