go module下golang.org如何处理被墙

一、系统提示

go: golang.org/x/sys@v0.0.0-20180905080454-ebe1bf3edb33: unrecognized import path "golang.org/x/sys" (https fetch: Get https://golang.org/x/sys?go-get=1: dial tcp 216.239.37.1:443: i/otimeout)
go: golang.org/x/crypto@v0.0.0-20180904163835-0709b304e793: unrecognized import path "golang.org/x/crypto" (https fetch: Get https://golang.org/x/crypto?go-get=1: dial tcp 216.239.37.1:443: i/o timeout)
go: error loading module requirements

二、解决方案

在go.mod进行如下设置：