hibernate属性级别注解实例代码

<!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="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> 
    <!--  
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> 
    <property name="hibernate.connection.url">jdbc:mysql:///hibernate_struts_stumanager</property> 
     --> 
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> 
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/mypage</property> 
     
     
    <property name="hibernate.connection.username">root</property> 
    <property name="hibernate.connection.password">root</property> 
    <property name="hibernate.show_sql">false</property> 
    <property name="hibernate.hbm2ddl.auto">create</property> 
  <!--   <property name="hibernate_current_session_context_class">thread</property> --> 
    <property name="current_session_context_class">thread</property> 
    <mapping class="com.entity.Students"/> 
  </session-factory> 
</hibernate-configuration> 

package com.entity; 
import java.io.Serializable; 
import java.util.Date; 
import javax.persistence.Column; 
import javax.persistence.Embedded; 
import javax.persistence.EmbeddedId; 
import javax.persistence.Entity;//JPA注解 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
import javax.persistence.Id; 
import javax.persistence.Table; 
import javax.persistence.Transient; 
import org.hibernate.annotations.GenericGenerator; 
/* 
 * 学生实体类 
 */ 
//@Entity// 
//@Entity(name="t_students")//如果不添加名字，则默认与实体类名字相同，如果想要自行设置表明，就需要自己进行添加 
@Entity 
@Table(name="t_students1",schema="mypage") 
public class Students implements Serializable{ 
     @Id 
//    @GeneratedValue 
//    @GeneratedValue(strategy=GenerationType.AUTO)//与@GeneratedValue结果相同，字符串类型不能指定为AUTO类型 
//     private int sid; //学号 
//    @GeneratedValue(generator="sid") 
//    @GenericGenerator(name="sid",strategy="assigned") 
//    @Column(length=11) 
//    private String sid; 
     @EmbeddedId 
     private StudentPK pk; 
//    @Id 
//     
//    @Column(length=11) 
     private String sname;//姓名 
     private String gender;//性别 
     private Date birthday;//出生日期 
     private String major;//专业 
     private Address add; 
     @Transient   //表示该字段不会被ORM映射到表里的字段 
     private double salary;//薪水 
     public Students(){ 
     } 
    public Students(StudentPK pk, String sname, String gender, 
        Date date, String major,Address add,double salary) { 
//     super(); 
      this.pk = pk; 
      this.sname = sname; 
      this.gender = gender; 
      this.birthday = date; 
      this.major = major; 
      this.add = add; 
      this.salary = salary; 
    } 
    public StudentPK getPk() { 
      return pk; 
    } 
    public void setPk(StudentPK pk) { 
      this.pk = pk; 
    } 
    public String getSname() { 
      return sname; 
    } 
    public void setSname(String sname) { 
      this.sname = sname; 
    } 
    public String getGender() { 
      return gender; 
    } 
    public void setGender(String gender) { 
      this.gender = gender; 
    } 
    public Date getBirthday() { 
      return birthday; 
    } 
    public void setBirthday(Date birthday) { 
      this.birthday = birthday; 
    } 
    public String getMajor() { 
      return major; 
    } 
    public void setMajor(String major) { 
      this.major = major; 
    } 
    public Address getAdd() { 
      return add; 
    } 
    public void setAdd(Address add) { 
      this.add = add; 
    } 
    public double getSalary() { 
      return salary; 
    } 
    public void setSalary(double salary) { 
      this.salary = salary; 
    } 
      
} 

package com.entity; 
import java.io.Serializable; 
import javax.persistence.Column; 
import javax.persistence.Embeddable; 
@Embeddable 
public class StudentPK implements Serializable{ 
    /** 
   * 
   */ 
  private static final long serialVersionUID = 1L; 
  @Column(length=18) 
  private String id;//身份证号 
  @Column(length=8) 
    private String sid;//学号 
    public StudentPK(){ 
    } 
  public StudentPK(String id, String sid) { 
    this.id = id; 
    this.sid = sid; 
  } 
  public String getId() { 
    return id; 
  } 
  public void setId(String id) { 
    this.id = id; 
  } 
  public String getSid() { 
    return sid; 
  } 
  public void setSid(String sid) { 
    this.sid = sid; 
  } 
  @Override 
  public boolean equals(Object obj) { 
    // TODO Auto-generated method stub 
    return super.equals(obj); 
  } 
  @Override 
  public int hashCode() { 
    // TODO Auto-generated method stub 
    return super.hashCode(); 
  } 
} 

package com.entity; 
import javax.persistence.Embeddable; 
import javax.persistence.Embedded; 
// 地址类 
@Embeddable //表示是一个嵌入类，这个类的对象在另一个实体类中充当属性  
public class Address { 
   private String postCode;//邮编 
   private String address;//地址 
   private String phone;//联系电话 
   public Address(){ 
   } 
    
  public Address(String postCode, String address, String phone) { 
    this.postCode = postCode; 
    this.address = address; 
    this.phone = phone; 
  } 
 
  public String getPostCode() { 
    return postCode; 
  } 
  public void setPostCode(String postCode) { 
    this.postCode = postCode; 
  } 
  @Embedded 
  public String getAddress() { 
    return address; 
  } 
  public void setAddress(String address) { 
    this.address = address; 
  } 
  public String getPhone() { 
    return phone; 
  } 
  public void setPhone(String phone) { 
    this.phone = phone; 
  } 
    
} 

package com.entity; 
 
import java.util.Date; 
import java.util.EnumSet; 
import org.hibernate.Session; 
import org.hibernate.SessionFactory; 
import org.hibernate.Transaction; 
import org.hibernate.cfg.Configuration; 
import org.hibernate.service.ServiceRegistry; 
import org.hibernate.service.ServiceRegistryBuilder; 
import org.hibernate.tool.hbm2ddl.SchemaExport; 
import org.junit.Test; 
public class TestStudents { 
  @Test 
    public void testShemaExport(){ 
      //创建hibernate配置对象 
      Configuration config = new Configuration().configure(); 
      //创建服务注册对象 
      ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(config.getProperties()).buildServiceRegistry(); 
      //生成SessionFactory 
      SessionFactory sessionFactory = config.buildSessionFactory(serviceRegistry); 
      SchemaExport export = new SchemaExport(config); 
      export.create(true,true); 
    } 
  @Test 
  public void addStudents(){ 
     //创建hibernate配置对象 
    Configuration config = new Configuration().configure(); 
    //创建服务注册对象 
    ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(config.getProperties()).buildServiceRegistry(); 
    //生成SessionFactory 
    SessionFactory sessionFactory = config.buildSessionFactory(serviceRegistry); 
    //创建会话 
    Session session = sessionFactory.getCurrentSession(); 
    //创建事务 
    Transaction tx = session.beginTransaction(); 
    Address add = new Address("700005","河南理工大学","15039117115"); 
    StudentPK pk = new StudentPK("012345678912345678","55555555"); 
    Students s = new Students(pk,"张三丰","男",new Date(),"太极拳",add,7899); 
    session.save(s); 
    tx.commit(); 
//   SchemaExport export = new SchemaExport(config); 
//    export.create(true,true); 
  } 
}