could not initialize proxy - no Session

[xiajunsuc]

08:37:15,203 ERROR LazyInitializationException:19 - could not initialize proxy - no Session
org.hibernate.LazyInitializationException: could not initialize proxy - no Session
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:57)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:150)
at com.bjsxt.oa.model.Orgnization$$EnhancerByCGLIB$$8b056ba1.getParent(<generated>)
at com.bjsxt.oa.web.actions.OrgAction.execute(OrgAction.java:64)
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:597)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:404)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:267)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:229)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:221)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)


package com.bjsxt.oa.model;
import java.util.Set;
public class Orgnization {
private int id;
private String name;
private String sn;
private String description;
private Orgnization parent;
private Set children;
.....
}

hibernate-mapping>
<class table="t_orgnization" name="com.bjsxt.oa.model.Orgnization">
<id name="id">
<generator class="native"/>
</id>
<property name="name"/>
<property name="sn"/>
<property name="description"/>

<many-to-one column="pid" name="parent" />
<set lazy="false" inverse="true" name="children">
<key column="pid"/>
<one-to-many class="com.bjsxt.oa.model.Orgnization" />
</set>
</class>
</hibernate-mapping>



if(parentId != 0){
Orgnization org = orgManager.findOrg(parentId);
Orgnization parent = org.getParent();（执行这句开始出错）
if(parent != null){
ppid = parent.getId();
}
}
request.put("ppid", ppid);

[codolio]

依楼主的异常看，还应该是延迟加载的问题。Hibernate在默认情况下对集合、依赖的对象等会进行延迟加载。Orgnization org = orgManager.findOrg(parentId);在获取org对象后，与之关联的session关闭，（不过现在看不出是何原因）。Orgnization parent = org.getParent();在试图获取parent时，因与之关联的session关闭，导致无法延迟加载parent对象。
建议楼主先将<many-to-one/>的lazy属性设置为false，再看看会出现什么状况。

[Jay_xiaolei]

将lazy设置为false

[hoojo]

开延迟加载就添加这个过滤器，否则是不需要用过滤器的
[Quote=引用 2 楼 ycnanevol 的回复:]
在web.xml里配置opensessionInViewFilter

XML code

<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSession……
[/Quote]

[killercwf1]

<!-- 解决懒加载关闭session问题 -->
<filter>
<filter-name>openSessionInView</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
<init-param>
<param-name>sessionFactoryBeanName</param-name>
<param-value>sessionFactory</param-value>
</init-param>
</filter>

[ycnanevol]

[Quote=引用 3 楼 xiajunsuc 的回复:]

我在web.xml里配置opensessionInViewFilter了，也不行
[/Quote]

你可用了spring？

[ycnanevol]

实在不行，你就把关联的对象一并查出来呗..

[xiajunsuc]

用了spring

[xiajunsuc]

那位大哥会呀

[ycnanevol]

在web.xml里配置opensessionInViewFilter

	<filter>
		<filter-name>OpenSessionInViewFilter</filter-name>
		<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
		<init-param>
			<param-name>flushMode</param-name>
			<param-value>AUTO</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>OpenSessionInViewFilter</filter-name>
		<servlet-name>action</servlet-name>
	</filter-mapping>

[xiajunsuc]

我在web.xml里配置opensessionInViewFilter了，也不行

[redlotus_lyn]

该SQL即可：

from A表 a left join fetch a.Orgnization对象在A表中变量名

[xiajunsuc]

有人会吗

[ycnanevol]

把你的web.xml配置发一遍