语法：

需要的jar包：

commons-lang-2.6.jarjson-path-0.8.1.jarjson-smart-1.1.1.jar

对于如下的json，通过实例介绍JsonPath的使用

{ "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    }  }}

代码：

private static void jsonPathTest() {	JSONObject json = jsonTest();//调用自定义的jsonTest()方法获得json对象，生成上面的json		//输出book[0]的author值	String author = JsonPath.read(json, "$.store.book[0].author");		//输出全部author的值，使用Iterator迭代	List<String> authors = JsonPath.read(json, "$.store.book[*].author");		//输出book[*]中category == ‘reference‘的book	List<Object> books = JsonPath.read(json, "$.store.book[?(@.category == ‘reference‘)]");						//输出book[*]中price>10的book	List<Object> books = JsonPath.read(json, "$.store.book[?(@.price>10)]");		//输出book[*]中含有isbn元素的book	List<Object> books = JsonPath.read(json, "$.store.book[?(@.isbn)]");		//输出该json中所有price的值	List<Double> prices = JsonPath.read(json, "$..price");		//可以提前编辑一个路径，并多次使用它	JsonPath path = JsonPath.compile("$.store.book[*]"); 	List<Object> books = path.read(json);	}