通过Servlet创建服务器端JSON数据

服务端提供JSON数据接口：http://localhost:8080/JSONInterface/servlet/jsservlet

首先要导入项目所需要的jar包。

package com.shuai.JsonManager;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

//import net.sf.json.JSONObject;
import org.json.JSONObject; 

public class jsservlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public jsservlet() {
		super();
	}

	/**
	 * Destruction of the servlet. 

	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. 

	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		  this.doPost(request, response);
	}

	/**
	 * The doPost method of the servlet. 

	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	 @SuppressWarnings({ "rawtypes", "unchecked" })
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		  response.setContentType("text/html");
		  response.setCharacterEncoding("UTF-8");      //解决中文乱码问题

		  PrintWriter out = response.getWriter();
		  Map map = new HashMap(); 

		  map.put("name", "Dana、Li"); 
		  map.put("age", new Integer(22)); 
		  map.put("Provinces", new String("广东省")); 
		  map.put("city", new String("珠海市")); 
		  map.put("Master", new String("C、C++、Linux、Java"));
		  JSONObject json =new JSONObject(map);
		  
		  //out.write(json.toString());
		  out.println(json);
		  out.flush();
		  out.close();
	}

	/**
	 * Initialization of the servlet. 

	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}

在Tomcat服务器上部署项目，然后运行：