组合jsonpath查询以返回筛选数组的第一个对象时出现问题
使用、和以下JSON:组合jsonpath查询以返回筛选数组的第一个对象时出现问题,jsonpath,Jsonpath,使用、和以下JSON: { "store": { "book": [ { "category": "reference", "author": "Nigel Rees", "title": "Sayings of the Century", "price": 8.95 }, { "category": "fiction", "author": "Evelyn Waugh",
{ "store": {
"book": [
{ "category": "reference",
"author": "Nigel Rees",
"title": "Sayings of the Century",
"price": 8.95
},
{ "category": "fiction",
"author": "Evelyn Waugh",
"title": "Sword of Honour",
"price": 12.99
},
{ "category": "fiction",
"author": "Herman Melville",
"title": "Moby Dick",
"isbn": "0-553-21311-3",
"price": 8.99
},
{ "category": "fiction",
"author": "J. R. R. Tolkien",
"title": "The Lord of the Rings",
"isbn": "0-395-19395-8",
"price": 22.99
}
],
"bicycle": {
"color": "red",
"price": 19.95
}
}
}
我想编写一个过滤类别的查询,例如“虚构”,然后只返回第一个元素。我似乎不太明白
例如,$…book[?(@.category==“fiction”)]
将返回一个包含3本书的数组,但我只想要第一本书:
{ "category": "fiction",
"author": "Evelyn Waugh",
"title": "Sword of Honour",
"price": 12.99
}
能做到吗??最明显的事情似乎是在末尾添加一个“[0]”,但它不起作用。我检查了分析网站(注意:这是测试结果): 查找[0]索引确实有效。站点只接受jsonPath参数(jsonObj,查询字符串)中的内容,因此索引引用必须超出此评估范围,而站点不会这样做
jsonPath(foo, '$..book[?(@.category == "fiction")]')[0]
谢谢,但这不是我想要的-jsonPath返回一个数组,[0]访问数组的第一个元素。我需要jsonPath来过滤一个元素。我无法直接访问阵列。