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

package myh;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
  
public class BaseDao {
    public Connection getConnection() {
        Connection con = null;
        try {
            Class.forName("com.mysql.jdbc.Driver");
            con=DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","990511");
        } catch (Exception e) {
            System.out.println("连接失败");
            e.printStackTrace();
        }
        return con;
    }
      
    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 myh;
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 glg2.Email;
  
public class EmailDao extends BaseDao{
    public List<Email> getAll(String name){
        List<Email>list=new ArrayList<Email>();
        Connection con=getConnection();
        PreparedStatement pred=null;
        ResultSet resultSet=null;
        String sql="select * from email where addressee=?";
        try {
            pred=con.prepareStatement(sql);
            pred.setString(1, name);
            resultSet=pred.executeQuery();
            while(resultSet.next()){
                Email email=new Email();
                email.setId(resultSet.getInt(1));
                email.setAddresser(resultSet.getString(2));
                email.setAddressee(resultSet.getString(3));
                email.setHead(resultSet.getString(4));
                email.setContent(resultSet.getString(5));
                email.setTime(resultSet.getDate(6));
                email.setState(resultSet.getInt(7));
                list.add(email);
            }
        } catch (SQLException e) {
              
            e.printStackTrace();
        }
        return list;
    }
  
}

     package myh;
    import java.util.Date;
  
    public class Email {
    private Integer id;
    private String addresser;
    private String addressee;
    private String head;
    private Date time;
    private Integer state;
    private String content;
      
      
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getAddresser() {
        return addresser;
    }
    public void setAddresser(String addresser) {
        this.addresser = addresser;
    }
    public String getAddressee() {
        return addressee;
    }
    public void setAddressee(String addressee) {
        this.addressee = addressee;
    }
    public String getHead() {
        return head;
    }
    public void setHead(String head) {
        this.head = head;
    }
    public Date getTime() {
        return time;
    }
    public void setTime(Date time) {
        this.time = time;
    }
    public Integer getState() {
        return state;
    }
    public void setState(Integer state) {
        this.state = state;
    }
    public String getContent() {
        return content;
    }
    public void setContent(String content) {
        this.content = content;
    }
    public Email() {
        super();
    }
    public Email(Integer id, String addresser, String addressee, String head, Date time,
            Integer state, String content) {
        super();
        this.id = id;
        this.addresser = addresser;
        this.addressee = addressee;
        this.head = head;
        this.time = time;
        this.state = state;
        this.content = content;
    }
      
  
}

package myh2;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
  
public class UserDao extends BaseDao{
    public int Register(String name,String pwd){
        int i=-1;
        PreparedStatement pred=null;
        Connection con=getConnection();
        String sql="insert into name(name,pwd)values(?,?)";
        try {
            pred= con.prepareStatement(sql);
            pred.setString(1, name);
            pred.setString(2, pwd);
            i=pred.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        }finally{
            closeAll(con, pred, null);
        }
        return i;
    }
    public boolean Login(String name,String pwd){
        boolean f=false;
        PreparedStatement pred=null;
        ResultSet resultSet=null;
        Connection con=getConnection();
        String sql="select * from name where name=? and pwd=?";
        try {
            pred=con.prepareStatement(sql);
            pred.setString(1, name);
            pred.setString(2, pwd);
            resultSet=pred.executeQuery();
            while(resultSet.next()){
                f=true;
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return f;
    }
      
}

    package myh2;
    public class Users {
    private Integer id;
    private String name;
    private String pwd;
      
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPwd() {
        return pwd;
    }
    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
    public Users() {
        super();
    }
    public Users(Integer id, String name, String pwd) {
        super();
        this.id = id;
        this.name = name;
        this.pwd = pwd;
    }
}

<%@page import="glg.UserDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<!DOCTYPE HTML>
<html>
<head>
<base href="<%=basePath%>">
<title></title>
</head>
<body>
<h1>登录</h1>
    <script>
        function yz() {
            if (form.name.value == null) {
                alert('用户名不能为空');
                return;
            }
            if (form.pwd.value == null) {
                alert('密码不能为空');
                return;
            }
            if (form.name.value != null && form.pwd.value != null) {
                form.submit();
            }
        }
    </script>
    <form action="dologin.jsp" method="post" name="form">
        <table>
            <tr>
                <td>用户名</td>
                <td><input type="text" name="name"></td>
            </tr>
            <tr>
                <td>密码</td>
                <td><input type="password" name="pwd"></td>
            </tr>
            <tr>
                <td><input type="button" value="登录" onclick="yz()"></td>
                <td><a href="register.jsp">注册</a></td>
            </tr>
        </table>
    </form>
</body>
</html>

<%@page import="glg.UserDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<!DOCTYPE HTML>
<html>
<head>
<base href="<%=basePath%>">
<title></title>
</head>
<body>
    <%
        String name = request.getParameter("name");
        String pwd = request.getParameter("pwd");
        UserDao ud = new UserDao();
        if(ud.Login(name, pwd)){
        session.setAttribute("name", name);
        request.getRequestDispatcher("main.jsp").forward(request, response);
        }else{
        out.print("登录失败，即将跳回登录页.....");
        response.setHeader("refresh", "2;url=Login.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>
<html>
<head>
<base href="<%=basePath%>">
<title>注册</title>
</head>
<body>
    <h1>注册</h1>
    <script>
        function yz() {
            if (form.name.value == "") {
                alert('用户名不能为空');
                return;
            }
            if (form.pwd.value == "") {
                alert('密码不能为空');
                return;
            }
            form.submit();
        }
    </script>
    <form action="doregister.jsp" method="post" name="form">
        <table>
            <tr>
                <td>用户名</td>
                <td><input type="text" name="name">
                </td>
            </tr>
            <tr>
                <td>密码</td>
                <td><input type="password" name="pwd">
                </td>
            </tr>
            <tr>
                <td><input type="button" value="注册" onclick="yz()">
                </td>
                <td><a href="Login.jsp">登录</a>
                </td>
            </tr>
        </table>
    </form>
</body>
</html>

<%@page import="glg.UserDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<!DOCTYPE HTML>
<html>
<head>
<base href="<%=basePath%>">
<title></title>
</head>
<body>
    <%
        String name = request.getParameter("name");
        String pwd = request.getParameter("pwd");
        UserDao ud = new UserDao();
        int i=ud.Register(name, pwd);
        if(i>0){
        out.print("注册成功，即将跳到登录页.....");
        response.setHeader("refresh", "2;url=Login.jsp");
        }else{
        out.print("注册失败，即将跳回注册页.....");
        response.setHeader("refresh", "2;url=register.jsp");
        }
    %>
  
</body>
</html>

<%@page import="glg2.Email"%>
<%@page import="glg.EmailDao"%>
<%@page import="glg.UserDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<!DOCTYPE HTML>
<html>
<head>
<base href="<%=basePath%>">
<title></title>
</head>
<body>
    <%
        String name = (String) session.getAttribute("name");
        EmailDao dao = new EmailDao();
        List<Email> list = dao.getAll(name);
    %>
    欢迎<%=name%>
    <br>
    <br>
    <table border="1px" cellspacing="0" cellpadding="30px">
        <thead></thead>
        <tr>
            <th>发件人</th>
            <th>标题</th>
            <th>时间</th>
            <th>状态</th>
        </tr>
        <tbody></tbody>
        <%
            for (int i = 0; i < list.size(); i++) {
        %>
        <tr>
            <td><%out.print(list.get(i).getAddresser().toString()); %></td>
            <td><%out.print(list.get(i).getHead().toString()); %></td>
            <td><%out.print(list.get(i).getTime().toString()); %></td>
            <td><%if(list.get(i).getState()==0){
            out.print("<img src='img/w.png'></img>");
            }else{
            out.print("<img src='img/y.png'></img>");
            }%></td>
        </tr>
        <%
            }
        %>
  
    </table>
  
  
  
</body>
</html>