求助，这是什么错呢？

[H_C2010]

严重: Servlet.service() for servlet Register threw exception
java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
at org.apache.commons.beanutils.BeanUtils.<clinit>(BeanUtils.java:111)
at com.swwp.bipt.bs.util.BeanUtilities.populateBean(BeanUtilities.java:40)
at com.swwp.bipt.bs.util.BeanUtilities.populateBean(BeanUtilities.java:29)
at com.swwp.bipt.bs.servlet.Register.doPost(Register.java:89)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)

[小霍夫]

java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory


有源码能拿出来晒下吗。 ？

[gesanri]

确定你导入了这个包？

[sotom]

commons/logging

commons 的包关联性很大，确认都导入了？

[海子尘]

1.包没有导入
2.包版本不一直

[xianrenxw]

缺包。 肯定是

[zhj92lxs]

commons-logging.jar确定这个导入了

[nuoboxgx]

那就是版本不一致啦
哈哈

[myj870517]

是不是已经启动了?看看有没有死进程,有的话杀掉.

[crazylaa]

java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory

commons-logging.jar没导或冲突