商家转零钱 Java实现

转载

hochie 2024-09-03 23:03:44

文章标签 商家转零钱 Java实现 c# 微信开发语言 json 文章分类 Java 后端开发

上篇文章经过开通商家转账到零钱，以及设置安全证书，APIv3密钥，接下来访问接口，获取证书的key，以及密钥。

废话不多说，上酸菜，不对，上代码。

一、首先小程序appid，商户号，证书编号，后台配置好，方便读取

//小程序ID	 
public static readonly String APPID = GetAppletAppID();
//小程序秘钥
public static readonly String APPSECRET = GetAppletSecret();
//商户号
public static readonly String MCHID = GetMchID();
//商户秘钥
public static readonly String KEY = GetKey();
//证书编号
public static readonly String SERIALNO = GetSERIALNO();

二、安全证书路径

这是也是在配置文件中配置好，或后台上传，读取路径

//=======【证书路径设置】===================================== 
/*这是也是在配置文件中配置好，或后台上传，读取路径
/* 证书路径,注意应该填写绝对路径
*/
public const string SSLCERT_PATH = @"D:\安全证书\小程序安全证书\apiclient_cert.p12";
public const string SSLCERT_PASSWORD = "商户号";

服务器物理路径，为了安全起见，不要直接获取privateKey里边的内容

三、获取相关参数，发起请求。这里边为了方便检查问题，写了日志文件Log.Info

Log.Info("开始发起商户转账到零钱：", "开===始");
Log.Info("开始发起商户转账到零钱：", "获取提现金额，amount=" + amount);
Log.Info("开始发起商户转账到零钱：", "获取客户信息，openID=" + openID);
//appid,mchId,serialNo,读取对应的配置文件，openID,amount,读取获取的值，partnerTradeNo自行生成
string partnerTradeNo = "xcx" + DateTime.Now.ToString("yyyyMMddHHmmfff");
string result = ResultV3Withdraw.WithDrawsToWx(appid, mchId, serialNo, openID, partnerTradeNo, Convert.ToInt32(amount * 100));

Log.Info("商户转账到零钱结果：", result);
JObject objs = JObject.Parse(result);

Log.Info("商户转账到零钱结果out_batch_no=", objs["out_batch_no"].ToString());
Log.Info("商户转账到零钱结果batch_id=", objs["batch_id"].ToString());
Log.Info("商户转账到零钱结果create_time=", objs["create_time"].ToString());

发起请求传递参数

public static string WithDrawsToWx(string appid,string mchid,string serialNo,string openID,string partnerTradeNo,decimal totalFee)
        {
            Log.Info("开始申请商户转账到零钱", "发起请求");
            SortedDictionary <string, object> dic = new SortedDictionary<string,object>();
            dic.Add("appid", appid);
            dic.Add("out_batch_no", partnerTradeNo);
            dic.Add("batch_name",DateTime.Now.ToString("D")+"提现记录");
            dic.Add("batch_remark", DateTime.Now.ToString("D") + "提现记录");
            dic.Add("total_amount",totalFee);
            dic.Add("total_num", 1);

            List<object> list = new List<object>();
            SortedDictionary<string, object> dic1 = new SortedDictionary<string, object>();
            dic1.Add("out_detail_no", partnerTradeNo);
            dic1.Add("transfer_amount",totalFee);
            dic1.Add("transfer_remark", "提现记录"); 
            dic1.Add("openid", openID);

            list.Add(dic1);
            dic.Add("transfer_detail_list",list);

            var url = "https://api.mch.weixin.qq.com/v3/transfer/batches";
            string transactionsResponse = WxV3PostJson(url, Newtonsoft.Json.JsonConvert.SerializeObject(dic), mchid, serialNo);
            //Log.Info("商户转账到零钱返回：" , transactionsResponse);
            return transactionsResponse; ;
        }

获取返回结果

public static string WxV3PostJson(string url, string postData, string mchId, string serialNo)
        {
            Log.Info("发起开始申请商户转账到零钱请求", "发起请求");
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "POST";
            request.ContentType = "application/json;charset=UTF-8";
            request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3100.0 Safari/537.36";
            request.Accept = "application/json";
            //Log.Info("发起开始申请商户转账到零钱请求", "发起请求1");
            string Authorization = GetAuthorization(url, "POST", postData, mchId, serialNo);
            request.Headers.Add("Authorization", Authorization);
            //Log.Info("返回申请商户转账到零钱结果", Authorization);
            byte[] paramJsonBytes;
            paramJsonBytes = System.Text.Encoding.UTF8.GetBytes(postData);
            request.ContentLength = paramJsonBytes.Length;
            Stream writer;
            try
            {
                writer = request.GetRequestStream();
            }
            catch (Exception)
            {
                writer = null;
                Console.Write("连接服务器失败!");
            }
            writer.Write(paramJsonBytes, 0, paramJsonBytes.Length);
            writer.Close();
            HttpWebResponse response;
            try
            {
                response = (HttpWebResponse)request.GetResponse();
            }
            catch (WebException ex)
            {
                response = ex.Response as HttpWebResponse;
            }
            Stream resStream = response.GetResponseStream();
            StreamReader reader = new StreamReader(resStream);
            string text = reader.ReadToEnd();
            return text;
        }

请求，获取HTTP头的授权信息

protected static string GetAuthorization(string url, string method, string jsonParame, string mchId, string serialNo)
        {
            var uri = new Uri(url);
            string urlPath = uri.PathAndQuery;
            string nonce = Guid.NewGuid().ToString();
            var timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
            //数据签名     HTTP请求方法\n接口地址的url\n请求时间戳\n请求随机串\n请求报文主体\n
            method = string.IsNullOrEmpty(method) ? "" : method;
            string message = string.Format("{0}\n{1}\n{2}\n{3}\n{4}\n", method, urlPath, timestamp, nonce, jsonParame);

            //Log.Info("请求message：", message);
            //string signTxt = Sign(message, privateKey);
            string signTxt = Sign(message);
            Log.Info("返回签名：", signTxt);

            //Authorization和格式
            string authorzationTxt = string.Format("WECHATPAY2-SHA256-RSA2048 mchid=\"{0}\",nonce_str=\"{1}\",timestamp=\"{2}\",serial_no=\"{3}\",signature=\"{4}\"",
                mchId,
                nonce,
                timestamp,
                serialNo,
                signTxt
                );
            return authorzationTxt;
           
        }

获取签名，官网给出的签名，记得加上static

protected string Sign(string message)
        {
            // NOTE： 私钥不包括私钥文件起始的-----BEGIN PRIVATE KEY-----
            //        亦不包括结尾的-----END PRIVATE KEY-----
            string privateKey = "{你的私钥}";
            byte[] keyData = Convert.FromBase64String(privateKey);
            
            var rsa = RSA.Create();
            rsa.ImportPkcs8PrivateKey(keyData, out _);
            byte[] data = System.Text.Encoding.UTF8.GetBytes(message);
            return Convert.ToBase64String(rsa.SignData(data, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1));
        }

如果有疑问，欢迎咨询，创作不易，最后一键三联哦

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