解决问题 :

go: module github.com/go-sql-driver/mysql: Get “https://proxy.golang.org/github.com/go-sql-driver/mysql/@v/list”: dial tcp 172.217.163.49:443: connectex: A connectio
n attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to r
espond.

给GO 配置一下

go env -w GOPROXY=https://goproxy.cn,direct

再执行一下

go get  github.com/go-sql-driver/mysql

完美解决 !