request.setCharset(AlipayConfig.input_charset);
request.setParameters(generatNameValuePair(sPara));
request.setUrl(gateway+"_input_charset="+AlipayConfig.input_charset);
HttpResponse response = httpProtocolHandler.execute(request);
if (response == null) {
return null;
}
String strResult = response.getStringResult();
return strResult;
}