macOS Go 拉取 Gin 时出错【已解决】 dial tcp 216.239.37.1:443: i/o timeout

macOS Go 拉取 Gin 时出错【已解决】 dial tcp 216.239.37.1:443: i/o timeout

在想下载 gin 时，老是出错，无法获取，错误如下

我用的 zsh，所以命令行中显示的是 % 而不是 $

Kyle@Kyles-MBP ~ % go get -u github.com/gin-gonic/gin
package golang.org/x/crypto/sha3: unrecognized import path "golang.org/x/crypto/sha3": https fetch: Get "https://golang.org/x/crypto/sha3?go-get=1": dial tcp 216.239.37.1:443: i/o timeout
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找了网上的各种方法，依然如此。其实正确答案就在 https://goproxy.cn/里写着

每次执行

export GO111MODULE=on
export GOPROXY=https://goproxy.cn
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或者将它加到当前用户的 .bash_profile 中， go 的 path 之前也是加在 .bash_profile 中

# go
export PATH="/usr/local/go/bin:$PATH"
# 下面是需要添加的两行
export GO111MODULE=on
export GOPROXY=https://goproxy.cn
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添加完成后保存，还需要执行一下这个指令使其生效：

source .bash_profile
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成功

然后再拉取，成功

Kyle@Kyles-MBP ~ % go get -u github.com/gin-gonic/gin

go: downloading github.com/gin-gonic/gin v1.6.3
go: github.com/gin-gonic/gin upgrade => v1.6.3
go: downloading github.com/golang/protobuf v1.3.3
go: downloading github.com/gin-contrib/sse v0.1.0
go: downloading github.com/mattn/go-isatty v0.0.12
go: downloading gopkg.in/yaml.v2 v2.2.8
go: downloading github.com/json-iterator/go v1.1.9
go: downloading github.com/ugorji/go v1.1.7
go: downloading github.com/go-playground/validator/v10 v10.2.0
go: downloading github.com/ugorji/go/codec v1.1.7
go: downloading golang.org/x/sys v0.0.0-20200116001909-b77594299b42
go: downloading github.com/leodido/go-urn v1.2.0
go: downloading github.com/go-playground/universal-translator v0.17.0
go: downloading github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742
go: downloading github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421
go: downloading github.com/go-playground/locales v0.13.0
go: github.com/leodido/go-urn upgrade => v1.2.1
go: github.com/modern-go/reflect2 upgrade => v1.0.1
go: gopkg.in/yaml.v2 upgrade => v2.4.0
go: github.com/ugorji/go/codec upgrade => v1.2.3
go: github.com/go-playground/validator/v10 upgrade => v10.4.1
go: github.com/json-iterator/go upgrade => v1.1.10
go: golang.org/x/sys upgrade => v0.0.0-20210124154548-22da62e12c0c
go: github.com/golang/protobuf upgrade => v1.4.3
go: github.com/modern-go/concurrent upgrade => v0.0.0-20180306012644-bacd9c7ef1dd
go: downloading github.com/json-iterator/go v1.1.10
go: downloading gopkg.in/yaml.v2 v2.4.0
go: downloading github.com/golang/protobuf v1.4.3
go: downloading golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c
go: downloading github.com/ugorji/go v1.2.3
go: downloading github.com/go-playground/validator/v10 v10.4.1
go: downloading google.golang.org/protobuf v1.23.0
go: downloading github.com/ugorji/go/codec v1.2.3
go: downloading github.com/modern-go/reflect2 v1.0.1
go: downloading github.com/leodido/go-urn v1.2.1
go: downloading golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
go: downloading github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd
go: golang.org/x/crypto upgrade => v0.0.0-20201221181555-eec23a3978ad
go: google.golang.org/protobuf upgrade => v1.25.0
go: downloading google.golang.org/protobuf v1.25.0
go: downloading golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad
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