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package cn.demo;
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import java.io.IOException;
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import java.io.PrintWriter;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import com.google.gson.JsonArray;
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import com.google.gson.JsonObject;
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/**
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*
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* @author wanzhongqiang
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* 创建一个类继承HttpServlet类
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* 创建一个Servlet类的名称为Test继承HttpServlet类同时覆写doGet方法和doPost方法。
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*
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*/
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public class Test extends HttpServlet {
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protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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setResponseAccess(response);
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// 设置响应内容类型
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// 设置响应内容类型
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response.setContentType("text/json; charset=utf-8");
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PrintWriter out = response.getWriter();
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//创建一个json对象，相当于一个容器，当然这个容器还可以套在另外一个容器里面，这个看业务需要
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JsonObject jsonContainer =new JsonObject();
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//为当前的json对象添加键值对
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jsonContainer.addProperty("count", 5);
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jsonContainer.addProperty("status", 1);
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//构建json数组，数组里面也是json
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JsonArray arrayPlayer = new JsonArray();
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//构建json数组中的对象
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JsonObject player1 = new JsonObject();
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player1.addProperty("addr", "湖南省长沙市雨花区中意一路与湘府路交汇处");
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player1.addProperty("name", "湖南 长沙市 德思勤四季汇店");
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player1.addProperty("tel", "0731-88990501");
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JsonObject player2 = new JsonObject();
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player2.addProperty("addr", "浙江省杭州市临安区锦北街道农林大路99号");
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player2.addProperty("name", "浙江 杭州市 临安宝龙店");
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player2.addProperty("tel", "0571-66558052");
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JsonObject player3 = new JsonObject();
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player3.addProperty("addr", "广东省深圳市光明区松白路与长春路交汇处");
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player3.addProperty("name", "广东 深圳市 光明天汇城购物中心店");
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player3.addProperty("tel", "0755-22337379");
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JsonObject player4 = new JsonObject();
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player4.addProperty("addr", "上海市青浦区淀山湖大道899弄B区—B1-A万达茂广场");
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player4.addProperty("name", "上海 青浦万达茂店");
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player4.addProperty("tel", "021-88220228");
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JsonObject player5 = new JsonObject();
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player5.addProperty("addr", "广东省广州市增城区新塘镇章陂工业大道万达广场");
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player5.addProperty("name", "广东 广州市 新塘万达广场店");
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player5.addProperty("tel", "020-88838779");
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//将json对象添加到数组中
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arrayPlayer.add(player1);
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arrayPlayer.add(player2);
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arrayPlayer.add(player3);
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arrayPlayer.add(player4);
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arrayPlayer.add(player5);
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//最后将json数组装到jsonContainer中
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jsonContainer.add("shops", arrayPlayer);
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PrintWriter writer = response.getWriter();
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System.out.println(jsonContainer);
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out.println(jsonContainer);
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}
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/**
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* @author wanzhongqiang
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*/
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protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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doGet(request, response);
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}
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private void setResponseAccess(HttpServletResponse response) {
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// 允许该域发起跨域请求
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response.setHeader("Access-Control-Allow-Origin", "*");//*允许任何域
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// 允许的外域请求方式
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response.setHeader("Access-Control-Allow-Methods", "POST, GET");
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// 在999999秒内，不需要再发送预检验请求，可以缓存该结果
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response.setHeader("Access-Control-Max-Age", "999999");
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// 允许跨域请求包含某请求头,x-requested-with请求头为异步请求
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response.setHeader("Access-Control-Allow-Headers",
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"x-requested-with");
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}
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} |
