AFNetworking Couldn't Send JSONData through POST Request? - ios

Question

This is the code I wrote for posting JSON to server.
AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];
mgr.requestSerializer = [AFJSONRequestSerializer serializer];
NSLog(#"Dictionary %#",formData);
[mgr POST:[self getFullURL:WSFormSubmit] parameters:formData success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"JSON: %#", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
formData Prints as:
{
FieldValueDTOs = (
{
AdditionalInfo = "";
CreateTime = "2015-09-09 10:14";
FieldValue = "";
ReportFieldValueID = 0;
ReportID = 0;
ReportTemplateFieldID = 21642;
},
{
AdditionalInfo = "";
CreateTime = "2015-09-09 10:14";
FieldValue = asdfasdf;
ReportFieldValueID = 0;
ReportID = 0;
ReportTemplateFieldID = 21643;
}
);
LocationID = 27;
ReportID = 0;
ReportLabel = "";
ReportTemplateID = 930;
ReportTime = "2015-09-09 10:14";
}
This seems to be perfect Dictionary to send it as a parameter to manager's POST:parameters:success method.
But it's returning this error when I do this. I couldn't figure out what's causing the error.
Error log in debugger:
Error: Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (JSON text did not start with array or object and option to allow fragments not set.) UserInfo=0x79069f90 {NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set., NSUnderlyingError=0x790517c0 "Request failed: bad request (400)"}

Answer 1

formData must be NSDictionary object
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
manager.requestSerializer = [AFJSONRequestSerializer serializer];
[manager.requestSerializer setTimeoutInterval:60];
[manager POST:[self getFullURL:WSFormSubmit]
parameters:formData
success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSString* newStr = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
NSLog(#"Response: %#",newStr);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];

Answer 2

Hope this works, you can set values for json in header field
AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];
AFJSONRequestSerializer *requestSerializer = [AFJSONRequestSerializer serializer];
[requestSerializer setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[requestSerializer setValue:#"application/json" forHTTPHeaderField:#"Accept"];
mgr.requestSerializer = requestSerializer;
[mgr POST:[self getFullURL:WSFormSubmit] parameters:formData success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"JSON: %#", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];

Answer 3

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.requestSerializer = [AFJSONRequestSerializer serializer];
manager.responseSerializer = [AFJSONResponseSerializer serializer];
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:#"application/json"];
[manager POST:"<Your Host URL>" parameters:<Params as Dictionary> success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSError *error = nil;
// *** Perform success action ***
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
// *** perform failure action ***
}];
you forgot to set contentType for your request which is JSON and make sure your API accepts JSON and POST data as input otherwise it will not work.