curl 'https://openapi.alipay.com/gateway.do?charset=UTF-8&method=alipay.trade.cancel&format=json&sign=${sign}&app_id=${appid}&version=1.0&sign_type=RSA2&timestamp=${now}' \
 -F 'app_auth_token=${app_auth_token}' \
 -F 'biz_content={
	"out_trade_no":"20150320010101001",
	"trade_no":"2014112611001004680073956707"
}'

using System;
using System.Collections.Generic;
using Aop.Api;
using Aop.Api.Request;
using Aop.Api.Response;
using Aop.Api.Domain;
using Aop.Api.Util;
namespace SdkDemoTest
{
    public class AlipayTradeCancel
    {
        public static void Main(string[] args) 
        {
            // 初始化SDK
            IAopClient alipayClient = new DefaultAopClient(GetAlipayConfig());
            // 构造请求参数以调用接口
            AlipayTradeCancelRequest request = new AlipayTradeCancelRequest();
            AlipayTradeCancelModel model = new AlipayTradeCancelModel();
            
            // 设置原支付请求的商户订单号
            model.OutTradeNo = "20150320010101001";
            
            // 设置支付宝交易号
            model.TradeNo = "2014112611001004680073956707";
            
            request.SetBizModel(model);
            // 第三方代调用模式下请设置app_auth_token
            // request.PutOtherTextParam("app_auth_token", "<-- 请填写应用授权令牌 -->");

            AlipayTradeCancelResponse response = alipayClient.Execute(request);

            if(!response.IsError)
            {
                Console.WriteLine("调用成功");
            }
            else
            {
                Console.WriteLine("调用失败");
            }
        }

        private static AlipayConfig GetAlipayConfig()
        {
            string privateKey  = "<-- 请填写您的应用私钥，例如：MIIEvQIBADANB ... ... -->";
            string alipayPublicKey = "<-- 请填写您的支付宝公钥，例如：MIIBIjANBg... -->";
            AlipayConfig alipayConfig = new AlipayConfig();
            alipayConfig.ServerUrl = "https://openapi.alipay.com/gateway.do";
            alipayConfig.AppId = "<-- 请填写您的AppId，例如：2019091767145019 -->";
            alipayConfig.PrivateKey = privateKey;
            alipayConfig.Format = "json";
            alipayConfig.AlipayPublicKey = alipayPublicKey;
            alipayConfig.Charset = "UTF-8";
            alipayConfig.SignType = "RSA2";
            return alipayConfig;
        }
    }
}

<?php
require_once '../aop/AopClient.php';
require_once '../aop/AopCertClient.php';
require_once '../aop/AopCertification.php';
require_once '../aop/AlipayConfig.php';
require_once '../aop/request/AlipayTradeCancelRequest.php';

// 初始化SDK
$alipayClient = new AopClient(getAlipayConfig());
// 构造请求参数以调用接口
$request = new AlipayTradeCancelRequest();
$model = array();

// 设置原支付请求的商户订单号
$model['out_trade_no'] = "20150320010101001";

// 设置支付宝交易号
$model['trade_no'] = "2014112611001004680073956707";

$request->setBizContent(json_encode($model,JSON_UNESCAPED_UNICODE));
// 如果是第三方代调用模式，请设置app_auth_token（应用授权令牌）
$responseResult = $alipayClient->execute($request, null, "<-- 请填写应用授权令牌 -->", null);
$responseApiName = str_replace(".","_",$request->getApiMethodName())."_response";
$response = $responseResult->$responseApiName;
if(!empty($response->code)&&$response->code==10000){
    echo("调用成功");
}
else{
    echo("调用失败");
}

function getAlipayConfig()
{
    $privateKey  = '<-- 请填写您的应用私钥，例如：MIIEvQIBADANB ... ... -->';
    $alipayPublicKey = '<-- 请填写您的支付宝公钥，例如：MIIBIjANBg... -->';
    $alipayConfig = new AlipayConfig();
    $alipayConfig->setServerUrl('https://openapi.alipay.com/gateway.do');
    $alipayConfig->setAppId('<-- 请填写您的AppId，例如：2019091767145019 -->');
    $alipayConfig->setPrivateKey($privateKey);
    $alipayConfig->setFormat('json');
    $alipayConfig->setAlipayPublicKey($alipayPublicKey);
    $alipayConfig->setCharset('UTF-8');
    $alipayConfig->setSignType('RSA2');
    return $alipayConfig;
}