Elixir 消化httpotion反应的长生不老药

我做了一个HTTPotion，收到了与此类似的响应

"{\"total\": 1564, \"businesses\": [{\"review_count\": 139}, {\"review_count\": 154}]}"

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这是什么类型的数据？如何访问第一次审阅计数？

这是json数据。您可以使用来解码它

iex()> response = "{\"total\": 1564, \"businesses\": [{\"review_count\": 139}, {\"review_count\": 154}]}"
"{\"total\": 1564, \"businesses\": [{\"review_count\": 139}, {\"review_count\": 154}]}"

iex()> response |> Poison.decode! |> Map.get("businesses") |> List.first |> Map.get("review_count")
139

或者用一种较短的方式：

iex()> response |> Poison.decode! |> get_in(["businesses", Access.at(0), "review_count"])
139

---

这是json数据。您可以使用来解码它

iex()> response = "{\"total\": 1564, \"businesses\": [{\"review_count\": 139}, {\"review_count\": 154}]}"
"{\"total\": 1564, \"businesses\": [{\"review_count\": 139}, {\"review_count\": 154}]}"

iex()> response |> Poison.decode! |> Map.get("businesses") |> List.first |> Map.get("review_count")
139

或者用一种较短的方式：

iex()> response |> Poison.decode! |> get_in(["businesses", Access.at(0), "review_count"])
139