AFNetWorking出現的崩潰報錯：

[Bugly]  Trapped uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: URLString' 

原因：是AFNetWorking內部有一個這個方法：

NSMutableURLRequest *request = [self.requestSerializer requestWithMethod:method URLString:[[NSURL URLWithString:URLString relativeToURL:self.baseURL] absoluteString] parameters:parameters error:&serializationError];

如果URLString含有非法字符時，比如前后有空格。這個方法[NSURL URLWithString:URLString relativeToURL:self.baseURL]會返回nil，從而在方法內部的NSParameterAssert(URLString);處拋出異常，導致崩潰：

(lldb) po [[NSURL URLWithString:URLString relativeToURL:self.baseURL] absoluteString]
 nil
(lldb) po [NSURL URLWithString:URLString relativeToURL:self.baseURL]
 nil
(lldb) po [NSURL URLWithString:URLString]
 nil
(lldb) po URLString
 http://10.161.0.169:8092/Spring/PayV647/do 

解決方案：傳入URLString之前，先將其編碼：

URLString = [URLString stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];