IOS: Back-end JSON data format error cannot be resolved

Scenario: MK Network request, back to the back of the data, but because some fields in the JSON data can not be resolved, that is, JSON format error, if the background does not give transcoding, you need to solve, \ r \ n is the ASCII code table in the line break, ignore these fields basically no problem

NSString *resultstring = [self responsestring];//self for Network request Operation Class (completedoperation) NSData *data = [[resultstring] stringbyreplacingoccurrencesofstring:@ "\ r \ n" withstring:@ "\\r\\n"] datausingencoding:nsutf8stringencoding]; Nserror *error = Nil;result = [nsjsonserialization jsonobjectwithdata:data options:nsjsonreadingallowfragments error:& Amp;error];

IOS: Back-end JSON data format error cannot be resolved