jsp第十二周作业
1.实现 删除 回复邮件
2.实现阅读邮件功能:在main.jsp中点击任意邮件的标题,进入到detail.jsp显示邮件详情,包括发件人,主题,内容,时间。同时需要把邮件状态修改为已读。
package com.yxt.Dao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class BaseDao {
// 获取连接
protected Connection getConnection() {
Connection con = null;
try {
Class.forName("com.mysql.jdbc.Driver");
// 建立连接
con = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/test", "root", "123456");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return con;
}
// 关闭连接
protected void closeAll(Connection con, PreparedStatement ps, ResultSet rs) {
try {
if (rs != null)
rs.close();
if (ps != null)
ps.close();
if (con != null)
con.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
package com.yxt.Dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.Date; import java.util.List; import com.yxt.entity.Msg; public class MsgDao extends BaseDao { // 1,插入邮件 public void addMsg(Msg m) { Connection con = getConnection(); String sql = "insert into msg(username,title,msgcontent,state,sendto,msg_create_date) values(?,?,?,?,?,?)"; PreparedStatement ps = null; try { ps = con.prepareStatement(sql); ps.setString(1, m.getUsername()); ps.setString(2, m.getTitle()); ps.setString(3, m.getMsgcontent()); ps.setInt(4, 1); ps.setString(5, m.getSendto()); ps.setDate(6, new java.sql.Date(new Date().getTime()));// 系统当前时间 ps.executeUpdate(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { closeAll(con, ps, null); } } // 2.删除邮件 public void delMail(int id) { Connection conn = getConnection(); String sql = "delete from msg where msgid=?"; PreparedStatement ps = null; try { ps = conn.prepareStatement(sql); ps.setInt(1, id); ps.executeUpdate(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ closeAll(conn, ps, null); } } //(测试删除邮件的代码是否编写成功) // public static void main(String[] args) { // MsgDao md=new MsgDao(); // md.delMail(3); //} // 3.修改邮件状态 public void update(int id) { Connection con = getConnection(); String sql = "update msg set state='1' where msgid=?"; PreparedStatement ps = null; try { ps = con.prepareStatement(sql); ps.setInt(1, id); ps.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } finally { closeAll(con, ps, null); } } // 4.按照接收者查询全部邮件 public List<Msg> getMailByReceiver(String name) { List<Msg> list = new ArrayList<Msg>(); Connection con = getConnection(); String sql = "select * from msg where sendto=?"; PreparedStatement ps=null; ResultSet rs=null; try { ps = con.prepareStatement(sql); ps.setString(1, name); rs = ps.executeQuery(); while (rs.next()) { Msg m = new Msg(); m.setMsgid(rs.getInt("msgid")); m.setUsername(rs.getString("username")); m.setTitle(rs.getString("title")); m.setMsgcontent(rs.getString("msgcontent")); m.setState(rs.getInt("state")); m.setSendto(rs.getString("sendto")); m.setMsg_create_date(rs.getDate("msg_create_date")); list.add(m); } } catch (SQLException e) { e.printStackTrace(); }finally{ closeAll(con, ps, rs); } return list; } //5.实现阅读邮件功能 public Msg read(int id) { Connection con = getConnection(); String sql = "select msgid,username,sendto,title,msgcontent,msg_create_date from msg where msgid=?"; PreparedStatement ps = null; ResultSet rs = null; try { ps = con.prepareStatement(sql); ps.setInt(1, id); rs = ps.executeQuery(); while (rs.next()) { Msg m = new Msg(); m.setMsgid(rs.getInt("msgid")); m.setUsername(rs.getString("username")); m.setTitle(rs.getString("title")); m.setMsgcontent(rs.getString("msgcontent")); m.setSendto(rs.getString("sendto")); m.setMsg_create_date(rs.getDate("msg_create_date")); return m; } } catch (SQLException e) { e.printStackTrace(); } finally { closeAll(con, ps, rs); } return null; } }
package com.yxt.Dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class UsersDao extends BaseDao {
// 关于用户的增删改查
// 1.登录
public boolean login(String uname, String upwd) {
boolean f = false;
Connection con = getConnection();
String sql = "select * from users where uname=? and upwd=?";
PreparedStatement ps = null;
ResultSet rs = null;
try {
ps = con.prepareStatement(sql);
ps.setString(1, uname);
ps.setString(2, upwd);
rs = ps.executeQuery();
if (rs.next())
f = true;
} catch (SQLException e) {
e.printStackTrace();
} finally {
closeAll(con, ps, rs);
}
return f;
}
// 2.注册
public int register(String uname, String upwd) {
Connection con = getConnection();
PreparedStatement ps = null;
int x = 0;
try {
String sql = "insert into users(uname,upwd) values(?,?)";
ps = con.prepareStatement(sql);
ps.setString(1, uname);
ps.setString(2, upwd);
x = ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
} finally {
closeAll(con, ps, null);
}
return x;
}
}
package com.yxt.entity;
import java.util.Date;
public class Msg {
private int msgid;
private String username;
private String title;
private String msgcontent;
private int state;
private String sendto;
Date msg_create_date;
public int getMsgid() {
return msgid;
}
public void setMsgid(int msgid) {
this.msgid = msgid;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getMsgcontent() {
return msgcontent;
}
public void setMsgcontent(String msgcontent) {
this.msgcontent = msgcontent;
}
public int getState() {
return state;
}
public void setState(int state) {
this.state = state;
}
public String getSendto() {
return sendto;
}
public void setSendto(String sendto) {
this.sendto = sendto;
}
public Date getMsg_create_date() {
return msg_create_date;
}
public void setMsg_create_date(Date msg_create_date) {
this.msg_create_date = msg_create_date;
}
public Msg(int msgid, String username, String title, String msgcontent,
int state, String sendto, Date msg_create_date) {
super();
this.msgid = msgid;
this.username = username;
this.title = title;
this.msgcontent = msgcontent;
this.state = state;
this.sendto = sendto;
this.msg_create_date = msg_create_date;
}
public Msg() {
super();
}
@Override
public String toString() {
return "Msg [msgid=" + msgid + ", username=" + username + ", sendto=" + sendto + ", title="
+ title + ", msg_create_date=" + msg_create_date + ", state=" + state + ", msgcontent="
+ msgcontent + "]";
}
}
package com.yxt.entity;
public class Users {
private int id;
private String uname;
private String upwd;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
public String getUpwd() {
return upwd;
}
public void setUpwd(String upwd) {
this.upwd = upwd;
}
}
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'reg.jsp' starting page</title> </head> <body> <script type="text/javascript"> function validate() { if (registerForm.uname.value == "") { alert("账号不能为空!"); return; } if (registerForm.upwd.value == "") { alert("密码不能为空!"); return; } registerForm.submit(); } </script> <form name="registerForm" action="doreg.jsp" method="post"> 用户名:<input type="text" name="uname"><br> 密 码: <input type="password" name="upwd"><br> <input type="submit" value="注册"><hr> </form><hr> <a href="login.jsp">返回登录</a> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ page import="com.yxt.Dao.UsersDao"%> <%@ page import="com.yxt.Dao.MsgDao"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'doreg.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); UsersDao ud = new UsersDao(); MsgDao md = new MsgDao(); if (ud.register(uname, upwd) > 0) { session.setAttribute("uname", uname); request.getRequestDispatcher("login.jsp").forward(request, response); } else { out.print("注册失败,请重新注册......."); response.setHeader("refresh", "3;url=reg.jsp"); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'login.jsp' starting page</title> </head> <body> <script type="text/javascript"> function validate() { if (loginForm.uname.value == "") { alert("账号不能为空!"); return; } if (loginForm.upwd.value == "") { alert("密码不能为空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="dologin.jsp" method="post"> 用户名:<input type="text" name="uname" ><br> 密 码:<input type="password" name="upwd" ><br> <input type="button" value="登录" onClick="validate()"> </form> <hr> <a href="reg.jsp">返回注册</a> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ page import="com.yxt.Dao.UsersDao"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'dologin.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); UsersDao ud = new UsersDao(); if (ud.login(uname, upwd)) { session.setAttribute("uname",uname); request.getRequestDispatcher("main.jsp").forward( request,response); } else { out.print("登录失败,即将跳回登录页......"); response.setHeader("refresh", "3;url=login.jsp"); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'write.jsp' starting page</title> </head> <body> <form action="dowrite.jsp" method="post"> 收件人:<input type="text" name="receiver" value="<%=request.getParameter("reply")%>"><br> 主题: <input type="text" name="title"><br> 内容 <textarea rows="6" cols="20" name="content"></textarea> <br> <input type="submit" value="发送"> <br> <a href="main.jsp">返回</a> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ page import="com.yxt.entity.Msg"%> <%@ page import="com.yxt.Dao.MsgDao"%> <%@ page import="com.yxt.Dao.UsersDao"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'dowrite.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = (String) session.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); out.print("发送成功....."); response.setHeader("refresh", "3;url=main.jsp"); %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ page import="com.yxt.entity.Msg"%> <%@ page import="com.yxt.Dao.MsgDao"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'main.jsp' starting page</title> </head> <body> <% String uname = (String) session.getAttribute("uname"); %> 欢迎你<% out.print(uname); %>使用邮箱 <hr> <a href="write.jsp">写邮件</a> <table border="1"> <tr> <td>发件人</td> <td>标题</td> <td>状态</td> <td>时间</td> <td>操作</td> <td>操作</td> <% MsgDao md = new MsgDao(); List<Msg> list = md.getMailByReceiver(uname); for (int i = 0; i < list.size(); i++) { %> <tr> <td><%=list.get(i).getUsername()%></td> <td><a href="detail.jsp?id=<%=list.get(i).getMsgid()%>"><%=list.get(i).getMsgcontent() %></a> </td> <td> <% if (list.get(i).getState() == 1) { %> <img src="image/no.png"/> <% } else { %><img src="image/yes.png"/> <% } %> </td> <td><%=list.get(i).getMsg_create_date()%></td> <td><a href="delete.jsp?id=<%=list.get(i).getMsgid()%>">删除</a> </td> <td><a href="write.jsp?reply=<%=list.get(i).getUsername()%>">回复</a> </td> </tr> <% } %> </table> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ page import="com.yxt.entity.Msg"%> <%@ page import="com.yxt.Dao.MsgDao"%> <%@ page import="com.yxt.Dao.UsersDao"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'delete.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); int id = Integer.parseInt(request.getParameter("id")); MsgDao md = new MsgDao(); md.delMail(id); out.print("刪除成功......"); response.setHeader("refresh", "3;url=main.jsp"); //response.sendRedirect("main.jsp"); %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ page import="com.yxt.entity.Msg"%> <%@ page import="com.yxt.Dao.MsgDao"%> <%@ page import="com.yxt.Dao.UsersDao"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'detail.jsp' starting page</title> </head> <body> <body> <% request.setCharacterEncoding("utf-8"); String msgid = request.getParameter("id"); int idd = Integer.parseInt(msgid); MsgDao md = new MsgDao(); md.update(idd); Msg m =md.read(idd); %> <table> <tr> <td>发件人:</td> <td><input type="text" name="username" style="border: none" value="<%=m.getUsername()%>"> </td> </tr> <tr> <td>主题:</td> <td><input type="text" name="title" style="border: none" value="<%=m.getTitle()%>"> </td> </tr> <tr> <td>时间:</td> <td><input type="text" name="msg_create_date" style="border: none" value="<%=m.getMsg_create_date()%>"> </td> </tr> <tr> <td>收件人:</td> <td><input type="text" name="sendto" style="border: none" value="<%=m.getSendto()%>"> </td> </tr> <tr> <td>内容:</td> <td><div style="border: none;outline: none;overflow: inherit;"> <%=m.getMsgcontent()%></div> </td> </tr> </table> <br> <a href="main.jsp">返回</a> </body> </body> </html>