問(wèn)題背景

VSCode是我們開(kāi)發(fā)go程序的常用工具，但是安裝VSCode成功后，創(chuàng)建一個(gè).go文件會(huì)有如下提示：

這個(gè)是vscode提示你需要安裝go插件，但是當(dāng)你點(diǎn)擊install all進(jìn)行安裝時(shí)，發(fā)現(xiàn)會(huì)安裝失敗。

Installing 8 tools at D:\pragrams\go\bin
  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:\install\go\bin\go.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:\install\go\bin\go.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:\install\go\bin\go.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:\install\go\bin\go.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:\install\go\bin\go.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:\install\go\bin\go.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:\install\go\bin\go.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:\install\go\bin\go.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(wèn)題原因

 在安裝go插件時(shí)，會(huì)自動(dòng)更新很多依賴(lài)庫(kù)文件，都是從Github更新下來(lái)，但是因?yàn)镚ithub的文件中，多有應(yīng)用go官網(wǎng)中的文件，因?yàn)橐恍┚W(wǎng)絡(luò)國(guó)內(nèi)無(wú)法訪問(wèn)，網(wǎng)絡(luò)緣故，不能直接下載，導(dǎo)致安裝失敗。

解決方案

方案1：快速方案

核心是配置國(guó)內(nèi)下載源，我們需要修改如下兩個(gè)go的環(huán)境配置：

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

配置好兩個(gè)變量后，重新打開(kāi)VSCode，點(diǎn)擊右下方的install all重新安裝，

或者，在vscode中使用Ctrl+Shift+P，輸入>go:install，下面會(huì)自動(dòng)搜索相關(guān)命令，我們選擇Go:Install/Update Tools這個(gè)命令，選中所有插件，點(diǎn)擊確定進(jìn)行安裝。

問(wèn)題成功解決：

方案2：環(huán)境變量中配置

Windows在電腦 -> 系統(tǒng) -> 高級(jí)系統(tǒng)設(shè)置 -> 用戶(hù)環(huán)境中分別新建GO111MODULE和GOPROXY兩個(gè)用戶(hù)變量，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/   
 

配置好之后，使用Windows + R調(diào)出終端，輸入cmd，通過(guò)go env命令查看go的環(huán)境變量配置是否設(shè)置成功。 

方案3：vscode中配置

vscode編輯器的設(shè)置在：文件 -> 首選項(xiàng) -> 設(shè)置 -> 用戶(hù) -> 應(yīng)用程序 -> 代理服務(wù)器路徑下，如下圖所示：

總結(jié)

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