项目重启之后重启的时候突然就报错启动不起来了
![严重: The required Server component failed to start so Tomcat is unable to start. org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:960) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:261) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.startup.Catalina.start(Catalina.java:682) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492) Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:951) ... 13 more Caused by: org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:960) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1429) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:944) ... 13 more Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/server]] at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:951) ... 21 more Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/server]] at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:441) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1429) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:944) ... 21 more Caused by: java.lang.NoClassDefFoundError: org/springframework/core/io/Resource at java.lang.Class.getDeclaredFields0(Native Method) at java.lang.Class.privateGetDeclaredFields(Class.java:2583) at java.lang.Class.getDeclaredFields(Class.java:1916) at org.apache.catalina.util.Introspection.getDeclaredFields(Introspection.java:110) at org.apache.catalina.startup.WebAnnotationSet.loadFieldsAnnotation(WebAnnotationSet.java:269) at org.apache.catalina.startup.WebAnnotationSet.loadApplicationListenerAnnotations(WebAnnotationSet.java:89) at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:67) at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:328) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:768) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5007) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ... 27 more Caused by: java.lang.ClassNotFoundException: org.springframework.core.io.Resource at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1309) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1138) ... 40 more](https://img-blog.csdnimg.cn/20190117112856236.PNG?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2NTA5NjYy,size_16,color_FFFFFF,t_70)
还报了一些什么class interface。。。字符找不到的问题
第一反应是觉得少jar包或者jar包出问题了 然后找到本地的spring-beans的jar包删除了又maven install了 重启之后发现还是不行
接着就去百度了。。。。
发现是项目配置里少配置了 他根本就没找到那些jar包
右键项目-->properties-->deployment assembly-->add-->Java Bulid Path Entries-->找到 Maven Dependencies --->finish 就OK啦
