问题：项目放在weblogic运行，报错
java.lang.NoSuchMethodError: org.joda.time.DateTime.withTimeAtStartOfDay()Lorg/joda/time/DateTime;
at com.taijue.rjhome.frame.util.FrameHelper.readNights(FrameHelper.java:36)
at com.taijue.user.external.ExternalInterfaceService.getNights(ExternalInterfaceService.java:738)
at com.taijue.user.external.ExternalInterfaceController.findKwhOfSeriesFromTime(ExternalInterfaceController.java:113)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
Truncated. see log file for complete stacktrace
查看相关的报错的包，发现jar包已引入，方法也存在，但是依然报错NoSuchMethodError
原因：weblogic内部存在包joda-time包，造成包冲突
解决办法：在weblogic.xml里面添加代码
<wls:container-descriptor>
<wls:prefer-web-inf-classes>false</wls:prefer-web-inf-classes>
<wls:prefer-application-packages>
<package-name>org.joda.*</package-name>
</wls:prefer-application-packages>
</wls:container-descriptor>
问题解决
ps:一般报错NoSuchMethodError，有两个原因
1.jar包里面方法不存在
2.jar包里面方法存在，包冲突