json 获取 java java获取json的key

import com.alibaba.fastjson.JSONObject;

public class Test {
    public static void main(String args[]) {
        String a = "{\"id\":\"0001\",\"name\":\"小明\",\"age\":18}";
        JSONObject jo = JSONObject.parseObject(a);
        String b = jo.get("name").toString();
        System.out.println(b); //输出为 小明
    }
}

maven的依赖包为：

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.60</version>
</dependency>