解析json

关于Jsonhttp://www.json.org/

Json解析库gson: http://code.google.com/p/google-gson/

1.使用Android中的JSONObjectJSONArray解析json数据

        String strJson = "{\"students\":[{\"name\":\"Jack\",\"age\":12}, {\"name\":\"Vista\",\"age\":23}, {\"name\":\"Kaka\",\"age\":22}, {\"name\":\"Hony\",\"age\":31}]}";
try {
JSONObject jo = new JSONObject(strJson);
JSONArray jsonArray = (JSONArray) jo.get("students");
for (int i = 0; i < jsonArray.length(); ++i) {
JSONObject o = (JSONObject) jsonArray.get(i);
System.out.println("name:" + o.getString("name") + "," + "age:"
+ o.getInt("age"));
}
} catch (JSONException e) {
e.printStackTrace();
}

2.使用gson中的JsonReader解析json数据

try {
String string = "{\"class\":1, \"students\":[{\"name\":\"jack\", \"age\":21},{\"name\":\"kaka\", \"age\":21},{\"name\":\"lucy\", \"age\":21}]}";
StringReader sr = new StringReader(string);
JsonReader jr = new JsonReader(sr);
jr.beginObject();
if (jr.nextName().equals("class")) {
System.out.println("班级: " + jr.nextString());
if (jr.nextName().equals("students")) {
jr.beginArray();
while (jr.hasNext()) {
jr.beginObject();
if (jr.nextName().equals("name"))
System.out.print("姓名:" + jr.nextString());
if (jr.nextName().equals("age")) {
System.out.println(" , 年龄:" + jr.nextInt());
}
jr.endObject();
}
jr.endArray();
}
}
jr.endObject();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}



posted @ 2011-10-06 01:00  penink  阅读(77299)  评论(6编辑  收藏