1.新建maven项目 testHibernate,pom.xml

      
          
       
        4.0.0
           
       
        testHibernateAnno
           
       
        testHibernateAnno
           
       
        1.0-SNAPSHOT
           
               
                    
         
          junit
                     
         
          junit
                     
         
          3.8.1
                     
         
          test
                 
                
                
                    
         
          org.hibernate
                     
         
          hibernate-core
                     
         
          3.6.10.Final
                 
                
                
                    
         
          log4j
                     
         
          log4j
                     
         
          1.2.16
                 
                
                    
         
          org.slf4j
                     
         
          slf4j-nop
                     
         
          1.6.4
                 
                
                
                    
         
          javassist
                     
         
          javassist
                     
         
          3.12.0.GA
                 
                
                
                    
         
          mysql
                     
         
          mysql-connector-java
                     
         
          5.1.6
                 
            
       
      

2.在resource文件夹下新建hibernate.cfg.xml文件

      
          
               
                
        
         org.gjt.mm.mysql.Driver
                
        
         jdbc:mysql://192.168.32.95:3306/db2
                
        
         DB_WX_APP
                
        
         LH_longfor
                
                
        
         1
                
                
        
         org.hibernate.dialect.MySQLDialect
                
                
        
         thread
                
                
        
         org.hibernate.cache.NoCacheProvider
                
                
        
         true
                
        
         true
                
                
        
         update
                
            
       
      

3.新建实体类 Event.java

package com.demo.demo;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.Id;import javax.persistence.Table;import java.util.Date;  @Entity  @Table(name="EVENTS")public class Event {      @Id      @Column(name = "EVENT_ID")    private Long id;//id      @Column(name = "TITLE")    private String title;//标题      @Column(name = "EVENT_DATE")    private Date date;//日期    public Long getId() {        return id;    }    public void setId(Long id) {        this.id = id;    }    public String getTitle() {        return title;    }    public void setTitle(String title) {        this.title = title;    }    public Date getDate() {        return date;    }    public void setDate(Date date) {        this.date = date;    }}

4.新建测试类 Test.java

package com.demo.demo;import java.util.List;import java.util.Date;import java.util.Iterator;import org.hibernate.HibernateException;import org.hibernate.Session;import org.hibernate.Transaction;import org.hibernate.cfg.AnnotationConfiguration;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;public class Test {    private static SessionFactory factory;    /**         * @param args         */        public static void main(String[] args) {            // TODO Auto-generated method stub            Test mgr = new Test();            try{                factory = new AnnotationConfiguration().                        configure().                        //addPackage("com.xyz") //add package if used.                                addAnnotatedClass(Event.class).                                buildSessionFactory();            }catch (Throwable ex) {                System.err.println("Failed to create sessionFactory object." + ex);                throw new ExceptionInInitializerError(ex);            }            Event e=new Event();          e.setId(10011L);          e.setTitle("aaa");          e.setDate(new Date());          Session sesion=factory.openSession();          sesion.beginTransaction();          sesion.save(e);          sesion.getTransaction().commit();          System.out.println("OK");        }}

运行test类，输出OK

 

　　在hibernate4之后就移除了AnnotationConfiguration()方法了，Configuration已经包含了注解的方法，所以你可以直接用：

Configuration con = new Configuration();SessionFactory sf = con.configure().buildSessionFactory();Session s = sf.openSession();

 

来获得用注解声明映射关系的Session了，加上配置：

就OK了，方便了很多。

 

但在配置过程中我还报了一个错误：

1	No identifier specified for entity: student.Teacher

　　这是因为我把主键id的注解加在了setId上，把他加在getId上就解决了。（真是粗心）

 

https://pan.baidu.com/s/1ayir_7wk20y9CESFvCa2qg