【Vscode】调试DotNet Core代码

Visual Studio作为宇宙第一的IDE，开发调试.net core app，无一能出其右，我们还需要去了解Visual Studio Code吗？答案是肯定的。

• 杀鸡焉用牛刀：就一个hello world的Console App，还需要打开Visual Studio吗？
• 画地为牢：如果开发环境换成Ubuntu或Centos等任意一个Linux发行版，调试怎么办？
• 兵贵神速：马上就要开始调试一个已有app，但是调试环境没有Visual Studio，安装是不是特别费时？甚至不支持Visual Studio,怎么办？

那么Visual Studio Code的小而美的优势就会体现出来。

1.安装Visual Studio Code

纯属混字数的，扔一个链接https://code.visualstudio.com/，下载去吧，

• windows下就是傻瓜式下一步下一步。
• 红帽系linux
  • https://code.visualstudio.com/docs/setup/linux#_rhel-fedora-and-centos-based-distributions
• debian或者ubuntu
  • https://code.visualstudio.com/docs/setup/linux#_debian-and-ubuntu-based-distributions
• MacOS
  • https://code.visualstudio.com/docs/setup/mac

2.安装.net core sdk

同样是扔一个链接https://dotnet.microsoft.com/download，页面选项卡，有4种环境

• Windows
• Linux
• MacOS
• Docker

按需选择吧

3.编码

略过

4.调试配置

假设你已经编码完成，

F5开始调试->Select Envoriment->.net core

4.1 生成并修改launch.json

然后就会创建.vscode文件夹，且创建了launch.json

{
  // Use IntelliSense to learn about possible attributes.
  // Hover to view descriptions of existing attributes.
  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
  "version": "0.2.0",
  "configurations": [
      
    {
      "name": ".NET Core Launch (web)",
      "type": "coreclr",
      "request": "launch",
      "preLaunchTask": "build",
      "program": "${workspaceFolder}/Vmware.Sphere.Api/bin/Debug/netcoreapp3.1/properties/netcoreapp3.1/Vmware.Sphere.Api.dll",
      "args": [],
      "cwd": "${workspaceFolder}/Vmware.Sphere.Api",
      "stopAtEntry": false,
      "serverReadyAction": {
        "action": "openExternally",
        "pattern": "\bNow listening on:\s+(https?://\S+)"
      },
      "env": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      },
      "sourceFileMap": {
        "/Views": "${workspaceFolder}/Views"
      }
    },
    {
      "name": ".NET Core Attach",
      "type": "coreclr",
      "request": "attach",
      "processId": "${command:pickProcess}"
    }
  ]
}

• program:调试的dll路径
• cwd:正在调试的程序的工作目录的路径。默认是当前工作区

其他属性，还想知道具体作用，鼠标悬停在launch.json的某一个属性上，就可以了解，并根据实际情况进行修改。

4.2 生成task.json

F5->Could not find the task 'build'->Configure Task->Select a task to configure->Create task.json file from temple->.Net Core

就会继续在.vscode下创建task.json

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "build",
            "command": "dotnet",
            "type": "shell",
            "args": [
                "build",
                // Ask dotnet build to generate full paths for file names.
                "/property:GenerateFullPaths=true",
                // Do not generate summary otherwise it leads to duplicate errors in Problems panel
                "/consoleloggerparameters:NoSummary"
            ],
            "group": "build",
            "presentation": {
                "reveal": "silent"
            },
            "problemMatcher": "$msCompile"
        }
    ]
}

• preLaunchTask:"build",Task to run before debug session starts.在启动调试会话之前运行的任务，说白了，就是调试之前，总得构建生成吧。然后就会触发task中lable名为build的构建任务
  • command+args=dotnet build ...

5.调试快捷键

• Continue / Pause F5
• Step Over F10
• Step Into F11
• Step Out Shift+F11
• Restart Ctrl+Shift+F5
• Stop Shift+F5
• Run (Start Without Debugging) action is triggered with Ctrl+F5

现在就可以正常调试了

• 断点
• 日志断点
• 变量监控
• 等等

参考链接

https://code.visualstudio.com/docs/editor/debugging#_launch-configurations