spring-boot项目，生产环境运行一段时间后，上传图片报错，如下：

threw exception [Request processing failed; nested exception is org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request; nested exception is java.io.IOException: The temporary upload location [/tmp/tomcat.2982178524163133296.8080/work/Tomcat/localhost/ssc] is not valid] with root cause] |
java.io.IOException: The temporary upload location [/tmp/tomcat.2982178524163133296.8080/work/Tomcat/localhost/ssc] is not valid

解决方案：添加指定目录

@Configuration

public class MultipartConfig {

    /**

     * 文件上传临时路径

     */

    @Bean

    MultipartConfigElement multipartConfigElement() {

        MultipartConfigFactory factory = new MultipartConfigFactory();

        factory.setLocation("/data/dubbo/cache");

        return factory.createMultipartConfig();

    }

}