VS Code安裝go外掛失敗原因分析以及解決方案

2022-09-08 18:04:31

問題背景

VSCode是我們開發go程式的常用工具，但是安裝VSCode成功後，建立一個.go檔案會有如下提示：

這個是vscode提示你需要安裝go外掛，但是當你點選install all進行安裝時，發現會安裝失敗。

Installing 8 tools at D:pragramsgobin
gocode
gopkgs
go-outline
go-symbols
dlv
godef
goreturns
golint

Installing github.com/mdempsky/gocode FAILED
Installing github.com/uudashr/gopkgs/cmd/gopkgs FAILED
Installing github.com/ramya-rao-a/go-outline FAILED
Installing github.com/acroca/go-symbols FAILED
Installing github.com/derekparker/delve/cmd/dlv FAILED
Installing github.com/rogpeppe/godef FAILED
Installing github.com/sqs/goreturns FAILED
Installing golang.org/x/lint/golint FAILED

8 tools failed to install.

gocode:
Error: Command failed: D:installgobingo.exe get -u -v github.com/mdempsky/gocode
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/mdempsky/gocode: exec: "git": executable file not found in %PATH%
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/mdempsky/gocode: exec: "git": executable file not found in %PATH%

gopkgs:
Error: Command failed: D:installgobingo.exe get -u -v github.com/uudashr/gopkgs/cmd/gopkgs
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/uudashr/gopkgs/cmd/gopkgs: exec: "git": executable file not found in %PATH%
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/uudashr/gopkgs/cmd/gopkgs: exec: "git": executable file not found in %PATH%

go-outline:
Error: Command failed: D:installgobingo.exe get -u -v github.com/ramya-rao-a/go-outline
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/ramya-rao-a/go-outline: exec: "git": executable file not found in %PATH%
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/ramya-rao-a/go-outline: exec: "git": executable file not found in %PATH%

go-symbols:
Error: Command failed: D:installgobingo.exe get -u -v github.com/acroca/go-symbols
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/acroca/go-symbols: exec: "git": executable file not found in %PATH%
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/acroca/go-symbols: exec: "git": executable file not found in %PATH%

dlv:
Error: Command failed: D:installgobingo.exe get -u -v github.com/derekparker/delve/cmd/dlv
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/derekparker/delve/cmd/dlv: exec: "git": executable file not found in %PATH%
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/derekparker/delve/cmd/dlv: exec: "git": executable file not found in %PATH%

godef:
Error: Command failed: D:installgobingo.exe get -u -v github.com/rogpeppe/godef
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/rogpeppe/godef: exec: "git": executable file not found in %PATH%
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/rogpeppe/godef: exec: "git": executable file not found in %PATH%

goreturns:
Error: Command failed: D:installgobingo.exe get -u -v github.com/sqs/goreturns
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/sqs/goreturns: exec: "git": executable file not found in %PATH%
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/sqs/goreturns: exec: "git": executable file not found in %PATH%

golint:
Error: Command failed: D:installgobingo.exe get -u -v golang.org/x/lint/golint
go: missing Git command. See https://golang.org/s/gogetcmd
package golang.org/x/lint/golint: exec: "git": executable file not found in %PATH%
go: missing Git command. See https://golang.org/s/gogetcmd
package golang.org/x/lint/golint: exec: "git": executable file not found in %PATH%

問題原因

在安裝go外掛時，會自動更新很多依賴庫檔案，都是從Github更新下來，但是因為Github的檔案中，多有應用go官網中的檔案，因為一些網路國內無法存取，網路緣故，不能直接下載，導致安裝失敗。

解決方案

方案1：快速方案

核心是設定國內下載源，我們需要修改如下兩個go的環境設定：

go env -w GO111MODULE=on
go env -w GOPROXY=https://goproxy.cn

設定好兩個變數後，重新開啟VSCode，點選右下方的install all重新安裝，

或者，在vscode中使用Ctrl+Shift+P，輸入>go:install，下面會自動搜尋相關命令，我們選擇Go:Install/Update Tools這個命令，選中所有外掛，點選確定進行安裝。

問題成功解決：

方案2：環境變數中設定

Windows在電腦 -> 系統 -> 高階系統設定 -> 使用者環境中分別新建GO111MODULE和GOPROXY兩個使用者變數，其值如下圖所示：

GO111MODULE=on
GOPROXY=https://goproxy.cn,direct

或者也可以使用阿里源代理如下：

GO111MODULE=on
GOPROXY=https://mirrors.aliyun.com/goproxy/

設定好之後，使用Windows + R調出終端，輸入cmd，通過go env命令檢視go的環境變數設定是否設定成功。

方案3：vscode中設定

vscode編輯器的設定在：檔案 -> 偏好設定 -> 設定 -> 使用者 -> 應用程式 -> 代理伺服器路徑下，如下圖所示：

總結

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