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字符串数组我在遇到此JSON反序列化的烦恼:JSON来使用GSON
[{"categorium":
{"created_at":"2011-06-09T08:57:41Z","c1":"rete stradale","updated_at":"2011-06-09T08:57:41Z","id":1}},
{"categorium":{"created_at":"2011-06-09T13:50:29Z","c1":"servizi pubblici","updated_at":"2011-06-09T13:50:29Z","id":2}},
{"categorium":{"created_at":"2011-06-09T13:50:37Z","c1":"illuminazione","updated_at":"2011-06-09T13:50:37Z","id":3}},
{"categorium":{"created_at":"2011-06-09T13:50:46Z","c1":"inquinamento","updated_at":"2011-06-09T13:50:46Z","id":4}}
]
我如何可以推断所有的“C1”的属性,所以我可以返回他们的字符串数组?
* UPDATE:解决方案*
public class getElements {
String [] getEl (String url) throws ClientProtocolException, IOException {
Categoria c = null;
Categoria[] cArray = null;
String [] c1Array = null;
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet("http://10.0.2.2:3000/"+url);
HttpResponse response = client.execute(request);
HttpEntity entity = response.getEntity();
String stringa = "{\"categorium\":{\"created_at\":\"2011-06-09T08:57:41Z\",\"c1\":\"rete stradale\",\"updated_at\":\"2011-06-09T08:57:41Z\",\"id\":1}}";
Gson json=new Gson();
try{
cArray=json.fromJson(stringa, Categoria[].class);
Log.i("ELEMENTO", ""+cArray);
}catch(JsonParseException e){
Log.i("error","JsonParseException");
}
c1Array = new String[cArray.length];
for (int i=0; i<cArray.length; i++) {
c1Array[i] = cArray[i].c1;
}
return c1Array;
}
}
Categorium类:
public class Categoria {
public String created_at;
public String c1;
public String updated_at;
public int id;
public Categoria() {
this.created_at = "";
this.c1="";
this.updated_at = "";
this.id = 0;
}
}
为什么不能读取所有Categoria对象,然后手动创建一个简单循环中的c1元素数组? – bezmax
我如何阅读所有这些内容?随着我写的代码,我只拿一个c1,对吧?顺便说一句... logcat给我一个JsonParseException:“entity.toString”是在字符串类型中获取Json的正确方法? –
啊,现在我明白了:) – bezmax