hibernate联合主键

public class Customer implements Serializable {
    private String countryCode;
    private String idCardNo;
    private String firstName;
    private String lastName;
    private String address;
    private String email;
然后是setter和getter方法

<hibernate-mapping>
   <class name="lianhezhujian.Customer">
       <composite-id>
           <key-property name="countryCode" length="100"></key-
property>
           <key-property name="idCardNo" length="50"></key-property>
       </composite-id>
       <property name="address"></property>
       <property name="email"></property>
       <property name="firstName"></property>
       <property name="lastName"></property>

   </class>
</hibernate-mapping>

public class Customer implements Serializable {
    private String CustId;
    private String firstName;
    private String lastName;

    private String address;
    private String email;

public class CustId {
    private String countryCode;
    private String idCardNo;

<composite-id class="lianhefengzhuang.CustId">
    <key-property name="countryCode" length="100"></key-property>
    <key-property name="idCardNo" length="50"></key-property>
</composite-id>

@Entity
@Table(name = "customer2")
public class Customer implements Serializable{
    @EmbeddedId
    private CustomerId customerId;
    @Column(name = "first_name")
    private String firstName;
    @Column(name = "last_name",length = 50)
    private String lastName;
    private String address;
    private String email;

@Embeddable
public class CustomerId implements Serializable{
    @Column(length =50)
    private String countryCode;
    @Column(length = 50)
    private String idCardNo;
hibernamte.cfg.xml配置文件注意要更改mapping配置文件

<mapping class="Hibernate_lianhezhujian.Customer"></mapping>