问题是我无法使用xls文件从inputstream打开工作簿。
当我尝试通过WorkbookFactory.create(inputStream)打开它时，我得到：
Exception in thread "main" org.apache.poi.hssf.record.RecordFormatException: Not enough data (0) to read requested (1) bytes
at org.apache.poi.hssf.record.RecordInputStream.checkRecordPosition(RecordInputStream.java:216)
at org.apache.poi.hssf.record.RecordInputStream.readByte(RecordInputStream.java:224)
at org.apache.poi.hssf.record.RecordInputStream.readUByte(RecordInputStream.java:260)
at org.apache.poi.hssf.record.DConRefRecord.<init>(DConRefRecord.java:174)
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:422)
at org.apache.poi.hssf.record.RecordFactory$ReflectionConstructorRecordCreator.create(RecordFactory.java:87)
at org.apache.poi.hssf.record.RecordFactory.createSingleRecord(RecordFactory.java:338)
at org.apache.poi.hssf.record.RecordFactoryInputStream.readNextRecord(RecordFactoryInputStream.java:310)
at org.apache.poi.hssf.record.RecordFactoryInputStream.nextRecord(RecordFactoryInputStream.java:276)
at org.apache.poi.hssf.record.RecordFactory.createRecords(RecordFactory.java:480)
at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:326)
at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:115)
at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:172)
at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:143)
at ru.efo.search.support.excel.WorkBookReader.init(WorkBookReader.java:67)
at ru.efo.search.support.excel.WorkBookReader.<init>(WorkBookReader.java:42)
at ru.efo.search.support.excel.WorkBookReader.main(WorkBookReader.java:126)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
但是如果相同的文件是.xlsm格式，它可以正常工作，因为WorkbookFactory使用XSSFWorkbook而不是HSSFWorkbook。不幸的是，我的应用程序中只有InputStream，我无法更改文件格式。请帮助！