1 package com.gxl.servlet;
2
3 import java.io.IOException;
4
5 import javax.servlet.ServletException;
6 import javax.servlet.annotation.WebServlet;
7 import javax.servlet.http.HttpServlet;
8 import javax.servlet.http.HttpServletRequest;
9 import javax.servlet.http.HttpServletResponse;
10 import javax.servlet.http.HttpSession;
11
12 import com.gxl.dao.UsersDao;
13
14 @WebServlet("/login")
15 public class LoginServlet extends HttpServlet {
16
17 @Override
18 protected void doPost(HttpServletRequest req, HttpServletResponse resp)
19 throws ServletException, IOException {
20 // TODO Auto-generated method stub
21 req.setCharacterEncoding("UTF-8");
22 resp.setCharacterEncoding("UTF-8");
23 doGet(req, resp);
24 }
25
26 @Override
27 protected void doGet(HttpServletRequest request, HttpServletResponse response)
28 throws ServletException, IOException {
29 String uname=request.getParameter("uname");
30 String upwd=request.getParameter("upwd");
31 HttpSession session = request.getSession();
32 UsersDao ud=new UsersDao();
33 if(ud.login(uname, upwd)){
34 session.setAttribute("uname", uname);
35 request.getRequestDispatcher("main.jsp").forward(request, response);
36 }else{
37 response.sendRedirect("no.jsp");
38 }
39 }
40
41 }
1 package com.gxl.servlet;
2
3 import java.io.IOException;
4
5 import javax.servlet.ServletException;
6 import javax.servlet.annotation.WebServlet;
7 import javax.servlet.http.HttpServlet;
8 import javax.servlet.http.HttpServletRequest;
9 import javax.servlet.http.HttpServletResponse;
10
11 import com.gxl.dao.UsersDao;
12 import com.gxl.entity.Users;
13
14 @WebServlet("/register")
15 public class RegisterServlet extends HttpServlet {
16 @Override
17 protected void doPost(HttpServletRequest req, HttpServletResponse resp)
18 throws ServletException, IOException {
19 // TODO Auto-generated method stub
20 req.setCharacterEncoding("UTF-8");
21 resp.setCharacterEncoding("UTF-8");
22 doGet(req, resp);
23 }
24
25 @Override
26 protected void doGet(HttpServletRequest request, HttpServletResponse response)
27 throws ServletException, IOException {
28 String uname=request.getParameter("username");
29 String upwd=request.getParameter("password");
30 String email=request.getParameter("email");
31
32 UsersDao ud=new UsersDao();
33 Users u=new Users(uname,upwd,email);
34 ud.register(u);
35 response.sendRedirect("login.jsp");
36 }
37 }
1 package com.gxl.servlet;
2
3 import java.io.IOException;
4
5 import javax.servlet.ServletException;
6 import javax.servlet.annotation.WebServlet;
7 import javax.servlet.http.HttpServlet;
8 import javax.servlet.http.HttpServletRequest;
9 import javax.servlet.http.HttpServletResponse;
10 import javax.servlet.http.HttpSession;
11
12 import com.gxl.dao.MsgDao;
13 import com.gxl.entity.Msg;
14
15 @WebServlet("/write")
16 public class WriteServlet extends HttpServlet {
17 @Override
18 protected void doPost(HttpServletRequest req, HttpServletResponse resp)
19 throws ServletException, IOException {
20 // TODO Auto-generated method stub
21 req.setCharacterEncoding("UTF-8");
22 resp.setCharacterEncoding("UTF-8");
23 doGet(req, resp);
24 }
25
26 @Override
27 protected void doGet(HttpServletRequest request,
28 HttpServletResponse response) throws ServletException, IOException {
29 HttpSession session = request.getSession();
30 String title = request.getParameter("title");
31 String content = request.getParameter("content");
32 String receiver = request.getParameter("sendto");
33 String sender = (String) session.getAttribute("uname");
34
35 Msg m = new Msg();
36 m.setSendto(receiver);
37 m.setUname(sender);
38 m.setTitle(title);
39 m.setMsgcontent(content);
40
41 MsgDao md = new MsgDao();
42 md.writeMsg(m);
43 request.getRequestDispatcher("main.jsp").forward(request, response);
44 }
45 }
1 package com.gxl.servlet;
2
3 import java.io.IOException;
4
5 import javax.servlet.ServletException;
6 import javax.servlet.annotation.WebServlet;
7 import javax.servlet.http.HttpServlet;
8 import javax.servlet.http.HttpServletRequest;
9 import javax.servlet.http.HttpServletResponse;
10
11 import com.gxl.dao.MsgDao;
12
13 @WebServlet("/del")
14 public class DelServlet extends HttpServlet {
15 @Override
16 protected void doPost(HttpServletRequest req, HttpServletResponse resp)
17 throws ServletException, IOException {
18 // TODO Auto-generated method stub
19 req.setCharacterEncoding("UTF-8");
20 resp.setCharacterEncoding("UTF-8");
21 doGet(req, resp);
22 }
23
24 @Override
25 protected void doGet(HttpServletRequest request,
26 HttpServletResponse response) throws ServletException, IOException {
27 int mid = Integer.parseInt(request.getParameter("mid"));
28 MsgDao md = new MsgDao();
29 md.delMsg(mid);
30 request.getRequestDispatcher("main.jsp").forward(request, response);
31 }
32 }
