概述
Liunx部署J2EE项目 ---问题 概述
近期有一个自己写的项目需要发布到阿里云服务器，因而将其打包为war发布到阿里云上，但是在部署的过程中产生了很费解的问题。
查看 linux上 tomcat的日志输出查看错误代码：
org.springframework.web.context.ContextLoader.initWebApplicationContext Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/config/DaoContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type [java.util.ArrayList] to required type [java.lang.Class[]] for property 'annotatedClasses'; nested exception is java.lang.IllegalArgumentException: Error loading class [org.common.RBAC.domain.Account]: problem with class file or dependent class.
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:753)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4745)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5207)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:952)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1823)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.TypeMismatchException: Failed to convert property value of type [java.util.ArrayList] to required type [java.lang.Class[]] for property 'annotatedClasses'; nested exception is java.lang.IllegalArgumentException: Error loading class [org.common.RBAC.domain.Account]: problem with class file or dependent class.
at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:596)
at org.springframework.beans.AbstractNestablePropertyAccessor.convertForProperty(AbstractNestablePropertyAccessor.java:603)
at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:204)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1527)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1486)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1226)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
... 24 more
Caused by: java.lang.IllegalArgumentException: Error loading class [org.common.RBAC.domain.Account]: problem with class file or dependent class.
at org.springframework.util.ClassUtils.resolveClassName(ClassUtils.java:290)
at org.springframework.beans.propertyeditors.ClassEditor.setAsText(ClassEditor.java:63)
at org.springframework.beans.TypeConverterDelegate.doConvertTextValue(TypeConverterDelegate.java:464)
at org.springframework.beans.TypeConverterDelegate.doConvertValue(TypeConverterDelegate.java:437)
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:195)
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:143)
at org.springframework.beans.TypeConverterDelegate.convertToTypedArray(TypeConverterDelegate.java:475)
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:212)
at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:576)
... 30 more
Caused by: java.lang.UnsupportedClassVersionError: org/common/RBAC/domain/Account : Unsupported major.minor version 52.0 (unable to load class [org.common.RBAC.domain.Account])
at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:2280)
at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:811)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1254)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)
at org.springframework.util.ClassUtils.forName(ClassUtils.java:250)
at org.springframework.util.ClassUtils.resolveClassName(ClassUtils.java:284)
... 38 more
01-Jun-2017 15:45:32.014 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal One or more listeners failed to start. Full details will be found in the appropriate container log file
01-Jun-2017 15:48:39.130 INFO [localhost-startStop-1] org.apache.catalina.util.SessionIdGeneratorBase.createSecureRandom Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [187,115] milliseconds.
01-Jun-2017 15:48:39.131 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal Context [/dftsms-web] startup failed due to previous errors
01-Jun-2017 15:48:39.146 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [/home/liushengliang/tomcat/tomcat/webapps/dftsms-web.war] has finished in [194,966] ms
01-Jun-2017 15:48:39.147 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/liushengliang/tomcat/tomcat/webapps/docs]
01-Jun-2017 15:48:39.198 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/liushengliang/tomcat/tomcat/webapps/docs] has finished in [50] ms
01-Jun-2017 15:48:39.198 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/liushengliang/tomcat/tomcat/webapps/test]
01-Jun-2017 15:48:39.250 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/liushengliang/tomcat/tomcat/webapps/test] has finished in [51] ms
01-Jun-2017 15:48:39.253 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/liushengliang/tomcat/tomcat/webapps/examples]
01-Jun-2017 15:48:39.537 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/liushengliang/tomcat/tomcat/webapps/examples] has finished in [284] ms
01-Jun-2017 15:48:39.538 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/liushengliang/tomcat/tomcat/webapps/manager]
01-Jun-2017 15:48:39.603 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/liushengliang/tomcat/tomcat/webapps/manager] has finished in [65] ms
01-Jun-2017 15:48:39.603 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/liushengliang/tomcat/tomcat/webapps/ROOT]
01-Jun-2017 15:48:39.647 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/liushengliang/tomcat/tomcat/webapps/ROOT] has finished in [44] ms
01-Jun-2017 15:48:39.649 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/liushengliang/tomcat/tomcat/webapps/host-manager]
01-Jun-2017 15:48:39.698 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/liushengliang/tomcat/tomcat/webapps/host-manager] has finished in [49] ms
01-Jun-2017 15:48:39.704 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
01-Jun-2017 15:48:39.725 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"]
01-Jun-2017 15:48:39.728 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 195694 ms分析：
Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/config/DaoContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type [java.util.ArrayList] to required type [java.lang.Class[]] for property 'annotatedClasses';nested exception is java.lang.IllegalArgumentException: Error loading class [org.common.RBAC.domain.Account]: problem with class file or dependent class.大体意思是说：springframework 无法把 ArrayList 转换为所需要的class[]数组的形式，annotationClasses是我的Hibernate配置的实体类。如下：
<property name="annotatedClasses">
<list>
<!-- common模块中的持久化类 -->
<value>org.common.RBAC.domain.Account</value>
<value>org.common.RBAC.domain.Role</value>
<value>org.common.RBAC.domain.Power</value>
<value>org.common.RBAC.domain.Pictures</value>
<value>org.common.FDBK.domain.Store</value>
<value>org.common.FDBK.domain.Address</value>
<value>org.common.FDBK.domain.Province_addr</value>
<value>org.common.FDBK.domain.City_addr</value>
<value>org.common.FDBK.domain.Areacounty_addr</value>
<value>org.common.FDBK.domain.Goods</value>
</list>
</property>就是说上面这个list无法转换。
解决方法：在google上搜索发现解决办法：
点击打开链接 https://stackoverflow.com/questions/26367159/initialization-of-bean-failed-nested-exception-is-org-springframework-beans
说是要把
<property name="annotatedClasses"> 改为 packagesToScan ，h试试呗。 改完之后，这个问题是解决了，但是又有问题：org.springframework.web.context.ContextLoader.initWebApplicationContext Context initialization failed
org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [org.common.RBAC.dao.impl.AccountDaoImpl] for bean with name 'accountDao' defined in ServletContext resource [/WEB-INF/config/CommonsBeans.xml]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: org/common/RBAC/dao/impl/AccountDaoImpl : Unsupported major.minor version 52.0 (unable to load class [org.common.RBAC.dao.impl.AccountDaoImpl])
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:4745)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5207)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:952)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1823)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.UnsupportedClassVersionError: org/common/RBAC/dao/impl/AccountDaoImpl : Unsupported major.minor version 52.0 (unable to load class [org.common.RBAC.dao.impl.AccountDaoImpl])
at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:2280)
at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:811)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1254)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)
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)
... 23 more
02-Jun-2017 15:46:48.342 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal One or more listeners failed to start. Full details will be found in the appropriate container log file
02-Jun-2017 15:49:46.633 INFO [localhost-startStop-1] org.apache.catalina.util.SessionIdGeneratorBase.createSecureRandom Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [178,290] milliseconds.
02-Jun-2017 15:49:46.633 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal Context [/dftsms-web] startup failed due to previous errors
02-Jun-2017 15:49:46.643 WARNING [localhost-startStop-1] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesJdbc The web application [dftsms-web] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
02-Jun-2017 15:49:46.644 WARNING [localhost-startStop-1] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [dftsms-web] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:64)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
java.lang.Thread.run(Thread.java:745)
02-Jun-2017 15:49:46.650 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [/home/liushengliang/tomcat/tomcat/webapps/dftsms-web.war] has finished in [187,494] ms
02-Jun-2017 15:49:46.653 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/liushengliang/tomcat/tomcat/webapps/docs]
02-Jun-2017 15:49:46.785 INFO [20] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading Illegal access: this web application instance has been stopped already. Could not load []. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load []. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1305)
at org.apache.catalina.loader.WebappClassLoaderBase.getResource(WebappClassLoaderBase.java:986)
at com.mysql.jdbc.AbandonedConnectionCleanupThread.checkContextClassLoaders(AbandonedConnectionCleanupThread.java:90)
at com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:63)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
02-Jun-2017 15:49:46.787 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/liushengliang/tomcat/tomcat/webapps/docs] has finished in [134] ms
02-Jun-2017 15:49:46.787 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/liushengliang/tomcat/tomcat/webapps/test]
02-Jun-2017 15:49:46.827 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/liushengliang/tomcat/tomcat/webapps/test] has finished in [40] ms
02-Jun-2017 15:49:46.833 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/liushengliang/tomcat/tomcat/webapps/examples]
02-Jun-2017 15:49:47.025 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/liushengliang/tomcat/tomcat/webapps/examples] has finished in [192] ms
02-Jun-2017 15:49:47.025 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/liushengliang/tomcat/tomcat/webapps/manager]
02-Jun-2017 15:49:47.060 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/liushengliang/tomcat/tomcat/webapps/manager] has finished in [35] ms
02-Jun-2017 15:49:47.065 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/liushengliang/tomcat/tomcat/webapps/ROOT]
02-Jun-2017 15:49:47.101 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/liushengliang/tomcat/tomcat/webapps/ROOT] has finished in [36] ms
02-Jun-2017 15:49:47.105 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/liushengliang/tomcat/tomcat/webapps/host-manager]
02-Jun-2017 15:49:47.141 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/liushengliang/tomcat/tomcat/webapps/host-manager] has finished in [36] ms
02-Jun-2017 15:49:47.159 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
02-Jun-2017 15:49:47.173 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"]
02-Jun-2017 15:49:47.176 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 188166 ms解决办法：
上面两个问题都有cause by ： 原因都指向java 版本问题 ，意思是说： 高版本jdk编译的项目运行在了低版本环境上，因而
出现错误。
一、错误现象：
当改变了jdk版本时，在编译java时，会遇到Unsupported major.minor version错误。
错误信息如下 ：
Unsupported major.minor version 50.0
Unsupported major.minor version 49.0 （我在jdk1.4 和1.5切换时就遇到了这个错误）
Unsupported major.minor version 48.0
二、错误原因：
类似错误均属于Java版本问题，即JDK版本过低，只要选择相对应的JDK版本编译即可。
48，49，50是Java编译器内部的版本号：
Unsupported major.minor version 50.0 对应于 JDK1.6（JRE1.6）
Unsupported major.minor version 49.0 对应于 JDK1.5（JRE1.5）
Unsupported major.minor version 48.0 对应于 JDK1.4（JRE1.4）
查看阿里云服务器java version：
分析： java 版本没有问题 ，都是jdk1. 8 ， 但是为什么报错。
之后：把项目再次部署到服务器，查看启动日志： 再次搜索错误原因，由下面的问题得到灵感：
分析： 想到，问题原因是 高版本编译的项目使用了低版本的jdk来编译，但是linux 的 jdk
java 环境 确实是jdk 1.8 。由上面的问题可以看出，在项目部署到Tomcat后，tomcat默认的jre
或许并不是 jdk 1.8,因为我的 linux服务器安装了两个jdk。因而查看之，
果然：linux自带jdk1.8，但是我的tomcat所使用的jre是自己安装的jdk1.7。
我的tomcat的jre编译环境是 /home/liushenliang/java/jdk，查看后发现：
该jre环境是jdk1.7,问题找到：
解决方法：
修改tomcat 的文件 setclasspath.sh 为：
修改tomcat 编译环境为jdk1.8完成，重新部署，成功。
最后
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