Question

我有一个Json对象，它有以下数据

{\ “数据\”：{\ “pdp0：\”：{\ “的recv \”：{\ “分组\”：\ “15104 \”，\ “字节\”：\ “9059817 \”} ，\ “发送\”：{\ “分组\”：\ “9480 \”，\ “字节\”：\ “1687801 \”}}，\ “gre0：\”：{\ “的recv \”：{\ “数据包\”：\ “0 \”，\ “字节\”：\ “0 \”}，\ “发送\”：{\ “分组\”：\ “0 \”，\ “字节\”：\ “0 \”}}，\ “tunl0：\”：{\ “的recv \”：{\ “分组\”：\ “0 \”，\ “字节\”：\ “0 \”}，\“发送\ “：{\” 分组\ “：\” 0 \”，\ “字节\”：\ “0 \”}}，\ “USB0：\”：{\ “的recv \”：{\ “分组\” ：\ “0 \”，\ “字节\”：\ “0 \”}，\ “发送\”：{\ “分组\”：\ “0 \”，\ “字节\”：\ “0 \” }}，\ “LO：\”：{\ “的recv \”：{\ “分组\”：\ “48300 \”，\ “字节\”：\ “2616703 \”}，\ “发送\”：{ \ “分组\”：\ “48300 \”，\ “字节\”：\ “2616703 \”}}}，\ “VER \”：\ “1.4 \”，\ “类型\”：\ “NETDEV \” ，\“date \”：\“2011-4-13 14:10:21 \”，\“user \”：\“351863047772880 \”，\“time_stamp \”：1305313821541}

如果我想访问数据中的数据 - > pdp0-＆gt; recv-＆gt;数据包（此处值为15104）我应该使用哪个函数？

感谢萨拉

Answer 1

您可以使用普通的旧org.json包来获取嵌套对象：

int packets = new JSONObject(str) // str is your JSON string as above
                 .getJSONObject("data")
                 .getJSONObject("pdp0")
                 .getJSONObject("recv")
                 .getInt("packets");

API详细信息：http://www.json.org/javadoc/org/json/JSONObject.html

Answer 2

您可以使用Aleadam建议的内容。但是，您最好使用GSON for java objects，因为它允许您将JSON与Java对象进行序列化和反序列化。

访问JSON对象中的值

2 个答案: