iMC&U-Center jserver进程启动失败的一种常见可能性

不涉及

iMC&U-Center jserver进程启动失败，报错“进程启动失败，需要审计日志分析原因”或者“进程启动未知错误”等之类的报错

对于进程启动失败问题，什么进程启动失败就对应查看什么进程的日志。如本例现场jserver进程启动失败，就收集imcforeground.log分析。

1、查看日志有如下报错提示，该问题很常见，大部分是因为现场环境有杀毒软件、或者磁盘异常导致server.xml文件被损坏导致。

2、现场对应查找%iMC/client/conf/server.xml，发现文件大小确实只有0Kb。

2020-11-14 10:15:38 [WARN ] [main] [com.imc.common.CommonUtils::queryWebServerPort] getWebServerPort() Parse E:\Program Files\iMC\client\conf\server.xml get SAXException: org.xml.sax.SAXParseException; systemId: file:/E:/Program%20Files/iMC/client/conf/server.xml; lineNumber: 1; columnNumber: 1; 文件提前结束。 

 at ***.***.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:257) 

at ***.***.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:347) 

at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:205)

at com.imc.common.CommonUtils.queryWebServerPort(CommonUtils.java:728)

at com.imc.common.CommonUtils.getWebServerPortFromServerXml(CommonUtils.java:556) 

at com.imc.bootstrap.TomcatStartup.init(TomcatStartup.java:136)

at com.imc.bootstrap.TomcatStartup.afterPropertiesSet(TomcatStartup.java:79) 

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1571) 

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1509) 

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521) 

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) 

 at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296)

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) 

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293) 

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)

at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:633) 

at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479) 

at com.imc.bootstrap.IMCServer.load(IMCServer.java:112) 

 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606) at com.imc.bootstrap.ServerStartup.load(ServerStartup.java:677) 

at com.imc.bootstrap.ServerStartup.start(ServerStartup.java:511) at com.imc.bootstrap.ServerStartup.process(ServerStartup.java:384) 

at com.imc.bootstrap.Bootstrap.process(Bootstrap.java:139) 

 at com.imc.bootstrap.Bootstrap.main(Bootstrap.java:249)

从现场环境

%iMC\deploy\components\iMC-PLAT\V700R001B06D023SP05(这个根据现场实际环境修改，即为目录下最新文件夹)\client\client.zip\client\conf找到server.xml文件对应替换到现场环境对应目录下E:\Program Files\iMC\client\conf\server.xml下，再重启jserver即可。

注：该问题分析及排查不局限于jserver进程启动失败，对于其他例如euplat和seplat等进程启动失败都有可能会有类似原因，只要日志中出现这个上述错误，一般这么处理就能解决。