我正在尝试为我的 Spring Batch 作业组件编写单元测试，并向我的处理器声明。根据我在网上找到的所有信息，我做对了。但是当我尝试将它 Autowiring 到我的测试类中时，Spring 找不到我的处理器 bean。
我的处理器类的名称是 BatchFileRecordProcessor。我的测试类是 BatchFileRecordProcessorTest。这是后者的代码:
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:/launch-context.xml"})
@TestExecutionListeners({DependencyInjectionTestExecutionListener.class, StepScopeTestExecutionListener.class})
public class BatchFileRecordProcessorTest
{
@Autowired
private BatchFileRecordProcessor processor = new BatchFileRecordProcessor();
@Inject
private BatchFileRecord batchFileRecord;
public StepExecution getStepExecution()
{
StepExecution stepExecution = MetaDataInstanceFactory.createStepExecution();
stepExecution.getExecutionContext().putString("fileName", "part-r-00000");
return stepExecution;
}
@Test
public void process() throws Exception
{
batchFileRecord.setSomeField("someValue");
batchFileRecord.setSomeOtherField("someOtherValue");
List<SetIdentityLinkInput> inputs = processor.process(batchFileRecord);
assertEquals(1, inputs.size());
}
}
这是我的 launch-context.xml 文件，我所有的 Spring 配置都位于此:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:batch="http://www.springframework.org/schema/batch"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch-2.1.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="com.mobile.identity.batch" />
<batch:job id="IdentitySojournerLogsBatch">
<batch:validator ref="jobParametersValidator" />
<batch:step id="batchJob.master">
<batch:partition step="batchJob" partitioner="partitioner">
<batch:handler grid-size="20" task-executor="partitionTaskExecutor" />
</batch:partition>
</batch:step>
<batch:listeners>
<batch:listener ref="jobListener"/>
</batch:listeners>
</batch:job>
<bean id="partitioner" class="org.springframework.batch.core.partition.support.MultiResourcePartitioner" scope="step">
<property name="resources" value="#{jobParameters['input.file.dir']}" />
</bean>
<bean id="partitionTaskExecutor" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
<property name="maxPoolSize" value="20" />
<property name="corePoolSize" value="10" />
<property name="queueCapacity" value="80" />
<property name="WaitForTasksToCompleteOnShutdown" value="true" />
</bean>
<batch:step id="batchJob">
<batch:tasklet>
<batch:chunk reader="logFileReader" processor="batchFileRecordProcessor" writer="setIdentityLinkWriter" commit-interval="10" />
<batch:listeners>
<batch:listener ref="fileNameListener" />
<batch:listener ref="logFileReaderListener" />
</batch:listeners>
</batch:tasklet>
</batch:step>
<bean id="logFileReaderParent" class="org.springframework.batch.item.file.FlatFileItemReader" abstract="true">
<property name="lineMapper">
<bean class="org.springframework.batch.item.file.mapping.DefaultLineMapper">
<property name="lineTokenizer">
<bean class="com.mobile.identity.batch.components.AmpersandDelimitedNameValuePairTokenizer">
<property name="names" value="isErrorRecord,deviceId,provider,deviceType,operatingSystem,operatingSystemVersion,idfaTag,timestamp,identifierCount,identifierString" />
</bean>
</property>
<property name="fieldSetMapper">
<bean class="org.springframework.batch.item.file.mapping.BeanWrapperFieldSetMapper">
<property name="prototypeBeanName" value="batchFileRecord" />
</bean>
</property>
</bean>
</property>
</bean>
<bean id="logFileReader" scope="step" autowire-candidate="false" parent="logFileReaderParent">
<property name="resource" value="#{stepExecutionContext[fileName]}" />
</bean>
<bean id="batchFileRecordProcessor" class="com.mobile.identity.batch.components.BatchFileRecordProcessor" autowire-candidate="true" scope="step" />
<bean id="batchFileRecord" class="com.mobile.identity.batch.model.BatchFileRecord" scope="prototype" />
</beans>
这是我尝试运行测试类时遇到的异常:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.mobile.identity.batch.components.BatchFileRecordProcessorTest': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.mobile.identity.batch.components.BatchFileRecordProcessor com.mobile.identity.batch.components.BatchFileRecordProcessorTest.processor; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.mobile.identity.batch.components.BatchFileRecordProcessor] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:374)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:110)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:321)
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:290)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
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$2.evaluate(ParentRunner.java:184)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:74)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:202)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.mobile.identity.batch.components.BatchFileRecordProcessor com.mobile.identity.batch.components.BatchFileRecordProcessorTest.processor; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.mobile.identity.batch.components.BatchFileRecordProcessor] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:506)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:284)
... 29 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.mobile.identity.batch.components.BatchFileRecordProcessor] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:924)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:793)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:707)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:478)
... 31 more
2014/04/08 22-13-59,938:ERR:ERROR[Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@569cc9e9] to prepare test instance [com.mobile.identity.batch.components.BatchFileRecordProcessorTest@4f8c0c6b]]
[org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues threw org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.mobile.identity.batch.components.BatchFileRecordProcessorTest': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.mobile.identity.batch.components.BatchFileRecordProcessor com.mobile.identity.batch.components.BatchFileRecordProcessorTest.processor; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.mobile.identity.batch.components.BatchFileRecordProcessor] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}]
尝试运行单元测试时，我尝试在 IntelliJ 的调试器中逐步执行 Spring 代码； Spring 似乎在 launch-context.xml 中找到我的 batchFileRecordProcessor bean 定义，但出于某种原因，它并没有确定它是我测试类中依赖项的合适 Autowiring 候选者。我尝试将 'autowire-candidate="true"' 属性添加到 launch-context.xml 中的 batchFileRecordProcessor bean 定义，但这并没有改变输出。在这一点上有点难过。
编辑:感谢您的回复。对 BatchFileRecordProcessor 构造函数的调用是一个错误，是我在尝试不涉及依赖项注入(inject)的替代方法时遗留下来的。
这是 BatchFileRecordProcessor 类定义:我删除了所有(我假设)与此问题无关的业务逻辑方法:
/**
*
*/
@Component("batchFileRecordProcessor")
@Scope("step")
public class BatchFileRecordProcessor implements ItemProcessor<BatchFileRecord, List<SetIdentityLinkInput>>
{
/**
*/
@Override
public List<SetIdentityLinkInput> process(BatchFileRecord record) throws Exception
{
...Bunch of stuff...
}
/**
*
* @param fileName
*/
@Value("#{stepExecutionContext[fileName]}")
public void setFileName(String fileName)
{
this.fileName = jobUtils.getFileNameFromFullPath(fileName);
}
}
请注意，我确实有一种方法可以注入(inject)步骤执行参数；不确定这是否相关。
我尝试按照建议添加嵌套的 aop:scoped-proxy 标记，但现在出现了不同的异常:
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:321)
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:290)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
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$2.evaluate(ParentRunner.java:184)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:74)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:202)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'batchFileRecordProcessor' defined in BeanDefinition defined in class path resource [launch-context.xml]: Initialization of bean failed; nested exception is org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class com.sun.proxy.$Proxy22]: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: Cannot subclass final class class com.sun.proxy.$Proxy22
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:103)
at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:1)
at org.springframework.test.context.support.DelegatingSmartContextLoader.loadContext(DelegatingSmartContextLoader.java:228)
at org.springframework.test.context.TestContext.loadApplicationContext(TestContext.java:124)
at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:148)
... 27 more
Caused by: org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class com.sun.proxy.$Proxy22]: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: Cannot subclass final class class com.sun.proxy.$Proxy22
at org.springframework.aop.framework.Cglib2AopProxy.getProxy(Cglib2AopProxy.java:213)
at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:112)
at org.springframework.aop.scope.ScopedProxyFactoryBean.setBeanFactory(ScopedProxyFactoryBean.java:109)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1475)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1443)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
... 40 more
Caused by: java.lang.IllegalArgumentException: Cannot subclass final class class com.sun.proxy.$Proxy22
at net.sf.cglib.proxy.Enhancer.generateClass(Enhancer.java:446)
at net.sf.cglib.transform.TransformingClassGenerator.generateClass(TransformingClassGenerator.java:33)
at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:377)
at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:285)
at org.springframework.aop.framework.Cglib2AopProxy.getProxy(Cglib2AopProxy.java:201)
... 45 more
2014/04/09 09-46-30,053:ERR:ERROR[Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@aa0399b] to prepare test instance [com.mobile.identity.batch.components.BatchFileRecordProcessorTest@1d25f490]]
[org.springframework.test.context.TestContext.getApplicationContext threw java.lang.IllegalStateException: Failed to load ApplicationContext]
最佳答案
这有点晚了，但不是 @Autowired，试试这个注解:
@Resource(name="batchFileRecordProcessor")
这将明确指示 Spring 将该 bean 连接到您的类。从那里，您应该从 Spring 收到一条关于为什么它不喜欢预期的 bean 的错误消息。
在我的例子中，我遇到了这样的错误:
Caused by: org.springframework.beans.factory.BeanNotOfRequiredTypeException:
Bean named 'applicationEnrichmentProcessor' must be of type [com.xxxx.YyyyProcessor],
but was actually of type [com.sun.proxy.$Proxy24]
看完Fixing BeanNotOfRequiredTypeException on Spring proxy cast on a non-singleton bean?和 this Spring forum post ，我发现通过添加此注释解决了问题:
@EnableAspectJAutoProxy(proxyTargetClass=true)
这会导致 Spring 的代理机制代理您的类，而不是类的接口(interface)，如 Spring documentation 中所述。 .
由于您的 BatchFileRecordProcessor 实现了一个 ItemProcessor 接口(interface)，我怀疑这也是您的问题。
关于java - 尝试编写 Spring Batch 单元测试时出现 NoSuchBeanDefinitionException，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22953776/