JSON 信息抽取类库：JsonPath
jopen
10年前
JsonPath 对于 JSON 来说相当于 XPATH 对于 XML。这是一个简单的从文档中抽取指定信息的工具，提供多种语言实现版本，包括：Javascript, Java, Python 和 PHP。
给定以下JSON字符串：
{ "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, "isbn": "0-553-21311-3" } ], "bicycle": { "color": "red", "price": 19.95 } } }读取
所有作者:
List<String> authors = JsonPath.read(json, "$.store.book[*].author");
Author of first book in store:
String author = JsonPath.read(json, "$.store.book[1].author");
所有分类="reference"的书籍
List<Object> books = JsonPath.read(json, "$.store.book[?(@.category == 'reference')]"); List<Object> books = JsonPath.read(json, "$.store.book[?]", filter(where("category").is("reference")));