hibernate5.2的基本配置方法(详解)_Java教程

hibernate5.2的基本配置方法(详解)

2020-11-12 17:19Java之家 Java教程

下面小编就为大家带来一篇hibernate5.2的基本配置方法(详解)。小编觉得挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧

目标：将Student实体对象加入数据库

1、首先需要下载三个东西：hibernate，slf4j，mysql。

2、分别取他们的包导入新建的项目中，我这里的版本是：hibernate-release-5.2.10里面lib目录下的required中的全部文件 slf4j-1.7.25下的受slf4j-nop-1.7.25.jar mysql的mysql-connector-java-5.1.42-bin.jar

3、在src下配置hibernate.cfg.xml(建议直接去文档复制然后改)

				?

									<?xml version='1.0' encoding='utf-8'?>

									<!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>

									<!-- Database connection settings -->

									<property name="connection.driver_class">com.mysql.jdbc.Driver</property>

									<property name="connection.url">jdbc:mysql://localhost/text02</property>

									<property name="connection.username">root</property>

									<property name="connection.password">6530033197</property>

									<!-- JDBC connection pool (use the built-in) -->

									<!--

									<property name="connection.pool_size">1</property>

									-->

									<!-- SQL dialect -->

									<property name="dialect">org.hibernate.dialect.MySQLDialect</property>

									<!-- Enable Hibernate's automatic session context management -->

									<!-- <property name="current_session_context_class">thread</property> -->

									<!-- Disable the second-level cache -->

									<property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>

									<!-- Echo all executed SQL to stdout -->

									<property name="show_sql">true</property>

									<!-- Drop and re-create the database schema on startup -->

									<!--

									<property name="hbm2ddl.auto">update</property>

									-->

									<mapping resource="student/Student.hbm.xml"/>

									</session-factory>

									</hibernate-configuration>

4、在mysql中创建student表，字段：id age name

5、创建自己的实体类在src下建包student，然后建Class：Student.java

				?

									package student;

									public class Student {

									private int id;

									private int age;

									private String name;

									public int getId() {

									return id;

									}

									public void setId(int id) {

									this.id = id;

									}

									public int getAge() {

									return age;

									}

									public void setAge(int age) {

									this.age = age;

									}

									public String getName() {

									return name;

									}

									public void setName(String name) {

									this.name = name;

									}

									public Student(int id, int age, String name) {

									super();

									this.id = id;

									this.age = age;

									this.name = name;

									}

									public Student() {

									// TODO Auto-generated constructor stub

									}

									}

6、在对应package即student下配置文件：Student.hbm.xml

				?

									<?xml version="1.0"?>

									<!DOCTYPE hibernate-mapping PUBLIC

									"-//Hibernate/Hibernate Mapping DTD 3.0//EN"

									"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

									<hibernate-mapping package="student">

									<class name="Student" table="student">

									<id name="id" column="id">

									</id>

									<property name="name" type="string" column="name"/>

									<property name="age" type="int" column="age"/>

									</class>

									</hibernate-mapping>

7、创建测试类：StudentText.java

				?

									package student;

									import org.hibernate.Session;

									import org.hibernate.SessionFactory;

									import org.hibernate.cfg.Configuration;

									public class StudentText {

									public static void main(String[] args) {

									Student stu = new Student();

									stu.setId(4);

									stu.setName("小明");

									stu.setAge(12);

									Configuration con = new Configuration();

									SessionFactory sf = con.configure().buildSessionFactory();

									Session s = sf.openSession();

									s.beginTransaction();

									s.save(stu);

									s.getTransaction().commit();

									s.close();

									sf.close();

									}

									}