JSP第十三周作业
1.第十二周上机作业（邮件功能）的控制层代码改用为servlet实现。
1 package com.sk.servlet; 2 3 import java.io.IOException; 4 import java.io.PrintWriter; 5 6 7 import javax.servlet.ServletException; 8 import javax.servlet.annotation.WebServlet; 9 import javax.servlet.http.HttpServlet; 10 import javax.servlet.http.HttpServletRequest; 11 import javax.servlet.http.HttpServletResponse; 12 import javax.servlet.http.HttpSession; 13 14 import com.sk.dao.UsersDao; 15 @WebServlet("/dologin.do") 16 public class LoginServlet extends HttpServlet { 17 18 /** 19 * Constructor of the object. 20 */ 21 public LoginServlet() { 22 super(); 23 } 24 25 /** 26 * Destruction of the servlet. <br> 27 */ 28 public void destroy() { 29 super.destroy(); // Just puts "destroy" string in log 30 // Put your code here 31 } 32 33 /** 34 * The doGet method of the servlet. <br> 35 * 36 * This method is called when a form has its tag value method equals to get. 37 * 38 * @param request the request send by the client to the server 39 * @param response the response send by the server to the client 40 * @throws ServletException if an error occurred 41 * @throws IOException if an error occurred 42 */ 43 public void doGet(HttpServletRequest request, HttpServletResponse response) 44 throws ServletException, IOException { 45 doPost(request, response); 46 } 47 48 /** 49 * The doPost method of the servlet. <br> 50 * 51 * This method is called when a form has its tag value method equals to post. 52 * 53 * @param request the request send by the client to the server 54 * @param response the response send by the server to the client 55 * @throws ServletException if an error occurred 56 * @throws IOException if an error occurred 57 */ 58 public void doPost(HttpServletRequest request, HttpServletResponse response) 59 throws ServletException, IOException { 60 response.setContentType("text/html;charset=utf-8"); 61 request.setCharacterEncoding("utf-8"); 62 response.setCharacterEncoding("utf-8"); 63 String uname = request.getParameter("uname"); 64 String upwd = request.getParameter("upwd"); 65 UsersDao ud = new UsersDao(); 66 HttpSession session = request.getSession(); 67 PrintWriter out = response.getWriter(); 68 if (ud.login(uname, upwd)) { 69 session.setAttribute("uname", uname); 70 request.getRequestDispatcher("main.jsp").forward(request, response); 71 } else { 72 out.print("登录失败，即将跳回登录页....."); 73 response.setHeader("refresh", "2;url=login.jsp"); 74 } 75 } 76 77 /** 78 * Initialization of the servlet. <br> 79 * 80 * @throws ServletException if an error occurs 81 */ 82 public void init() throws ServletException { 83 // Put your code here 84 } 85 86 } LoginServlet
1 package com.sk.servlet; 2 3 import java.io.IOException; 4 import java.io.PrintWriter; 5 6 import javax.servlet.ServletException; 7 import javax.servlet.annotation.WebServlet; 8 import javax.servlet.http.HttpServlet; 9 import javax.servlet.http.HttpServletRequest; 10 import javax.servlet.http.HttpServletResponse; 11 12 import com.sk.dao.UsersDao; 13 import com.sk.entity.Users; 14 @WebServlet("/doregister.do") 15 public class RegisterServlet extends HttpServlet { 16 17 /** 18 * Constructor of the object. 19 */ 20 public RegisterServlet() { 21 super(); 22 } 23 24 /** 25 * Destruction of the servlet. <br> 26 */ 27 public void destroy() { 28 super.destroy(); // Just puts "destroy" string in log 29 // Put your code here 30 } 31 32 /** 33 * The doGet method of the servlet. <br> 34 * 35 * This method is called when a form has its tag value method equals to get. 36 * 37 * @param request the request send by the client to the server 38 * @param response the response send by the server to the client 39 * @throws ServletException if an error occurred 40 * @throws IOException if an error occurred 41 */ 42 public void doGet(HttpServletRequest request, HttpServletResponse response) 43 throws ServletException, IOException { 44 doPost(request, response); 45 } 46 47 /** 48 * The doPost method of the servlet. <br> 49 * 50 * This method is called when a form has its tag value method equals to post. 51 * 52 * @param request the request send by the client to the server 53 * @param response the response send by the server to the client 54 * @throws ServletException if an error occurred 55 * @throws IOException if an error occurred 56 */ 57 public void doPost(HttpServletRequest request, HttpServletResponse response) 58 throws ServletException, IOException { 59 response.setContentType("text/html;charset=utf-8"); 60 request.setCharacterEncoding("utf-8"); 61 response.setCharacterEncoding("utf-8"); 62 String uname = request.getParameter("uname"); 63 String upwd = request.getParameter("upwd"); 64 PrintWriter out = response.getWriter(); 65 Users u = new Users(); 66 u.setUname(uname); 67 u.setUpwd(upwd); 68 UsersDao ud = new UsersDao(); 69 int r = ud.reg(u); 70 if(r >= 1){ 71 request.getRequestDispatcher("login.jsp").forward(request, response); 72 }else{ 73 out.print("注册失败，即将跳回登录页....."); 74 response.setHeader("refresh", "3;url=register.jsp"); 75 } 76 } 77 78 /** 79 * Initialization of the servlet. <br> 80 * 81 * @throws ServletException if an error occurs 82 */ 83 public void init() throws ServletException { 84 // Put your code here 85 } 86 87 } RegisterServlet
1 package com.sk.servlet; 2 3 import java.io.IOException; 4 import java.io.PrintWriter; 5 6 import javax.servlet.ServletException; 7 import javax.servlet.annotation.WebServlet; 8 import javax.servlet.http.HttpServlet; 9 import javax.servlet.http.HttpServletRequest; 10 import javax.servlet.http.HttpServletResponse; 11 import javax.servlet.http.HttpSession; 12 13 import com.sk.dao.MsgDao; 14 import com.sk.entity.Msg; 15 @WebServlet("/dosend.do") 16 public class SendServlet extends HttpServlet { 17 18 /** 19 * Constructor of the object. 20 */ 21 public SendServlet() { 22 super(); 23 } 24 25 /** 26 * Destruction of the servlet. <br> 27 */ 28 public void destroy() { 29 super.destroy(); // Just puts "destroy" string in log 30 // Put your code here 31 } 32 33 /** 34 * The doGet method of the servlet. <br> 35 * 36 * This method is called when a form has its tag value method equals to get. 37 * 38 * @param request the request send by the client to the server 39 * @param response the response send by the server to the client 40 * @throws ServletException if an error occurred 41 * @throws IOException if an error occurred 42 */ 43 public void doGet(HttpServletRequest request, HttpServletResponse response) 44 throws ServletException, IOException { 45 46 doPost(request, response); 47 } 48 49 /** 50 * The doPost method of the servlet. <br> 51 * 52 * This method is called when a form has its tag value method equals to post. 53 * 54 * @param request the request send by the client to the server 55 * @param response the response send by the server to the client 56 * @throws ServletException if an error occurred 57 * @throws IOException if an error occurred 58 */ 59 public void doPost(HttpServletRequest request, HttpServletResponse response) 60 throws ServletException, IOException { 61 response.setContentType("text/html;charset=utf-8"); 62 request.setCharacterEncoding("utf-8"); 63 response.setCharacterEncoding("utf-8"); 64 HttpSession session=request.getSession(); 65 String uname = (String)session.getAttribute("uname");//发件人在session中获取 66 String title = request.getParameter("title"); 67 String username = request.getParameter("username"); 68 String msgcontent = request.getParameter("msgcontent"); 69 70 Msg m = new Msg(); 71 m.setTitle(title); 72 m.setMsgcontent(msgcontent); 73 m.setSendto(uname); 74 m.setUsername(username); 75 76 MsgDao md = new MsgDao(); 77 md.addMsg(m); 78 PrintWriter out = response.getWriter(); 79 out.print("发送成功，即将跳回首页......"); 80 response.setHeader("refresh", "3;url=main.jsp"); 81 } 82 83 /** 84 * Initialization of the servlet. <br> 85 * 86 * @throws ServletException if an error occurs 87 */ 88 public void init() throws ServletException { 89 // Put your code here 90 } 91 92 } SendServlet
1 package com.sk.servlet; 2 3 import java.io.IOException; 4 import java.io.PrintWriter; 5 6 import javax.servlet.ServletException; 7 import javax.servlet.annotation.WebServlet; 8 import javax.servlet.http.HttpServlet; 9 import javax.servlet.http.HttpServletRequest; 10 import javax.servlet.http.HttpServletResponse; 11 12 import com.sk.dao.MsgDao; 13 @WebServlet("/dodel.do") 14 public class DelServlet extends HttpServlet { 15 16 /** 17 * Constructor of the object. 18 */ 19 public DelServlet() { 20 super(); 21 } 22 23 /** 24 * Destruction of the servlet. <br> 25 */ 26 public void destroy() { 27 super.destroy(); // Just puts "destroy" string in log 28 // Put your code here 29 } 30 31 /** 32 * The doGet method of the servlet. <br> 33 * 34 * This method is called when a form has its tag value method equals to get. 35 * 36 * @param request the request send by the client to the server 37 * @param response the response send by the server to the client 38 * @throws ServletException if an error occurred 39 * @throws IOException if an error occurred 40 */ 41 public void doGet(HttpServletRequest request, HttpServletResponse response) 42 throws ServletException, IOException { 43 doPost(request, response); 44 } 45 46 /** 47 * The doPost method of the servlet. <br> 48 * 49 * This method is called when a form has its tag value method equals to post. 50 * 51 * @param request the request send by the client to the server 52 * @param response the response send by the server to the client 53 * @throws ServletException if an error occurred 54 * @throws IOException if an error occurred 55 */ 56 public void doPost(HttpServletRequest request, HttpServletResponse response) 57 throws ServletException, IOException { 58 response.setContentType("text/html;charset=utf-8"); 59 request.setCharacterEncoding("utf-8"); 60 response.setCharacterEncoding("utf-8"); 61 int id = Integer.parseInt(request.getParameter("id")); 62 MsgDao md = new MsgDao(); 63 md.delMsg(id); 64 response.sendRedirect("main.jsp"); 65 } 66 67 /** 68 * Initialization of the servlet. <br> 69 * 70 * @throws ServletException if an error occurs 71 */ 72 public void init() throws ServletException { 73 // Put your code here 74 } 75 76 } DelServlet
1 package com.sk.servlet; 2 3 import java.io.IOException; 4 import java.io.PrintWriter; 5 6 import javax.servlet.ServletException; 7 import javax.servlet.annotation.WebServlet; 8 import javax.servlet.http.HttpServlet; 9 import javax.servlet.http.HttpServletRequest; 10 import javax.servlet.http.HttpServletResponse; 11 import javax.servlet.http.HttpSession; 12 @WebServlet("/doquit.do") 13 public class QuitServlet extends HttpServlet { 14 15 /** 16 * Constructor of the object. 17 */ 18 public QuitServlet() { 19 super(); 20 } 21 22 /** 23 * Destruction of the servlet. <br> 24 */ 25 public void destroy() { 26 super.destroy(); // Just puts "destroy" string in log 27 // Put your code here 28 } 29 30 /** 31 * The doGet method of the servlet. <br> 32 * 33 * This method is called when a form has its tag value method equals to get. 34 * 35 * @param request the request send by the client to the server 36 * @param response the response send by the server to the client 37 * @throws ServletException if an error occurred 38 * @throws IOException if an error occurred 39 */ 40 public void doGet(HttpServletRequest request, HttpServletResponse response) 41 throws ServletException, IOException { 42 doPost(request, response); 43 } 44 45 /** 46 * The doPost method of the servlet. <br> 47 * 48 * This method is called when a form has its tag value method equals to post. 49 * 50 * @param request the request send by the client to the server 51 * @param response the response send by the server to the client 52 * @throws ServletException if an error occurred 53 * @throws IOException if an error occurred 54 */ 55 public void doPost(HttpServletRequest request, HttpServletResponse response) 56 throws ServletException, IOException { 57 response.setContentType("text/html;charset=utf-8"); 58 request.setCharacterEncoding("utf-8"); 59 response.setCharacterEncoding("utf-8"); 60 HttpSession session=request.getSession(); 61 session.invalidate(); 62 PrintWriter out = response.getWriter(); 63 out.print("退出成功，即将跳回登录页......"); 64 response.setHeader("refresh", "1;url=login.jsp"); 65 } 66 67 /** 68 * Initialization of the servlet. <br> 69 * 70 * @throws ServletException if an error occurs 71 */ 72 public void init() throws ServletException { 73 // Put your code here 74 } 75 76 } QuitServlet
1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 2 3 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 4 <html> 5 <head> 6 <title>登录</title> 7 </head> 8 <body> 9 <div align="center"> 10 <script type="text/javascript"> 11 function validate(){ 12 if(loginForm.uname.value == ""){ 13 alert("账号不能为空！"); 14 return; 15 } 16 if(loginForm.upwd.value == ""){ 17 alert("密码不能为空！"); 18 return; 19 } 20 loginForm.submit(); 21 } 22 </script> 23 <h1>请登录</h1> 24 <form action="dologin.do" name="loginForm" method="post"> 25 <table border="0" cellpadding="10"> 26 <tr><td>用户名：</td> 27 <td><input type="text" name="uname" value="zc"></td> 28 </tr> 29 <tr><td>密码：</td> 30 <td><input type="password" name="upwd"value="92"></td> 31 </tr> 32 <tr> 33 <td><input type="button" value="登录" onclick="validate()"></td> 34 <td><input type="button" value="注册" onclick="location.href='register.jsp'"></td> 35 </tr> 36 </table> 37 </form> 38 </div> 39 </body> 40 </html> login
1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 2 3 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 4 <html> 5 <head> 6 <title>注册</title> 7 </head> 8 <body> 9 <div align="center"> 10 <script type="text/javascript"> 11 function validate(){ 12 if(regForm.uname.value == ""){ 13 alert("账号不能为空！"); 14 return; 15 } 16 if(regForm.upwd.value == ""){ 17 alert("密码不能为空！"); 18 return; 19 } 20 regForm.submit(); 21 } 22 </script> 23 <form action="doregister.do" name="regForm" method="post"> 24 <table> 25 <tr> 26 <td>用户名：</td> 27 <td><input type="text" name="uname"></td> 28 </tr> 29 <tr> 30 <td>密码：</td> 31 <td><input type="password" name="upwd"></td> 32 </tr> 33 </table> 34 <input type="button" value="提交" onclick="validate()"> 35 <input type="reset" value="重置"> 36 </form> 37 </div> 38 </body> 39 </html> register
1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 2 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 3 <html> 4 <head> 5 <title>send</title> 6 </head> 7 <body> 8 <div align="center"> 9 <h3>编写你要发送的邮件</h3> 10 <h3><a href="main.jsp" >返回上一页</a></h3> 11 <form action="dosend.do" method="post"> 12 <table> 13 <tr> 14 <td>收件人：</td> 15 <td><input type="text" name="username" value="<%=request.getParameter("reply")%>"></td> 16 </tr> 17 <tr> 18 <td>标题：</td> 19 <td><input type="text" name="title"></td> 20 </tr> 21 <tr> 22 <td>内容：</td> 23 <td><textarea rows="6" cols="18" name="msgcontent"></textarea></td> 24 </tr> 25 </table> 26 <table> 27 <tr> 28 <td><input type="submit" value="提交"> </td> 29 <td> </td> 30 <td><input type="reset" value="重置"></td> 31 </tr> 32 </table> 33 </form> 34 </div> 35 </body> 36 </html> send
1 <%@page import="com.sk.entity.Msg"%> 2 <%@page import="com.sk.dao.MsgDao"%> 3 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 4 5 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 6 <html> 7 <head> 8 <title>首页</title> 9 </head> 10 <body> 11 <div align="center"> 12 <% 13 MsgDao md = new MsgDao(); 14 String uname = (String) session.getAttribute("uname"); 15 List<Msg> list = md.getMailByReceiver(uname); 16 %> 17 <h1>欢迎进入邮箱首页！<%=uname %></h1> 18 <a href="unread.jsp">未读邮件</a> 19 <a href="send.jsp">编写邮件</a> 20 <a href="doquit.do">退出登录</a> 21 <h3>收件箱</h3> 22 <table border="1"> 23 <tr> 24 <th>发件人</th> 25 <th>标题</th> 26 <th>状态</th> 27 <th>时间</th> 28 <th colspan="2">操作</th> 29 </tr> 30 <% 31 for (int i = 0; i < list.size(); i++) { 32 %> 33 <tr> 34 <td><%=list.get(i).getSendto()%></td> 35 <td><a href="detail.jsp?id=<%=list.get(i).getMsgid()%>"><%=list.get(i).getTitle()%></a></td> 36 <td> 37 <%if(list.get(i).getState() == 0){%> 38 <img src="image/weidu.png"> 39 <%}else{%> 40 <img src="image/yidu.png"> 41 <%}%> 42 </td> 43 <td><%=list.get(i).getMsg_create_date()%></td> 44 <td><a href="send.jsp?reply=<%=list.get(i).getSendto()%>">回复邮件</a></td> 45 <td><a href="dodel.do?id=<%=list.get(i).getMsgid()%>">删除邮件</a></td> 46 </tr> 47 <% 48 } 49 %> 50 </table> 51 </div> 52 </body> 53 </html> main
1 <%@page import="com.sk.entity.Msg"%> 2 <%@page import="com.sk.dao.MsgDao"%> 3 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 4 5 6 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 7 <html> 8 <head> 9 <title>邮件详情</title> 10 </head> 11 <body> 12 <div align="center"> 13 <% 14 int msgid = Integer.parseInt(request.getParameter("id")); 15 MsgDao md = new MsgDao(); 16 md.updateState(msgid); 17 Msg m = new Msg(); 18 m = md.details(msgid); 19 %> 20 <h3>邮件详情</h3> 21 <h3><a href="main.jsp">返回上一页</a></h3> 22 <table border="1"> 23 <tr> 24 <th>发件人</th> 25 <th>标题</th> 26 <th>时间</th> 27 <th>内容</th> 28 <th colspan="2">操作</th> 29 </tr> 30 <tr> 31 <td><%=m.getSendto()%></td> 32 <td><%=m.getTitle()%></td> 33 <td><%=m.getMsg_create_date()%></td> 34 <td><%=m.getMsgcontent()%></td> 35 <td><a href="send.jsp?reply=<%=m.getSendto()%>">回复邮件</a></td> 36 <td><a href="del.jsp?id=<%=m.getMsgid()%>">删除邮件</a></td> 37 </tr> 38 </table> 39 </div> 40 </body> 41 </html> detail
