Java测试开发--JSONPath、JSONArray、JSONObject使用（十）

一、Maven项目，pom.xml文件中导入

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.75</version>
        </dependency>

二、JSONPath 使用时，注意绝对路径和相对路径，实例如下

{ "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
    }
  }
}

上面一段json数据，获取价格字段的值

String  jsonStr = "...."

绝对路径

List<Double> prices =  (List<Double>) JSONPath.read(jsonStr, "$.store.book.price");

相对路径

List<String> names =  (List<String>) JSONPath.read(jsonStr, "..price");

三、JSON转map

String json="{\"msg\":\"登录成功\",\"uid\":\"9CC972DFA2D4481F89841A46FD1B3E7B\",\"code\":\"1\"}";

Map map = JSON.parseObject(json,Map.class);
System.out.println("map==="+map.get("uid"));