起因（大叔原创）
对于微信支付来说，你的发起者需要配置对应的域名来获取code(获取用户信息接口），而这意味着，你的多个项目（域名不同）不能同时使用一个公众号，这是一件很操蛋的事，对于我们开发人员来说，当然不能接受，我们需要一种代理模式，代我们实现多个项目使用一个公众号（一个支付的域名），这是必须的，说做就做。（支付发起者可以多个域名，最多三个，就是我们说的权限目录那块）
原理
开始－》
第三方网站重定向在代理服务器－》
代理服务器跳到微信服务器拿code－》
返回 code到代理服务器－》
代理服务器再发跳到微信服务器拿 openid和token－》
返回openid和token到代理服务器－》
当openid不为空时跳回第三方网站服务器－》
由第三方服务的支付完成最后的付款过程－》
结果
思维图像
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" alt="" />
实现
#region 代理模式
/// <summary>
/// 微信支付
/// 从代理服务器获取openID
/// 注意：代理服务器与本服务器需要有预定，双方要告诉对应的URL地址，用来进行二次跳转
/// </summary>
/// <returns></returns>
public ActionResult Weixin()
{
string openId = Request.QueryString["openId"];
if (string.IsNullOrWhiteSpace(openId))
{
//第一次加载页面，跳转到代理服务器获openid
Logger.LoggerFactory.Instance.Logger_Info("openid为空");
Response.Redirect("http://m.xxx.cn/order/GetOpenId"); }
else
{
//由代理服务器跳回来后，得到本用户的openId
Logger.LoggerFactory.Instance.Logger_Info("从m158拿到openid:" + openId);
ViewBag.openId = openId;
}
return View();
} /// <summary>
/// 微信支付的代理服务
/// </summary>
/// <returns></returns>
public void WeixinProxy()
{
string openId = JsApiImplement.GetOpenId();//获取当前openId
string bussinessUrl = "";//业务网站支付地址
if (!string.IsNullOrWhiteSpace(openId))
Redirect(bussinessUrl + "?openId=" + openId);
}
/// <summary>
/// 获取支付JSON串
/// </summary>
/// <param name="orderId"></param>
/// <param name="money"></param>
/// <param name="openId"></param>
/// <returns></returns>
public string GetPayJson(string orderId, int money, string openId)
{
try
{
Logger.LoggerFactory.Instance.Logger_Info("发送订单号=" + orderId + ",openID=" + openId);
//JsApiImplement.GetOpenId();加到主页面上
return JsApiImplement.Send(money, orderId, openId); }
catch (Exception ex)
{ Logger.LoggerFactory.Instance.Logger_Error(ex);
return "出错了";
} }
#endregion
在测试过程中出现过一些问题，然后通过日志分析解决了，感觉在oauth权限过程中，页面重定向成为了唯一的方式，以后这种方式我们应该在自己的项目中多多使用！
感谢这个坑很多的微信！
没有你的坑，我们也不会学到这么多知识！