无法将Blazor WASM部署到Azure静态Web应用生产槽，始终部署到预览槽

• 尝试通过Visual Studio和GitHub CI/CD将Blazor WASM发布到Azure静态Web应用生产环境，但所有发布操作均部署至预览环境
• 已尝试手动编辑yml文件（结果创建了名为production的新预览槽）、GitHub强制合并（未触发生产部署），均无法部署到生产槽

原yml文件：

name: Build and deploy .NET Core application to Web App HspBlazorWasmClient
on:
  pull_request:
    types:
    - opened
    - synchronize
    - reopened
    - closed
    branches:
    - master
  push:
    branches:
    - master
env:
  AZURE_STATIC_WEBAPP_NAME: HspBlazorWasmClient
  APP_DIRECTORY: HspBlazorWasm.Client
  #API_DIRECTORY: HspBlazorWasm
  OUTPUT: wwwroot
  DEPLOYMENT_ENVIRONMENT: Production
jobs:
  build_and_deploy_job:
    if: github.event_name == 'push' || (github.event_name == 'pull_request' && github.event.action != 'closed')
    name: Build and Deploy Job
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
      with:
        submodules: true
    - id: builddeploy
      name: Build And Deploy
      uses: Azure/static-web-apps-deploy@v1
      with:
        azure_static_web_apps_api_token: ${{ secrets.HspBlazorWasmClient_SPN }}
        repo_token: ${{ secrets.GITHUB_TOKEN }}
        action: upload
        deployment_environment: ${{env.DEPLOYMENT_ENVIRONMENT}}
        app_location: ${{ env.APP_DIRECTORY }}
        #api_location: ${{ env.API_DIRECTORY }}
        output_location: ${{ env.OUTPUT }}
  close_pull_request_job:
    if: github.event_name == 'pull_request' && github.event.action == 'closed'
    name: Close Pull Request Job
    runs-on: ubuntu-latest
    steps:
    - id: closepullrequest
      name: Close Pull Request
      uses: Azure/static-web-apps-deploy@v1
      with:
        azure_static_web_apps_api_token: ${{ secrets.HspBlazorWasmClient_SPN }}
        action: close
        repo_token: ${{ secrets.GITHUB_TOKEN }}

核心问题：Azure静态Web Apps的生产槽不需要指定deployment_environment参数，当显式设置该参数时，系统会将其识别为预览环境——哪怕名称是Production，这就是你创建出同名预览槽的原因。

具体修改步骤 #

1. 移除全局环境变量DEPLOYMENT_ENVIRONMENT: Production
2. 拆分任务逻辑，分别处理push到master分支（生产部署）和pull_request（预览部署）的场景：
   • Push到master时，不配置deployment_environment，直接部署到生产槽
   • PR事件触发时，指定带PR编号的预览环境名称，确保每个PR对应独立预览槽

修改后的完整yml文件 #

name: Build and deploy .NET Core application to Web App HspBlazorWasmClient
on:
  pull_request:
    types:
    - opened
    - synchronize
    - reopened
    - closed
    branches:
    - master
  push:
    branches:
    - master
env:
  AZURE_STATIC_WEBAPP_NAME: HspBlazorWasmClient
  APP_DIRECTORY: HspBlazorWasm.Client
  #API_DIRECTORY: HspBlazorWasm
  OUTPUT: wwwroot
jobs:
  build_and_deploy_job:
    if: github.event_name == 'push' || (github.event_name == 'pull_request' && github.event.action != 'closed')
    name: Build and Deploy Job
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
      with:
        submodules: true
    - id: builddeploy
      name: Build And Deploy
      uses: Azure/static-web-apps-deploy@v1
      with:
        azure_static_web_apps_api_token: ${{ secrets.HspBlazorWasmClient_SPN }}
        repo_token: ${{ secrets.GITHUB_TOKEN }}
        action: upload
        # 仅在PR事件时指定预览环境，自动关联PR编号
        ${{ if eq(github.event_name, 'pull_request') }}:
          deployment_environment: pr-${{ github.event.number }}
        app_location: ${{ env.APP_DIRECTORY }}
        #api_location: ${{ env.API_DIRECTORY }}
        output_location: ${{ env.OUTPUT }}
  close_pull_request_job:
    if: github.event_name == 'pull_request' && github.event.action == 'closed'
    name: Close Pull Request Job
    runs-on: ubuntu-latest
    steps:
    - id: closepullrequest
      name: Close Pull Request
      uses: Azure/static-web-apps-deploy@v1
      with:
        azure_static_web_apps_api_token: ${{ secrets.HspBlazorWasmClient_SPN }}
        action: close
        repo_token: ${{ secrets.GITHUB_TOKEN }}
        # 关闭PR时清理对应预览环境
        deployment_environment: pr-${{ github.event.number }}

效果说明 #

• 生产部署：代码push到master分支时，Azure SWA会自动部署到生产槽
• 预览部署：每个Pull Request会生成独立的预览环境（名称格式为pr-xxx），关闭PR时会自动清理该预览环境

内容的提问来源于stack exchange，提问作者LHill