Tomcat报错：Processing of multipart/form-data request failed. /usr/local/tomcat/work/Catalina/local

web项目上传图片不成功，tomcat日志报错如下：

Processing of multipart/form-data request failed. /usr/local/tomcat/work/Catalina/localhost/_/upload_065d149d_b147_4f36_bb49_9af8361c11ca_00000000.tmp (Permission denied)]

查了一下/usr/local/tomcat/work/Catalina/localhost/_文件夹所属用户及组都是root 

将其所属用户及组改为tomcat问题解决，原因待查。。。