docs: public static PayContractorderResult payContractorder(PayContractorder payContractorder,String key){
  		Map<String,String> map = MapUtil.objectToMap(payContractorder);
  		String sign = SignatureUtil.generateSign(map,payContractorder.getSign_type(),key);
  		payContractorder.setSign(sign);
  		String secapiPayRefundXML = XMLConverUtil.convertToXML( payContractorder);
  		HttpUriRequest httpUriRequest = RequestBuilder.post()
  				.setHeader(xmlHeader)
  				.setUri(baseURI()+ "/pay/contractorder")
  				.setEntity(new StringEntity(secapiPayRefundXML,Charset.forName("utf-8")))
  				.build();
  		return LocalHttpClient.executeXmlResult(httpUriRequest,PayContractorderResult.class,payContractorder.getSign_type(),key);
  	}