大家好，我是烤鴨:
? ? 下面又來踩坑實錄了。主要是兩個問題，第一是圖片上傳異常，第二是下載文件異常。其實都是在服務(wù)器上寫入失敗。有的人說是權(quán)限問題，但是這個一直沒人動過。
? ? 由于過年放假，導(dǎo)致測試環(huán)境很長時間沒動過。

? ??The temporary upload location [/tmp/tomcat.xxx/work/Tomcat/localhost/etc] is not valid或者SXSSFSheet No ?such ?file ?or ?directory

1. 錯誤日志如下：

2020-02-04 18:24:02.788 [http-nio-9088-exec-4] INFO com.etc.etcdt.service.DtSupportService - 耗時 26782 2020-02-04 18:24:03.452 [http-nio-9088-exec-4] ERROR o.a.c.c.C.[.[.[/etcdtsupport].[dispatcherServlet] - Servlet.service() for servlet [dispatcherServlet] in context with path [/etcdtsupport] threw exception [Request processing failed; nested exception is java.lang.RuntimeException: java.io.IOException: No such file or directory] with root cause java.io.IOException: No such file or directory at java.io.UnixFileSystem.createFileExclusively(Native Method) at java.io.File.createTempFile(File.java:2024) at org.apache.poi.util.TempFile$DefaultTempFileCreationStrategy.createTempFile(TempFile.java:105) at org.apache.poi.util.TempFile.createTempFile(TempFile.java:60) at org.apache.poi.xssf.streaming.GZIPSheetDataWriter.createTempFile(GZIPSheetDataWriter.java:56) at org.apache.poi.xssf.streaming.SheetDataWriter.<init>(SheetDataWriter.java:63) at org.apache.poi.xssf.streaming.SheetDataWriter.<init>(SheetDataWriter.java:68) at org.apache.poi.xssf.streaming.GZIPSheetDataWriter.<init>(GZIPSheetDataWriter.java:48) at org.apache.poi.xssf.streaming.SXSSFWorkbook.createSheetDataWriter(SXSSFWorkbook.java:292) at org.apache.poi.xssf.streaming.SXSSFSheet.<init>(SXSSFSheet.java:75) at org.apache.poi.xssf.streaming.SXSSFWorkbook.createAndRegisterSXSSFSheet(SXSSFWorkbook.java:636) at org.apache.poi.xssf.streaming.SXSSFWorkbook.createSheet(SXSSFWorkbook.java:629) at com.etc.etcdt.util.ExcelUtils.exportExcelX(ExcelUtils.java:217) at com.etc.etcdt.controller.DtSupportController.exportList(DtSupportController.java:175) at sun.reflect.GeneratedMethodAccessor459.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) at org.springframework.web.servlet 2020-02-03 10:25:47.975 [TID:[Ignored Trace]] [http-nio-8082-exec-8] ERROR [class:com.etc.controller.exception.AdminExceptionHandler | method:ExceptionHandler | line:35] logInfo==> 捕獲到全局Exception異常 org.springframework.web.multipart.MultipartException: Failed to parse multipart servlet request; nested exception is java.io.IOException: The temporary upload location [/tmp/tomcat.5469282235024276004.8082/work/Tomcat/localhost/etc] is not validat org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.handleParseFailure(StandardMultipartHttpServletRequest.java:122)at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:113)at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.<init>(StandardMultipartHttpServletRequest.java:86)at org.springframework.web.multipart.support.StandardServletMultipartResolver.resolveMultipart(StandardServletMultipartResolver.java:91)at org.springframework.web.servlet.DispatcherServlet.checkMultipart(DispatcherServlet.java:1128)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:960)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974)at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:877)at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851)at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:96)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.cloud.sleuth.instrument.web.ExceptionLoggingFilter.doFilter(ExceptionLoggingFilter.java:48)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at brave.servlet.TracingFilter.doFilter(TracingFilter.java:86)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)at org.apache.catalina.core.StandardHostValve.invoke$original$gOuLEzsV(StandardHostValve.java:140)at org.apache.catalina.core.StandardHostValve.invoke$original$gOuLEzsV$accessor$kSEkC0yr(StandardHostValve.java)at org.apache.catalina.core.StandardHostValve$auxiliary$zT9PiNzH.call(Unknown Source)at org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstMethodsInter.intercept(InstMethodsInter.java:93)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:748) Caused by: java.io.IOException: The temporary upload location [/tmp/tomcat.5469282235024276004.8082/work/Tomcat/localhost/etc] is not validat org.apache.catalina.connector.Request.parseParts(Request.java:2877)at org.apache.catalina.connector.Request.parseParameters(Request.java:3242)at org.apache.catalina.connector.Request.getParameter(Request.java:1136)at org.apache.catalina.connector.RequestFacade.getParameter(RequestFacade.java:381)at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:84)... 33 common frames omitted

2. 解決方案

這篇文章說的挺好的。
https://blog.csdn.net/eumenides_/article/details/84066539
springboot打jar包通過java -jar啟動的項目，如果上傳文件會在linux的/temp/下生成一個tomcat*的文件夾，上傳的文件先要轉(zhuǎn)換成臨時文件保存在這個文件夾下面。由于臨時/tmp目錄下的文件，在長時間（10天）沒有使用的情況下，就會被系統(tǒng)機(jī)制自動刪除掉。所以如果系統(tǒng)長時間無人問津的話，就可能導(dǎo)致上面這個問題。

解決辦法：

1. 臨時的，直接重新啟動項目就行，會重新建立臨時文件夾
2. 在配置文件中配置tomcat的臨時目錄：

server.tomcat.basedir=/home/temp

?

總結(jié)

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