不能用`factory-method`实例化单例

时间：2012-12-22 10:40:15

标签： java xml spring perfectjpattern

我有一段代码工作，集成了Hibernate 3.3.2.GA和Spring 2.5.x，这些版本很旧，所以我决定升级。我首先将Spring升级到最新版本3.2.0.RELEASE，这很有效。实际上，可以使用svn co https://perfectjpattern.svn.sourceforge.net/svnroot/perfectjpattern/trunk perfectjpattern检查具有最新Spring版本的工作项目。尝试升级到Hibernate 4我得到了一个不同的Spring bean行为，这个行为让我望而却步，它显然与Hibernate 4无关。

失败的bean配置如下。使用Hibernate 3的完整工作配置是here（我没有使用Hibernate 4 ofc检查失败的配置）：

<bean id="localDaoFactory" class="org.perfectjpattern.jee.integration.dao.LocalDaoFactory"  
    factory-method="getInstance">
    <property name="sessionStrategy">
        <ref bean="daoSessionStrategy" />
    </property>     
    <property name="transactionStrategy">
        <ref bean="daoTransactionStrategy" />
    </property>         
    <property name="personDao">
        <ref bean="personDao" />
    </property>     
</bean>

并且异常的堆栈跟踪如下所示，这意味着它无法初始化org.perfectjpattern.jee.integration.dao.LocalDaoFactory并且显然它在查找可访问的构造函数时失败但是在此配置中我指定使用工厂方法而不是实例化bean直。这在升级Hibernate之前有效，但之后并没有在同一个Spring（最新）版本中使用，这非常令人困惑。

java.lang.IllegalStateException: Failed to load ApplicationContext
        at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:157)
        at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109)
        at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
        at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:313)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:211)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:288)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:284)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
        at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
        at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
        at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53)
        at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:123)
        at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:104)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164)
        at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110)
        at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:175)
        at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:107)
        at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:68)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'localDaoFactory' defined in URL [file:src/test/resources/test-applicationContext.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class org.perfectjpattern.jee.integration.dao.LocalDaoFactory
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:581)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1029)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:925)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:490)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:607)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
        at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:106)
        at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:57)
        at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:100)
        at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:248)
        at org.springframework.test.context.TestContext.loadApplicationContext(TestContext.java:124)
        at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:148)
        ... 30 more
Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.perfectjpattern.jee.integration.dao.LocalDaoFactory
        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.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:160)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:570)
        ... 47 more

更新：在加载Spring配置时，Spring无法找到类LocalDaoFactory，但它之前没有...

更新：这是运行mvn dependency:tree -Dverbose的结果，并且没有未解决的冲突

[INFO] --- maven-dependency-plugin:2.1:tree (default-cli) @ perfectjpattern-spring ---
[INFO] perfectjpattern:perfectjpattern-spring:jar:1.0.3-SNAPSHOT
[INFO] +- perfectjpattern:perfectjpattern-api:jar:1.0.3-SNAPSHOT:compile
[INFO] +- commons-lang:commons-lang:jar:2.5:compile
[INFO] +- org.springframework:spring-core:jar:3.2.0.RELEASE:compile
[INFO] +- org.springframework:spring-jdbc:jar:3.2.0.RELEASE:compile
[INFO] |  +- (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] |  +- (org.springframework:spring-tx:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] |  \- (org.springframework:spring-beans:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] +- org.springframework:spring-orm:jar:3.2.0.RELEASE:compile
[INFO] |  +- (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] |  +- (org.springframework:spring-jdbc:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] |  +- (org.springframework:spring-tx:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] |  +- aopalliance:aopalliance:jar:1.0:compile
[INFO] |  \- (org.springframework:spring-beans:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] +- org.springframework:spring-tx:jar:3.2.0.RELEASE:compile
[INFO] |  +- (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] |  +- (aopalliance:aopalliance:jar:1.0:compile - omitted for duplicate)
[INFO] |  \- (org.springframework:spring-beans:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] +- org.springframework:spring-aop:jar:3.2.0.RELEASE:compile
[INFO] |  +- (aopalliance:aopalliance:jar:1.0:compile - omitted for duplicate)
[INFO] |  +- (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] |  \- (org.springframework:spring-beans:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] +- org.springframework:spring-context:jar:3.2.0.RELEASE:compile
[INFO] |  +- (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] |  +- (org.springframework:spring-aop:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] |  +- org.springframework:spring-expression:jar:3.2.0.RELEASE:compile
[INFO] |  |  \- (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] |  \- (org.springframework:spring-beans:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] +- org.springframework:spring-context-support:jar:3.2.0.RELEASE:compile
[INFO] |  +- (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] |  +- (org.springframework:spring-context:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] |  \- (org.springframework:spring-beans:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] +- org.springframework:spring-beans:jar:3.2.0.RELEASE:compile
[INFO] |  \- (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] +- commons-logging:commons-logging:jar:1.1.1:test
[INFO] +- org.springframework:spring-test:jar:3.2.0.RELEASE:test
[INFO] |  +- org.springframework:spring-webmvc:jar:3.2.0.RELEASE:test
[INFO] |  |  +- (org.springframework:spring-context:jar:3.2.0.RELEASE:test - omitted for duplicate)
[INFO] |  |  +- (org.springframework:spring-core:jar:3.2.0.RELEASE:test - omitted for duplicate)
[INFO] |  |  +- org.springframework:spring-web:jar:3.2.0.RELEASE:test
[INFO] |  |  |  +- (org.springframework:spring-context:jar:3.2.0.RELEASE:test - omitted for duplicate)
[INFO] |  |  |  +- (org.springframework:spring-core:jar:3.2.0.RELEASE:test - omitted for duplicate)
[INFO] |  |  |  +- (org.springframework:spring-aop:jar:3.2.0.RELEASE:test - omitted for duplicate)
[INFO] |  |  |  +- (aopalliance:aopalliance:jar:1.0:test - omitted for duplicate)
[INFO] |  |  |  \- (org.springframework:spring-beans:jar:3.2.0.RELEASE:test - omitted for duplicate)
[INFO] |  |  +- (org.springframework:spring-expression:jar:3.2.0.RELEASE:test - omitted for duplicate)
[INFO] |  |  \- (org.springframework:spring-beans:jar:3.2.0.RELEASE:test - omitted for duplicate)
[INFO] |  \- (org.springframework:spring-core:jar:3.2.0.RELEASE:test - omitted for duplicate)
[INFO] +- perfectjpattern:perfectjpattern-testcommon:jar:1.0.3-SNAPSHOT:test
[INFO] |  +- junit:junit:jar:4.8.1:test
[INFO] |  +- org.slf4j:slf4j-log4j12:jar:1.7.2:test
[INFO] |  |  +- org.slf4j:slf4j-api:jar:1.7.2:test
[INFO] |  |  \- log4j:log4j:jar:1.2.17:test
[INFO] |  \- org.easymock:easymock:jar:2.5.2:test
[INFO] +- org.hsqldb:hsqldb:jar:2.2.9:test
[INFO] \- perfectjpattern:perfectjpattern-hibernate:jar:1.0.3-SNAPSHOT:test
[INFO]    +- perfectjpattern:perfectjpattern-jee:jar:1.0.3-SNAPSHOT:test
[INFO]    |  +- perfectjpattern:perfectjpattern-core:jar:1.0.3-SNAPSHOT:test
[INFO]    |  |  +- (perfectjpattern:perfectjpattern-api:jar:1.0.3-SNAPSHOT:test - omitted for duplicate)
[INFO]    |  |  +- (org.slf4j:slf4j-api:jar:1.7.2:test - omitted for duplicate)
[INFO]    |  |  \- (commons-lang:commons-lang:jar:2.5:test - omitted for duplicate)
[INFO]    |  +- org.apache.geronimo.specs:geronimo-ejb_3.0_spec:jar:1.0.1:test
[INFO]    |  +- org.apache.geronimo.specs:geronimo-jpa_3.0_spec:jar:1.1.1:test
[INFO]    |  \- org.apache.geronimo.specs:geronimo-jta_1.1_spec:jar:1.1.1:test
[INFO]    +- javassist:javassist:jar:3.8.0.GA:test
[INFO]    +- commons-collections:commons-collections:jar:3.2.1:test
[INFO]    \- org.hibernate:hibernate-core:jar:4.1.9.Final:test
[INFO]       +- antlr:antlr:jar:2.7.7:test
[INFO]       +- org.jboss.logging:jboss-logging:jar:3.1.0.GA:test
[INFO]       +- org.javassist:javassist:jar:3.17.1-GA:test
[INFO]       +- org.jboss.spec.javax.transaction:jboss-transaction-api_1.1_spec:jar:1.0.0.Final:test
[INFO]       +- dom4j:dom4j:jar:1.6.1:test
[INFO]       +- org.hibernate.javax.persistence:hibernate-jpa-2.0-api:jar:1.0.1.Final:test
[INFO]       \- org.hibernate.common:hibernate-commons-annotations:jar:4.0.1.Final:test
[INFO]          \- (org.jboss.logging:jboss-logging:jar:3.1.0.CR2:test - omitted for conflict with 3.1.0.GA)

1 个答案:

答案 0 :(得分：2)

消息Could not initialize class org.perfectjpattern.jee.integration.dao.LocalDaoFactory表示JVM无法使用此名称静态初始化类。

我查看了source of this class及其超类HibernateDaoFactory和AbstractDaoFactory。 LocalDaoFactory和HibernateDaoFactory完成的唯一静态初始化是创建每个类的单个实例，并将其存储在名为private static final的{​​{1}}字段中。因此，实例化这些单身一定存在问题。

LocalDaoFactory没有自己的构造函数，而AbstractDaoFactory的构造函数只使用标准Java类和它们在同一个包中。 HibernateDaoFactory的构造函数更有趣，因为它创建了HibernateCurrentSessionStrategy和HibernateConfiguredTransactionStrategy。代码本身看起来并不是特别有问题，所以看起来这个代码试图实例化的一些类很可能会丢失。

我在PerfectJPattern之外的代码上看到的唯一依赖是：

  • Hibernate Core，
  • Apache Commons Lang。

我将假设你确实拥有相关的Hibernate核心JAR，因此责备指责Apache Commons Lang。

Apache Commons Lang website提到commons-lang版本3使用与早期版本的commons-lang不同的包。鉴于你的项目在升级到Hibernate 4之前工作但现在不起作用，我猜想升级到Hibernate 4会替换commons-lang 2.6或更早版本的commons-lang 3或更高版本，而问题出现是因为PerfectJPattern有对commons-lang 2的依赖。

编辑：看起来你的项目确实包含了commons-lang v2.5，所以缺少这个似乎不是问题。带有消息INSTANCE的{​​{1}}表示JVM已经尝试过并且未能加载类至少两次 - 如果您在失败时可以获取异常消息第一次，这可能会帮助你更多。我担心所有我真正建议的是在调试器下启动你的项目，该调试器已被设置为在例外情况下中断。

相关问题
最新问题