第十一周作业

 

 

package aa;
    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", "123456", "cai123");
                } 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 aa;
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 aa;
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 aa.Msg;
    public class MsgDao extends BaseDao{    
        //插入邮件
        
        //删除邮件
        
        //修改邮件状态
        
        //按照接收者查询全部邮件
        public List<Msg> getMailByReceiver(String name){
            List<Msg> list=new ArrayList<Msg>();
            Connection conn=getConnection();
            String sql="select * from msg where sendto=?";
            PreparedStatement ps;
            ResultSet rs;
            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);
                }
                
                closeAll(conn, ps, rs);
                
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }        
            return list;
        }
        
         
}

package aa;

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;
    }

}

package aa;

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
    //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);
            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
    public int register(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){
            e.printStackTrace();
        }finally{
            closeAll(conn,ps,null);
        }
        return i;        
    }

}

<%@ 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="zz.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="MyJsp.jsp">注册</a>


    </form>


</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@page import="aa.UsersDao"%>
<%@page import="aa.MsgDao"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
    <title>My JSP 'z.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("dengli.jsp").forward(request,response);
    
    }else{
    out.print("注册失败");
    response.setHeader("refresh","5;url=MyJsp.jsp");
    }
 %>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>My JSP 'MyJsp.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="z.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">
        <a href="denglu.jsp">登录</a>
    </form>
  </body>
</html>

<%@page import="aa.UsersDao"%>
<%@page import="aa.MsgDao"%>
<%@ 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=dengli.jsp");
    }
%>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@page import="aa.MsgDao"%>
<%@page import="aa.Msg"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!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);
    %>
    <table border="1px 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="images/yidu.png"> <%
     ;
         } else {
 %> <img src="images/weidu.png"> <%
     ;
         }
 %>
            </td>
            <td><%=m.getSendto() %></td>
            <td><%=m.getMsg_create_date()%></td>
        </tr>
        <%
            }
        %>
    </table>
  </body>
</html>