SpringBoot内嵌Tomcat临时目录问题及解决

/usr/lib/tmpfiles.d/tmp.conf

#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.

# See tmpfiles.d(5) for details

# Clear tmp directories separately, to make them easier to override
v /tmp 1777 root root 10d          
v /var/tmp 1777 root root 30d      

# Exclude namespace mountpoints created with PrivateTmp=yes
x /tmp/systemd-private-%b-*
X /tmp/systemd-private-%b-*/tmp
x /var/tmp/systemd-private-%b-*
X /var/tmp/systemd-private-%b-*/tmp

-Djava.io.tmpdir=/var/tmp

server:
    tomcat:
       basedir: /var/tmp/

@Configuration
public class MultipartConfig {
@Bean
MultipartConfigElement multipartConfigElement() {
MultipartConfigFactory factory = new MultipartConfigFactory();
String location = System.getProperty("user.dir") + "/data/tmp";
File tmpFile = new File(location);
if (!tmpFile.exists()) {
tmpFile.mkdirs();
}
factory.setLocation(location);
return factory.createMultipartConfig();
}
}

        catch (NoSuchMethodError ex) {
            // Tomcat is < 8.0.30. Continue
        }
        //新增代码开始
        try {
            context.setCreateUploadTargets(true);
        }
        catch (NoSuchMethodError ex) {
            // Tomcat is < 8.5.39. Continue.
        }
         //新增代码结束
         SkipPatternJarScanner.apply(context, this.tldSkipPatterns);