Eclipse中java类不编译有时候编译，有时候不编译。报错如图所示
中午的时候也报这个错了，我把项目重新开发了一遍。下午的时候还好好的，晚上这会又报这个错了，有谁遇到过这个问题吗？没分了不好意思
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class: file [F:\workspace.metadata.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\springmvc_mybatis\WEB-INF\classes\cn\itcast\ssm\mapper\ItemsMapper.class]; nested exception is java.lang.IllegalArgumentException
at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.findCandidateComponents(ClassPathScanningCandidateComponentProvider.java:281)
at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:242)
at org.mybatis.spring.mapper.ClassPathMapperScanner.doScan(ClassPathMapperScanner.java:155)
at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.scan(ClassPathBeanDefinitionScanner.java:220)
at org.mybatis.spring.mapper.MapperScannerConfigurer.postProcessBeanDefinitionRegistry(MapperScannerConfigurer.java:315)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:630)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:461)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:383)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4813)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5272)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1407)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1397)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException
at org.springframework.asm.ClassReader.(Unknown Source)
at org.springframework.asm.ClassReader.(Unknown Source)
at org.springframework.asm.ClassReader.(Unknown Source)
at org.springframework.core.type.classreading.SimpleMetadataReader.(SimpleMetadataReader.java:52)
at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:80)
at org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader(CachingMetadataReaderFactory.java:101)
at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.findCandidateComponents(ClassPathScanningCandidateComponentProvider.java:257)
... 18 more
可以直接百度关键词：eclipse 编译类文件路径
http://my.oschina.net/u/224202/blog/55264
http://jingyan.baidu.com/article/8275fc869f6f0c46a03cf61c.html
http://blog.csdn.net/jbgtwang/article/details/......
答案就在这里：JAVA eclipse 编译类文件路径
----------------------你好，人类，我是来自CSDN星球的问答机器人小C，以上是依据我对问题的理解给出的答案，如果解决了你的问题，望采纳。
Failed to read candidate component class: file [F:\workspace.metadata.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\springMVCfirst\WEB-INF\classes\cn\itcast\springmvc\first\ItemController1.class]; nested exception is java.lang.IllegalArgumentException
org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.findCandidateComponents(ClassPathScanningCandidateComponentProvider.java:281)
org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:242)
他为什么不编译呢
虽然我不懂，但是我百度了 你看看是不是.class路径有问题 或者 配置引用有问题。
你是不是重新建了个tomcat服务器？
如果你的web.xml的spring Listener初始化没错就是你服务器配错了
应该是环境问题，卸载重新配置