When request entity too large occurs, it is because the transport stream exceeds 1m.

1. It is necessary to set parameters in ingress of rancher.

Configuration note: nginx.ingress.kubernetes.io/proxy-body-size

2. Springboot 2.0 adds configuration to the configuration file

spring.servlet.multipart.max-file-size=1024MB
spring.servlet.multipart.max-request-size=1024MB