如何使用 JSON 路径提取器过滤后从列表中 return 单个值？

Question

使用下面的示例测试 url 作为参考，我只想 return 结果中的一个值。

http://jsonpath.herokuapp.com/?path=$..book[?(@.price%20%3C=%20$[%27expensive%27])]

尝试在最后应用 [:1] 它不起作用

Answer 1

最简单的选择就是使用 JSON Extractor:

的“匹配号”字段

• -1 - 您将获得两场比赛

   inexpensive_1={"category":"reference","title":"Sayings of the Century","author":"Nigel Rees","price":8.95}
   inexpensive_2={"category":"fiction","title":"Moby Dick","author":"Herman Melville","price":8.99,"isbn":"0-553-21311-3"}
   inexpensive_matchNr=2
  

• 1 - 您将获得第一场比赛

   inexpensive={"category":"reference","title":"Sayings of the Century","author":"Nigel Rees","price":8.95}
  

• 2 - 您将获得第二场比赛：

   inexpensive={"category":"fiction","title":"Moby Dick","author":"Herman Melville","price":8.99,"isbn":"0-553-21311-3"}
  

• 0 - 您将获得随机匹配

或者您可以选择 JSON JMESPath Extractor which has pipe expressions:

store.book[?price<`10`] | [0]