1.JAR包简介

要使程序可以运行必须引入JSON-lib包，JSON-lib包同时依赖于以下的JAR包：

1.commons-lang.jar

2.commons-beanutils.jar

3.commons-collections.jar

4.commons-logging.jar

5.ezmorph.jar

6.json-lib-2.2.2-jdk15.jar

JSON-lib包是一个beans,collections,maps,java arrays 和XML和JSON互相转换的包。在本例中，我们将使用JSONObject类创建JSONObject对象，然后我们打印这些对象的值。为了使用JSONObject对象，我们要引入"net.sf.json"包。为了给对象添加元素，我们要使用put()方法。

2.1.实例1

输出结果

jsonObject：{"username":"huangwuyi","sex":"男","QQ":"413425430","Min.score":99,"nickname":"梦中心境"}

是否为数组:false，

是否为空:false，

isNullObject:false添加属性后的对象：

{"username":"huangwuyi",

"sex":"男",

"QQ":"413425430",

"Min.score":99,"nickname":"梦中心境",

"address":"福建省厦门市"}

{"username":"huangwuyi","sex":"男","QQ":"413425430","Min.score":99,"nickname":"梦中心境",

"address":"福建省厦门市","jsonArray":["this is a jsonArray value","another jsonArray value"]}

返回一个JSONArray对象：["this is a jsonArray value","another jsonArray value"]

结果={"username":"huangwuyi","sex":"男",

"QQ":"413425430","Min.score":99,"nickname":"梦中心境","address":"福建省厦门市",

"jsonArray":["this is a jsonArray value",

"another jsonArray value"]}username==>huangwuyiqq=413425430

2.2.实例2.

输出结果：

jsonObj0:{"name0":"zhangsan","sex1":"female"

}jsonObj:{"name":"xuwei","sex":"male"}jsonObj2:

{"item0":{"name0":"zhangsan","sex1":"female"},

"item1":

{"name":"xuwei","sex":"male"}}jsonObj3:{"j3":

{"item0":{"name0":"zhangsan","sex1":"female"}

,"item1":{"name":"xuwei","sex":"male"}}}

jsonArray:[{"name":"xuwei","sex":"male"}]

jsonObj4:{"weather":

[{"name":"xuwei","sex":"male"}]}

以上所述是小编给大家介绍的JSONObject与JSONArray的使用知识，希望对大家有所帮助，如果大家想了解更多内容敬请关注服务器之家网站！