准备VSCode

在官网下载最新版的VSCode:

Visual Studio Code - Code Editing. Redefined

安装Golang插件

• 打开扩展面板
  VSCode->查看->扩展
• 找到Go插件 在搜索框里输入Go, 找到第二行写有 Rich Go language support for Visual Studio Code的插件, 点击安装
• 重启编辑器

配置启动项

• 打开调试面板
  VSCode->查看->调试
• 添加调试目标
  在"没有调试"的下拉框中点击"添加配置.."
• 添加目标调试配置

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Launch",
            "type": "go",
            "request": "launch",
            "mode": "debug",
            "remotePath": "",
            "port": 2345,
            "host": "127.0.0.1",
            "program": "${fileDirname}",
            "env": {
                "GOPATH":"D:/Develop/vscodegolang"
            },
            "args": [],
            "showLog": true
        }
    ]
}

其中: "port", "host"都是go插件自动生成的
"env"为设置环境变量, 设置为你的工程目录就可以(包含bin, src的文件夹)

准备调试插件

我们使用go命令行编译调试器

go get github.com/derekparker/delve/cmd/dlv

开始调试

选中要调试的main.go, 点击F5, 既可以开始调试
调试快捷键和Visual Studio系一致

• F9 切换断点
• F10 Step over
• F11 Step in
• Shift+F11 Step out

多项目调试

在launch.json中可以添加多组调试入口, 通过调试面板中选中对应的配置开启不同目标的调试

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "client",
            "type": "go",
            "request": "launch",
            "mode": "debug",
            "remotePath": "",
            "port": 2345,
            "host": "127.0.0.1",
            "program": "${fileDirname}",
            "env": {
                "GOPATH":"D:/Develop/vscodegolang"
            },
            "args": [],
            "showLog": true
        },

        {
            "name": "server",
            "type": "go",
            "request": "launch",
            "mode": "debug",
            "remotePath": "",
            "port": 2345,
            "host": "127.0.0.1",
            "program": "${workspaceRoot}/src/server",
            "env": {
                "GOPATH":"D:/Develop/vscodegolang"
            },
            "args": [],
            "showLog": true
        }
    ]
}

"program"中的"${fileDirname}"是以当前选中文件作为启动点

更建议使用"program"的"${workspaceRoot}", 以包名作为启动点的方式进行配置