在 VS Code 中，使用快捷键：command+shift+P，然后键入：go:install/update tools，将所有 的插件都勾选上，然后点击 OK 即开始安装。
附带我的 settings.json
{
"go.goroot": "",
"go.gopath": "",
"go.inferGopath": true,
"go.autocompleteUnimportedPackages": true,
"go.gocodePackageLookupMode": "go",
"go.gotoSymbol.includeImports": true,
"go.useCodeSnippetsOnFunctionSuggest": true,
"go.useCodeSnippetsOnFunctionSuggestWithoutType": true,
"go.docsTool": "gogetdoc",
}
亲测有效原文：https://www.cnblogs.com/yylingyao/p/11395296.html