第十二周jsp、作业

package com.gd.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();
        }
    }

}

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 {
    //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 sendto=?";
        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;
    }
    //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1(未读)，时间为系统当前时间)
        public void addMsg(Msg m){
            Connection conn=getConnection();
            String sql="insert into msg(username,title,msgcontent,state,sendto,msg_create_date) values(?,?,?,1,?,?)";
            PreparedStatement ps=null;
            try {
                 ps=conn.prepareStatement(sql);
                 ps.setString(1, m.getUsername());
                 ps.setString(2, m.getTitle());
                 ps.setString(3, m.getMsgcontent());
                 ps.setString(4, m.getSendto());
                 ps.setDate(5, new java.sql.Date(new Date().getTime()));
                 ps.executeUpdate();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }finally{
                closeAll(conn, ps, null);
            }
        }

        //根据id删除邮件
        public void delMsg(int id){
            Connection con=getConnection();
            String sql="delete from msg where msgid="+id;
            PreparedStatement ps=null;
            try {
                ps=con.prepareStatement(sql);
                ps.executeUpdate();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }finally{
                closeAll(con, ps, null);
            }
        }
        public void updateMsg(int id) {
            Connection con = getConnection();
            String sql = "update  msg set state='1' where msgid=?";
            PreparedStatement pred = null;
            try {
                pred = con.prepareStatement(sql);
                pred.setInt(1, id);
                pred.executeUpdate();
            } catch (SQLException e1) {
                e1.printStackTrace();
            } finally {
                closeAll(con, pred, null);
            }
        }

         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.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class UsersDao extends BaseDao {
    // 登陆
    public boolean login(String uname, String upwd) {
        boolean f = false;
        Connection conn = getConnection();
        String sql = "select * from users where uname=? and upwd=?";
        PreparedStatement ps = null;
        ResultSet rs = null;
        try {
            ps = conn.prepareStatement(sql);
            ps.setString(1, uname);// 第一个？赋值为name
            ps.setString(2, upwd);
            rs = ps.executeQuery();
            if (rs.next())// 查到结果了
                f = true;
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            closeAll(conn, ps, rs);
        }
        return f;
    }
    // 注册
    public int reg(String uname,String upwd){
        int i=-1;
        PreparedStatement pred=null;
        Connection con=getConnection();
        String sql="insert into users(uname,upwd)values(?,?)";
        try {
            pred= con.prepareStatement(sql);
            pred.setString(1, uname);
            pred.setString(2, upwd);
            i=pred.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        }finally{
            closeAll(con, pred, null);
        }
        return i;
    }
}

package com.gd.entity;

import java.util.Date;

public class Msg {
    private Integer msgid;
    private String username;
    private String title;
    private String msgcontent;
    private int state;
    private String sendto;
    private Date msg_create_date;

    public Msg() {
        super();
        // TODO Auto-generated constructor stub
    }

    public Msg(Integer 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 Integer getMsgid() {
        return msgid;
    }

    public void setMsgid(Integer 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 {
    private Integer id;
    private String uname;
    private String upwd;

    public Users() {
        super();
        // TODO Auto-generated constructor stub
    }

    public Users(Integer id, String uname, String upwd) {
        super();
        this.id = id;
        this.uname = uname;
        this.upwd = upwd;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer 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 'reg.jsp' starting page</title>
</head>

<body>
    <h1>注册</h1>
    <script>
        function yz() {
            if (form.uname.value == "") {
                alert('用户名不能为空');
                return;
            }
            if (form.upwd.value == "") {
                alert('密码不能为空');
                return;
            }
            form.submit();
        }
    </script>
    <form action="doreg.jsp" method="post" name="form">
        <table>
            <tr>
                <td>用户名</td>
                <td><input type="text" name="uname"></td>
            </tr>
            <tr>
                <td>密码</td>
                <td><input type="password" name="upwd" value="123456"></td>
            </tr>
            <tr>
                <td><input type="button" value="注册" onclick="yz()"></td>
                <td><a href="denglu.jsp">登录</a></td>
            </tr>
        </table>
    </form>
</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@page import="com.gd.dao.UsersDao"%>
<%
    request.setCharacterEncoding("utf-8");
    response.setCharacterEncoding("utf-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'doreg.jsp' starting page</title>
</head>
<body>
    <%
        String uname = request.getParameter("uname");
        String upwd = request.getParameter("upwd");
        UsersDao ud = new UsersDao();
        int i = ud.reg(uname, upwd);
        if (i > 0) {
            out.print("注册成功，即将跳到登录页.....");
            response.setHeader("refresh", "2;url=denglu.jsp");
        } else {
            out.print("注册失败，即将跳回注册页.....");
            response.setHeader("refresh", "2;url=reg.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 'denglu.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"><br> 密码: <input
            type="password" name="upwd" value="123456"><br> <input
            type="button" value="登录" onClick="validate()"> <a
            href="reg.jsp">立即注册</a>
    </form>
</body>
</html>

<%@ 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("登陆失败，即将跳回登陆页.....");
            response.setHeader("refresh", "5;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>
<body>
    <%
        MsgDao md = new MsgDao();
        String uname = (String) session.getAttribute("uname");
        List<Msg> list = md.getMailByReceiver(uname);
    %>
    欢迎你<%=uname%>
    <a href="write.jsp">写邮件</a>
    <a href="exit.jsp">退出登录</a>
    <table border="1">
        <tr>
            <td>发件人</td>
            <td>主题</td>
            <td>状态</td>
            <td>时间</td>
            <td>操作</td>
            <td>操作</td>
        </tr>

        <%
            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()%>">
            <%out.print(list.get(i).getTitle().toString());%>
            </a>
            </td>
            <td>
                <%
                    if (list.get(i).getState() == 1) {
                %> <img src="images/sms_unReaded.png" /> <%
     } else {
 %> <img src="images/sms_readed.png" /> <%
     }
 %>
            </td>
            <td><%=list.get(i).getMsg_create_date()%></td>
            <td><a href="write.jsp?reply=<%=list.get(i).getUsername()%>">回复</a>
            </td>
            <td><a href="del.jsp?id=<%=list.get(i).getMsgid()%>">删除</a>
            </td>
        </tr>
        <%
            }
        %>
    </table>

</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
    request.setCharacterEncoding("utf-8");
    response.setCharacterEncoding("utf-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<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="sendto" 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">
    </form>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@page import="com.gd.dao.UsersDao"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>My JSP 'dowrite.jsp' starting page</title>
  </head>
  <body>
   <%
    request.setCharacterEncoding("utf-8");

    String uname=(String)session.getAttribute("uname");// 发件人在session中获取
    String sendto=request.getParameter("sendto");
    String title=request.getParameter("title");
    String content=request.getParameter("content");

    Msg m=new Msg();
    m.setTitle(title);
    m.setMsgcontent(content);
    m.setUsername(uname);
    m.setSendto(sendto);

    MsgDao md=new MsgDao();
    md.addMsg(m);

    out.print("发送成功，即将跳回首页.....");
    response.setHeader("refresh", "3;url=main.jsp");
 %>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@page import="com.gd.entity.Msg"%>
<%
    request.setCharacterEncoding("utf-8");
    response.setCharacterEncoding("utf-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<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.updateMsg(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>
    <a href="main.jsp">返回</a>
</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@page import="com.gd.dao.UsersDao"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>My JSP 'del.jsp' starting page</title>
  </head>
  <body>
    <%
    request.setCharacterEncoding("utf-8");
    int id=Integer.parseInt(request.getParameter("id"));
    MsgDao md=new MsgDao();
    md.delMsg(id);
    out.print("删除成功、、、、、、、");
    response.sendRedirect("main.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 'exit.jsp' starting page</title>
</head>

<body>
    <%
        session.invalidate();
        response.sendRedirect("reg.jsp");
    %>
</body>
</html>