在Servlet中使用JSON，和上篇的使用相同，只不过多了配置web.xml的内容

    servlet代码如下：

import java.io.IOException;import java.io.PrintWriter;import java.util.ArrayList;import java.util.List;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import net.sf.json.JSONArray;public class JSONServlet extends HttpServlet {    private static final long serialVersionUID = 1L;    public JSONServlet() {        super();    }    public void destroy() {        super.destroy();     }    public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        doPost(request, response);    }    public void doPost(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        //使用JSONArray测试        JSONArray jsonArray = new JSONArray();        jsonArray.add("MCA");        jsonArray.add("kevin");        jsonArray.add("15-12-1998");        jsonArray.add(new Double(12.3));        List
     
       list = new ArrayList
      
       ();         list.add("a collection added");        list.add("kevin collection test");        jsonArray.addAll(list);                //页面输出JSONArray的内容        PrintWriter out = response.getWriter();        out.print(jsonArray);        out.println("======================================");        for(int i=0;i
      
     

配置web.xml文件

     
       
          
       
        JSONServlet
           
       
        com.justinmobile.JSONServlet
         
        
          
       
        JSONServlet
           
       
        *.do
         
        
          
       
        index.jsp
         
      
     

访问页面

 

我们得到输出结果：

["MCA","kevin","15-12-1998",12.3,"a collection added","kevin collection test"]====================================== MCAkevin15-12-199812.3a collection addedkevin collection test