error status code 400

Some of the common status codes are:200-Server successfully returned to Web page404-The requested page does not exist503-Service Not availableDetailed decomposition:1XX (Temporary response)A status code that represents a temporary response and

The error NSLocalizedDescription = Expected status code in (200-299), got 400 is reported in the iOS post request. When AFNetworking postJSON data is used, I am prompted at the beginning: // Error Domain = NSURLErrorDomain Code =-1007 "too rewrite

Error logging in the server is similar to this: 124.65.133.242––[27/oct/2014:14:30:51 +0800] "-" 400 0 "-" "-"124.65.133.242––[27/oct/2014:14:31:45 +0800] "-" 400 0 "-" "-"124.65.133.242––[27/oct/2014:14:31:45 +0800] "-" 400 0 "-" "-"124.65.133.242–

201-206 indicates that the server successfully processed the status code of the request, which indicates that the Web page can be accessed normally.200 (success) The server has successfully processed the request. Typically, this indicates that the

201-206 indicates that the server successfully processed the status code of the request, which indicates that the Web page can be accessed normally.200 (success) The server has successfully processed the request. Typically, this indicates that the

201-206 indicates that the server successfully processed the status code of the request, which indicates that the Web page can be accessed normally.200 (success) The server has successfully processed the request. Typically, this indicates that the

201-206 indicates that the server successfully processed the status code of the request, which indicates that the Web page can be accessed normally.200 (success) The server has successfully processed the request. Typically, this indicates that the

201-206 indicates that the server successfully processed the requested status code, indicating that the Web page can be accessed normally. 200 (successful) the server has successfully processed the request.         Typically, this indicates that the

201-206 indicates that the server successfully processed the requested status code, indicating that the Web page can be accessed normally. 200 (successful) the server has successfully processed the request. Typically, this indicates that the server

In the actual application of the site construction, prone to a lot of small mistakes, like MySQL was optimized not in place, the impact of the overall site browsing effect, in fact, the site's regular HTTP status code performance is the same, Google