org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component

严重: StandardWrapper.Throwableorg.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class: file [/Users/xxx/Java/tomcat/apache-tomcat-8.5.14/webapps/spseurity-custom-login/WEB-INF/classes/com/spsecurity/web/controller/HelloController.class]; nested exception is org.springframework.core.NestedIOException: ASM ClassReader failed to parse class file - probably due to a new Java class file version that isn't supported yet: file [/Users/xxx/Java/tomcat/apache-tomcat-8.5.14/webapps/spseurity-custom-login/WEB-INF/classes/com/spsecurity/web/controller/HelloController.class]; nested exception is java.lang.IllegalArgumentException    at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.findCandidateComponents(ClassPathScanningCandidateComponentProvider.java:290)    at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:242)    at org.springframework.context.annotation.ComponentScanBeanDefinitionParser.parse(ComponentScanBeanDefinitionParser.java:84)    at org.springframework.beans.factory.xml.NamespaceHandlerSupport.parse(NamespaceHandlerSupport.java:73)    at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1438)    at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1428)    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:195)    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:139)    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:108)    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:493)    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:390)    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)    at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125)    at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94)    at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:130)    at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:537)    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:451)    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:651)    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:602)    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:665)    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:521)    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:462)    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:1183)    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1099)    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:989)    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4931)    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5241)    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)    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: org.springframework.core.NestedIOException: ASM ClassReader failed to parse class file - probably due to a new Java class file version that isn't supported yet: file [/Users/xxx/Java/tomcat/apache-tomcat-8.5.14/webapps/spseurity-custom-login/WEB-INF/classes/com/spsecurity/web/controller/HelloController.class]; nested exception is java.lang.IllegalArgumentException    at org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:56)    at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:80)    at org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader(CachingMetadataReaderFactory.java:102)    at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.findCandidateComponents(ClassPathScanningCandidateComponentProvider.java:266)    ... 39 moreCaused by: 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.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:53)    ... 42 more

报这个错是因为 jdk1.8 与 spring 版本有冲突。有两种解决方案：
第一：降 jdk 版本；
第二：升级 spring 版本，我这里选择了升级 spring 版本，降 spring 版本升级到 4.0 以上即可