在 JsonPath 中,['<name>' (, '<name>')] 操作符用来获取括号中指定的一个或多个子节点或值。
Java 示例:
package com.hxstrive.json_path.operators; import com.jayway.jsonpath.JsonPath; /** * [name,name,...] 符号 * @author hxstrive.com */ public class OperatorsDemo06 { public static void main(String[] args) { String json = "{" + " \"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" + "}"; Object obj = JsonPath.read(json, "$.store.bicycle['color','price']"); System.out.println(obj); } }
运行示例,输出如下:
{color=red, price=19.95}
上述示例中,使用 $.store.bicycle['color','price'] 获取 $.store.bicycle 节点中的 color 和 price 字段的值或者子节点。