hibernate快速搭建开发环境

1.ecplise集成hibernate插件快速方便hibernate的开发

Hibernate Tools是用于Hibernate的工具集，实现为Eclipse插件的集成套件 ，以及用于集成到构建周期中的统一Ant任务。Hibernate Tools是JBoss Tools的核心组件， 因此也是JBoss Developer Studio的一部分。

http://hibernate.org/tools/

如果创建hibernate.cfg.xml失败在选择版本的时候降低版本选择就可以

在ecplise市场中进行搜索在线安装

2.maven搭建，引入pom

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

 
  <dependencies>
	 <dependency>
	  <groupId>org.hibernate</groupId>
	  <artifactId>hibernate-core</artifactId>
	   <version>5.0.7.Final</version>
	</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-entitymanager -->
	<dependency>
	    <groupId>org.hibernate</groupId>
	    <artifactId>hibernate-entitymanager</artifactId>
	    <version>5.0.7.Final</version>
	</dependency>
	<!-- https://mvnrepository.com/artifact/log4j/log4j -->
	<dependency>
	    <groupId>log4j</groupId>
	    <artifactId>log4j</artifactId>
	    <version>1.2.17</version>
	</dependency>
	<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
	<dependency>
	    <groupId>org.slf4j</groupId>
	    <artifactId>slf4j-api</artifactId>
	    <version>1.7.12</version>
	</dependency>
	<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
	<dependency>
	    <groupId>org.slf4j</groupId>
	    <artifactId>slf4j-log4j12</artifactId>
	    <version>1.7.12</version>
	    <scope>test</scope>
	</dependency>
	<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
	<dependency>
	    <groupId>mysql</groupId>
	    <artifactId>mysql-connector-java</artifactId>
	    <version>5.1.38</version>
	</dependency>
	<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
	<dependency>
	    <groupId>org.projectlombok</groupId>
	    <artifactId>lombok</artifactId>
	    <version>1.16.20</version>
	   <!--  <scope>provided</scope> -->
	</dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <finalName>hibernate_project</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>

3.hibernate.cfg.xml常用入门配置

<?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>
    	<!-- 数据信息 -->
    	<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    	<property name="hibernate.connection.url">jdbc:mysql://192.168.174.135/hibernate</property>
    	<property name="hibernate.connection.username">root</property>
    	<property name="hibernate.connection.password">root3306</property>
    	<!-- 配置hibernate信息 -->
    	<!-- 打印sql,格式化sql -->
    	<property name="hibernate.show_sql">true</property>
    	<property name="hibernate.format_sql">true</property>
    	<!-- hibernate创建表 ，有则更新，无则创建-->
    	<property name="hibernate.hbm2ddl.auto">update</property>
    	<!-- sql方言 -->
    	<property name="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>
    
    	<!-- 映射文件 -->
    	<mapping resource="com/cn/xulei/hibernate/entity/User.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

4.创建实体

public class User {
	private int id;
	private String uname;
	private String email;
	private int age;
	private int sex;
}

创建user.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 2019-10-12 22:50:04 by Hibernate Tools 3.5.0.Final -->
<hibernate-mapping>
    <class name="com.cn.xulei.hibernate.entity.User" table="USER">
        <id name="id" type="int">
            <column name="ID" />
            <generator class="native" />
        </id>
        <property name="uname" type="java.lang.String">
            <column name="UNAME" />
        </property>
        <property name="email" type="java.lang.String">
            <column name="EMAIL" />
        </property>
        <property name="age" type="int">
            <column name="AGE" />
        </property>
        <property name="sex" type="int">
            <column name="SEX" />
        </property>
    </class>
</hibernate-mapping>

5.测试代码

package com.cn.hibernate;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.junit.Test;

import it.com.cn.hibernate.entity.User;

public class TestHibernate {

	@Test
	public void testAdd() {
		//src目录下加载配置文件
		Configuration cfg = new Configuration();
		cfg.configure();
		/**
		 * 读取hibernate核心配置文件，创建sessionfactory
		 * 根据映射文件创建数据库表
		 */
		SessionFactory sessionFactory = cfg.buildSessionFactory();
		Session session = sessionFactory.openSession();
		Transaction transaction = session.beginTransaction();
		User user = new User(19,"杨过","[e-mail]",19,1);
		session.save(user);
		transaction.commit();
		session.close();
		sessionFactory.close();
		
	}
	
}