android http通訊——HttpURLConntection

Java代碼 

String urlpath="http://i2.sinaimg.cn/dy/dsgb/20083.jpg";    try {URL url=new URL(urlpath);HttpURLConnection con = (HttpURLConnection) url.openConnection();con.setConnectTimeout(6000);con.setRequestMethod("GET");if(con.getResponseCode()==200){byte[] imagebytes = readStreamtoBytes(con.getInputStream());File file =new File("pic.jpg");FileOutputStream fos =new FileOutputStream(file);fos.write(imagebytes);fos.close();}

Java代碼

public static byte[] readStreamtoBytes(InputStream instream) throws IOException{

   
    ByteArrayOutputStream outstream =new ByteArrayOutputStream();

   
    int len=-1;

    byte[] b = new byte[1024];

while((len = instream.read(b)) != -1){

   
outstream.write(b, 0, len);

    }

outstream.flush();

outstream.close();

instream.close();

return outstream.toByteArray();

   
    }