日期:2014-05-16 浏览次数:20419 次
1、struts2 要支持json,需要先引入包,包的下载地址如下:
http://code.google.com/p/jsonplugin/downloads/list
2、根据struts2的版本,选择jar包。
3、配置struts.xml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> <package name="TestJson" extends="json-default,struts-default" namespace="/bbs"> <action name="GoView" class="com.json.action.JsonAction" method="goView"> <result name="success">/GOView.jsp</result> </action> <action name="getUserName" class="com.json.action.JsonAction" method="getUserName"> <result type="json"/> </action> </package> </struts>
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4、JAVA类信息如下:
public class JsonAction extends ActionSupport { private static final long serialVersionUID = 105155412743741566L; private User user; public String goView() throws Exception { return SUCCESS; } public String getUserName() throws Exception { return SUCCESS; } public User getUser() { return user; } public void setUser(User user) { this.user = user; } }
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5、JSP页面如下:
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <base href="<%=basePath%>"> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <title>JSON学习</title> <script language="javascript" type="text/javascript" src="<%=basePath%>JQuery/jquery-1.6.js"></script> <script type="text/javascript"> function testJSON() { var username = "isoftstone"; $.ajax({ type:'post', url:'bbs/getUserName.action', dataType:'json', data:{ "user.username":username }, success:function(msg){ alert(msg.user.username); } }); } </script> </head> <body> <input type="button" value="测试JSON" onClick="JavaScript:testJSON()"/> </body> </html>
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6、运行程序及可。
7、注意事项:
(1) 引入的包要正确;
(2) struts.xml的package定义要正确:
<package name="TestJson" extends="json-default,struts-default" namespace="/bbs">
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(3) JQuery 使用ajax 接受数据的格式是:JSON。