参考 https://blog.csdn.net/kkgbn/article/details/52088068
application.properties 添加
server.tomcat.max-http-post-size=-1
参考 https://blog.csdn.net/u010429286/article/details/54381705
spring1.4及之后
spring.http.multipart.maxFileSize = 10Mb
spring.http.multipart.maxRequestSize=100Mb
spring2.0之后
spring.servlet.multipart.max-file-size = 10Mb
spring.http.multipart.max-request-size=100Mb
