错误描述
Caused by: java.lang.NoClassDefFoundError: org/apache/poi/hssf/record/ExternSheetRecord$RefSubRecord
at org.apache.poi.hssf.record.ExternSheetRecord.<init>(ExternSheetRecord.java:102)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.apache.poi.hssf.record.RecordFactory$ReflectionConstructorRecordCreator.create(RecordFactory.java:84)
... 135 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.apache.poi.hssf.record.ExternSheetRecord$RefSubRecord
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:93)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
解决方法
pom中也引入了，有可能纯粹就是打包的问题，重新打包、重启，不再报错解决问题