最近在学习springmvc--碰到一个特别蛋疼的错误
javax.servlet.ServletException: Servlet.init() for servlet springMVC threw exception org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1074) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2466) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2455) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:745) root cause java.lang.IllegalArgumentException org.springframework.asm.ClassReader.<init>(Unknown Source) org.springframework.asm.ClassReader.<init>(Unknown Source) org.springframework.asm.ClassReader.<init>(Unknown Source) org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:52) org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:80) org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader(CachingMetadataReaderFactory.java:102) org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:76) org.springframework.context.annotation.ConfigurationClassParser.getImports(ConfigurationClassParser.java:298) org.springframework.context.annotation.ConfigurationClassParser.getImports(ConfigurationClassParser.java:300) org.springframework.context.annotation.ConfigurationClassParser.getImports(ConfigurationClassParser.java:300) org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:230) org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:153) org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:130) org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:285) org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:223) org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:630) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:461) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:652) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:600) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:666) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:519) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:460) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1074) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2466) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2455) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:745)
错误原因：
spring3.*不能使用jdk8.0 要保证你的eclipse使用的是1.7，tomcat使用的是1.7
于是我就又安装了一个tomcat7.0，将jre改成了jre1.7
但是还是报错
于是我又安装了一个jdk1.7版本的
我心想这回改好了吧，又报下面错误
Project facet Java version 1.8 is not supported.
最后找到这篇博客解决了
使劲点我呀
