这篇文章给大家分享的是有关HttpURLConnection和okHttp如何获取网络数据的内容。小编觉得挺实用的,因此分享给大家做个参考,一起跟随小编过来看看吧。
代码示例
xml如下:
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_net" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.example.waterlamp.NetActivity"> <Button android:id="@+id/okhttp" android:text="okhttp请求" android:layout_width="150dp" android:layout_height="37dp" android:layout_alignBottom="@+id/http" android:layout_alignParentEnd="true" android:layout_alignParentTop="true" /> <Button android:id="@+id/http" android:text="HTTP请求" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_alignParentStart="true" /> <ScrollView android:layout_width="match_parent" android:layout_height="match_parent" android:layout_alignParentStart="true" android:layout_below="@+id/okhttp" android:layout_alignParentBottom="true" android:layout_alignParentEnd="true" > <TextView android:id="@+id/stringData" android:layout_width="match_parent" android:layout_height="match_parent" /> </ScrollView> </RelativeLayout>
activity如下:
public class NetActivity extends AppCompatActivity implements View.OnClickListener{ private Button http,okhttp; private TextView stringData; private String web="https://www.baidu.com"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_net); http= (Button) findViewById(R.id.http); okhttp= (Button) findViewById(R.id.okhttp); stringData= (TextView) findViewById(R.id.stringData); http.setOnClickListener(this); okhttp.setOnClickListener(this); } @Override public void onClick(View v) { switch (v.getId()){ case R.id.http: sendRequestWithHttpURLConnection(); break; case R.id.okhttp: sendRequestWithokHttp(); break; } } private void sendRequestWithHttpURLConnection(){ new Thread(new Runnable() { @Override public void run() { HttpURLConnection connection=null; BufferedReader reader=null; try { URL url=new URL(web); connection= (HttpURLConnection) url.openConnection(); connection.setRequestMethod("GET"); connection.setConnectTimeout(5000); connection.setReadTimeout(5000); InputStream in=connection.getInputStream(); reader=new BufferedReader(new InputStreamReader(in)); StringBuffer response=new StringBuffer(); String line; while ((line=reader.readLine())!=null){ response.append(line); } showRespond(response.toString()); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }finally { if (reader!=null){ try { reader.close(); } catch (IOException e) { e.printStackTrace(); } } } } }).start(); } private void showRespond(final String response) { runOnUiThread(new Runnable() { @Override public void run() { stringData.setText(response); } }); } private void sendRequestWithokHttp(){ new Thread(new Runnable() { @Override public void run() { try { OkHttpClient client=new OkHttpClient(); Request request=new Request.Builder() .url(web).build(); Response response=client.newCall(request).execute(); String str=response.body().string(); showRespond(str); } catch (IOException e) { e.printStackTrace(); } } }).start(); } }
注意:需要在加权限
1.<uses-permission android:name="android.permission.INTERNET"/>
2.okhttp3需要在gradle添加依赖
dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { exclude group: 'com.android.support', module: 'support-annotations' }) compile 'com.android.support:appcompat-v7:24.2.1' compile 'com.android.support:design:24.2.1' compile 'com.squareup.okhttp3:okhttp:3.4.1'//依赖 testCompile 'junit:junit:4.12' }
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