为什么我在 Ruby 的 YAML 文件中得到 '`parse': (<unknown>): mapping values are not allowed in this context'答案

【问题标题】：Why am I getting '`parse': (<unknown>): mapping values are not allowed in this context' in YAML file in Ruby为什么我在 Ruby 的 YAML 文件中得到 '`parse': (<unknown>): mapping values are not allowed in this context'
【发布时间】：2014-07-16 13:25:45
【问题描述】：

尝试在 Ruby 中打开我的 Yaml 文件时出现上述错误。我已经检查了这个验证器中的 YAML，它已经通过了http://yamllint.com/。我不确定我的 YAML 有什么问题会阻止它打开。有任何想法吗？这是 YAML 文件。我正在尝试使用yml = YAML::load(File.open('servers.yml'))打开文件

---
servers:
  - ps-overture-d01
    location: ps-overture-d01
    tomcat_location: /home/tomcat/tomcat/webapps/report/
    user: tomcat
    menus:
      - Accounts Receivable
        reports:
          - Accounts Receivable Aging Report
            name: AccountsReceivableAgingReport
            location: /public/Common/Reports/Accounts_Receivable_Reports
      - Inventory
        reports:
          - Inventory Master List Report
            name: InventoryMasterListReport
            location: /public/Common/Reports/Inventory_Reports
          - Inventory Totals Report
            name: InventoryTotalsReport
            location: /public/Common/Reports/Inventory_Reports
          - Dealer Purchasing Report
            name: DealerPurchasingReport
            location: /public/Common/Reports/Inventory_Reports
          - DOA Report
            name: DOAReport
            location: /public/Common/Reports/Inventory_Reports
          - Stock Transfers Report
            name: StockTransfersReport
            location: /public/Common/Reports/Inventory_Reports
          - Removed Inventory Report
            name: RemovedInventoryReport
            location: /public/Common/Reports/Inventory_Reports
          - Inventory Order Sheet Report
            name: InventoryOrderSheetReport
            location: /public/Common/Reports/Inventory_Reports
          - Inventory Totals GMROI Report
            name: InventoryTotalsGMROIReport
            location: /public/Common/Reports/Inventory_Reports
          - Master Inventory GMROI Report
            name: MasterInventoryGMROIReport
            location: /public/Common/Reports/Inventory_Reports
          - Dead Stock Report
            name: DeadInventoryReport
            location: /public/Common/Reports/Inventory_Reports
          - Dead Stock Report Details
            name: DeadInventoryReportDetails
            location: /public/Common/Reports/Inventory_Reports
          - Negative Quantity Report
            name: NegativeInventoryQTYReport
            location: /public/Common/Reports/Inventory_Reports

【问题讨论】：

标签： ruby yaml ruby-2.0

【解决方案1】：

您的问题在于没有冒号的行：

  - ps-overture-d01
    location: ps-overture-d01

http://yamllint.com/ 所做的是将它们连接到下一行：

? "ps-overture-d01 location"
: ps-overture-d01

Ruby 的 YAML 库不会这样做，而是会引发错误。我不确定您是否打算将有问题的行连接起来，因此您需要了解如何正确调整 YAML 以提供合理的结构，或者在每一行中添加 id:？

  - id: ps-overture-d01
    location: ps-overture-d01

这是您的示例，以及我建议的更改：

---
servers:
  - id: ps-overture-d01
    location: ps-overture-d01
    tomcat_location: /home/tomcat/tomcat/webapps/report/
    user: tomcat
    menus:
      - id: Accounts Receivable
        reports:
          - id: Accounts Receivable Aging Report
            name: AccountsReceivableAgingReport
            location: /public/Common/Reports/Accounts_Receivable_Reports
      - id: Inventory
        reports:
          - id: Inventory Master List Report
            name: InventoryMasterListReport
            location: /public/Common/Reports/Inventory_Reports
          - id: Inventory Totals Report
            name: InventoryTotalsReport
            location: /public/Common/Reports/Inventory_Reports
          - id: Dealer Purchasing Report
            name: DealerPurchasingReport
            location: /public/Common/Reports/Inventory_Reports
          - id: DOA Report
            name: DOAReport
            location: /public/Common/Reports/Inventory_Reports
          - id: Stock Transfers Report
            name: StockTransfersReport
            location: /public/Common/Reports/Inventory_Reports
          - id: Removed Inventory Report
            name: RemovedInventoryReport
            location: /public/Common/Reports/Inventory_Reports
          - id: Inventory Order Sheet Report
            name: InventoryOrderSheetReport
            location: /public/Common/Reports/Inventory_Reports
          - id: Inventory Totals GMROI Report
            name: InventoryTotalsGMROIReport
            location: /public/Common/Reports/Inventory_Reports
          - id: Master Inventory GMROI Report
            name: MasterInventoryGMROIReport
            location: /public/Common/Reports/Inventory_Reports
          - id: Dead Stock Report
            name: DeadInventoryReport
            location: /public/Common/Reports/Inventory_Reports
          - id: Dead Stock Report Details
            name: DeadInventoryReportDetails
            location: /public/Common/Reports/Inventory_Reports
          - id: Negative Quantity Report
            name: NegativeInventoryQTYReport
            location: /public/Common/Reports/Inventory_Reports

【讨论】：

你能不能再举一个例子，让我看看我应该怎么做？谢谢。
谢谢，这很有帮助。你知道我可以在线查看 YAML 的任何好的资源吗？