friendservlet.java

仿校内网站

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package servlet;

import java.io.*;

import java.sql.ResultSet;
import javax.servlet.*;
import javax.servlet.http.*;
import myTools.*;

/**
 *
 * @author zhlm
 */
public class FriendServlet extends HttpServlet {
   
    /** 
    * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
    * @param request servlet request
    * @param response servlet response
    */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        String operation = request.getParameter("operation");
        System.out.println(operation);
        DataBase db = new DataBase();
        ResultSet rs = null;
        
        db.connectToDB();
        try {
            if(operation == null){
                System.out.println("FRIENDS SERVLET ERROR");
                response.sendRedirect("error.jsp");
            }else if(operation.equals("add")){
                String user_id = (String)request.getSession().getAttribute("user_id");
                String be_visited_id = (String)request.getSession().getAttribute("be_visited_id");
                if(user_id.equals(be_visited_id)){
                    response.sendRedirect("error.jsp?error_id=2");
                }else{
                    String time = TimeMaker.getTime();
                    
                    TimeMaker.makeFriends(user_id, be_visited_id, time);
                    response.sendRedirect("friends.jsp");
                }
            }
        } finally { 
            
        }
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet 方法。单击左侧的 + 号以编辑代码。">
    /** 
    * Handles the HTTP <code>GET</code> method.
    * @param request servlet request
    * @param response servlet response
    */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
    * Handles the HTTP <code>POST</code> method.
    * @param request servlet request
    * @param response servlet response
    */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
    * Returns a short description of the servlet.
    */
    public String getServletInfo() {
        return "Short description";
    }
    // </editor-fold>
}