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
BsaeDao
package com.yxf.dao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import javax.naming.Context;
import javax.naming.InitialContext;
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();
}
}
}
MsgDao
package com.yxf.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.yxf.entity.Msg;
public class MsgDao extends BaseDao{
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.setState(rs.getInt("state"));
m.setMsgcontent(rs.getString("msgcontent"));
m.setSendto(rs.getString("sendto"));
m.setMsg_create_date(rs.getDate("mgs_create_date"));
list.add(m);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
closeAll(con, ps, rs);
}
return list;
}
}
UsersDao
package com.yxf.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class UsersDao extends BaseDao{
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;
}
public int reg(String uname, String upwd) {
Connection conn = getConnection();
int i=0;
PreparedStatement ps = null;
try {
String sql = "insert into users(uname,upwd) values(?,?)";
ps = conn.prepareStatement(sql);
ps.setString(1, uname);
ps.setString(2, upwd);
i=ps.executeUpdate();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
closeAll(conn, ps, null);
}
return i;
}
}
Msg
package com.yxf.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;
private 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;
}
}
Users
package com.yxf.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;
}
}
denglu
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>My JSP 'index.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">
<input type="button" value="登录" onClick="validate()">
<a href="resgit.jsp">注册</a>
</form>
</body>
</html>
login
<%@page import="com.yxf.dao.MsgDao"%>
<%@page import="com.yxf.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();
MsgDao md=new MsgDao();
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");
}
%>
resgit
<%@ page language="java" contentType="text/html; charset=Utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<script type="text/javascript">
function validate(){
if(resForm.uname.value==""){
alert("账号不能为空!");
return;
}
if(resForm.upwd.value==""){
alert("密码不能为空!");
return;
}
resForm.submit();
}
</script>
<form name="resForm" action="doresgit.jsp" method="post">
<b>用户名</b>
<input type="text" name="uname" />
<br />
<b>密码</b>
<input type="text" name="upwd" />
<br />
<input type="button" value="注册" onClick="validate()">
<a href="denglu.jsp">登录</a>
</form>
</body>
</html>
doresgit
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@page import="com.yxf.dao.MsgDao"%>
<%@page import="com.yxf.dao.UsersDao"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</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.reg(uname, upwd)>0){
session.setAttribute("uname", uname);
request.getRequestDispatcher("denglu.jsp").forward(request, response);
}else{
out.print("登陆失败，即将跳回登陆页.....");
response.setHeader("refresh", "5;url=shibai.jsp");
}
%>
</body>
</html>
main
<%@page import="com.yxf.entity.Msg"%>
<%@page import="com.yxf.dao.MsgDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>My JSP 'index.jsp' main page</title>
</head>
<body>
<%
String uname=(String)session.getAttribute("uname");
%>
欢迎你 <% out.print(uname); %>
<table height="20px" width="100%" align="center" border="1">
<tr>
<td>发件人</td>
<td>主题</td>
<td>状态</td>
<td>时间</td>
</tr>
<%
MsgDao md=new MsgDao();
List<Msg> list=md.getMailByReceiver(uname);
for(Msg m:list)
{%>
<tr>
<td><%=m.getUsername() %></td>
<td><%=m.getTitle() %></td>
<td><%
int state=m.getState();
if(state==1){ %>
<img src ="image/已读消息.png" />
<%;
}else{%>
<img src ="image/未读.png" />
<%;
}
%></td>
<td><%=m.getMsg_create_date() %></td>
</tr>
<%}
%>
</table>
</body>
</html>
浙公网安备 33010602011771号