Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package wap.twitter.controller; import com.google.gson.Gson; import java.io.IOException; import java.io.PrintWriter; import java.util.List; import java.util.logging.Level; import java.util.logging.Logger; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import twitter4j.GeoLocation; import twitter4j.TwitterException; import wap.twitter.model.Tweet; import wap.twitter.model.TwitterUtility; /** * * @author bwamie */ @WebServlet(name = "TrendsServlet", urlPatterns = { "/trends" }) public class TrendsServlet extends HttpServlet { protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, TwitterException { } @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.getRequestDispatcher("trends.jsp").forward(request, response); } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("Trending====================Post"); response.setContentType("text/json;charset=UTF-8"); TwitterUtility tu = new TwitterUtility(); String lat = request.getParameter("lat"); String lng = request.getParameter("lng"); if (lat != null && lng != null) { try { String jsn = (new Gson()) .toJson(tu.getTrends(new GeoLocation(Double.parseDouble(lat), Double.parseDouble(lng)))); System.out.println(jsn); response.getWriter().write(jsn); } catch (TwitterException ex) { Logger.getLogger(TrendsServlet.class.getName()).log(Level.SEVERE, null, ex); } } } @Override public String getServletInfo() { return "Short description"; } }