第十一周作业
1.建库，建表2个
用户表（id,用户名，密码）
邮件表（id,发件人，收件人，标题，内容，发送时间，状态）
2.建model层
entity,dao包
3.登陆，注册，登陆后显示全部邮件
import javax.naming.NamingException; import javax.sql.DataSource; public class BaseDao { //获取连接 protected Connection getConnection(){ Connection conn=null; try { Class.forName("com.mysql.jdbc.Driver"); // 2.建立连接 conn = DriverManager.getConnection( "jdbc:mysql://localhost:3306/test", "root", "root"); } catch (Exception e) { e.printStackTrace(); } return conn; } //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) { e.printStackTrace(); } } }
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.List; import com.gd.entity.Msg; public class MsgDao extends BaseDao{ //插入邮件 //删除邮件 //按照接收者查询邮件all //修改邮件状态 public List<Msg> getMailByReceiver(String name){ List<Msg> list=new ArrayList<Msg>(); Connection conn=getConnection(); String sql="select * from msg where sendto=?"; PreparedStatement ps=null; ResultSet rs=null; try { ps = conn.prepareStatement(sql); ps.setString(1, name); rs=ps.executeQuery(); while(rs.next()){ Msg m=new Msg(); m.setMsgid(rs.getInt(1)); m.setUsername(rs.getString(2)); m.setTitle(rs.getString(3)); m.setMsgcontent(rs.getString(4)); m.setState(rs.getInt(5)); m.setSendto(rs.getString(6)); m.setMsg_create_date(rs.getDate(7)); list.add(m); } } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ closeAll(conn, ps, rs); } return list; } }
package com.gd.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 //用户登录 public boolean login(String name,String pwd){ boolean f=false; Connection conn=getConnection(); String sql="select * from users where uname=? and upwd=?"; PreparedStatement ps; try { ps = conn.prepareStatement(sql); ps.setString(1, name); ps.setString(2, pwd); ResultSet rs=ps.executeQuery(); if(rs.next()) f=true; closeAll(conn, ps, rs); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } return f; } //注册 }
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; } }
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 language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'denglu.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 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=denglu.jsp"); } %>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ page import="com.gd.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=denglu.jsp"); } %> </body> </html> }
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ page import="com.gd.entity.Msg"%> <%@ page import="com.gd.dao.MsgDao"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'main.jsp' starting page</title> </head> <% String uname = (String) session.getAttribute("uname"); %> 欢迎你<% out.print(uname); %>使用邮箱 <hr> <table border="2px solid black"> <tr> <td>id</td> <td>发件人</td> <td>标题</td> <td>内容</td> <td>已读未读状态</td> <td>收件人</td> <td>发送时间</td> </tr> <% MsgDao md = new MsgDao(); List<Msg> list = md.getMailByReceiver(uname); for (Msg m : list) { %> <tr> <td><%=m.getMsgid()%></td> <td><%=m.getUsername()%></td> <td><%=m.getTitle()%></td> <td><%=m.getMsgcontent()%></td> <td> <% int state = m.getState(); if (state == 1) { %> <img src="image/yidu.png"> <% ; } else { %> <img src="image/weidu.png"> <% ; } %> </td> <td><%=m.getSendto()%></td> <td><%=m.getMsg_create_date()%></td> </tr> <% } %> </table> </body> </html>
