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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：
我要评论 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();
}
}
}
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