报错找不到java.lang.NoClassDefFoundError: org/springframework/context/ApplicationContextAware
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ssm的maven项目启动报错信息如下:
严重: Error configuring application listener of class com.liu.listener.InitBloggerData java.lang.NoClassDefFoundError: org/springframework/context/ApplicationContextAware at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:3118) at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:1340) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1827) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1701) at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:504) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:486) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:113) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4984) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5584) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1572) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1562) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.ClassNotFoundException: org.springframework.context.ApplicationContextAware at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1858) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1701) ... 19 more 四月 10, 2019 10:37:14 上午 org.apache.catalina.core.StandardContext listenerStart 严重: Error configuring application listener of class org.springframework.web.context.ContextLoaderListener java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1858) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1701) at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:504) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:486) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:113) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4984) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5584) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1572) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1562) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source)
值摘取关键错误信息
java.lang.NoClassDefFoundError: org/springframework/context/ApplicationContextAware
Caused by: java.lang.ClassNotFoundException: org.springframework.context.ApplicationContextAware
java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener
找出关键错误信息是最后一句(红色标注),分析原因,应该是没有正确加载spring的配置文件吧
1.查看web.xml
2.检查路径没有问题,
3.查看本地仓库(那是不是jar没有加载成呢)
那么明明没有问题,项目也没有报错,为啥启动tomcat会找不到该jar呢
查看tomcat(maven里的jar没有发布到tomcat的lib里)
原来如此,仓库里的jar根本没有添加到tomcat的lib里面
解决方法,添加maven依赖
选中项目右键-properties-输入de找到Deployment Assembly,点击add按钮
弹框,点击java build path entries,点击next按钮
点击maven dependencies,点击finish按钮
看已经加入了,点击apply,ok按钮
重新发布项目,tomcat启动成功。查看tomcat里的项目lib文件,里面已经有了所有的jar
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