Hibernate映射问题
小弟用Hibernate映射postgresql时出现如下问题
这是hbm文件
<hibernate-mapping>
<class name= "jp.talentDespatch.db.Accessories " table= "accessories " schema= "public ">
<id name= "acIndex " type= "java.lang.Integer ">
<column name= "ac_index " />
<generator class= "assigned " />
</id>
<many-to-one name= "message " class= "jp.talentDespatch.db.Message " fetch= "select ">
<column name= "mes_index " />
</many-to-one>
<property name= "acAccessories " type= "java.lang.String ">
<column name= "ac_accessories " />
</property>
<property name= "acMender " type= "java.lang.String ">
<column name= "ac_mender " length= "50 " />
</property>
<property name= "acReTime " type= "java.util.Date ">
<column name= "ac_re_time " length= "8 " />
</property>
<property name= "acCreator " type= "java.lang.String ">
<column name= "ac_creator " length= "50 " />
</property>
<property name= "acCrTime " type= "java.util.Date ">
<column name= "ac_cr_time " length= "8 " />
</property>
</class>
</hibernate-mapping>
这是java bean
private Integer acIndex;
private Message message;
private String acAccessories;
private String acMender;
private Date acReTime;
private String acCreator;
private Date acCrTime;
// Constructors
/** default constructor */
public AbstractAccessories() {
}
/** minimal constructor */
public AbstractAccessories(Integer acIndex) {
this.acIndex = acIndex;
}
/** full constructor */
public AbstractAccessories(Integer acIndex, Message message, String acAccessories, String acMender, Date acReTime, String acCreator, Date acCrTime) {
this.acIndex = acIndex;
this.message = message;
this.acAccessories = acAccessories;
this.acMender = acMender;
this.acReTime = acReTime;
this.acCreator = acCreator;
this.acCrTime = acCrTime;
}
get set 方法都有，这里就不写了
这是数据库表生成语句
CREATE TABLE accessories
(
ac_index serial NOT NULL,
ac_accessories bytea,
mes_index integer,
ac_mender character varying(50),
ac_re_time timestamp without time zone,
ac_creator character varying(50),
ac_cr_time timestamp without time zone,
CONSTRAINT accessories_pkey PRIMARY KEY (ac_index),
CONSTRAINT accessories_mes_index_fkey FOREIGN KEY (mes_index)
REFERENCES message (mes_index) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION
)
WITHOUT OIDS;
ALTER TABLE accessories OWNER TO dms;
这是对应序列生成语句
CREATE SEQUENCE accessories_ac_index_seq
INCREMENT 1
MINVALUE 1
MAXVALUE 9223372036854775807
START 1
CACHE 1;
ALTER TABLE accessories_ac_index_seq OWNER TO dms;
现在一次性要向表里插入多条数据，但是主键应该设置成什么样子？
有知道的大侠告诉小弟一声，谢谢？
我现在的异常信息是：
org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save(): jp.talentDespatch.db.Accessories
at org.hibernate.id.Assigned.generate(Assigned.java:33)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:91)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:98)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:502)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:494)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:490)
at jp.talentDespatch.db.dao.base.BaseAccessoriesDAO.attachDirty(BaseAccessoriesDAO.java:104)
at jp.talentDespatch.manager.message.service.impl.SendMailServiceImpl.sendMail(SendMailServiceImpl.java:592)
at jp.talentDespatch.manager.message.action.NewMessageAction.execute(NewMessageAction.java:88)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at jp.talentDespatch.common.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:32)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
[解决办法]
increment
