jsonpath用法示例

假设我们有以下 JSON 数据：

{
  "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
    }
  }
}

以下是 JSONPath 的一些示例用法：

- 获取所有书的作者：

$.store.book[*].author

- 获取第一本书的作者：

$.store.book[0].author

- 获取所有书中价格低于 10 的书：

$.store.book[?(@.price < 10)].title

- 获取所有分类为 fiction 的书的作者：

$.store.book[?(@.category == 'fiction')].author

- 获取红色自行车的价格：

$.store.bicycle.price