Wechat official account payment prompt MCH_ ID parameter format error

background ：

Use .NET Connect with wechat official account payment function .　

problem ：

Today, when making wechat payment , Always hint “ WeChat official account payment tips mch_id Parameter format error ” ！

resolvent ：

　 In fact, this problem generally does not mean that your configuration is wrong , First, it reminds you mch_id Incorrect parameter format indicates that the payment request has been submitted to wechat , Need to know mch_id It's usually 10 It is composed of digits as long as you are sure and your wechat official account mch_id If there is no mistake , Then you have to check what you read mch_id Check whether there are spaces , To avoid this problem, it's best to add one when submitting .Trim() Go to space , I just met such a problem and added one .Trim() This will make the payment successful ！

summary ：　

　 When making wechat payment, we must pay attention to some minor details （ Sometimes, a space may lead to signature errors and many other situations ）, It must be configured step by step , Don't panic, take your time , come on. ！ If you are a beginner of wechat development, I suggest seeing the documents more times