So i am trying to send data to a webservice via url with a parameter. the code i have is below but it never hits the server. the request and responses are null. What am i doing wrong?
-(void) postData:(NSString *)data{
NSURLResponse* response;
NSError* error = nil;
NSString *urlString = [NSString stringWithFormat:#"http://someaddress.com/api?data=%#", data];
NSURL *lookupURL = [NSURL URLWithString:urlString];
//Create the request.
NSURLRequest *theRequest=[NSURLRequest requestWithURL:lookupURL];
NSData *request = [NSURLConnection sendSynchronousRequest:theRequest returningResponse:&response error:&error];
NSString *dataString = [[NSString alloc] initWithData:request encoding:NSUTF8StringEncoding];
NSLog(#"-----------------------------");
NSLog(#"Request: %#", theRequest);
NSLog(#"req response: %#", request);
NSLog(#"response: %#", dataString);}
you want to POST some binary data but you do a GET request and try to put the binary into the url. (without encoding it)
sample post:
NSURL *url = [NSURL URLWithString:#"http://server.com"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPMethod = #"POST";
request.HTTPBody = postData;
NSData *respData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
also, note that the synchronous get is bad as it blocks :) use async networking!
Related
i am consuming the json webservice .i am assigning the stringurl to nsurl but the nsurl always assigning the null value. also i didn't get the response. can anyone suggest me what is the mistake i done in the following coding
- (IBAction)addbutton:(id)sender {
NSString *urltest = #"sample url";
NSURL *url = [NSURL URLWithString:urltest];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response,
NSData *data, NSError *connectionError)
{
if (data.length > 0 && connectionError == nil)
{
NSDictionary *greeting = [NSJSONSerialization JSONObjectWithData:data
options:0
error:NULL];
NSString *test= [[greeting objectForKey:#"code"] stringValue];
NSString *test1 = [greeting objectForKey:#"message"];
}
}];}
Your URL string is invalid, note the part:
taxName=ÂU.F¿Kåa¥gh
Those characters are not allowed in URL. Fix your URL to a valid URL (e.g. percent-encode parameter values).
E.g. the above with URL encoding would be:
taxName=%C3%82U.F%C2%BFK%C3%A5a%C2%A5gh
but I am not sure that's correct. The parameter value does not seem to be valid.
Please use this:
NSString *urlString = #"http://localhost:8080/MyWebservice.asmx/GetHelloWorldWithParam";
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod: #"POST"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
NSString *myRequestString = #"param="; // Attention HERE!!!!
[myRequestString stringByAppendingString:myParamString];
NSData *requestData = [NSData dataWithBytes:[myRequestString UTF8String] length:[myRequestString length]];
[request setHTTPBody: requestData];
Thank you
I need to Parse below string to POST method in iOS
"jsonData":{"empId":"cxvd","password":"sfsd"}
But I m getting the error as
Res: Tomcat Error
HTTP Status 400 - Required String parameter 'jsonData' is not present
//------ Method I have used to Parse is ---------- //
+(void) requestToServerForLogin:(NSString*)userName andPassward: (NSString*)password onCompletion:(RequestCompletionHandler) handler
{
NSString *url = [Ip stringByAppendingString:#"login"];
NSString *jsonString = [NSString stringWithFormat:#"\"jsonData\":{\"empId\":\"%#\",\"password\":\"%#\"}",
userName,
password ];
NSURL *nsurl = [NSURL URLWithString:url];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:nsurl];
[urlRequest setTimeoutInterval:60.0f];
[urlRequest setHTTPMethod:#"POST"];
[urlRequest setValue:#"application/json"
forHTTPHeaderField:#"Content-type"];
NSString *body = jsonString1;
[urlRequest setHTTPBody:[body dataUsingEncoding:NSUTF8StringEncoding]];
NSLog(#"urlRequest :%#",[body dataUsingEncoding:NSUTF8StringEncoding]);
NSOperationQueue *queue = [[NSOperationQueue alloc] init];
[NSURLConnection sendAsynchronousRequest:urlRequest
queue:queue
completionHandler:^(NSURLResponse *response,
NSData *data1, NSError *error)
{
NSString *res = [[NSString alloc] initWithData:data1 encoding:NSUTF8StringEncoding];
if(handler) handler(res,error);
}];
}
Thanks in advance
There is way to much code. The substringToIndex and substringFromIndex are wrong, should not be in the code.
Use the literal syntax for the dictionaries:
NSDictionary *jsonDict = #{#"jsonData":#{#"password":password, #"empId":userName}};
NSData* jsonData = [NSJSONSerialization dataWithJSONObject:jsonDict options:0 error:&error];
Im' trying to submit to Reddit via my iOS app. I can login fine and am sent back a modhash and a cookie which I save via NSUserDefaults.
The issue is when I post the data I keep getting "USER_REQUIRED" as the response, even though I have included the modhash in the post and set my session cookie. I have even included the following in my app delegate:
[[NSHTTPCookieStorage sharedHTTPCookieStorage]
setCookieAcceptPolicy:NSHTTPCookieAcceptPolicyAlways];
But it still doesn't work. Here is my code:
-(void) post {
NSString *modhash2 = [[NSUserDefaults standardUserDefaults]
objectForKey:#"modhash"];
NSString *urlString = [NSString
stringWithFormat:#"https://ssl.reddit.com/api/submit"];
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
NSString *contentType = [NSString stringWithFormat:#"application/x-www-form-urlencoded;"];
[request addValue:contentType forHTTPHeaderField: #"Content-Type"];
[request addValue:redditCookie forHTTPHeaderField:#"Cookie"];
[request setHTTPMethod:#"POST"];
NSString *httpBody = [NSString stringWithFormat
:#" ?uh=%#&kind=link&url=%#&sr=%#&title=%#&r=%#&api_type=json",
modhash2,
#"www.google.com",
#"test",
#"Google.com",
#"test"];
[request setHTTPBody:[httpBody dataUsingEncoding:NSASCIIStringEncoding]];
NSURLResponse* response;
NSError* error = nil;
NSData* result = [NSURLConnection
sendSynchronousRequest:request
returningResponse:&response
error:&error];
NSDictionary *json = [NSJSONSerialization
JSONObjectWithData:result
options:NSJSONReadingMutableContainers
error:nil];
NSDictionary *responseJSON = [json valueForKey:#"json"];
NSLog(#"RETURN: %#",responseJSON);
}
Any ideas?
I'm trying to read a text file using a synchronous request. It doesn't work but I get no errors or warnings either.
Can anyone enlighten me on what I'm doing wrong, please?
NSString *url = #"http://pappons.com/test.txt" ;
NSLog(#"getHTTPData: %#" , url ) ;
NSURLResponse* response = nil;
NSURLRequest* urlRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
NSData* data = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:nil] ;
NSString *myString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog( #"data: %#" , myString ) ;
output:
2012-06-15 11:33:42.209 FrederikTest[1365:707] getHTTPData: http://pappons.com/test.txt
2012-06-15 11:33:42.306 FrederikTest[1365:707] data:
pass in NSError to check if error occurred
NSError *error = nil;
NSData *data = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:&error];
I'm working on a method to centralize my URL connections for sending and receiving JSON data from a server. It works with POST, but not GET. I'm using a Google App Engine server and on my computer it'll handle the POST requests and return proper results (and log appropriately), but I get the following error when I try the request with a GET method:
Error Domain=kCFErrorDomainCFNetwork Code=303 "The operation couldn’t be completed. (kCFErrorDomainCFNetwork error 303.)" UserInfo=0xd57e400 {NSErrorFailingURLKey=http://localhost:8080/api/login, NSErrorFailingURLStringKey=http://localhost:8080/api/login}
In addition, the GAE dev server shows a "broken pipe" error, indicating that the client closed the connection before the server was finished sending all data.
Here's the method:
/* Connects to a given URL and sends JSON data via HTTP request and returns the result of the request as a dict */
- (id) sendRequestToModule:(NSString*) module ofType:(NSString*) type function:(NSString*) func params:(NSDictionary*) params {
NSString *str_params = [NSDictionary dictionaryWithObjectsAndKeys:func, #"function", params, #"params", nil];
NSString *str_url = [NSString stringWithFormat:#"%#%#", lds_url, module];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:str_url]];
NSData *data = [[NSString stringWithFormat:#"action=%#", [str_params JSONString]] dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPMethod:type];
[request setHTTPBody:data];
[request setValue:[NSString stringWithFormat:#"%d", [data length]] forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
NSError *error = nil;
NSURLResponse *response = nil;
NSData *result = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSLog(#"Error: %#", error);
NSLog(#"Result: %#", [[NSString alloc] initWithData:result encoding:NSUTF8StringEncoding]);
return [result objectFromJSONData];
}
A sample call would be:
NSDictionary *response = [fetcher sendRequestToModule:#"login" ofType:#"GET" function:#"validate_email" params:dict];
Again, this works with a POST but not a GET. How can I fix this?
In my case i was not calling [request setHTTPMethod: #"POST" ]
I think the root cause is you have an invalid URL.
JSON encoding will include things like '{', '}', '[' and ']'. All of these need to be URL encoded before being added to a URL.
NSString *query = [NSString stringWithFormat:#"?action=%#", [str_params JSONString]];
query = [query stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *URL = [NSURL URLWithString:[NSString stringWithFormat:#"%#%#", str_url, query]];
To directly answer your question:
According to CFNetwork Error Codes Reference the error is kCFErrorHTTPParseFailure. This means the client failed to correctly parse the HTTP response.
The reason why is that a GET doesn't include a body. Why would you want to submit JSON in a GET anyways?
If the target api returns data only you pass it in the url params.
If you want to send data and "get" a response use a post and examine the body on return.
Sample Post:
NSError *error;
NSString *urlString = [[NSString alloc] initWithFormat:#"http://%#:%#/XXXX/MVC Controller Method/%#",self.ServerName, self.Port, sessionId ];
NSURL *url = [NSURL URLWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding ]];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"POST"];
// hydrate the remote object
NSString *returnString = [rdc JSONRepresentation];
NSData *s10 = [returnString dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPBody:s10];
NSURLResponse *theResponse = [[NSURLResponse alloc] init];
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&theResponse error:&error];
NSString *message = [[NSString alloc] initWithFormat: #"nothing"];
if (error) {
message = [[NSString alloc] initWithFormat:#"Error: %#", error];
} else {
message = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
}
NSLog(#"%#", message);
return message;