Hibernate实战——Temporal注解

偏执的太偏执、 2021-07-24 11:58 452阅读 0赞

**一 配置**

<?xml version="1.0" encoding="GBK"?>
    <!DOCTYPE hibernate-configuration PUBLIC
         "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
         "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
    <hibernate-configuration>
         <session-factory>
               
               <property  name="connection.driver_class">com.mysql.jdbc.Driver</property>
               
               <property  name="connection.url">jdbc:mysql://localhost/hibernate</property>
               
               <property name="connection.username">root</property>
               
               <property name="connection.password">32147</property>
               
               <property  name="hibernate.c3p0.max_size">20</property>
               
               <property name="hibernate.c3p0.min_size">1</property>
               
               <property  name="hibernate.c3p0.timeout">5000</property>
               
               <property  name="hibernate.c3p0.max_statements">100</property>
               <property  name="hibernate.c3p0.idle_test_period">3000</property>
               <property  name="hibernate.c3p0.acquire_increment">2</property>
               <property  name="hibernate.c3p0.validate">true</property>
               
               <property  name="dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
               
               <property  name="hbm2ddl.auto">update</property>
               
               <property name="show_sql">true</property>
               
               <property name="hibernate.format_sql">true</property>
               
               <mapping class="org.crazyit.app.domain.Person"/>
         </session-factory>
    </hibernate-configuration>

**二 PO**

package org.crazyit.app.domain;
    
    import java.util.*;
    import javax.persistence.*;
    
    @Entity
    @Table(name="person_inf")
    public class Person
    {
        @Id // 用于修饰标识属性
        // 指定该主键列的主键生成策略
        @GeneratedValue(strategy=GenerationType.IDENTITY)
        private Integer id;
        // @Column指定该属性映射的列信息，此处指定了列名、长度
        @Column(name="person_name" , length=50)
        private String name;
        @Temporal(TemporalType.DATE)
        private Date birth;
    
        // id的setter和getter方法
        public void setId(Integer id)
        {
            this.id = id;
        }
        public Integer getId()
        {
            return this.id;
        }
    
        // name的setter和getter方法
        public void setName(String name)
        {
            this.name = name;
        }
        public String getName()
        {
            return this.name;
        }
    
        // birth的setter和getter方法
        public void setBirth(Date birth)
        {
            this.birth = birth;
        }
        public Date getBirth()
        {
            return this.birth;
        }
    
    }

**三 测试**

package lee;
    
    import org.hibernate.*;
    import org.hibernate.cfg.*;
    import org.hibernate.service.*;
    import org.hibernate.boot.registry.*;
    import org.crazyit.app.domain.*;
    import java.io.*;
    
    
    public class PersonManager
    {
        public static void main(String[] args)
            throws Exception
        {
            // 实例化Configuration，
            Configuration conf = new Configuration()
                .configure();
            ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder()
                .applySettings(conf.getProperties()).build();
            // 以Configuration实例创建SessionFactory实例
            SessionFactory sf = conf.buildSessionFactory(serviceRegistry);
            // 创建Session
            Session sess = sf.openSession();
            // 开始事务
            Transaction tx = sess.beginTransaction();
            // 创建Person对象
            Person person = new Person();
            // 为Person对象的属性设置值
            person.setName("crazyit.org");
            person.setBirth(new java.util.Date());
            // 保存Person对象
            sess.save(person);
            // 提交事务
            tx.commit();
            // 关闭Session
            sess.close();
            sf.close();
        }
    }

**四 测试效果**

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