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.gd.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.gd.entity.Msg; public class MsgDao extends BaseDao{ 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.gd.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.gd.entity; public class Users { int id; String uname; 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 import="com.gd.dao.UsersDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% 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("登陆失败，即将跳回登陆页....."); response.setHeader("refresh", "5;url=Login.jsp"); } %>
<%@page import="com.gd.dao.MsgDao"%> <%@page import="com.gd.entity.Msg"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>My JSP 'main' 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/unread.png"/> <% } else { %><img src="image/read.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 import="com.gd.dao.MsgDao"%> <%@page import="com.gd.entity.Msg"%> <%@page import="com.gd.dao.UsersDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.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", "2;url=main.jsp"); //response.sendRedirect("main.jsp"); %> </body> </html>
<%@ page import="com.gd.entity.Msg"%> <%@ page import="com.gd.dao.MsgDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <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"%> <html> <head> <title>My JSP 'Login.jsp' starting page</title> </head> <body> <h1>登录</h1> <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" value="admin"><br> 密码: <input type="password" name="upwd" value="admin"> <input type="button" value="登录" onClick="validate()"> </form> </body> </html>
<%@page import="com.gd.dao.MsgDao"%> <%@page import="com.gd.entity.Msg"%> <%@page import="com.gd.dao.UsersDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>My JSP 'detail.jsp' starting page</title> </head> <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> </html>
