AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do","app_id","your private_key","json","GBK","alipay_public_key","RSA2");
MybankCreditSupplychainTradePayRequest request = new MybankCreditSupplychainTradePayRequest();
request.setBizContent("{" +
"\"trade_type\":\"FACTORING\"," +
"\"request_id\":\"226601231123123_20170911121110_12345678\"," +
"\"buyer\":{" +
"\"use_type\":\"SITE\"," +
"\"ip_id\":\"226610000054341135809\"," +
"\"ip_role_id\":\"226610000054341135809\"," +
"\"site\":\"ALIPAY\"," +
"\"site_user_id\":\"2088100110011001\"," +
"\"site_login_id\":\"abc123\"" +
"    }," +
"\"pay_amount\":100.00," +
"\"out_order_no\":\"T1000112\"," +
"\"sale_pd_code\":\"10013121310001\"," +
"\"channel\":\"TYZBL\"," +
"\"ext_data\":\"{\\\"repayType\\\":\\\"1\\\"}\"" +
"  }");
MybankCreditSupplychainTradePayResponse response = alipayClient.execute(request);
if(response.isSuccess()){
System.out.println("调用成功");
} else {
System.out.println("调用失败");
}

IAopClient client = new DefaultAopClient("https://openapi.alipay.com/gateway.do", "app_id", "merchant_private_key", "json", "1.0", "RSA2", "alipay_public_key", "GBK", false);
MybankCreditSupplychainTradePayRequest  request= new MybankCreditSupplychainTradePayRequest() ;
request.BizContent="{" +
"\"trade_type\":\"FACTORING\"," +
"\"request_id\":\"226601231123123_20170911121110_12345678\"," +
"\"buyer\":{" +
"\"use_type\":\"SITE\"," +
"\"ip_id\":\"226610000054341135809\"," +
"\"ip_role_id\":\"226610000054341135809\"," +
"\"site\":\"ALIPAY\"," +
"\"site_user_id\":\"2088100110011001\"," +
"\"site_login_id\":\"abc123\"" +
"    }," +
"\"pay_amount\":100.00," +
"\"out_order_no\":\"T1000112\"," +
"\"sale_pd_code\":\"10013121310001\"," +
"\"channel\":\"TYZBL\"," +
"\"ext_data\":\"{\\\"repayType\\\":\\\"1\\\"}\"" +
"  }";
MybankCreditSupplychainTradePayResponse response=client.execute(request);
Console.WriteLine(response.Body);

$aop = new AopClient ();
$aop->gatewayUrl = 'https://openapi.alipay.com/gateway.do';
$aop->appId = 'your app_id';
$aop->rsaPrivateKey = '请填写开发者私钥去头去尾去回车，一行字符串';
$aop->alipayrsaPublicKey='请填写支付宝公钥，一行字符串';
$aop->apiVersion = '1.0';
$aop->signType = 'RSA2';
$aop->postCharset='GBK';
$aop->format='json';
$request = new MybankCreditSupplychainTradePayRequest ();
$request->setBizContent("{" .
"\"trade_type\":\"FACTORING\"," .
"\"request_id\":\"226601231123123_20170911121110_12345678\"," .
"\"buyer\":{" .
"\"use_type\":\"SITE\"," .
"\"ip_id\":\"226610000054341135809\"," .
"\"ip_role_id\":\"226610000054341135809\"," .
"\"site\":\"ALIPAY\"," .
"\"site_user_id\":\"2088100110011001\"," .
"\"site_login_id\":\"abc123\"" .
"    }," .
"\"pay_amount\":100.00," .
"\"out_order_no\":\"T1000112\"," .
"\"sale_pd_code\":\"10013121310001\"," .
"\"channel\":\"TYZBL\"," .
"\"ext_data\":\"{\\\"repayType\\\":\\\"1\\\"}\"" .
"  }");
$result = $aop->execute ( $request); 

$responseNode = str_replace(".", "_", $request->getApiMethodName()) . "_response";
$resultCode = $result->$responseNode->code;
if(!empty($resultCode)&&$resultCode == 10000){
echo "成功";
} else {
echo "失败";
}

https://openapi.alipay.com/gateway.do?timestamp=2013-01-01 08:08:08&method=mybank.credit.supplychain.trade.pay&app_id=4867&sign_type=RSA2&sign=ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE&version=1.0&biz_content=
  {
"trade_type":"FACTORING",
"request_id":"226601231123123_20170911121110_12345678",
"buyer":{
"use_type":"SITE",
"ip_id":"226610000054341135809",
"ip_role_id":"226610000054341135809",
"site":"ALIPAY",
"site_user_id":"2088100110011001",
"site_login_id":"abc123"
    },
"pay_amount":100.00,
"out_order_no":"T1000112",
"sale_pd_code":"10013121310001",
"channel":"TYZBL",
"ext_data":"{\"repayType\":\"1\"}"
  }

//为确保安全通信，需自行验证响应示例中的sign值是否为蚂蚁金服所提供。

{
	"sign":"ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE",
	"mybank_credit_supplychain_trade_pay_response":{
		"msg":"Success",
		"code":"10000",
		"ev_seq_no":"64514f261504777769740126416459"
	}
}

{
	"sign":"ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE",
	"mybank_credit_supplychain_trade_pay_response":{
		"msg":"Service Currently Unavailable",
		"code":"20000",
		"sub_msg":"系统繁忙",
		"sub_code":"isp.unknow-error"
	}
}