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老生常谈的session的问题

HibernateJavaApacheStrutsAOP 
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目前的结构采用的是Struts+spring+hibernate,目前遇到一个问题,Riskdutyfactor表与riskDuty是多对多的关系,中间表为factorRiskDuty

配置文件如下:

RISKDUTY表:

xml 代码
  1. <hibernate-mapping>  
  2.     <class name="com.sleb.po.Riskduty" table="RISKDUTY" schema="XFLIU">  
  3.         <id name="riskdutyid" type="integer">  
  4.             <column name="RISKDUTYID" />  
  5.             <generator class="sequence" >  
  6.             <param name="sequence">S_RISKDUTY</param>  
  7.             </generator>  
  8.         </id>  
  9. .....   
  10.         <set name="riskdutyrisks" inverse="true">  
  11.             <key>  
  12.                 <column name="RISKDUTYID" />  
  13.             </key>  
  14.             <one-to-many class="com.sleb.po.Riskdutyrisk" />  
  15.         </set>  
  16.         <!-- 设计责任和责任要素的多对多的关联，手动修改过，中间表名称为FACTORRISKDUTY-->  
  17.         <set name="riskdutyfactors" table="FACTORRISKDUTY" cascade="save-update">  
  18.             <key>  
  19.                 <column name="RISKDUTYID" />  
  20.             </key>  
  21.             <many-to-many class="com.sleb.po.Riskdutyfactor" column="RISKDUTYFACTORID" />  
  22.         </set>  
  23.     </class>  
  24. </hibernate-mapping>  


------------------------

riskdutyfactor表映射文件: ----------先对以上进行解释,有一个界面是用来增加RISKDUTYFACTOR表中的数据的,另一个界面用来增加RISKDUTY数据的,在增加RISKDUTY的时候,需要使用RISKDUTYFACTOR表中的数据,由于是多对多的关系,因此增加FACTORRISKDUTY中间表.由以上可以知道riskduty增加的时候,再对中间表进行更新,因此设置RISKDUTY配置文件中的cascade="save-update"> 来维护关系,我想这个是正确的,因为我能正确的增加数据.RiskDutyService程序如下:
  

  1. // 保存一个责任要素   
  2. public boolean saveRiskduty(String dutyName, String dutyType,   
  3.   String[] baseChecked, String[] complexChecked) {     
  4.  riskDuty.setDutyname(dutyName);   
  5.  riskDuty.setDutytype(dutyType);   
  6.  if (baseChecked != null) {   
  7.   for (int i = 0; i < baseChecked.length; i++) {   
  8.    log.info(this.getRiskDutyFactorByPk(new Integer(baseChecked[i])).getFactorname());   
  9.    //首先根据页面上请求的ID，取得RiskDutyFactor对象，后与RiskDuty关联   
  10.    riskDuty.getRiskdutyfactors().add(this.getRiskDutyFactorByPk(new Integer(baseChecked[i])));       
  11.   }   
  12.  }   
  13.  if (complexChecked != null) {   
  14.   for (int i = 0; i < complexChecked.length; i++) {   
  15.    log.info(this.getRiskDutyFactorByPk(new Integer(complexChecked[i])).getFactorname());   
  16. /    首先根据页面上请求的ID，取得RiskDutyFactor对象，后与RiskDuty关联   
  17.    riskDuty.getRiskdutyfactors().add(this.getRiskDutyFactorByPk(new Integer(complexChecked[i])));   
  18.   }   
  19.  }   
  20.  log.info("begin save complexCheck riskDuty");   
  21.  this.getRiskDutyDAO().save(riskDuty);   
  22.   
  23.  bl=true;   
  24.  //this.getRiskDutyFactorDAO().getCurrentSession().clear();   
  25.     
  26.  return bl;   
  27. }   

第一次增加riskduty是没有任何问题的,但是第2次的时候,报如下错误:org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.sleb.po.Riskdutyfactor#1]

----------我知道出现的问题是在this.getRiskDutyFactorByPk(new Integer(baseChecked[i])));    但是在网上找了很对解决办法,都没有实现,比较纳闷,所以写在自己的BLOG中,请看看怎么修改.

this.getRiskDutyFactorByPk(new Integer(baseChecked[i])));   对它也进行说明,我们是在riskDutyService中增加了

 //根据责任要素主键，取得一个责任要素对象,该方法避免了service调用service是的事务调用事务的问题
 public Riskdutyfactor getRiskDutyFactorByPk(Integer id) {
   return (Riskdutyfactor)this.getRiskDutyFactorDAO().getByPk(Riskdutyfactor.class,id);
 }

方法直接调用RiskDutyFactorDAO中的方法,这样做的目的是避免了使用riskDutyService调用riskDutyFactorService.因此spring 中的配置文件修改为:
 <!---->
 请教高手!

xml 代码

<bean id="riskDutyService" parent="proxyTemplate"></bean>

  1. <!--riskDuty service -->  
  2.     <bean id="riskDutyService" parent="proxyTemplate">  
  3.         <property name="target">  
  4.             <bean class="com.sleb.service.riskDuty.spring.RiskDutyServiceImpl">  
  5.                 <property name="riskDutyDAO">  
  6.                     <ref local="riskDutyDAO" />  
  7.                 </property>  
  8.                 <property name="riskDutyFactorDAO">  
  9.                     <ref local="riskDutyFactorDAO" />  
  10.                 </property>  
  11.             </bean>  
  12.         </property>  
  13.     </bean>  
  14.     <bean id="riskDutyDAO" class="com.sleb.dao.riskDuty.RiskDutyDAOImpl">  
  15.         <property name="sessionFactory">  
  16.             <ref bean="sessionFactory" />  
  17.         </property>  
  18.     </bean>  

 

xml 代码
  1. <hibernate-mapping>  
  2.     <class name="com.sleb.po.Riskdutyfactor" table="RISKDUTYFACTOR" schema="XFLIU">  
  3.         <id name="riskdutyfactorid" type="integer">  
  4.             <column name="RISKDUTYFACTORID" />  
  5.             <generator class="sequence" >  
  6.             <param name="sequence">S_RISKDUTYFACTOR</param>  
  7.             </generator>  
  8.         </id>  
  9.         <property name="factorname" type="string">  
  10.             <column name="FACTORNAME" length="20" />  
  11.         </property>  
  12.         <property name="factorunit" type="string">  
  13.             <column name="FACTORUNIT" length="120" />  
  14.         </property>  
  15.         <property name="value" type="string">  
  16.             <column name="VALUE" length="120" />  
  17.         </property>  
  18.         <property name="sign" type="string">  
  19.             <column name="SIGN" length="1" />  
  20.         </property>  
  21.         <property name="language" type="string">  
  22.             <column name="LANGUAGE" length="1" />  
  23.         </property>  
  24.         <!-- 设计责任要素和责任的多对多的关联，手动修改过，中间表名称为FACTORRISKDUTY-->  
  25.         <set name="riskduties" table="FACTORRISKDUTY"  inverse="true" cascade="none">  
  26.             <key>  
  27.                 <column name="RISKDUTYFACTORID" />  
  28.             </key>  
  29.             <many-to-many class="com.sleb.po.Riskduty" column="RISKDUTYID" />  
  30.         </set>  
  31.     </class>  
  32. </hibernate-mapping>  


<hibernate-mapping></hibernate-mapping>

java 代码
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评论
21 楼 liutjedu 2007-02-27  
to janh:
    我在第一次操作的时候,可以增加的,但是等第2次操作的时候，就报以上错误.也就是不可能是你提到的一次处理过程中出现了多个session.

哪位大哥,可以给帮忙调试下,已经好久了,都弄不明白.谢谢!
20 楼 janh 2007-02-27  
问题应该出在session的管理上，在一次处理过程中出现了多个session，或者用到了上一处理过程中留下来的对象，自己去调试吧。
19 楼 liutjedu 2007-02-26  
大家还在过年吗?呵呵!
18 楼 liutjedu 2007-02-25  
1.数据库目前为DB2 8.2
2.执行sleb/crebas_db2.sql里的sql，生成数据库表
3.部署后先执行http://10.156.4.31:8090/sleb/riskDutyFactor/saveRiskDutyFactor.jsp，添加几个内容，后执行
http://10.156.4.31:8090/sleb/riskDuty/saveRiskDutyLink.jsp，点查询，后任意增加几个内容。第一次增加的时候不会报错，第2次就会出现错误。
所有日志如下：

13:22:14,061 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.bean.LocalStrings', returnNull=true
13:22:14,139 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.util.LocalStrings', returnNull=true
13:22:14,139 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
13:22:14,155 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
13:22:14,155 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
13:22:14,155 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
13:22:14,217 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
13:22:14,217 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
13:22:14,217 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
13:22:14,217 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
13:22:24,226 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.actions.LocalStrings', returnNull=true
13:22:24,336 INFO  [JdbcTransactionObjectSupport] JDBC 3.0 Savepoint class is available
13:22:24,508 INFO  [XmlBeanDefinitionReader] Loading XML bean definitions from class path resource [org/springframework/jdbc/support/sql-error-codes.xml]
13:22:24,570 INFO  [SQLErrorCodesFactory] SQLErrorCodes loaded: [DB2, HSQL, MS-SQL, MySQL, Oracle, Informix, PostgreSQL, Sybase]
13:22:24,820 INFO  [STDOUT] Hibernate: select count(*) as col_0_0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.FACTORNAME='保险期间' )
13:22:25,038 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTYFACTOR
13:22:25,241 INFO  [RiskDutyFactorDAOImpl] save successful
13:22:25,241 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTYFACTOR
13:22:25,241 INFO  [RiskDutyFactorDAOImpl] save successful
13:22:25,241 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTYFACTOR
13:22:25,241 INFO  [RiskDutyFactorDAOImpl] save successful
13:22:25,304 INFO  [STDOUT] Hibernate: insert into XFLIU.RISKDUTYFACTOR (FACTORNAME, FACTORUNIT, VALUE, SIGN, LANGUAGE, RISKDUTYFACTORID) values (?, ?, ?, ?, ?, ?)
13:22:25,319 INFO  [STDOUT] Hibernate: insert into XFLIU.RISKDUTYFACTOR (FACTORNAME, FACTORUNIT, VALUE, SIGN, LANGUAGE, RISKDUTYFACTORID) values (?, ?, ?, ?, ?, ?)
13:22:25,319 INFO  [STDOUT] Hibernate: insert into XFLIU.RISKDUTYFACTOR (FACTORNAME, FACTORUNIT, VALUE, SIGN, LANGUAGE, RISKDUTYFACTORID) values (?, ?, ?, ?, ?, ?)
13:22:25,757 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.bean.LocalStrings', returnNull=true
13:23:05,106 INFO  [SaveRiskDutyFactorForm] factorUnitStr.length and factotValueStr.length are 0
13:23:05,121 INFO  [STDOUT] Hibernate: select count(*) as col_0_0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.FACTORNAME='费率' )
13:23:05,121 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTYFACTOR
13:23:05,121 INFO  [RiskDutyFactorDAOImpl] save successful
13:23:05,121 INFO  [STDOUT] Hibernate: insert into XFLIU.RISKDUTYFACTOR (FACTORNAME, FACTORUNIT, VALUE, SIGN, LANGUAGE, RISKDUTYFACTORID) values (?, ?, ?, ?, ?, ?)
13:23:12,304 INFO  [SaveRiskDutyFactorForm] factotValueStr.length is 0
13:23:12,335 INFO  [STDOUT] Hibernate: select count(*) as col_0_0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.FACTORNAME='计算方向' )
13:23:12,335 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTYFACTOR
13:23:12,335 INFO  [RiskDutyFactorDAOImpl] save successful
13:23:12,335 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTYFACTOR
13:23:12,351 INFO  [RiskDutyFactorDAOImpl] save successful
13:23:12,351 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTYFACTOR
13:23:12,351 INFO  [RiskDutyFactorDAOImpl] save successful
13:23:12,351 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTYFACTOR
13:23:12,351 INFO  [RiskDutyFactorDAOImpl] save successful
13:23:12,367 INFO  [STDOUT] Hibernate: insert into XFLIU.RISKDUTYFACTOR (FACTORNAME, FACTORUNIT, VALUE, SIGN, LANGUAGE, RISKDUTYFACTORID) values (?, ?, ?, ?, ?, ?)
13:23:12,367 INFO  [STDOUT] Hibernate: insert into XFLIU.RISKDUTYFACTOR (FACTORNAME, FACTORUNIT, VALUE, SIGN, LANGUAGE, RISKDUTYFACTORID) values (?, ?, ?, ?, ?, ?)
13:23:12,367 INFO  [STDOUT] Hibernate: insert into XFLIU.RISKDUTYFACTOR (FACTORNAME, FACTORUNIT, VALUE, SIGN, LANGUAGE, RISKDUTYFACTORID) values (?, ?, ?, ?, ?, ?)
13:23:12,382 INFO  [STDOUT] Hibernate: insert into XFLIU.RISKDUTYFACTOR (FACTORNAME, FACTORUNIT, VALUE, SIGN, LANGUAGE, RISKDUTYFACTORID) values (?, ?, ?, ?, ?, ?)
13:23:16,942 INFO  [SaveRiskDutyFactorForm] factorUnitStr.length and factotValueStr.length are 0
13:23:16,957 INFO  [STDOUT] Hibernate: select count(*) as col_0_0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.FACTORNAME='免赔额' )
13:23:16,973 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTYFACTOR
13:23:16,973 INFO  [RiskDutyFactorDAOImpl] save successful
13:23:16,973 INFO  [STDOUT] Hibernate: insert into XFLIU.RISKDUTYFACTOR (FACTORNAME, FACTORUNIT, VALUE, SIGN, LANGUAGE, RISKDUTYFACTORID) values (?, ?, ?, ?, ?, ?)
13:23:20,830 INFO  [SaveRiskDutyFactorForm] factorUnitStr.length and factotValueStr.length are 0
13:23:20,861 INFO  [STDOUT] Hibernate: select count(*) as col_0_0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.FACTORNAME='赔付比例' )
13:23:20,861 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTYFACTOR
13:23:20,861 INFO  [RiskDutyFactorDAOImpl] save successful
13:23:20,877 INFO  [STDOUT] Hibernate: insert into XFLIU.RISKDUTYFACTOR (FACTORNAME, FACTORUNIT, VALUE, SIGN, LANGUAGE, RISKDUTYFACTORID) values (?, ?, ?, ?, ?, ?)
13:23:26,248 INFO  [SaveRiskDutyFactorForm] factorUnitStr.length and factotValueStr.length are 0
13:23:26,279 INFO  [STDOUT] Hibernate: select count(*) as col_0_0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.FACTORNAME='住院期间' )
13:23:26,279 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTYFACTOR
13:23:26,279 INFO  [RiskDutyFactorDAOImpl] save successful
13:23:26,295 INFO  [STDOUT] Hibernate: insert into XFLIU.RISKDUTYFACTOR (FACTORNAME, FACTORUNIT, VALUE, SIGN, LANGUAGE, RISKDUTYFACTORID) values (?, ?, ?, ?, ?, ?)
13:23:34,867 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.logic.LocalStrings', returnNull=true
13:23:36,725 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
13:25:05,542 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_, riskdutyfa0_.FACTORNAME as FACTORNAME0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_, riskdutyfa0_.VALUE as VALUE0_, riskdutyfa0_.SIGN as SIGN0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.SIGN='0' )
13:25:05,604 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_, riskdutyfa0_.FACTORNAME as FACTORNAME0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_, riskdutyfa0_.VALUE as VALUE0_, riskdutyfa0_.SIGN as SIGN0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.SIGN='0' )
13:25:05,604 INFO  [STDOUT] false
13:25:05,636 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_, riskdutyfa0_.FACTORNAME as FACTORNAME0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_, riskdutyfa0_.VALUE as VALUE0_, riskdutyfa0_.SIGN as SIGN0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.SIGN='1' )
13:25:05,667 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_, riskdutyfa0_.FACTORNAME as FACTORNAME0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_, riskdutyfa0_.VALUE as VALUE0_, riskdutyfa0_.SIGN as SIGN0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.SIGN='1' )
13:25:05,667 INFO  [STDOUT] false
13:25:05,698 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.logic.LocalStrings', returnNull=true
13:25:05,714 INFO  [PropertyMessageResources] Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
13:27:47,029 INFO  [STDOUT] Hibernate: select count(*) as col_0_0_ from XFLIU.RISKDUTY riskduty0_ where (riskduty0_.DUTYNAME='公共交通意外伤害' )
13:27:47,076 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_0_, riskdutyfa0_.FACTORNAME as FACTORNAME0_0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_0_, riskdutyfa0_.VALUE as VALUE0_0_, riskdutyfa0_.SIGN as SIGN0_0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where riskdutyfa0_.RISKDUTYFACTORID=?
13:27:47,123 INFO  [RiskDutyServiceImpl] 保险期间       
13:27:47,123 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_0_, riskdutyfa0_.FACTORNAME as FACTORNAME0_0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_0_, riskdutyfa0_.VALUE as VALUE0_0_, riskdutyfa0_.SIGN as SIGN0_0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where riskdutyfa0_.RISKDUTYFACTORID=?
13:27:47,138 INFO  [RiskDutyServiceImpl] 计算方向       
13:27:47,138 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_0_, riskdutyfa0_.FACTORNAME as FACTORNAME0_0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_0_, riskdutyfa0_.VALUE as VALUE0_0_, riskdutyfa0_.SIGN as SIGN0_0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where riskdutyfa0_.RISKDUTYFACTORID=?
13:27:47,154 INFO  [RiskDutyServiceImpl] 费率             
13:27:47,154 INFO  [RiskDutyServiceImpl] begin save complexCheck riskDuty
13:27:47,154 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTY
13:27:47,154 INFO  [RiskDutyDAOImpl] save successful
13:27:47,170 INFO  [STDOUT] Hibernate: insert into XFLIU.RISKDUTY (DUTYNAME, DUTYTYPE, LANGUAGE, RISKDUTYID) values (?, ?, ?, ?)
13:27:47,185 INFO  [STDOUT] Hibernate: insert into FACTORRISKDUTY (RISKDUTYID, RISKDUTYFACTORID) values (?, ?)
13:27:47,997 INFO  [STDOUT] Hibernate: insert into FACTORRISKDUTY (RISKDUTYID, RISKDUTYFACTORID) values (?, ?)
13:27:47,997 INFO  [STDOUT] Hibernate: insert into FACTORRISKDUTY (RISKDUTYID, RISKDUTYFACTORID) values (?, ?)
13:27:48,028 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_, riskdutyfa0_.FACTORNAME as FACTORNAME0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_, riskdutyfa0_.VALUE as VALUE0_, riskdutyfa0_.SIGN as SIGN0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.SIGN='0' )
13:27:48,044 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_, riskdutyfa0_.FACTORNAME as FACTORNAME0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_, riskdutyfa0_.VALUE as VALUE0_, riskdutyfa0_.SIGN as SIGN0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.SIGN='0' )
13:27:48,044 INFO  [STDOUT] false
13:27:48,075 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_, riskdutyfa0_.FACTORNAME as FACTORNAME0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_, riskdutyfa0_.VALUE as VALUE0_, riskdutyfa0_.SIGN as SIGN0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.SIGN='1' )
13:27:48,075 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_, riskdutyfa0_.FACTORNAME as FACTORNAME0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_, riskdutyfa0_.VALUE as VALUE0_, riskdutyfa0_.SIGN as SIGN0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where (riskdutyfa0_.SIGN='1' )
13:27:48,091 INFO  [STDOUT] false
13:28:11,263 INFO  [STDOUT] Hibernate: select count(*) as col_0_0_ from XFLIU.RISKDUTY riskduty0_ where (riskduty0_.DUTYNAME='意外死亡' )
13:28:11,279 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_0_, riskdutyfa0_.FACTORNAME as FACTORNAME0_0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_0_, riskdutyfa0_.VALUE as VALUE0_0_, riskdutyfa0_.SIGN as SIGN0_0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where riskdutyfa0_.RISKDUTYFACTORID=?
13:28:11,279 INFO  [RiskDutyServiceImpl] 保险期间       
13:28:11,279 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_0_, riskdutyfa0_.FACTORNAME as FACTORNAME0_0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_0_, riskdutyfa0_.VALUE as VALUE0_0_, riskdutyfa0_.SIGN as SIGN0_0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where riskdutyfa0_.RISKDUTYFACTORID=?
13:28:11,294 INFO  [RiskDutyServiceImpl] 计算方向       
13:28:11,294 INFO  [STDOUT] Hibernate: select riskdutyfa0_.RISKDUTYFACTORID as RISKDUTY1_0_, riskdutyfa0_.FACTORNAME as FACTORNAME0_0_, riskdutyfa0_.FACTORUNIT as FACTORUNIT0_0_, riskdutyfa0_.VALUE as VALUE0_0_, riskdutyfa0_.SIGN as SIGN0_0_, riskdutyfa0_.LANGUAGE as LANGUAGE0_0_ from XFLIU.RISKDUTYFACTOR riskdutyfa0_ where riskdutyfa0_.RISKDUTYFACTORID=?
13:28:11,294 INFO  [RiskDutyServiceImpl] 费率             
13:28:11,294 INFO  [RiskDutyServiceImpl] begin save complexCheck riskDuty
13:28:11,294 INFO  [STDOUT] Hibernate: values nextval for S_RISKDUTY
13:28:11,310 ERROR [RiskDutyDAOImpl] save failed
org.springframework.orm.hibernate3.HibernateSystemException: a different object with the same identifier value was already associated with the session: [com.sleb.po.Riskdutyfactor#5]; nested exception is org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.sleb.po.Riskdutyfactor#5]
org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.sleb.po.Riskdutyfactor#5]
at org.hibernate.engine.PersistenceContext.checkUniqueness(PersistenceContext.java:586)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:254)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:214)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:91)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:468)
at org.hibernate.engine.Cascades$5.cascade(Cascades.java:154)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:771)
at org.hibernate.engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascadeCollection(Cascades.java:895)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:792)
at org.hibernate.engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascade(Cascades.java:847)
at org.hibernate.event.def.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:363)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:265)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:160)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:108)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:184)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:173)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:481)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:476)
at org.springframework.orm.hibernate3.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:615)
at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:365)
at org.springframework.orm.hibernate3.HibernateTemplate.save(HibernateTemplate.java:612)
at com.sleb.dao.base.BaseDao.save(BaseDao.java:100)
at com.sleb.service.riskDuty.spring.RiskDutyServiceImpl.saveRiskduty(RiskDutyServiceImpl.java:56)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:335)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:181)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:148)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:176)
at $Proxy47.saveRiskduty(Unknown Source)
at com.sleb.struts.action.riskDuty.SaveRiskDutyAction.save(SaveRiskDutyAction.java:92)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:280)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:216)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.sleb.util.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:74)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:44)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:169)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)
13:28:11,388 WARN  [RequestProcessor] Unhandled Exception thrown: class org.springframework.orm.hibernate3.HibernateSystemException
13:28:11,435 ERROR [Engine] StandardWrapperValve[action]: Servlet.service() for servlet action threw exception
org.springframework.orm.hibernate3.HibernateSystemException: a different object with the same identifier value was already associated with the session: [com.sleb.po.Riskdutyfactor#5]; nested exception is org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.sleb.po.Riskdutyfactor#5]
org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.sleb.po.Riskdutyfactor#5]
at org.hibernate.engine.PersistenceContext.checkUniqueness(PersistenceContext.java:586)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:254)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:214)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:91)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:468)
at org.hibernate.engine.Cascades$5.cascade(Cascades.java:154)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:771)
at org.hibernate.engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascadeCollection(Cascades.java:895)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:792)
at org.hibernate.engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascade(Cascades.java:847)
at org.hibernate.event.def.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:363)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:265)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:160)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:108)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:184)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:173)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:481)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:476)
at org.springframework.orm.hibernate3.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:615)
at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:365)
at org.springframework.orm.hibernate3.HibernateTemplate.save(HibernateTemplate.java:612)
at com.sleb.dao.base.BaseDao.save(BaseDao.java:100)
at com.sleb.service.riskDuty.spring.RiskDutyServiceImpl.saveRiskduty(RiskDutyServiceImpl.java:56)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:335)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:181)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:148)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:176)
at $Proxy47.saveRiskduty(Unknown Source)
at com.sleb.struts.action.riskDuty.SaveRiskDutyAction.save(SaveRiskDutyAction.java:92)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:280)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:216)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.sleb.util.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:74)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:44)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:169)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)
17 楼 janh 2007-02-17  
可能在
引用
首先查询id为5的User对象 .
Userinfo user = (Userinfo)this.getObject(Userinfo.class, new Long(5))

时是一个session，而在
引用
再执行一个查询
String sql = "select user from User user";
List list = this.getByHqlList(sql);

最后：
user.set***();
this.update();

时是另一个session，可以调试看看是不是同一个session。
16 楼 collin000 2007-02-16  
举个例子：

首先查询id为5的User对象 .
Userinfo user = (Userinfo)this.getObject(Userinfo.class, new Long(5))


再执行一个查询
String sql = "select user from User user";
List list = this.getByHqlList(sql);

最后：
user.set***();
this.update(); 

//居然有问题？？？ 我改成先session.clear()再update，通过！！
//以上是我简化了实际业务的情况，遇到和楼主同样的错！
//难道这样写法不行？？？ 望指教！！！

15 楼 collin000 2007-02-16  
楼主的问题我也遇到过了，把session先clear一下就好了，Allen的方法正解！

楼上说：“一个session中如果关联了或者说缓存了一个对象，当你将另一个相同id的游离对象与该session关联起来时会报那个错误。”

这里有个疑问：为什么会出现“一个相同id的游离对象”。如果取这条数据的持久化对象，不论从session取还是查数据库只有一个，怎么就会出现“一个相同id的游离对象”？
14 楼 janh 2007-02-10  
一个session中如果关联了或者说缓存了一个对象，当get或load该id时，只要该对象没有被evict并且该session没有被clear或close过，那么总是会从缓存中直接取，否则查询数据库。session之间是相互独立的，一个session不会去取另一个session缓存中的对象，另一个session缓存中的对象对它来说是游离对象。

一个session中如果关联了或者说缓存了一个对象，当你将另一个相同id的游离对象与该session关联起来时会报那个错误。
13 楼 liutjedu 2007-02-10  
应该是这个的错的，在执行第一次save()方法的时候，通过getRiskDutyFactorByPk(new Integer(baseChecked[i])));方法取得一个RiskDutyFactor对象，但是session没有及时关闭，等执行第2次的时候，同样取得的是一个RiskDutyFactor对象，虽然说ID是一样的，但是对象已经不一样，才可以报这样的错误。

我现在手头上没有代码了，等回来后，把代码打包，发上来，希望大家能批评一下。
12 楼 janh 2007-02-10  
在getRiskDutyFactorByPk(new Integer(baseChecked[i])));时不应该出现这个错误吧，代码贴了很多，为什么不把出错信息贴全呢
11 楼 liutjedu 2007-02-10  
hi,allen:
对于第一种方法，我忘记试过没有，不过我会尝试下的，但是我试过将清空Session放在save()后做过，结果是没有对数据库进行操作。
也在riskDuty.setDutyname(dutyName);前加过，没有什么效果，执行了，但是还是报同样的错。
merge()也尝试了，不过好象还不太会用。我DAO里的save()是save()方法，不是saveOrUpdate().

可能我那里还是有问题的，春节过后，我把代码整理下，发给你，你帮忙给我看看吧，现在我没有代码，放在公司了，我已经请假回家了！

谢谢！顺便祝看我帖子的人新年快乐！
10 楼 Allen 2007-02-09  
我又想了一下——Set本身的特性决定了里面不存在重复的元素……既然这里你能add()进去，那就是说Set集合是OK的。

先用你注释掉的那行代码在save()动作之前清空Session看看行不行： 
....

this.getRiskDutyFactorDAO().getCurrentSession().clear(); 
this.getRiskDutyDAO().save(riskDuty);

....

又或者尝试一下以merge()方法来完成持久化（这样应该就不会因为cascade="save-update"而触动到关联的集合端）： 
....

//也许可以直接写：this.getRiskDutyFactorDAO().merge(riskDuty); 
this.getRiskDutyFactorDAO().getCurrentSession().merge(riskDuty); 

....

另外问一下，你的DAO里面的save()用的是Session的saveOrUpdate()方法吗？
9 楼 liutjedu 2007-02-09  
to Allen    :
我是多对多的,但是riskdutyfactor表已经有数据了,后再对riskduty进行操作，如果都修改为inverse="true",那没有对象来维护中间表了.
不知道我说的对不对.

你说的代码可读性不好,是因为我注释少,还是我说的不清楚呢?希望能说的直白点,呵呵,学习ING.

对于出错的问题,我知道是这两个String[] baseChecked, String[] complexChecked造成的，但是怎么修改呢?
8 楼 Allen 2007-02-09  
很可能的一点是，你的这两个数组里面存在重复相同的值：String[] baseChecked, String[] complexChecked。这进而导致你的DAO层试图将同样Class类型并且含有同样标识符(identifier)的Riskdutyfactor对象关联到它的Session中去，就直接引发了NonUniqueObjectException。

另外，根据你的这段代码所体现的逻辑关系，建议将这个Set集合也设置inverse="true"。 
        <set name="riskdutyfactors" table="FACTORRISKDUTY" cascade="save-update">   
            <key>   
                <column name="RISKDUTYID" />   
            </key>   
            <many-to-many class="com.sleb.po.Riskdutyfactor" column="RISKDUTYFACTORID" />   
        </set>
7 楼 Allen 2007-02-09  
这个代码的可阅读性需要加强啊！

我觉得你这里出现问题的原因并不在于是否采用merge()方法来持久化PO……

况且你对merge()的用法也是不对的，它的正确用法请参考API文档。

Session.merge() API doc:
http://www.hibernate.org/hib_docs/v3/api/org/hibernate/Session.html#merge(java.lang.Object)
6 楼 liutjedu 2007-02-09   
	public boolean saveRiskduty(String dutyName, String dutyType,
			String[] baseChecked, String[] complexChecked) {		
		riskDuty.setDutyname(dutyName);
		riskDuty.setDutytype(dutyType);
		
		if (baseChecked != null) {
			for (int i = 0; i < baseChecked.length; i++) {
				log.info(this.getRiskDutyFactorByPk(new Integer(baseChecked[i])).getFactorname());
				//首先根据页面上请求的ID，取得RiskDutyFactor对象，后与RiskDuty关联
				this.getRiskDutyFactorDAO().getCurrentSession().merge(this.getRiskDutyFactorByPk(new Integer(baseChecked[i])));
				riskDuty.getRiskdutyfactors().add(this.getRiskDutyFactorByPk(new Integer(baseChecked[i])));				
			}
		}
		if (complexChecked != null) {
			for (int i = 0; i < complexChecked.length; i++) {
				log.info(this.getRiskDutyFactorByPk(new Integer(complexChecked[i])).getFactorname());
				//首先根据页面上请求的ID，取得RiskDutyFactor对象，后与RiskDuty关联
				this.getRiskDutyFactorDAO().getCurrentSession().merge(this.getRiskDutyFactorByPk(new Integer(complexChecked[i])));
				riskDuty.getRiskdutyfactors().add(this.getRiskDutyFactorByPk(new Integer(complexChecked[i])));
			}
		}
		log.info("begin save complexCheck riskDuty");
		this.getRiskDutyDAO().save(riskDuty);

		bl=true;
		//this.getRiskDutyFactorDAO().getCurrentSession().clear();
		
		return bl;
	}


程序增加了两行,但是还是不对,不知道merge怎么用.
5 楼 liutjedu 2007-02-09   
if (baseChecked != null) {    
  for (int i = 0; i < baseChecked.length; i++) {    
   log.info(this.getRiskDutyFactorByPk(new Integer(baseChecked[i])).getFactorname());    
   //首先根据页面上请求的ID，取得RiskDutyFactor对象，后与RiskDuty关联    
   riskDuty.getRiskdutyfactors().add(this.getRiskDutyFactorByPk(new Integer(baseChecked[i])));        
  }    
 }

我在网络上搜到过,但是能不能帮我详细的看下我的代码,应该将你说的meger()方法放在那里?谢谢!
4 楼 Allen 2007-02-09  
关于 NonUniqueObjectException ，请看：

http://www.hibernate.org/116.html#A8

这个异常估计是每一个Hibernate使用者都曾经遇到过的……

这样的帖子建议放到新手区。
3 楼 liutjedu 2007-02-09  
谢谢springArt.
2 楼 SpringArt 2007-02-09  
liutjedu 写道
da大家能看到吗?我怎么看不到啊!奇怪!


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