多对多关系的时候，报错了

wind_rosebush 2009-03-19 06:13:44
报错:
Exception in thread "main" org.springframework.orm.hibernate3.HibernateSystemException: illegal access to loading collection; nested exception is org.hibernate.LazyInitializationException: illegal access to loading collection
Caused by: org.hibernate.LazyInitializationException: illegal access to loading collection
at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:341)
at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
at org.hibernate.collection.PersistentSet.hashCode(PersistentSet.java:411)
at wind.rose.crm.entity.Product.hashCode(Product.java:74)
at java.util.HashMap.put(HashMap.java:372)
at java.util.HashSet.add(HashSet.java:200)
at java.util.AbstractCollection.addAll(AbstractCollection.java:305)
at org.hibernate.collection.PersistentSet.endRead(PersistentSet.java:329)
at org.hibernate.engine.CollectionLoadContext.endLoadingCollection(CollectionLoadContext.java:183)
at org.hibernate.engine.CollectionLoadContext.endLoadingCollections(CollectionLoadContext.java:268)
at org.hibernate.engine.CollectionLoadContext.endLoadingCollections(CollectionLoadContext.java:249)
at org.hibernate.loader.Loader.endCollectionLoad(Loader.java:866)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:853)
at org.hibernate.loader.Loader.doQuery(Loader.java:717)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.loadCollection(Loader.java:1985)
at org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:36)
at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:565)
at org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:60)
at org.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:1716)
at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:344)
at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
at org.hibernate.collection.PersistentSet.hashCode(PersistentSet.java:411)
at wind.rose.crm.entity.Order.hashCode(Order.java:79)
at java.util.HashMap.put(HashMap.java:372)
at java.util.HashSet.add(HashSet.java:200)
at java.util.AbstractCollection.addAll(AbstractCollection.java:305)
at org.hibernate.collection.PersistentSet.endRead(PersistentSet.java:329)
at org.hibernate.engine.CollectionLoadContext.endLoadingCollection(CollectionLoadContext.java:183)
at org.hibernate.engine.CollectionLoadContext.endLoadingCollections(CollectionLoadContext.java:268)
at org.hibernate.engine.CollectionLoadContext.endLoadingCollections(CollectionLoadContext.java:249)
at org.hibernate.loader.Loader.endCollectionLoad(Loader.java:866)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:853)
at org.hibernate.loader.Loader.doQuery(Loader.java:717)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.loadCollection(Loader.java:1985)
at org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:36)
at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:565)
at org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:60)
at org.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:1716)
at org.hibernate.collection.AbstractPersistentCollection.forceInitialization(AbstractPersistentCollection.java:454)
at org.hibernate.engine.StatefulPersistenceContext.initializeNonLazyCollections(StatefulPersistenceContext.java:755)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:229)
at org.hibernate.loader.Loader.doList(Loader.java:2211)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2095)
at org.hibernate.loader.Loader.list(Loader.java:2090)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:388)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at org.springframework.orm.hibernate3.HibernateTemplate$30.doInHibernate(HibernateTemplate.java:857)
at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:366)
at org.springframework.orm.hibernate3.HibernateTemplate.findByNamedParam(HibernateTemplate.java:848)
at org.springframework.orm.hibernate3.HibernateTemplate.findByNamedParam(HibernateTemplate.java:839)
at wind.rose.crm.customer.persist.impl.OrderDaoImpl.findProductByName(OrderDaoImpl.java:27)
at wind.rose.crm.customer.service.impl.OrderServiceImpl.findByProductName(OrderServiceImpl.java:42)
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 org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:288)
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:100)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:176)
at $Proxy10.findByProductName(Unknown Source)
at test.Test.main(Test.java:54)
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penweizgx002 2011-03-20
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在配置文件中加入 access="field"试一试
wind_rosebush 2009-03-19
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第一次插入数据库里面了，第二次再插就报了上面的错误
wind_rosebush 2009-03-19
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test.java


package test;

import wind.rose.crm.entity.*;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;



import wind.rose.crm.customer.service.CustomerService;

import wind.rose.crm.customer.service.OrderService;

import wind.rose.crm.customer.service.ProductService;

import wind.rose.crm.customer.service.UserService;

import wind.rose.crm.entity.Customer;

import wind.rose.crm.entity.User;

import java.util.*;

public class Test {



	public static void main(String[] args) {







		ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");

		OrderService orderService = (OrderService) ac.getBean("orderService");

		Product p = orderService.findByProductName("pg");

		

		Order order = new Order();

		Customer c = orderService.findCustomerByName("苹果");

		order.setCustomer(c);

		p.getOrders().add(order);

		orderService.updateProduct(p);

		



		

		



	}

}
wind_rosebush 2009-03-19
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Order.hbm.xml


<?xml version="1.0" encoding="utf-8"?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping package="wind.rose.crm.entity">

	<class name="Order" table="crm_order">

		<id column="id" name="id" type="long">

			<generator class="native"></generator>

		</id>

		<property name="order_total_price" column="order_total_price" type="double"></property>

		<property name="order_status" column="order_status" type="string"></property>

		<property name="send_goods_addr" column="send_goods_addr" type="string"></property>

		<property name="phone_no" column="phone_no" type="string"></property>

		<property name="payment_type" column="payment_type" type="string"></property>

		<property name="order_note" column="order_note" type="string"></property>

		<many-to-one name="customer" class="Customer" column="customer_id" unique="true"></many-to-one>

		<set name="products" cascade="save-update" inverse="true" table="order_product"  lazy="true">

			<key column="order_id"></key>

			<many-to-many column="product_id" class="Product"></many-to-many>

		</set> 

	</class>

</hibernate-mapping>

Product.hbm.xml


<?xml version="1.0" encoding="utf-8"?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping package="wind.rose.crm.entity">

	<class name="Product" table="crm_product">

		<id column="id" name="id" type="long">

			<generator class="native"></generator>

		</id>

		<property name="product_name" column="product_name" type="string"></property>

		<property name="product_type" column="product_type" type="string"></property>

		<property name="product_base_price" column="product_base_price" type="double"></property>

		<property name="product_status" column="product_status" type="string"></property>

		<property name="product_note" column="product_note" type="string"></property>

		<set name="orders" table="order_product" cascade="save-update"  fetch="join" lazy="false">

			<key column="product_id"></key>

			<many-to-many column="order_id" class="Order"></many-to-many>

		</set>

	</class>

</hibernate-mapping>

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