假如你存在如下 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
}
},
"expensive": 10
}JsonPah 示例：
JsonPath | 结果 |
$.store.book[*].author | 获取所有书籍的作者 |
$..author | 获取所有作者 |
$.store.* | 获取所有信息，包括书籍和自行车 |
$.store..price | 获取所有东西的价格，包括书籍和自行车 |
$..book[2] | 获取第三本书 |
$..book[-2] | 获取倒数第二本书 |
$..book[0,1] | 获取前两本书 |
$..book[:2] | 获取从索引 0（含）到索引 2（不含）的所有图书 |
$..book[1:2] | 获取从索引 1（含）到索引 2（不含）的所有书籍 |
$..book[-2:] | 获取最后两本书 |
$..book[2:] | 获取从索引 2（含）到最后的所有书籍 |
$..book[?(@.isbn)] | 获取所有有 ISBN 编号的图书 |
$.store.book[?(@.price < 10)] | 获取店内价格低于 10 的书籍 |
$..book[?(@.price <= $['expensive'])] | 获取店内所有价格小于等于 "expensive" 值的书籍 |
$..book[?(@.author =~ /.*REES/i)] | 获取与 regex 匹配的所有图书（忽略大小写） |
$..* | 获取把所有东西 |
$..book.length() | 获取书籍数量 |
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