jsp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
5个页面 login,dologin,reg,doreg,main
package com.wzh;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class Base {
// 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.wzh; 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.qxj.entity.Msg; public class MsgDao extends BaseDao{ // 1,插入邮件 // 2.删除邮件 // 3.修改邮件状态 // 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(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) { e.printStackTrace(); }finally{ closeAll(con, ps, rs); } return list; } }
package com.wzh; 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.qxj.entity.Msg; public class MsgDao extends BaseDao{ // 1,插入邮件 // 2.删除邮件 // 3.修改邮件状态 // 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(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) { e.printStackTrace(); }finally{ closeAll(con, ps, rs); } return list; } }
package com.wzh;
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.wzh;
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.wzh.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 '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.wzh.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 '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.wzh.UsersDao"%> <%@ page import="com.wzh.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"%> <%@ page import="com.wzh.entity.Msg"%> <%@ page import="com.wzh.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> <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/yes.png"> <% ; } else { %> <img src="image/no.png"> <% ; } %> </td> <td><%=m.getSendto()%></td> <td><%=m.getMsg_create_date()%></td> </tr> <% } %> </table> </body> </html>