Failed to create ThreadPoolExecutor from Spring Application Context

Question

I get an IllegalArgumentException when creating a ThreadPoolExecutor as follows.

<bean id="processorQueue" class="java.util.concurrent.LinkedBlockingDeque"/> <bean id="processorThreadPool" class="java.util.concurrent.ThreadPoolExecutor"> <constructor-arg index="0" type="int" value="10"/> <constructor-arg index="1" type="int" value="20"/> <constructor-arg type="long" value="1"/> <constructor-arg> <value type="java.util.concurrent.TimeUnit">MINUTES</value> </constructor-arg> <constructor-arg ref="processorQueue"/> </bean> 

What am I doing wrong? (I am using Spring 3.2 with Java 8)

This is a stack trace.

 2015-08-10 14:20:14 DefaultListableBeanFactory doGetBean [http-nio-8080-exec-37] DEBUG: Returning cached instance of singleton bean 'processorQueue' 2015-08-10 14:20:14 DispatcherServlet initServletBean [http-nio-8080-exec-37] ERROR: Context initialization failed java.lang.IllegalArgumentException at org.springframework.asm.ClassReader.<init>(Unknown Source) at org.springframework.asm.ClassReader.<init>(Unknown Source) at org.springframework.asm.ClassReader.<init>(Unknown Source) at org.springframework.core.LocalVariableTableParameterNameDiscoverer.inspectClass(LocalVariableTableParameterNameDiscoverer.java:110) at org.springframework.core.LocalVariableTableParameterNameDiscoverer.getParameterNames(LocalVariableTableParameterNameDiscoverer.java:85) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:193) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1051) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:955) 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:626) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479) at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:651) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:599) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:665) at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:518) at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:459) at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) at javax.servlet.GenericServlet.init(GenericServlet.java:158) at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1241) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1154) at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:827) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:135) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:74) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:526) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1017) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:652) at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1575) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1533) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 

I tried passing the same value to corePoolSize and maximumPoolSize, but the result is the same.

Answer 1

From JavaDoc (1.8), I can see the following:

 @throws IllegalArgumentException if one of the following holds:<br> {@code corePoolSize < 0}<br> {@code keepAliveTime < 0}<br> {@code maximumPoolSize <= 0}<br> {@code maximumPoolSize < corePoolSize} 

I added your excerpt to one of my applications, and it worked fine if I did not change the settings to violate one of the above conditions and, therefore, force an IllegalArgumentException. The order of the parameters is the same as Java 1.5, so your configuration should work. Can you provide a stack trace at application startup?

Answer 2

you did not specify your class path setting, but it looks like you are using java 8 with spring 3.2, which does not support it. update spring to 4.0