本文實(shí)例講述了Hibernate的Annotation版Hello world實(shí)現(xiàn)方法。分享給大家供大家參考，具體如下：
需要引入的包：hibernate-commons-annotations-4.0.4.Final.jar
由于我使用的是：hibernate-release-4.3.5.Final，在required目錄下已經(jīng)有了。
bean：
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import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.Id;import javax.persistence.Table;@Entity@Table(name="teacher")public class Teacher { private int id; private String name; private String title; @Id public int getId() { return id; } public void setId(int id) { this.id = id; } @Column(name="name") public String getName() { return name; } public void setName(String name) { this.name = name; } @Column(name="title") public String getTitle() { return title; } public void setTitle(String title) { this.title = title; }} |
對(duì)應(yīng)的hibernate.cfg.xml文件：
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<?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/hibernate</property> <property name="connection.username"></property> <property name="connection.password"></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="com/hibernate/model/Student.hbm.xml"/> <mapping class="com.hibernate.model.Teacher"/> </session-factory></hibernate-configuration> |
測(cè)試類：
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import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.cfg.AnnotationConfiguration;import org.hibernate.cfg.Configuration;import com.huxing.hibernate.model.Student;import com.huxing.hibernate.model.Teacher;public class StudentTest { public static void main(String[] args) { Student a = new Student(); a.setId(123); a.setAge(32); a.setName("hello hibernate!"); Teacher tea = new Teacher(); tea.setId(4); tea.setName("mysql"); tea.setTitle("high"); Configuration cfg = new AnnotationConfiguration(); SessionFactory cf = cfg.configure().buildSessionFactory(); Session session = cf.openSession(); session.beginTransaction(); session.save(tea); session.getTransaction().commit(); session.close(); cf.close(); }} |
注意：代碼省略了包路徑。
其他方面：
1.注解可以加在屬性上，也可以加在get方法上。
2.注解的mapping和xml配置的xml的不同！一個(gè)是resource,一個(gè)是class。
希望本文所述對(duì)大家Hibernate框架程序設(shè)計(jì)有所幫助。
