Objective-c - When making a post request, the server can detect that two non-empty fields are received, but an error is returned

Question

When making a post request, the server can detect that it received two non-null fields, but returned an error classification: JAVA HTTP Status 500 - Request processing failed; nested exception is java.lang.NullPointerException type Exception report message Request processing failed; nested exception is java.lang.NullPointerException description The server encountered an internal error that prevented it from fulfilling this request. exception o

Answer 1

Null pointer, it means there is something wrong with your server-side writing. Test the server carefully and you should see an error when accepting empty fields.