struts的几个小异常

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ERROR org.apache.struts2.dispatcher.DefaultDispatcherErrorHandler - Exception occurred during processing request: [org.hibernate.PropertyValueException: not-null property references a null or transient value: entity.Types.name, not-null property references a null or transient value: entity.Types.name]

拽住错误的核心提示：not-null property references a null or transient value: entity.Types.name, 告诉你Types为null了。马上查代码。

ERROR org.apache.struts2.dispatcher.DefaultDispatcherErrorHandler - Exception occurred during processing request: [org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save(): entity.Types, ids for this class must be manually assigned before calling save(): entity.Types]

依旧抓住错误：ids for this class must be manually assigned 。很明显，这个类时自增长的，此次数据库为oracle，因此要做自增长处理。
sql代码：

create sequence SEQ_Typesminvalue 1maxvalue 99999start with 30increment by 1cache 20;

注解设置：

@Id    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "generator")        @SequenceGenerator(name = "generator",sequenceName="SEQ_Types")

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