Azure Pipelines设置变量时出现块映射解析错误求助

错误原因 #

问题并非缩进错误，而是YAML字符串嵌套单引号导致的解析失败。你的变量值使用单引号包裹，但内部表达式里的parameters['environmentCode']也用了单引号，YAML会将第一个内部单引号识别为整个字符串的结束标记，后续内容被判定为无效的YAML结构，最终触发解析错误，报错行号因解析中断出现偏差。

修复方案 #

有两种可行的修复方式：

方式1：改用双引号包裹变量值 #

将包含嵌套单引号的value外层改为双引号，内部单引号可正常使用：

jobs:
- job: 'Deploy_Management_Resources'
  pool: 
    vmImage: ${{ parameters.buildAgent }}
  variables:
    - name: managementResourceDNSPrivateResolverName
      value: "acme-$[ lower(parameters['environmentCode']) ]-$[ lower(variables['resourceLocationShort']) ]-private-dns-resolver"
    - name: managementResourceGroupManagement 
      value: 'acme-infrastructure-rg-management'
    - name: managementResourceRouteTableName
      value: "acme-$[ lower(variables['subscriptionCode']) ]-$[ lower(variables['resourceLocationShort']) ]-route-table"
    - name: managementResourceVirtualNetworkName
      value: "acme-$[ lower(variables['subscriptionCode']) ]-$[ lower(variables['resourceLocationShort']) ]-vnet-internal-mng"

方式2：转义内部单引号 #

在YAML中，用两个连续单引号''表示一个实际的单引号，对内部表达式里的单引号进行转义：

jobs:
- job: 'Deploy_Management_Resources'
  pool: 
    vmImage: ${{ parameters.buildAgent }}
  variables:
    - name: managementResourceDNSPrivateResolverName
      value: 'acme-$[ lower(parameters[''environmentCode'']) ]-$[ lower(variables[''resourceLocationShort'']) ]-private-dns-resolver'
    - name: managementResourceGroupManagement 
      value: 'acme-infrastructure-rg-management'
    - name: managementResourceRouteTableName
      value: 'acme-$[ lower(variables[''subscriptionCode'']) ]-$[ lower(variables[''resourceLocationShort'']) ]-route-table'
    - name: managementResourceVirtualNetworkName
      value: 'acme-$[ lower(variables[''subscriptionCode'']) ]-$[ lower(variables[''resourceLocationShort'']) ]-vnet-internal-mng'

内容的提问来源于stack exchange，提问作者johubb