如何将请求响应转换为 Ruby 嵌套哈希/数组

Question

我正在使用 HTTParty 进行外部 API 调用，如下所示：

@result = HTTParty.get('some/url')

结果是一个带有数组的 3/4 层嵌套 JSON 对象（但结果并不总是相同，有时嵌套对象更多，有时数组更多，有时没有数组等，但它总是嵌套objects 嵌套对象与数组）：

  {
  "something": "10100014",
  "something": "025MH-V0625",
  "something": null,
  "something": null,
  "something": "SALE",
  "nested": {
    "something": "DETACHED_HOUSE",
    "something": null,
    "something": "2014",
    "something": 0,
    "something": 138,
    "something": 0,
    "something": null,
    "something": "A2010",
    "something": "M2",
    "nested": {
      "something": "Tværagervej",
      "something": "34A",
      "something": "",
      "something": null,
      "something": "København S",
      "something": "2300",
      "something": "DK"
    }
    ...
}

现在我需要迭代结果的键/值（包括嵌套的键/值），但是当我这样做时：

@result.respond_to?(:each)

或

@result["nested"].respond_to?(:each)

我收到了false。我也试过：

@n_result = @result.to_json

和

@n_result = JSON.parse(@result)

但在这两种情况下我都得到了false。有什么想法吗？

Answer 1

此响应似乎不是有效的 JSON，缺少 { 和 }。 JSON.parse 没有返回任何异常吗？我试过离线：

@result = %Q{
  {
    "something": "10100014",
    "something": "025MH-V0625",
    "something": null,
    "something": null,
    "something": "SALE",
    "nested": {
      "something": "DETACHED_HOUSE",
      "something": null,
      "something": "2014",
      "something": 0,
      "something": 138,
      "something": 0,
      "something": null,
      "something": "A2010",
      "something": "M2",
      "nested": {
        "something": "Tværagervej",
        "something": "34A",
        "something": "",
        "something": null,
        "something": "København S",
        "something": "2300",
        "something": "DK"
      }
      }
  }
}

然后：

@result_r = JSON.parse(@result)

返回：

 => {"something"=>"SALE", "nested"=>{"something"=>"M2", "nested"=>{"something"=>"DK"}}}

当然已经跳过了重复的键。

让你试试：

@result_r = JSON.parse("{%s}" % @result)