该工具类值只实现了HTTP的get方法,参考get方法可轻松实现post、put、delete等方法,下面是get方法的实现
public class SimpleHttpClient {
private static final String TAG = SimpleHttpClient.class.getSimpleName();
public static int POOL_SIZE = 4;
private static int READ_TIME_OUT = 10 * 1000;
private static int CONNECT_TIME_OUT = 10 * 1000;
private static final String ENCODE = "UTF-8";
private static ExecutorService sExecutorService;
static {
sExecutorService = Executors.newFixedThreadPool(POOL_SIZE);
}
public interface HttpCallback <T> {
public void onSuccess(T response);
public void onError(T error);
}
public static void doGet(String url, final HttpCallback<String> callback) {
final String _url = url;
sExecutorService.execute(new Runnable() {
@Override
public void run() {
URL url = null;
try {
url = new URL(_url);
} catch (MalformedURLException e) {
e.printStackTrace();
callback.onError(e.getMessage());
return;
}
BufferedReader bufferedReader = null;
StringBuffer response = new StringBuffer();
HttpURLConnection urlConnection = null;
try {
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setDoInput(true);
urlConnection.setReadTimeout(READ_TIME_OUT);
urlConnection.setConnectTimeout(CONNECT_TIME_OUT);
urlConnection.setRequestMethod("GET");
urlConnection.setUseCaches(false);
urlConnection.setRequestProperty("connection", "close");
urlConnection.connect();
int code = urlConnection.getResponseCode();
if (code >= 200 && code < 400) {
bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream(),ENCODE));
String line = null;
while ((line = bufferedReader.readLine()) != null) {
response.append(line);
}
callback.onSuccess(response.toString());
} else {
bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getErrorStream(),ENCODE));
String line = null;
while ((line = bufferedReader.readLine()) != null) {
response.append(line);
}
callback.onError(response.toString());
}
} catch (SocketTimeoutException e) {
e.printStackTrace();
callback.onError(e.getMessage());
} catch (IOException e) {
e.printStackTrace();
callback.onError(e.getMessage());
} finally {
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
});
}
}
测试:
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void test(View view) {
String url = "http://www.weather.com.cn/adat/sk/101010100.html";
SimpleHttpClient.doGet(url, new HttpCallback<String>() {
@Override
public void onSuccess(String respose) {
System.out.println("sucess:" + respose);
}
@Override
public void onError(String error) {
System.out.println("error:" + error);
}
});
}
}
<pre name="code" class="java"><strong>布局文件:</strong>
<strong></strong><pre name="code" class="html"><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.httpdemos.MainActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/textView1"
android:layout_marginTop="132dp"
android:layout_toRightOf="@+id/textView1"
android:onClick="test"
android:text="Button" />
</RelativeLayout>
权限:
<uses-permission android:name="android.permission.INTERNET" />
测试结果: