学步园

public static byte[] readStream(InputStream inputStream) throws Exception {
byte[] buffer = new byte[1024];
int len = -1;
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

while ((len = inputStream.read(buffer)) != -1) {
byteArrayOutputStream.write(buffer, 0, len);
}

inputStream.close();
byteArrayOutputStream.close();
return byteArrayOutputStream.toByteArray();
}

public static String testGetHtml(String urlpath) throws Exception {
URL url = new URL(urlpath);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(6 * 1000);
conn.setRequestMethod("GET");

if (conn.getResponseCode() == 200) {
InputStream inputStream = conn.getInputStream();
byte[] data = readStream(inputStream);
String html = new String(data);
return html;
}
return null;
}