使用EclipseLink JPA绑定大于255个字符的字符串

@Entity
public class MyEntity {
    @Id
    private Long id;

    @Lob
    private String longText;

    // 其他字段和getter、setter方法
}

             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
             version="2.1">

   <persistence-unit name="my-persistence-unit" transaction-type="JTA">
       <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
        <jta-data-source>jdbc/myDataSource</jta-data-source>
        <exclude-unlisted-classes>false</exclude-unlisted-classes>
       <properties>
           <property name="eclipselink.jpa.persistece-context-factory" value="org.eclipse.persistence.jpa.PersistenceProvider"/>
            <!-- 其他配置属性 -->
        </properties>
    </persistence-unit>
</persistence>