android 用HttpURLConnection读网络

网络上很多关于httpUrlconnection的例子， 

  void getInput(){   
        try
        {
        URL url = new URL("http://www.google.cn/");
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setDoInput(true);
        conn.setConnectTimeout(10000);
        conn.setRequestMethod("GET");
        conn.setRequestProperty("accept", "*/*");
        String location = conn.getRequestProperty("location");
        int resCode = conn.getResponseCode();
        conn.connect();
        InputStream stream = conn.getInputStream();
        byte[]  data=new byte[102400];
        int length=stream.read(data);
        String str=new String(data,0,length);      
        conn.disconnect();
        System.out.println(str);
        stream.close();
        }
        catch(Exception ee)
        {
            System.out.print("ee:"+ee.getMessage());           
        }
    }

只是要注意的是配置一个权限，AndroidManifest.xml 中应该加入如下节点。
        </activity>
    </application>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>
可以把AndroidManifest.xml open with manifest editor 来编辑 在permissions中add uses-permission，然后再在name中选择android.permission.INTERNET，然后save就ok了。