Android中的Http通信

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HttpURLConnection，通过WebView显示指定网页

<LinearLayout 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">    <WebView        android:id="@+id/webView"        android:layout_width="match_parent"        android:layout_height="match_parent"/></LinearLayout>

public class MainActivity extends ActionBarActivity {    private WebView webView;    private Handler handler = new Handler();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        webView = (WebView) findViewById(R.id.webView);        new HttpThread(handler,webView,"https://www.baidu.com").start();    }}public class HttpThread extends Thread{    private String url;    private Handler handler;    private WebView webView;    public HttpThread(Handler handler,WebView webView,String url){        this.handler = handler;        this.webView = webView;        this.url = url;    }    @Override    public void run() {        // TODO Auto-generated method stub        try {            URL httpUrl = new URL(url);            HttpURLConnection conn = (HttpURLConnection)httpUrl.openConnection();            conn.setRequestMethod("GET");             conn.setReadTimeout(5000);            BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));            final StringBuffer sb = new StringBuffer();            String str;            while((str = br.readLine()) != null)            {                sb.append(str);            }            //更新UI            handler.post(new Runnable() {                @Override                public void run() {                    // TODO Auto-generated method stub                    webView.loadData(sb.toString(), "text/html;charset=utf-8", null);                }            });        } catch (MalformedURLException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }     }}运行结果：![这里写图片描述](http://img.blog.csdn.net/20160223130144453)

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