AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do","app_id","your private_key","json","GBK","alipay_public_key","RSA2");
AlipayEbppInvoiceMerchantlistEnterApplyRequest request = new AlipayEbppInvoiceMerchantlistEnterApplyRequest();
request.setBizContent("{" +
"\"merchant_base\":{" +
"\"m_short_name\":\"MYJF\"," +
"\"m_name\":\"蚂蚁金融服务集团\"," +
"\"logo_info\":\"/9j/4AAQSkZJRgABAQEASABIAAD/2wBDAA...\"" +
"    }," +
"      \"sub_merchant_list\":[{" +
"        \"sub_m_short_name\":\"MYJF_HZ\"," +
"\"sub_m_name\":\"杭州蚂蚁金服信息技术有限公司\"," +
"\"register_no\":\"91500000747150346A\"" +
"        }]," +
"\"sub_merchant_common_info\":{" +
"\"product_code\":\"QRCODE_MERCHANT_OPEN\"," +
"\"s_short_name\":\"SAD\"" +
"    }" +
"  }");
AlipayEbppInvoiceMerchantlistEnterApplyResponse 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);
AlipayEbppInvoiceMerchantlistEnterApplyRequest  request= new AlipayEbppInvoiceMerchantlistEnterApplyRequest() ;
request.BizContent="{" +
"\"merchant_base\":{" +
"\"m_short_name\":\"MYJF\"," +
"\"m_name\":\"蚂蚁金融服务集团\"," +
"\"logo_info\":\"/9j/4AAQSkZJRgABAQEASABIAAD/2wBDAA...\"" +
"    }," +
"      \"sub_merchant_list\":[{" +
"        \"sub_m_short_name\":\"MYJF_HZ\"," +
"\"sub_m_name\":\"杭州蚂蚁金服信息技术有限公司\"," +
"\"register_no\":\"91500000747150346A\"" +
"        }]," +
"\"sub_merchant_common_info\":{" +
"\"product_code\":\"QRCODE_MERCHANT_OPEN\"," +
"\"s_short_name\":\"SAD\"" +
"    }" +
"  }";
AlipayEbppInvoiceMerchantlistEnterApplyResponse 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 AlipayEbppInvoiceMerchantlistEnterApplyRequest ();
$request->setBizContent("{" .
"\"merchant_base\":{" .
"\"m_short_name\":\"MYJF\"," .
"\"m_name\":\"蚂蚁金融服务集团\"," .
"\"logo_info\":\"/9j/4AAQSkZJRgABAQEASABIAAD/2wBDAA...\"" .
"    }," .
"      \"sub_merchant_list\":[{" .
"        \"sub_m_short_name\":\"MYJF_HZ\"," .
"\"sub_m_name\":\"杭州蚂蚁金服信息技术有限公司\"," .
"\"register_no\":\"91500000747150346A\"" .
"        }]," .
"\"sub_merchant_common_info\":{" .
"\"product_code\":\"QRCODE_MERCHANT_OPEN\"," .
"\"s_short_name\":\"SAD\"" .
"    }" .
"  }");
$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=alipay.ebpp.invoice.merchantlist.enter.apply&app_id=5108&sign_type=RSA2&sign=ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE&version=1.0&biz_content=
  {
"merchant_base":{
"m_short_name":"MYJF",
"m_name":"蚂蚁金融服务集团",
"logo_info":"/9j/4AAQSkZJRgABAQEASABIAAD/2wBDAA..."
    },
      "sub_merchant_list":[{
        "sub_m_short_name":"MYJF_HZ",
"sub_m_name":"杭州蚂蚁金服信息技术有限公司",
"register_no":"91500000747150346A"
        }],
"sub_merchant_common_info":{
"product_code":"QRCODE_MERCHANT_OPEN",
"s_short_name":"SAD"
    }
  }

//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。

{
	"alipay_ebpp_invoice_merchantlist_enter_apply_response":{
		"msg":"Success",
		"code":"10000"
	},
	"sign":"ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE"
}

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