VS Code 安装 Go 插件、自定义扩展配置、断点调试

1. 安装插件

使用快捷键 Ctrl+Shift+X 打开插件安装页面，安装 Go 插件。

2. 自定义扩展配置

使用快捷键 Ctrl+, 打开自定义配置页，编辑 settings.json ，定义与 Go 扩展相关的配置项。

{
    
    
    "editor.formatOnSave": true,
    "files.autoSave": "onFocusChange",
    "go.buildOnSave": "workspace",
    "go.lintOnSave": "package",
    "go.vetOnSave": "package",
    "go.buildFlags": [],
    "go.lintFlags": [],
    "go.vetFlags": [],
    "go.coverOnSave": false,
    "go.autocompleteUnimportedPackages": true,
    "go.useLanguageServer": true,
    "go.inferGopath": true,
    "go.docsTool": "godoc",
    "go.gocodePackageLookupMode": "go",
    "go.gotoSymbol.includeImports": true,
    "go.useCodeSnippetsOnFunctionSuggest": true,
    "go.useCodeSnippetsOnFunctionSuggestWithoutType": true,
    "go.formatTool": "goreturns",
    "go.gocodeAutoBuild": false,
    "go.liveErrors": {
    
    
        "enabled": true,
        "delay": 0
    },
    "go.gopath": "/data/go",
    "go.goroot": "/usr/local/go/1.12.7/libexec"
}

3. 安装依赖

第一次编辑完 Go 代码保存的时候， VS Code 会提示需要安装依赖，点击 Install All 进行安装。如果遇到墙的问题，则需要手动安装依赖，需要先下载依赖源码，再进行安装。

go get -u -v github.com/ramya-rao-a/go-outline
go get -u -v github.com/acroca/go-symbols
go get -u -v github.com/mdempsky/gocode
go get -u -v github.com/rogpeppe/godef
go get -u -v golang.org/x/tools/cmd/godoc
go get -u -v github.com/zmb3/gogetdoc
go get -u -v golang.org/x/lint/golint
go get -u -v github.com/fatih/gomodifytags
go get -u -v golang.org/x/tools/cmd/gorename
go get -u -v sourcegraph.com/sqs/goreturns
go get -u -v golang.org/x/tools/cmd/goimports
go get -u -v github.com/cweill/gotests/...
go get -u -v golang.org/x/tools/cmd/guru
go get -u -v github.com/josharian/impl
go get -u -v github.com/haya14busa/goplay/cmd/goplay
go get -u -v github.com/uudashr/gopkgs/cmd/gopkgs
go get -u -v github.com/davidrjenni/reftools/cmd/fillstruct
go get -u -v github.com/alecthomas/gometalinter
gometalinter --install

部分依赖源码地址：

• golang.org/x/tools
• golang.org/x/lint
• golang.org/x/xerrors

4. 断点调试

在项目根目录下创建 .vscode/lauch.json 并配置调试参数：

{
    
    
    "version": "0.2.0",
    "configurations": [
        {
    
    
            "name": "gotest",
            "type": "go",
            "request": "launch",
            "mode": "debug",
            "remotePath": "",
            "port": 10550,
            "host": "127.0.0.1",
            "program": "/data/go/src/test/main.go",
            "env": {
    
    
                "GOPATH": "/data/go"
            },
            "args": [],
            "showLog": true
        }
    ]
}

在项目文件中打断点，按 F5 开始进行断点调试。
如果遇到报错：

could not launch process: executables built by Go 1.11 or later need Delve built by Go 1.11 or later

升级安装 delve

go get -u github.com/go-delve/delve/cmd/dlv