//待请求参数数组
Map<String, String> sPara = buildRequestPara(sParaTemp);
HttpProtocolHandler httpProtocolHandler = HttpProtocolHandler.getInstance();
HttpRequest request = new HttpRequest(HttpResultType.BYTES);
//设置编码集
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;
}