Spring Boot做文件上传时出现了The field file exceeds its maximum permitted size of 1048576 bytes.错误，显示文件的大小超出了允许的范围。
可以修改配置文件来修改限制文件大小
Spring Boot1.4版本后配置更改为:
spring.http.multipart.maxFileSize = 10Mb
spring.http.multipart.maxRequestSize=100Mb
Spring Boot2.0之后的版本配置修改为:
spring.servlet.multipart.max-file-size=10MB
spring.servlet.multipart.max-request-size=100MB
Spring Boot:The field file exceeds its maximum permitted size of 1048576 bytes.
原文：https://www.cnblogs.com/f9264/p/14917472.html