struts2 中使用 json需要的jar包以及配置
commons-lang-2.4.jar；
json-lib-2.3-jdk13.jar；
jsonplugin-0[1].32.jar；
ezmorph-1.0.2.jar；
commons-beanutils-1.7.0.jar；
commons-collections-3.2.1.jar（这个包要注意版本,我用2.1不行
）
还需要把jquery-1[1].2.6.pack.js；
struts.xml配置：
<?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>
< package name="ajax" extends="json-default">
<action name="testAction" class="model.testAction">
<result type="json">/index.jsp</result>
</action>
< /package>
< /struts>
testAction.java
package model;
import net.sf.json.JSONObject;
import com.opensymphony.xwork2.ActionSupport;
public class testAction extends ActionSupport {
User user;
String result;
@Override
public String execute() throws Exception {
JSONObject js=JSONObject.fromObject(user) ;
System.out.println(js);
result=js.toString();
return SUCCESS;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public String getResult() {
return result;
}
public void setResult(String result) {
this.result = result;
}
}
package model;
public class User {
String username;
String password;
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
}
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
< %@ taglib prefix="s" uri="/struts-tags"%>
< %
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%>">
<title>My JSP 'index.jsp' starting page</title>
< meta http-equiv="pragma" content="no-cache">
< meta http-equiv="cache-control" content="no-cache">
< meta http-equiv="expires" content="0">
< meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
< meta http-equiv="description" content="This is my page">
< !--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
< script type="text/javascript" src="<%=path %>/js/jquery-1[1].2.6.pack.js">
< /script>
< script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
var params=$("input").serialize();
$.ajax({
url:"testAction.action",
type:"post",
dataType:"json",
data:params,
success:update_page
});
});
});
function update_page(result){
var json=eval(result);
alert(json);
var str="姓名："+json.user.username+"<br>";
str+="密码："+json.user.password+"<br>";
$("#result").html(str);
}
< /script>
< /head>
< body>
<div id="result">
</div>
<s:form action="testAction" method="post">
<s:textfield label="用户名" name="user.username" />
<s:textfield label="密码" name="user.password" />
<button>
提交
</button>
</s:form>
</body>
< /html>