struts中返回json

1.Struts的配置：

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"> <struts> <package name="default" extends="json-default"> <action name="aa" class="com......Action"> <result name="jsonMap" type="json"> <param name="root">pageMap</param>

<param name="excludeProperties">   \[\d+\].account </param> </result> </action> </package> </struts>    

2.action:

public class AAAction extends ActionSupport { private Map<String, Object> pageMap = null; public String execute(){ pageMap=new HashMap<String, Object>(); pageMap.put("Name", "测试json"); return "jsonMap"; return "fail"; } public Map<String, Object> getPageMap() { return pageMap; } }

3.返回

{"Name":"测试json"}