struts2的使用json问题
前台js请求及处理

<script type="text/javascript" src="<%=path%>/js/jquery.js"></script><script type="text/javascript">$(function(){         $.getJSON("login.action",{},function(result){   var r = eval(result);//将json字符串转为js对象   alert(r.name);          });});</script>

struts.xml配置

<package name="default" namespace="/" extends="json-default">     <action name="login" method="login">        <result type="json"></result>        </action></package>

HelloJsonAction.java代码

public class HelloJsonAction extends ActionSupport{private String name;//省略getter和setter@JSONpublic String login(){this.name = "dd";return SUCCESS;}}

还有问题要注意：
1、要导入struts2-json-plugin-2.2.1.jar和json-lib-2.1-jdk15.jar