上传文件到OSS报错：
[Server]Unable to execute HTTP request: Position is not equal to file length
控制台报类似以下的错：
[ErrorCode]: PositionNotEqualToLength [RequestId]: 603D07EA9ACC07383080C699 [HostId]: naiyi-course.oss-cn-shenzhen.aliyuncs.com [ResponseError]: <?xml version="1.0" encoding="UTF-8"?> <Error> <Code>PositionNotEqualToLength</Code> <Message>Position is not equal to file length</Message> <RequestId>603D07EA9ACC07383080C699</RequestId> <HostId>xxx-xxxx.oss-cn-shenzhen.aliyuncs.com</HostId> </Error> 27:40.004 ERROR o.a.c.c.C.[.[.[.[dispatcherServlet]:175 Servlet.service() for servlet [dispatcherServlet] in context with path [/file] threw exception [Request processing failed; nested exception is com.aliyun.oss.OSSException: Position is not equal to file length
说明：
其实报错很明显，我的代码未加判断，分片上传文件功能代码不够严谨。
解决：
将OSS上的文件，先删掉，再重新执行即可。
