第十三周作业

package com.gd.servelet;

import java.io.IOException;
import java.io.PrintWriter;

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

import com.gd.dao.MsgDao;

public class DeleteServlet extends HttpServlet {

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

    /**
         * Destruction of the servlet. <br>
         */
    public void destroy() {
        super.destroy(); // Just puts "destroy" string in log
        // Put your code here
    }

    /**
         * The doGet method of the servlet. <br>
         *
         * 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 {

        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 {

        int id = Integer.parseInt(request.getParameter("id"));
        MsgDao md = new MsgDao();
        md.delMail(id);
        response.setHeader("refresh", "2;url=main.jsp");
    }

    /**
         * Initialization of the servlet. <br>
         *
         * @throws ServletException if an error occurs
         */
    public void init() throws ServletException {
        // Put your code here
    }

}

package com.gd.servelet;

import java.io.IOException;
import java.io.PrintWriter;

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

import com.gd.dao.UsersDao;

public class Dologinservlet extends HttpServlet {

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

    /**
         * Destruction of the servlet. <br>
         */
    public void destroy() {
        super.destroy(); // Just puts "destroy" string in log
        // Put your code here
    }

    /**
         * The doGet method of the servlet. <br>
         *
         * 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 {

        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 {

        String uname = request.getParameter("uname");
        String upwd = request.getParameter("upwd");

        UsersDao ud = new UsersDao();
        if (ud.login(uname, upwd)) {
            request.getSession().setAttribute("uname", uname);
            request.getRequestDispatcher("main.jsp").forward(request, response);
        } else {
            
            response.setHeader("refresh", "5;url=denglu.jsp");
        }
    }

    /**
         * Initialization of the servlet. <br>
         *
         * @throws ServletException if an error occurs
         */
    public void init() throws ServletException {
        // Put your code here
    }

}

package com.gd.servelet;

import java.io.IOException;
import java.io.PrintWriter;

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

import com.gd.dao.MsgDao;
import com.gd.entity.Msg;

public class DowriteServlet extends HttpServlet {

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

    /**
         * Destruction of the servlet. <br>
         */
    public void destroy() {
        super.destroy(); // Just puts "destroy" string in log
        // Put your code here
    }

    /**
         * The doGet method of the servlet. <br>
         *
         * 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 {

        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 {

        request.setCharacterEncoding("utf-8");
        String uname = (String) request.getSession().getAttribute("uname");
        String sendto = request.getParameter("receiver");
        String title = request.getParameter("title");
        String content = request.getParameter("content");

        Msg m = new Msg();
        m.setMsgcontent(content);
        m.setUsername(uname);
        m.setSendto(sendto);
        m.setTitle(title);

        MsgDao md = new MsgDao();
        md.addMsg(m);

        response.setHeader("refresh", "3;url=main.jsp");
    }

    /**
         * Initialization of the servlet. <br>
         *
         * @throws ServletException if an error occurs
         */
    public void init() throws ServletException {
        // Put your code here
    }

}

package com.gd.servelet;

import java.io.IOException;
import java.io.PrintWriter;

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

import com.gd.dao.MsgDao;
import com.gd.dao.UsersDao;

public class DoregServlet extends HttpServlet {

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

    /**
         * Destruction of the servlet. <br>
         */
    public void destroy() {
        super.destroy(); // Just puts "destroy" string in log
        // Put your code here
    }

    /**
         * The doGet method of the servlet. <br>
         *
         * 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 {

       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 {

           String uname=request.getParameter("uname");
           String upwd=request.getParameter("upwd");
           UsersDao ud=new UsersDao();
            MsgDao md=new MsgDao();
            if(ud.register(uname, upwd)>0){
            request.getSession().setAttribute("uname", uname);
            request.getRequestDispatcher("denglu.jsp").forward(request,response);
            
            }else{
            out.print("注册失败，请重新注册.......");
            response.setHeader("refresh","5;url=register.jsp"); }
   } /** 
     * Initialization of the servlet. <br> 
     * * @throws ServletException if an error occurs 
     */ public void init() throws ServletException { 
      // Put your code here }
      }