我正在开发一个最近引入lambda表达式的项目。一个例子是这样的。
public class ExampleItemWriter implements ItemWriter<MyItem> {
public void write(List<? extends MyItem> list) throws RepositoryException {
list.stream().forEach((item)->{
if (item == null) {
}
});
}
}
我不相信forEach()
内的细节与问题有关,但如果他们是,我可以发帖。在整个代码中还有一些其他类似的表达式抛出相同的异常。
java.lang.BootstrapMethodError: call site initialization exception
at java.lang.invoke.CallSite.makeSite(CallSite.java:328)
at java.lang.invoke.MethodHandleNatives.linkCallSite(MethodHandleNatives.java:296)
at com.example.repository.batch.ExampleItemWriter.write(ExampleItemWriter.java:83)
at sun.reflect.GeneratedMethodAccessor198.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy93.write(Unknown Source)
at org.springframework.batch.core.step.item.SimpleChunkProcessor.writeItems(SimpleChunkProcessor.java:175)
at org.springframework.batch.core.step.item.SimpleChunkProcessor.doWrite(SimpleChunkProcessor.java:151)
at org.springframework.batch.core.step.item.FaultTolerantChunkProcessor$3.doWithRetry(FaultTolerantChunkProcessor.java:329)
at org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:255)
at org.springframework.retry.support.RetryTemplate.execute(RetryTemplate.java:188)
at org.springframework.batch.core.step.item.BatchRetryTemplate.execute(BatchRetryTemplate.java:217)
at org.springframework.batch.core.step.item.FaultTolerantChunkProcessor.write(FaultTolerantChunkProcessor.java:422)
at org.springframework.batch.core.step.item.SimpleChunkProcessor.process(SimpleChunkProcessor.java:199)
at org.springframework.batch.core.step.item.ChunkOrientedTasklet.execute(ChunkOrientedTasklet.java:75)
at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:395)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133)
at org.springframework.batch.core.step.tasklet.TaskletStep$2.doInChunkContext(TaskletStep.java:267)
at org.springframework.batch.core.scope.context.StepContextRepeatCallback.doInIteration(StepContextRepeatCallback.java:77)
at org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:368)
at org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:215)
at org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:144)
at org.springframework.batch.core.step.tasklet.TaskletStep.doExecute(TaskletStep.java:253)
at org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:195)
at org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:137)
at org.springframework.batch.core.job.flow.JobFlowExecutor.executeStep(JobFlowExecutor.java:64)
at org.springframework.batch.core.job.flow.support.state.StepState.handle(StepState.java:60)
at org.springframework.batch.core.job.flow.support.SimpleFlow.resume(SimpleFlow.java:152)
at org.springframework.batch.core.job.flow.support.SimpleFlow.start(SimpleFlow.java:131)
at org.springframework.batch.core.job.flow.FlowJob.doExecute(FlowJob.java:135)
at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:301)
at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:134)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:127)
at com.example.repository.batch.RunScheduler.run(RunScheduler.java:69)
at com.example.repository.batch.messaging.listener.SourceJobRunner.runSourceJob(SourceJobRunner.java:139)
at com.example.repository.batch.messaging.listener.SourceJobRunner.onMessage(SourceJobRunner.java:94)
at org.springframework.jms.listener.adapter.MessageListenerAdapter.onMessage(MessageListenerAdapter.java:214)
at org.springframework.jms.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:660)
at org.springframework.jms.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:620)
at org.springframework.jms.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:591)
at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.doReceiveAndExecute(AbstractPollingMessageListenerContainer.java:308)
at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.receiveAndExecute(AbstractPollingMessageListenerContainer.java:246)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:1142)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:1134)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:1031)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.VerifyError: (class: com/example/repository/batch/ExampleItemWriter$$Lambda$57, method: accept signature: (Ljava/lang/Object;)V) Illegal use of nonvirtual function call
at sun.misc.Unsafe.defineAnonymousClass(Native Method)
at java.lang.invoke.InnerClassLambdaMetafactory.spinInnerClass(InnerClassLambdaMetafactory.java:324)
at java.lang.invoke.InnerClassLambdaMetafactory.buildCallSite(InnerClassLambdaMetafactory.java:194)
at java.lang.invoke.LambdaMetafactory.metafactory(LambdaMetafactory.java:304)
at java.lang.invoke.CallSite.makeSite(CallSite.java:289)
... 54 more
我们有几个不同的环境运行相同的代码,只有其中一些会抛出此异常。我花了很多时间研究这个问题,最后在这里发布了一些想法。环境看起来像是jdk 1.8.0_31,我们正在使用maven-compiler-plugin 3.2。
我们可能会看到哪些提示?我没有想法。谢谢,/ w
答案 0 :(得分:0)
原因可能是接口被替换为在java 8上编译的版本,其余代码在较低版本上,例如java 5.为此https://bugs.openjdk.java.net/browse/JDK-8004967打开了错误
但是,我不认为这是这种情况,因为您在ExampleItemWriter中使用java8功能,并且您必须在java8上编译它。所以不存在目标不一致的问题。您仍然可以考虑在java8上重建整个项目。
答案 1 :(得分:0)
我将你的write方法复制到另一个类中,用String替换MyItem并使用常规异常。所以,这适用于字符串列表。
所以我认为这与你的forEach()的内容有关,或者 - 上面提到的 - 与版本冲突。