Struts2+Jquery实现ajax并返回json类型数据

package com.simpleton.demo.action; import java.util.HashMap; import java.util.Map; import javax.servlet.http.HttpServletRequest; import net.sf.json.JSONObject; import org.apache.struts2.interceptor.ServletRequestAware; import com.opensymphony.xwork2.ActionSupport; public class JsonAction extends ActionSupport implements ServletRequestAware{ private static final long serialVersionUID = 1L; private HttpServletRequest request; private String result; public void setServletRequest(HttpServletRequest arg0) { this.request = arg0; } public String getResult() { return result; } public void setResult(String result) { this.result = result; } /** * 处理ajax请求 * @return SUCCESS */ public String excuteAjax(){ try { //获取数据 String name = request.getParameter("name"); int age = Integer.parseInt(request.getParameter("age")); String position = request.getParameter("position"); //将数据存储在map里，再转换成json类型数据，也可以自己手动构造json类型数据 Map<String,Object> map = new HashMap<String,Object>(); map.put("name", name); map.put("age",age); map.put("position", position); JSONObject json = JSONObject.fromObject(map);//将map对象转换成json类型数据 result = json.toString();//给result赋值，传递给页面 } catch (Exception e) { e.printStackTrace(); } return SUCCESS; } }