Android之Json

public class JasonAction extends HttpServlet {

    private JsonService service;
    
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        this.doPost(request,response);
        
    }

    /**
     * The doPost method of the servlet. <br>
     *
     * 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
     */
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        PrintWriter out = response.getWriter();
        System.out.println("sd");
        //String jsonString = JsonTools.createJsonString("person", service.getlistPerson());
        String jsonString = "";
        String action_flag = request.getParameter("action_flag");
        if(action_flag.equals("person")){
            jsonString = JsonTools.createJsonString("person",service.getPerson());
        }else if(action_flag.equals("persons")){
            jsonString = JsonTools.createJsonString("persons",service.getlistPerson());
        }else if(action_flag.equals("liststring")){
            jsonString = JsonTools.createJsonString("liststring",service.getListString());
        }else if(action_flag.equals("listmap")){
            jsonString = JsonTools.createJsonString("listmap",service.getListMaps());
        }
        System.out.println(jsonString);
        out.print(jsonString);
        out.flush();
        out.close();
    }

    @Override
    public void init() throws ServletException {
        // TODO Auto-generated method stub
        service = new JsonService();
    }
}