json-servlet-ajax

package com.sc.servlet; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import net.sf.json.JSONObject; public class MyServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { // TODO Auto-generated method stub super.doPost(req, resp); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { // 1.设置用户的响应格式 resp.setCharacterEncoding("utf-8"); /* * 2.读取参数： String username=req.getParameter("username"); String * password=req.getParameter("password"); * * System.out.println(username); System.out.println(password); * 3.将封装的map对象转化成json Map map=new HashMap(); map.put("username", * "servlet:wupeng"); map.put("password", "servlet:123123"); * * JSONObject json=JSONObject.fromObject(map); */ /*************************************/ String json = req.getParameter("json"); System.out.println(json); JSONObject jsonObject = null; try { jsonObject = JSONObject.fromObject(json); jsonObject.getString("username"); } catch (Exception e) { e.printStackTrace(); }; System.out.println("jsonObject :" + jsonObject); PrintWriter out = resp.getWriter(); out.print(jsonObject); out.flush(); out.close(); } }