Spring Hibernate Spatial和PostGIS主要关键问题

我是PostGIS新手，我正在使用带有Hibernate Spatial和Spring框架的PostGIS。问题是主键没有自动设置，在将数据插入数据库时出现以下错误：

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.hibernate.exception.ConstraintViolationException: ERROR: null value in column "id" violates not-null constraint
Detail: Failing row contains (null,name , country).

我已经在MySQL上测试了代码，它工作正常。然而，当使用Hibernate Spatial和PostGIS时，它给了我提到的错误。模型如下：

@Entity
@Table(name="person")
public class Person {

    @Id
    @Column(name="id")
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    private int id;
    private String name;
    private String country;
    ...
}

以下是插入数据的代码：

 public void addPerson(Person p) {
    Session session = this.sessionFactory.getCurrentSession();
    session.persist(p);
}

以下是Maven中的依赖项：

postgis-jdbc: 1.5.2
postgresql: 8.4-702.jdbc3
hibernate-entitymanager: 4.0.0.Final
hibernate-core: 4.0.0.Final
hibernate-spatial: 4.0
commons-dbcp: 1.4
spring version: 4.0.3.RELEASE

和休眠配置：

<beans:bean id="hibernate4AnnotatedSessionFactory"
    class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <beans:property name="dataSource" ref="dataSource" />
    <beans:property name="annotatedClasses">
        <beans:list>
            <beans:value>it.polimi.thesis.model.Person</beans:value>
        </beans:list>
    </beans:property>
    <beans:property name="hibernateProperties">
        <beans:props>
            <beans:prop key="hibernate.dialect">org.hibernate.spatial.dialect.postgis.PostgisDialect
            </beans:prop>
            <beans:prop key="hibernate.show_sql">true</beans:prop>
            <beans:prop key="hibernate.ddl-auto">update</beans:prop>
        </beans:props>
    </beans:property>
</beans:bean>

<beans:prop key="hibernate.format_sql">true</beans:prop>

it.polimi.thesis.model.Person
org.hibernate.spatical.dial.postgis.postgisdial
真的
更新

---

我将感谢任何帮助。如果需要任何其他信息，请告诉我。

好的，经过一些搜索后，此解决方案有效：

@Id
@Column(name="id", unique=true, nullable=false)
@GeneratedValue(generator="increment")
@GenericGenerator(name="increment", strategy = "increment")
private int id;

我还添加了以下hibernate配置：

<beans:bean id="hibernate4AnnotatedSessionFactory"
    class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <beans:property name="dataSource" ref="dataSource" />
    <beans:property name="annotatedClasses">
        <beans:list>
            <beans:value>it.polimi.thesis.model.Person</beans:value>
        </beans:list>
    </beans:property>
    <beans:property name="hibernateProperties">
        <beans:props>
            <beans:prop key="hibernate.dialect">org.hibernate.spatial.dialect.postgis.PostgisDialect
            </beans:prop>
            <beans:prop key="hibernate.show_sql">true</beans:prop>
            <beans:prop key="hibernate.ddl-auto">update</beans:prop>
        </beans:props>
    </beans:property>
</beans:bean>

<beans:prop key="hibernate.format_sql">true</beans:prop>

true