目的：在springboot2.0上面配置上传文件大小

1、application.properties

spring.servlet.multipart.max-file-size=50Mb 
spring.servlet.multipart.max-request-size=200Mb

2、application.yml

spring:
    servlet:
        multipart:
           enabled: true
           max-file-size: 20MB
           max-request-size: 200MB