本次内容是基于独立的“企业微信”而言的;
企业微信有独立的管理后台,和一般的服务号,订阅号后台不同;
企业微信涉及员工,所以这里的支付是付款到员工零钱;
官方API文档:
https://work.weixin.qq.com/api/doc#90000/90135/90278
下面具体步骤:
1:先获取access_token
代码:
1 protected void Button1_Click(object sender, EventArgs e)
2 {
3 //企业微信ID(替换成自己的)
4 var corpid = "wx88888888";
5
6 //企业微信支付秘钥(替换成自己的)
7 var corpsecret = "88888888";
8
9 var url = string.Format("https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid={0}&corpsecret={1}", corpid, corpsecret);
10
11 var msg = HttpGet(url);
12
13 Log.DBLog(msg);
14
15 }
2:userid与openid互换
代码:
protected void Button2_Click(object sender, EventArgs e)
{
//授权后获取的access_token(替换成自己的)
var token = "88888888";
var url = string.Format("https://qyapi.weixin.qq.com/cgi-bin/user/convert_to_openid?access_token={0}", token);
var msg = HttpPost(url, "{\"userid\": \"chenhaibo\"}");
Log.DBLog(msg);
}
3:企业微信签名算法
付款api固定如下几个字段参与签名:
amount //支付的钱转成单位(分)
appid //企业微信ID
desc //付款说明
mch_id //微信支付的商户号
nonce_str //随机字符串
openid //员工openid
partner_trade_no //订单号
ww_msg_type //付款消息类型
代码:
string[] signTemp = { "amount=" + total_fee, "appid=" + APPID, "desc=" + title, "mch_id=" + PARTNER, "nonce_str=" + wx_nonceStr, "openid=" + toOpenid, "partner_trade_no=" + Bill_No, "ww_msg_type=" + "NORMAL_MSG" };
List<string> signList = signTemp.ToList();
signList.Sort();
string signOld = string.Empty;
foreach (string temp in signList)
{
signOld += temp + "&";
}
signOld = signOld.Substring(0, signOld.Length - 1);
//拼接secret
signOld += "&secret=" + Secret;
//得到workwx_sign
string get_workwx_sign = Encrypt(signOld).ToUpper();
MD5加密的方法:
/// <summary>
/// Md5加密
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
public static String Encrypt(String s)
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] bytes = System.Text.Encoding.UTF8.GetBytes(s);
bytes = md5.ComputeHash(bytes);
md5.Clear();
string ret = "";
for (int i = 0; i < bytes.Length; i++)
{
ret += Convert.ToString(bytes[i], 16).PadLeft(2, '0');
}
return ret.PadLeft(32, '0');
}
4:微信支付签名算法
签名字段:除sign字段外所有字段都参与签名(包括企业微信签名字段workwx_sign一起参与签名)。
SortedDictionary<string, string> dic1 = new SortedDictionary<string, string>();
dic1.Add("appid", APPID);
dic1.Add("mch_id", PARTNER);
//dic.Add("device_info", "013467007045711");//可为空
dic1.Add("nonce_str", wx_nonceStr);
dic1.Add("partner_trade_no", Bill_No);
dic1.Add("openid", toOpenid);
dic1.Add("check_name", "NO_CHECK");
dic1.Add("amount", total_fee);
dic1.Add("desc", title);//商品描述
dic1.Add("spbill_create_ip", "127.0.0.1"); //换成你自己的代码部署的公网IP
dic1.Add("workwx_sign", get_workwx_sign);
dic1.Add("ww_msg_type", "NORMAL_MSG");
dic1.Add("act_name", title);
//得到支付签名
string get_sign = BuildRequest(dic1, PARTNER_KEY);//PARTNER_KEY是微信支付商户号里面的API密钥
BuildRequest方法包含:
1:参数过滤
2:参数名ASCII码从小到大排序(字典序)
3:拼接成字符串
4:拼接支付密钥
5:MD5加密
public static string BuildRequest(SortedDictionary<string, string> sParaTemp, string key)
{
//获取过滤后的数组
Dictionary<string, string> dicPara = new Dictionary<string, string>();
dicPara = FilterPara(sParaTemp);
//组合参数数组
string prestr = CreateLinkString(dicPara);
//拼接支付密钥
string stringSignTemp = prestr + "&key=" + key;
//Vincent._Log.SaveMessage("生成签名的参数:" + stringSignTemp);
Log.DBLog("生成签名的参数:" + stringSignTemp);
//获得加密结果
string myMd5Str = GetMD5(stringSignTemp.Trim());
//返回转换为大写的加密串
return myMd5Str.ToUpper();
}
/// <summary>
/// 除去数组中的空值和签名参数并以字母a到z的顺序排序
/// </summary>
/// <param name="dicArrayPre">过滤前的参数组</param>
/// <returns>过滤后的参数组</returns>
public static Dictionary<string, string> FilterPara(SortedDictionary<string, string> dicArrayPre)
{
Dictionary<string, string> dicArray = new Dictionary<string, string>();
foreach (KeyValuePair<string, string> temp in dicArrayPre)
{
if (temp.Key != "sign" && !string.IsNullOrEmpty(temp.Value))
{
dicArray.Add(temp.Key, temp.Value);
}
}
return dicArray;
}
//组合参数数组
public static string CreateLinkString(Dictionary<string, string> dicArray)
{
StringBuilder prestr = new StringBuilder();
foreach (KeyValuePair<string, string> temp in dicArray)
{
prestr.Append(temp.Key + "=" + temp.Value + "&");
}
int nLen = prestr.Length;
prestr.Remove(nLen - 1, 1);
return prestr.ToString();
}
//加密
public static string GetMD5(string pwd)
{
MD5 md5Hasher = MD5.Create();
byte[] data = md5Hasher.ComputeHash(Encoding.UTF8.GetBytes(pwd));
StringBuilder sBuilder = new StringBuilder();
for (int i = 0; i < data.Length; i++)
{
sBuilder.Append(data[i].ToString("x2"));
}
return sBuilder.ToString();
}
5:向员工付款
string _req_data = "<xml>";
_req_data += "<appid>" + APPID + "</appid>";
_req_data += "<mch_id>" + PARTNER + "</mch_id>";
_req_data += "<nonce_str>" + wx_nonceStr + "</nonce_str>";
_req_data += "<sign>" + get_sign + "</sign>";
_req_data += "<partner_trade_no>" + Bill_No + "</partner_trade_no>";
_req_data += "<openid>" + toOpenid + "</openid>";
_req_data += "<check_name>NO_CHECK</check_name>";
_req_data += "<amount>" + total_fee + "</amount>";
_req_data += "<desc>" + title + "</desc>";
_req_data += "<spbill_create_ip>101.132.79.228</spbill_create_ip>";
_req_data += "<workwx_sign>" + get_workwx_sign + "</workwx_sign>";
_req_data += "<ww_msg_type>" + "NORMAL_MSG" + "</ww_msg_type>";
_req_data += "<act_name>" + title + "</act_name>";
_req_data += "</xml>";
var result = PostPage(url, _req_data.Trim());
PostPage方法:涉及需要认证微信支付商户号中的证书。
首先:证书需要放到服务器上
/// <summary>
/// post微信请求
/// </summary>
/// <param name="posturl"></param>
/// <param name="postData"></param>
/// <returns></returns>
public static string PostPage(string posturl, string postData)
{
Stream outstream = null;
Stream instream = null;
StreamReader sr = null;
HttpWebResponse response = null;
HttpWebRequest request = null;
Encoding encoding = Encoding.UTF8;
byte[] data = encoding.GetBytes(postData);
// 准备请求...
try
{
//CerPath证书路径
string certPath = string.Format(@"D:\test\ssl\cert\apiclient_cert.p12");
//证书密码(初始为商户号)
string password = "88888888";
X509Certificate2 cert = new System.Security.Cryptography.X509Certificates.X509Certificate2(certPath, password, X509KeyStorageFlags.MachineKeySet);
// 设置参数
request = WebRequest.Create(posturl) as HttpWebRequest;
CookieContainer cookieContainer = new CookieContainer();
request.CookieContainer = cookieContainer;
request.AllowAutoRedirect = true;
request.Method = "POST";
request.ContentType = "text/xml";
request.ContentLength = data.Length;
request.ClientCertificates.Add(cert);
outstream = request.GetRequestStream();
outstream.Write(data, 0, data.Length);
outstream.Close();
//发送请求并获取相应回应数据
response = request.GetResponse() as HttpWebResponse;
//直到request.GetResponse()程序才开始向目标网页发送Post请求
instream = response.GetResponseStream();
sr = new StreamReader(instream, encoding);
//返回结果网页(html)代码
string content = sr.ReadToEnd();
string err = string.Empty;
return content;
}
catch (Exception ex)
{
return ex.Message;
}
}
最后,因为微信支付开发调试不方便,所以提供txt方式的Log方法
public class Log
{
public static void DBLog(string strMemo)
{
LogBase("Error.txt", "\r\n" + DateTime.Now.ToString() + " " + strMemo);
}
public static void DBLog(string sql, string strMemo)
{
LogBase("Error.txt", "\r\n" + DateTime.Now.ToString() + " " + strMemo + "\r\nSQL:" + sql);
}
public static void WriteLog(string strMemo)
{
LogBase("Log.txt", strMemo);
}
public static void LogBase(string fileName, string str)
{
string filename = "D:/blwxtest/" + fileName;
if (!Directory.Exists("D:/blwxtest/"))
Directory.CreateDirectory("D:/blwxtest/");
StreamWriter sr = null;
try
{
if (!File.Exists(filename))
{
sr = File.CreateText(filename);
}
else
{
sr = File.AppendText(filename);
}
sr.WriteLine(str);
}
catch
{
}
finally
{
if (sr != null)
sr.Close();
}
}
}