SSM项目启动报错：Failed to read candidate component class 及解决

SSM项目启动报错：Failed to read candidate component class

之前使用MyEclipse启动SSM框架项目时，没有任何问题。但是换成使用Eclipse Mars等IDE启动项目时，控制台输出错误如下：BeanDefinitionStoreException: Failed to read candidate component class。上述eclipse均使用jdk1.8和tomcat7.0。

4:23:18,899 ERROR ContextLoader:307 - Context initialization failed
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class: file [F:\WorkSpace\J2EE_Workspace_1\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\Taotao\WEB-INF\classes\com\lqr\mapper\TbContentCategoryMapper.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:5099)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5615)
  at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    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)
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
  解决方法如下：
  右击项目，点击properties，把项目的 Java 版本调整到 1.7 ，把动态 Web 的版本调整到 3.0 ，等待eclipse进度走完，就可以正常启动了。   
  ![在这里插入图片描述](https://img-blog.csdnimg.cn/20200708093948432.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1OTY0NTIx,size_16,color_FFFFFF,t_70)