android中json得解析

今天按照書上試了試json的解析

這裏使用了兩種方法來對json數據進行解析

1.利用JSONObject來解析 2.利用谷歌的開源庫GSON來進行解析

1、利用JSONObject來進行解析

 在服務器下創建json文件get_data.json以下:

{
"employees": [
{ "firstName":"Bill" , "lastName":"Gates" },
{ "firstName":"George" , "lastName":"Bush" },
{ "firstName":"Thomas" , "lastName":"Carter" }
],
"result":[
{"id":"5","version":"5.5","name":"Angry Birds"},
{"id":"6","version":"7.0","name":"Clash of Clans"},
{"id":"7","version":"3.5","name":"Hey Day"}
]
}

而後再項目中創建代碼：
主要代碼以下：

..................................

private void sendRequestWithHttpClient() {

// TODO Auto-generated method stub

new Thread(new Runnable() {

 

@Override

public void run() {

// TODO Auto-generated method stub

try {

HttpClient httpClient = new DefaultHttpClient();

HttpGet httpGet = new HttpGet("http://10.0.2.2/get_data.json");

HttpResponse httpResponse = httpClient.execute(httpGet);

if (httpResponse.getStatusLine().getStatusCode() == 200) {

HttpEntity entity = httpResponse.getEntity();

String response = EntityUtils.toString(entity, "utf-8");

parseJSONWithJSONObject(response);

 

}

 

} catch (Exception e) {

// TODO: handle exception

e.printStackTrace();

}

 

}

 

private void parseJSONWithJSONObject(String response) {

// TODO Auto-generated method stub

try {

JSONObject jsonObject = new JSONObject(response);

JSONArray resultArray = jsonObject.getJSONArray("result");

JSONObject subObject = resultArray.getJSONObject(0);

String id = subObject.getString("id");

String name = subObject.getString("name");

String version = subObject.getString("version");

Log.d("MainActivity", "id is " + id);

Log.d("MainActivity", "name is " + name);

Log.d("MainActivity", "version is " + version);

 

} catch (Exception e) {

// TODO: handle exception

e.printStackTrace();

}

 

}

}).start();

 

}

結果：

 

 

 

2、使用GSON來解析json

  

  創建json文件get_data2.json

 以下：

[{"id":"5","version":"5.5","name":"Angry Birds"},
{"id":"6","version":"7.0","name":"Clash of Clans"},
{"id":"7","version":"3.5","name":"Hey Day"}]

 

更改主要文件爲：

private void parseJSONWidthGSON(String response) {

// TODO Auto-generated method stub

Gson gson =new Gson();

List<App> appList = gson.fromJson(response,new TypeToken<List<App>>(){}.getType());

for (App app : appList) {

Log.d("MainActivity","id is "+app.getId());

Log.d("MainActivity","id is "+app.getName());

Log.d("MainActivity","id is "+app.getVersion());

}

 

}

 

 

結果：

。。。。。。。