org.springframework.beans.factory.BeanDefin…

最近开发项目启动服务器后报错

org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [com.naarchi.microdecoration.serviceImpl.AdminServiceImpl] for bean with name 'adminServiceImpl' defined in file [C:\software\tomcat\apache-tomcat-7.0.68\webapps\my-decoration\WEB-INF\classes\com\naarchi\microdecoration\serviceImpl\AdminServiceImpl.class]: problem with class file or dependent class; nested exception is Java.lang.UnsupportedClassVersionError: com/naarchi/microdecoration/serviceImpl/AdminServiceImpl : Unsupported major.minor version 52.0 (unable to load class com.naarchi.microdecoration.serviceImpl.AdminServiceImpl)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1355)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:628)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:597)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1445)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:975)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:752)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5068)
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$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.UnsupportedClassVersionError: com/naarchi/microdecoration/serviceImpl/AdminServiceImpl : Unsupported major.minor version 52.0 (unable to load class com.naarchi.microdecoration.serviceImpl.AdminServiceImpl)
at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:3122)
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.springframework.util.ClassUtils.forName(ClassUtils.java:250)
at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:394)
at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1397)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1344)
... 20 more
七月 21, 2016 3:59:23 下午 org.apache.catalina.core.StandardContext listenerStart
SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [com.naarchi.microdecoration.serviceImpl.AdminServiceImpl] for bean with name 'adminServiceImpl' defined in file [C:\software\tomcat\apache-tomcat-7.0.68\webapps\my-decoration\WEB-INF\classes\com\naarchi\microdecoration\serviceImpl\AdminServiceImpl.class]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: com/naarchi/microdecoration/serviceImpl/AdminServiceImpl : Unsupported major.minor version 52.0 (unable to load class com.naarchi.microdecoration.serviceImpl.AdminServiceImpl)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1355)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:628)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:597)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1445)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:975)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:752)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5068)
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$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

后面太长不粘贴了，网上搜索了一下相关解决方案基本都说是什么编译生成的.class文件出了问题，什么手动删除重新编译之类的。但是问题仍然不能解决而且个人也觉得不应该是这种问题。

后来访问了一大堆一大堆国内的国外的网站有个小网站上的一个帖子一下子提醒了我，由于个人近期往项目中添加了环信即时聊天通讯云服务的server端就要求整个项目使用的jre环境更改为jdk1.8。之前项目也研发了一段时间从来没有服务器启动报这种错误情况，因为之前用的是jdk1.7。

这里产生这种报错的主要原因是jdk1.8跟你当前框架（spring+springmvc+mybatis）中spring框架的版本有问题，之前使用版本为3.2.0release版本，然后就升级spring框架jar的版本到了4.2.6。具体问题是否能够解决还暂定因为公司网速太慢了但是理论上应该是可以的。等测试成功后会追加相关文档描述记录。。。。。。。。。。。。。

刚刚试过了升级了以后还是报错解决方案项目buildpath config中把使用jdk换成1.7或者1.6的都行

以上内容转自 http://blog.csdn.net/kuizhewudi/article/details/51983379

我用的是 Maven，在 pom.xml 将一些 jar 的版本调低便能正常，主要是将几 spring 的从4.3.0调到4.2.0。可能是一些 jar 出现了 missing 吧，具体原因暂时还搞不清楚

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