ihibetnate学习之利用idea完成数据库表逆向生成实体类!

package com.entiy;

import java.util.Objects;

public class UserInfoEntity {
    private int userId;
    private StringuserName;
    private StringuserPassword;
    private StringuserEmail;
    private StringuserImage;

    public int getUserId() {
        return userId;
    }

    public void setUserId(intuserId) {
        this.userId= userId;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName= userName;
    }

    public String getUserPassword() {
        return userPassword;
    }

    public void setUserPassword(String userPassword) {
        this.userPassword= userPassword;
    }

    public String getUserEmail() {
        return userEmail;
    }

    public void setUserEmail(String userEmail) {
        this.userEmail= userEmail;
    }

    public String getUserImage() {
        return userImage;
    }

    public void setUserImage(String userImage) {
        this.userImage= userImage;
    }

    @Override
    public boolean equals(Object o) {
        if (this== o)return true;
        if (o ==null|| getClass() != o.getClass())return false;
        UserInfoEntity that = (UserInfoEntity) o;
        return userId== that.userId&&
                Objects.equals(userName, that.userName) &&
                Objects.equals(userPassword, that.userPassword) &&
                Objects.equals(userEmail, that.userEmail) &&
                Objects.equals(userImage, that.userImage);
    }

    @Override
    public int hashCode() {

        return Objects.hash(userId,userName,userPassword,userEmail,userImage);
    }
}

<?xml version='1.0'encoding='utf-8'?>
<!DOCTYPEhibernate-configurationPUBLIC
        "-//Hibernate/Hibernate Configuration DTD//EN"
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <propertyname="connection.url">jdbc:mysql://localhost:3306/my</property>
        <propertyname="connection.driver_class">com.mysql.jdbc.Driver</property>
        <propertyname="connection.username">root</property>
        <!--指定连接数据库的密码-->
        <propertyname="connection.password">123456</property>
        <!--指定连接池里最大连接数-->
        <propertyname="c3p0.max_size">30</property>
        <!--指定连接池里最小连接数-->
        <propertyname="c3p0.min_size">1</property>
        <!--指定连接池里连接的超时时长-->
        <propertyname="c3p0.timeout">5000</property>
        <!--指定连接池里最多缓存多少个Statement对象-->
        <propertyname="c3p0.max_statements">100</property>
        <!--每3000秒检查空闲连接-->
        <propertyname="c3p0.idle_test_period">3000</property>
        <!--当连接池里的连接用完的的时候，c3p0一下获取的新的链接数-->
        <propertyname="c3p0.acquire_increment">2</property>
        <!--每次都检查链接是否可用-->
        <propertyname="c3p0.validate">true</property>
        <!--指定数据库方言-->
        <propertyname="dialect">org.hibernate.dialect.MySQL57Dialect</property>
        <!--根据需要自动创建数据表-->
        <propertyname="hbm2ddl.auto">update</property>
        <!--显示Hibernate持久化操作生成的SQL-->
        <propertyname="show_sql">true</property>
        <!--将SQL脚本格式化后再输出-->
        <propertyname="hibernate.format_sql">true</property>
        <!--罗列所有持久化类的类名-->
        <mappingclass="com.MySchoolEntity"/>
        <!-- DB schema will be updated if needed -->
        <!-- <property name="hbm2ddl.auto">update</property> -->
        <mappingresource="com/MySchoolEntity.hbm.xml"/>
        <!-- <property name="connection.username"/> -->
        <!-- <property name="connection.password"/> -->

        <!-- DB schema will be updated if needed -->
        <!-- <property name="hbm2ddl.auto">update</property> -->
    </session-factory>
</hibernate-configuration>

package com;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;


public class NewStudengs {
    public static void main(String[] args)throwsException{
        //实例化Configuration
        //不带参的configure方法默认加载hibernate.cfg.xml文件
        Configuration conf=newConfiguration().configure();
        //创建会话工厂对象
        SessionFactory sf=conf.buildSessionFactory();
        //创建会话对象
        Session session=sf.openSession();
        //开始事物
        Transaction ts=session.beginTransaction();
        //---------------------------------------------------------
        //插入
        //创建实例对象
        Student student=new  Student();
        student.setName("李进");
        student.setAge("20");
        //保存消息
        session.save(student);
        //*************************************************************


        //---------------------------------------------------------
        //查询
        //加载持久化实体代码
        Student s=session.load(Student.class,1);
        System.out.println(s);
        //---------------------------------------------------------


        //---------------------------------------------------------
        //更新（改动）
        //更新持久化实体
        Student ss=session.load(Student.class,3);
        ss.setName("刘康");
        ss.setAge("33");
        session.flush();
        //---------------------------------------------------------


        //---------------------------------------------------------
        //删除
        //删除持久化实体
        Student sss=session.load(Student.class,3);
        session.delete(sss);
        //---------------------------------------------------------
       

        //*************************************************************
        //提交事务
        ts.commit();
        //关闭session
        session.close();
        sf.close();
    }
}