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)

  BaseDao:

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package com.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 conn=null;
        try {
            Class.forName("com.mysql.jdbc.Driver");
            // 2.建立连接
            conn = DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/test", "root", "123456");
        } 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:

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package com.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 entity.Msg;
 
public class MsgDao extends BaseDao{
    //关于邮件的增删改查   
    //添加邮件(写邮件,回复邮件都调用,邮件状态为0,时间为系统当前时间)
     
     
    //根据id删除邮件
     
     
    //根据id修改邮件状态(统一改成1)
     
     
    //根据收件人查看全部邮件
    public List<Msg> getMailByReceiver(String name){
        List<Msg> list=new ArrayList<Msg>();
        Connection con=getConnection();
        String sql="select * from msg where username=?";
        PreparedStatement ps=null;
        ResultSet rs=null;
        try {
            ps = con.prepareStatement(sql);
            ps.setString(1, name);
             rs=ps.executeQuery();
            while(rs.next()){
                //每读取一行,创建一个msg对象,对象放到集合中
                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(con, ps, rs);
        }       
        return list;
    }
     
     
    

UsersDao:

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package com.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,用到什么功能鞋什么
     
    //登陆
    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);//第一个?赋值为name
            ps.setString(2, pwd);
            ResultSet rs=ps.executeQuery();
            if(rs.next())//查到结果了
                f=true;
            closeAll(conn, ps, rs);
             
             
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }       
        return f;
    }   
     
    //注册
    public int logon(String uname, int upwd) {
        Connection conn = getConnection();
        PreparedStatement ps = null;
        int r = -1;
        try {
            String sql = "insert into users(uname,upwd) values(?,?)"; // 2个占位符
            // 4.执行SQL语句
            ps = conn.prepareStatement(sql);
            ps.setString(1, uname);
            ps.setInt(2, upwd);
            r = ps.executeUpdate();// 增删改都用这个
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            closeAll(conn, ps, null);
        }
        return r;
 
    }
     
     
 

Msg.java:

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package com.dao;
 
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;
    @Override
    public String toString() {
        return "Msg [msgid=" + msgid + ", username=" + username + ", title="
                + title + ", msgcontent=" + msgcontent + ", state=" + state
                + ", sendto=" + sendto + ", msg_create_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:

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package com.dao;
 
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;
    }
 
}<br> 

login.jsp:

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<html>
<head>
 
<title>My JSP 'student.jsp' starting page</title>
 
</head>
<%
     
%>
<body>
    <form action="login_link.jsp">
        姓名:<input type="text" name="name" /> <br>密码:<input type="password"
          name="pwd" /> <br><input type="submit" value="登录" />
    </form>
    <form action="logon.jsp">
        <input type="submit" value="注册" />
    </form>
</body>
</html>

link.jsp:

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<html>
<head>
 
<title></title>
 
</head>
<%@ page import="dao.UsersDao"%>
<%
    String name = request.getParameter("name");
    String pwd = request.getParameter("pwd");
    String uname = new String(name.getBytes("ISO-8859-1"), "utf-8");
    try {
        UsersDao usersdao = new UsersDao();
        if (usersdao.login(uname, pwd)) {
            String n = (String) session.getAttribute("uname");
            if (n == null) {
                session.setAttribute("uname", name);
            }
            request.getRequestDispatcher("mail.jsp").forward(request,
                    response);
 
        } else {
            out.println("登陆失败!");
            out.println("3s后跳转到登录页面...");
            response.setHeader("refresh", "3;url=login.jsp");
        }
    } catch (Exception e) {
        out.println("异常!!");
        out.println("3s后跳转到登录页面...");
        response.setHeader("refresh", "3;url=login.jsp");
    }
%>
<body>
    <a href="login.jsp">返回</a>
</body>
</html>

logon.jsp: 

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<html>
<head>
 
<title></title>
 
</head>
<%
     
%>
<body>
    <h3>请输入信息来完成注册...</h3>
    <form action="logon_link.jsp">
        用户名:<input type="text" name="name" /> 密码:<input type="password"
            name="pwd" /> <input type="submit" value="注册" />
    </form>
    <a href="login.jsp">返回</a>
</body>
</html>

link:

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<html>
<head>
 
<title>My JSP 'slogon_link.jsp' starting page</title>
 
</head>
<%@ page import="dao.UsersDao"%>
<%
    String name = request.getParameter("name");
    String upwd = request.getParameter("pwd");
    String uname=new String(name.getBytes("ISO-8859-1"),"utf-8");
    int pwd = Integer.parseInt(upwd);
    UsersDao usersdao=new UsersDao();
    if (usersdao.logon(uname, pwd) != -1) {
        out.println("注册成功!");
        out.println("三秒后跳转到登录页...");
        response.setHeader("refresh", "3;url=login.jsp");
    } else {
        out.println("注册失败!");
        out.println("三秒后跳转到登录页...");
        response.setHeader("refresh", "3;url=login.jsp");
    }
%>
<body>
</body>
</html>

mail.jsp:

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<html>
<head>
 
<title></title>
<%@ page import="dao.MsgDao"%>
<%@ page import="entity.Msg"%>
<style type="text/css">
table {
    border: 2px black solid;
    width: 550px;
}
</style>
</head>
 
<body>
 
    <%
        String name = (String) session.getAttribute("uname");
        String uname = new String(name.getBytes("ISO-8859-1"), "utf-8");
    %>
    <%
        out.println(uname);
    %>的邮箱:
    <br>
    <%
        MsgDao m = new MsgDao();
        List<Msg> list = m.getMailByReceiver(uname);
    %>
    <table>
        <tr>
            <td>发件人</td>
            <td>主题</td>
            <td>状态</td>
            <td>时间</td>
        </tr>
        <%
            for (int i = 0; i < list.size(); i++) {
        %>
        <tr>
            <td><%=list.get(i).getUsername()%></td>
            <td><%=list.get(i).getTitle()%></td>
            <td>
                <%
                    if (list.get(i).getState() == 0) {
                %><img src="image/weidu.png" /> <%
     } else {
 %> <img src="image/yidu.png" /> <%
     }
 %>
            </td>
            <td><%=list.get(i).getMsg_create_date()%></td>
            <%
                }
            %>
         
    </table>
</body>
</html>

  

 

 

 

 

 

 

 

 

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)

  BaseDao:

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package com.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 conn=null;
        try {
            Class.forName("com.mysql.jdbc.Driver");
            // 2.建立连接
            conn = DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/test", "root", "123456");
        } 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:

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package com.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 entity.Msg;
 
public class MsgDao extends BaseDao{
    //关于邮件的增删改查   
    //添加邮件(写邮件,回复邮件都调用,邮件状态为0,时间为系统当前时间)
     
     
    //根据id删除邮件
     
     
    //根据id修改邮件状态(统一改成1)
     
     
    //根据收件人查看全部邮件
    public List<Msg> getMailByReceiver(String name){
        List<Msg> list=new ArrayList<Msg>();
        Connection con=getConnection();
        String sql="select * from msg where username=?";
        PreparedStatement ps=null;
        ResultSet rs=null;
        try {
            ps = con.prepareStatement(sql);
            ps.setString(1, name);
             rs=ps.executeQuery();
            while(rs.next()){
                //每读取一行,创建一个msg对象,对象放到集合中
                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(con, ps, rs);
        }       
        return list;
    }
     
     
    

UsersDao:

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package com.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,用到什么功能鞋什么
     
    //登陆
    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);//第一个?赋值为name
            ps.setString(2, pwd);
            ResultSet rs=ps.executeQuery();
            if(rs.next())//查到结果了
                f=true;
            closeAll(conn, ps, rs);
             
             
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }       
        return f;
    }   
     
    //注册
    public int logon(String uname, int upwd) {
        Connection conn = getConnection();
        PreparedStatement ps = null;
        int r = -1;
        try {
            String sql = "insert into users(uname,upwd) values(?,?)"; // 2个占位符
            // 4.执行SQL语句
            ps = conn.prepareStatement(sql);
            ps.setString(1, uname);
            ps.setInt(2, upwd);
            r = ps.executeUpdate();// 增删改都用这个
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            closeAll(conn, ps, null);
        }
        return r;
 
    }
     
     
 

Msg.java:

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package com.dao;
 
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;
    @Override
    public String toString() {
        return "Msg [msgid=" + msgid + ", username=" + username + ", title="
                + title + ", msgcontent=" + msgcontent + ", state=" + state
                + ", sendto=" + sendto + ", msg_create_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:

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package com.dao;
 
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;
    }
 
}<br> 

login.jsp:

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<html>
<head>
 
<title>My JSP 'student.jsp' starting page</title>
 
</head>
<%
     
%>
<body>
    <form action="login_link.jsp">
        姓名:<input type="text" name="name" /> <br>密码:<input type="password"
          name="pwd" /> <br><input type="submit" value="登录" />
    </form>
    <form action="logon.jsp">
        <input type="submit" value="注册" />
    </form>
</body>
</html>

link.jsp:

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<html>
<head>
 
<title></title>
 
</head>
<%@ page import="dao.UsersDao"%>
<%
    String name = request.getParameter("name");
    String pwd = request.getParameter("pwd");
    String uname = new String(name.getBytes("ISO-8859-1"), "utf-8");
    try {
        UsersDao usersdao = new UsersDao();
        if (usersdao.login(uname, pwd)) {
            String n = (String) session.getAttribute("uname");
            if (n == null) {
                session.setAttribute("uname", name);
            }
            request.getRequestDispatcher("mail.jsp").forward(request,
                    response);
 
        } else {
            out.println("登陆失败!");
            out.println("3s后跳转到登录页面...");
            response.setHeader("refresh", "3;url=login.jsp");
        }
    } catch (Exception e) {
        out.println("异常!!");
        out.println("3s后跳转到登录页面...");
        response.setHeader("refresh", "3;url=login.jsp");
    }
%>
<body>
    <a href="login.jsp">返回</a>
</body>
</html>

logon.jsp: 

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<html>
<head>
 
<title></title>
 
</head>
<%
     
%>
<body>
    <h3>请输入信息来完成注册...</h3>
    <form action="logon_link.jsp">
        用户名:<input type="text" name="name" /> 密码:<input type="password"
            name="pwd" /> <input type="submit" value="注册" />
    </form>
    <a href="login.jsp">返回</a>
</body>
</html>

link:

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<html>
<head>
 
<title>My JSP 'slogon_link.jsp' starting page</title>
 
</head>
<%@ page import="dao.UsersDao"%>
<%
    String name = request.getParameter("name");
    String upwd = request.getParameter("pwd");
    String uname=new String(name.getBytes("ISO-8859-1"),"utf-8");
    int pwd = Integer.parseInt(upwd);
    UsersDao usersdao=new UsersDao();
    if (usersdao.logon(uname, pwd) != -1) {
        out.println("注册成功!");
        out.println("三秒后跳转到登录页...");
        response.setHeader("refresh", "3;url=login.jsp");
    } else {
        out.println("注册失败!");
        out.println("三秒后跳转到登录页...");
        response.setHeader("refresh", "3;url=login.jsp");
    }
%>
<body>
</body>
</html>

mail.jsp:

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<html>
<head>
 
<title></title>
<%@ page import="dao.MsgDao"%>
<%@ page import="entity.Msg"%>
<style type="text/css">
table {
    border: 2px black solid;
    width: 550px;
}
</style>
</head>
 
<body>
 
    <%
        String name = (String) session.getAttribute("uname");
        String uname = new String(name.getBytes("ISO-8859-1"), "utf-8");
    %>
    <%
        out.println(uname);
    %>的邮箱:
    <br>
    <%
        MsgDao m = new MsgDao();
        List<Msg> list = m.getMailByReceiver(uname);
    %>
    <table>
        <tr>
            <td>发件人</td>
            <td>主题</td>
            <td>状态</td>
            <td>时间</td>
        </tr>
        <%
            for (int i = 0; i < list.size(); i++) {
        %>
        <tr>
            <td><%=list.get(i).getUsername()%></td>
            <td><%=list.get(i).getTitle()%></td>
            <td>
                <%
                    if (list.get(i).getState() == 0) {
                %><img src="image/weidu.png" /> <%
     } else {
 %> <img src="image/yidu.png" /> <%
     }
 %>
            </td>
            <td><%=list.get(i).getMsg_create_date()%></td>
            <%
                }
            %>
         
    </table>
</body>
</html>

  

 

 

 

 

 

 

 

 

posted @ 2022-07-03 22:04  欧阳晨  阅读(6)  评论(0编辑  收藏  举报