在項(xiàng)目中，一般會(huì)將文件臨時(shí)保存到緩存目錄

當(dāng)時(shí)使用

File.createTempFile("tmp", ext,

(File) request.getServletContext().getAttribute(ServletContext.TEMPDIR))

創(chuàng)建臨時(shí)文件時(shí)，項(xiàng)目一直運(yùn)行正常，然而有一次報(bào)異常：

org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request; nested exception is java.io.IOException:

The temporary upload location [/tmp/tomcat.7104877156386249310.8070/work/Tomcat/localhost/ROOT] is not valid

檢查文件目錄，文件確實(shí)不在，檢查代碼，也未發(fā)現(xiàn)問(wèn)題。實(shí)在不知道原因，只有重啟了服務(wù)器，問(wèn)題也就不再出現(xiàn)。

今天偶然查看官方文檔，發(fā)現(xiàn)問(wèn)題所在，也提供了解決方法

If you choose to use Tomcat on CentOS be aware that, by default, a temporary directory is

used to store compiled JSPs, file uploads etc. This directory may be deleted by?tmpwatch

while your application is running leading to failures. To avoid this, you may want to customize

your?tmpwatch?configuration so that?tomcat.*?directories are not deleted, or configure

server.tomcat.basedir?so that embedded Tomcat uses a different location

前往目錄?/etc/cron.daily/ 中，修改?tmpwatch 文件：

#! /bin/sh

flags=-umc

/usr/sbin/tmpwatch "$flags" -x /tmp/.X11-unix -x /tmp/.XIM-unix -x /tmp/.font-unix -x /tmp/.ICE-unix -x /tmp/.Test-unix -X ‘/tmp/hsperfdata_*‘ 10d /tmp -X ‘/tmp/tomcat.*‘ 10d /tmp

/usr/sbin/tmpwatch "$flags" 30d /var/tmp

for d in /var/{cache/man,catman}/{cat?,X11R6/cat?,local/cat?}; do

if [ -d "$d" ]; then

/usr/sbin/tmpwatch "$flags" -f 30d "$d"

fi

done

可以看到添加了一行

-X ‘/tmp/tomcat.*‘ 10d /tmp

原文：http://www.cnblogs.com/wenhui92/p/7109862.html

總結(jié)

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