現象
打包出現下面的錯誤
go build
go: github.com/auth0/go-jwt-middleware@v0.0.0-20190805220309-36081240882b: Get "https://proxy.golang.org/github.com/auth0/go-jwt-middleware/@v/v0.0.0-20190805220309-36081240882b.mod": dial tcp 216.58.200.241:443: connectex: A connection 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 respond.
原因
go.mod 代理連接出錯
解決方法
go.mod 設置代理
golang1.13.x 在命令行中可以直接執行：
go env -w GO111MODULE=on
go env -w GOPROXY=https://goproxy.cn,direct