Azure DevOps YAML流水线解析报错While parsing a block mapping问题排查

问题原因 #

这个YAML解析报错的触发点是第一个PublishBuildArtifacts@1任务的PathtoPublish字段值缺少闭合双引号：

# 错误写法，末尾缺双引号
PathtoPublish: "Webparts/sharepoint/solution/webpart.sppkg

未闭合的引号导致YAML解析器把后续行的内容都识别为当前字符串的一部分，无法正常解析下一个键ArtifactName，所以抛出「解析块映射时未找到预期的键」的报错。

修复后完整配置 #

只需要给上述字段补全闭合双引号即可：

parameters:
  - name: azureSubscription
    type: string
  - name: cdnStorageAccount
    type: string
  - name: cdnResourceGroupName
    type: string
  - name: cdnEndpointName
    type: string
  - name: cdnProfileName
    type: string
  - name: sourceBranchTrigger
    type: string

stages:
  - stage: build_stage
    displayName: "Build"
    jobs:
      - job: build_job
        steps:
          - task: UseNode@1
            displayName: "Use Node 8.x"
            inputs:
              version: "8.x"

          - task: CmdLine@2
            displayName: "Build"
            inputs:
              script: |
                cd ./Webparts
                npm run build-server

          - task: PublishBuildArtifacts@1
            displayName: "Publish Build Artifact (Apps)"
            condition: ne(variables['Build.Reason'], 'PullRequest')
            inputs:
              PathtoPublish: "Webparts/sharepoint/solution/webpart.sppkg"
              ArtifactName: Apps

          - task: PublishBuildArtifacts@1
            displayName: "Publish Build Artifact (Scripts)"
            condition: ne(variables['Build.Reason'], 'PullRequest')
            inputs:
              PathtoPublish: "Webparts/temp/deploy"
              ArtifactName: Scripts

内容的提问来源于stack exchange，提问作者Sibeesh Venu