Android:读取文件

...
InputStream in = conn.getInputStream();  //conn是HttpURLConnection
ByteArrayOutputStream out = new ByteArrayOutputStream();
int len = 0;
byte[] buffer = new byte[1024];

while((len = in.read(buffer)) != -1){
out.write(buffer,0,len);
}
String result = out.toString();
in.close();
out.close();
return result;