HttpURLConnection

来源：互联网发布：golang mgo 编辑：程序博客网时间：2024/06/08 07:34
public class MainActivity extends Activity {    private ListView lv;    private String urlpath="http://172.17.29.120/localuser/ljy/data/data.json";    private List<MyDate> list;    private Handler handler=new Handler(){        public void dispatchMessage(Message msg) {            switch (msg.what) {            case 0:                String result=(String) msg.obj;                Gson gson = new Gson();                User user = gson.fromJson(result, User.class);                list=user.data;                MyAdapter adapter = new MyAdapter(list,MainActivity.this);                lv.setAdapter(adapter);                break;            default:                break;            }        };    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        lv = (ListView) findViewById(R.id.lv);        getResult();    }    public void getResult(){        new Thread(){            public void run() {                try {                    URL url = new URL(urlpath);                    HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();                    httpURLConnection.setConnectTimeout(5000);                    httpURLConnection.setReadTimeout(5000);                    httpURLConnection.setRequestMethod("GET");                    httpURLConnection.connect();                    int code = httpURLConnection.getResponseCode();                    if (code==200) {                        InputStream stream = httpURLConnection.getInputStream();                        int len=0;                        byte[] by=new byte[1024];                        StringBuffer stringBuffer=new StringBuffer();                        while((len=stream.read(by))!=-1){                            stringBuffer.append(new String(by, 0, len,"gbk"));                            String result = stringBuffer.toString();                            Message message = new Message();                            message.what=0;                            message.obj=result;                            handler.sendMessage(message);                        }                    }                }  catch (Exception e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            };        }.start();    }}
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