JSP第六次作业

DeleteUserTest

package com.neusoft.text;

import java.sql.Connection;
import java.sql.Statement;

public class DeleteUserTest {
    public static void main(String[] args) {

        try {
            Connection con=JDBCUils.getConnection();
            Statement state=    con.createStatement();
            int rows=state.executeUpdate("delete from users where id=1101");

            
            
            con.close();
            state.close();

        } catch (Exception e) {

            e.printStackTrace();
        }
        }
    
    
}

FindAllUserTest

package com.neusoft.text;

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

public class FindAllUserTest {
    public static void main(String[] args) {

        try {
            Connection con=JDBCUils.getConnection();
            Statement state=con.createStatement();
              ResultSet rs=state.executeQuery("select*from users");
            
                 while(rs.next()) {
                     
                     System.out.println(rs.getInt("id")+","+rs.getString("name")+","+rs.getString("password1")+","+rs.getString("email")+","+rs.getString("birthday"));
                 } 
              
                 rs.close();
                 state.close();
                 con.close();
                 
                
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
            
        }
}

FindUserByIdTest

package com.neusoft.text;

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

public class FindUserByIdTest {

    public static void main(String[] args) {

        try {
            Connection con=JDBCUils.getConnection();
            Statement state=con.createStatement();
              ResultSet rs=state.executeQuery("select*from users where id=1101");
            
                 while(rs.next()) {
                     
                     System.out.println(rs.getInt("id")+","+rs.getString("name")+","+rs.getString("password1")+","+rs.getString("email")+","+rs.getString("birthday"));
                 } 
                //关闭连接
                 rs.close();
                 state.close();
                 con.close();
                 
                
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
            
        }
    
    
}

JdbcInsertTest

package com.neusoft.text;

import java.sql.Connection;
import java.sql.Date;
import java.sql.PreparedStatement;

public class JdbcInsertTest {
    public static void main(String[] args) {

    try {
        Connection con=JDBCUils.getConnection();
        PreparedStatement pst=con.prepareStatement("insert into users(id,name,password1,email,birthday) "
                + "values(1101,'tom','12121','1547845124@qq.com','1985.01.19')");
    
    int rows=pst.executeUpdate();
        
        
        pst.close();
        con.close();
        
    } catch (Exception e) {

        e.printStackTrace();
    }
    }
}

JDBCUils

package com.neusoft.text;

import java.beans.Transient;
import java.sql.Connection;
import java.sql.Date;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.Statement;


public class JDBCUils {

    private static Connection con;
    static {
        
        try {
            //1.
            Class.forName("com.mysql.jdbc.Driver");
            //2.
            String url="jdbc:mysql://127.0.0.1:3306/users";
            String username="root";
            String password="admin";
            //3.
            con=DriverManager.getConnection(url,username,password);
    }catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    
    }
    
    //返回链接    connection对象
    @Transient
    public static Connection getConnection() {
        
        return con;
        
    }
    
    
}

UpdateUserTest

package com.neusoft.text;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.Statement;

public class UpdateUserTest {
    public static void main(String[] args) {

        try {
            Connection con=JDBCUils.getConnection();
            Statement state=    con.createStatement();
            int rows=state.executeUpdate("update users  set email='1547845124@bb.com'  where id=1101 ");

            
            

            con.close();
            state.close();

            
        } catch (Exception e) {

            e.printStackTrace();
        }
        }
}

User

package com.neusoft.text;

public class User {
private int id;
private String name;
private String password1;
private String email;
private String birthday;
public int getId() {
    return id;
}
public void setId(int id) {
    this.id = id;
}
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public String getPassword1() {
    return password1;
}
public void setPassword1(String password1) {
    this.password1 = password1;
}
public String getEmail() {
    return email;
}
public void setEmail(String email) {
    this.email = email;
}
public String getBirthday() {
    return birthday;
}
public void setBirthday(String birthday) {
    this.birthday = birthday;
}

}