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];
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 am trying to post and JSON data to server.
My JSON is:
{
“username”:”sample”,
“password” : “password-1”
}
The way I am sending it to server is:
NSError *error;
NSString *data = [NSString stringWithFormat:#"{\"username\":\"%#\",\"password\":\"%#\"}",_textFieldUserName.text,_textFieldPasssword.text];
NSData *postData = [data dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSData *jsonData = [NSJSONSerialization JSONObjectWithData:postData options:0 error:&error];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:#"My URL"]];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:jsonData];
NSURLResponse *requestResponse;
NSData *requestHandler = [NSURLConnection sendSynchronousRequest:request returningResponse:&requestResponse error:nil];
NSDictionary *responseDictionary = [NSJSONSerialization JSONObjectWithData:requestHandler options:0 error:&error];
NSLog(#"resposne dicionary is %#",responseDictionary);
NSString *requestReply = [[NSString alloc] initWithBytes:[requestHandler bytes] length:[requestHandler length] encoding:NSASCIIStringEncoding];
NSLog(#"requestReply: %#", requestReply);
The JsonData that is created is a valid JSON accepted by the server.
But the app is crashing and the error is:
-[__NSCFDictionary length]: unrecognized selector sent to instance 0x1702654c0
what is wrong that i am doing here?
I always use this method in my apps to perform API calls. This is the post method. It is asynchronous so you can specify a callback to be called when the server answer.
-(void)placePostRequestWithURL:(NSString *)action withData:(NSDictionary *)dataToSend withHandler:(void (^)(NSURLResponse *response, NSData *data, NSError *error))ourBlock {
NSString *urlString = [NSString stringWithFormat:#"%#", action];
NSLog(#"%#", urlString);
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dataToSend options:0 error:&error];
NSString *jsonString;
if (! jsonData) {
NSLog(#"Got an error: %#", error);
} else {
jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
NSData *requestData = [NSData dataWithBytes:[jsonString UTF8String] length:[jsonString lengthOfBytesUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/json; charset=UTF-8" forHTTPHeaderField:#"Content-Type"];
[request setValue:[NSString stringWithFormat:#"%lu", (unsigned long)[requestData length]] forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody: requestData];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:ourBlock];
}
}
You can easily call it:
- (void) login:(NSDictionary *)data
calledBy:(id)calledBy
withSuccess:(SEL)successCallback
andFailure:(SEL)failureCallback{
[self placePostRequestWithURL:#"yourActionUrl"
withData:data
withHandler:^(NSURLResponse *response, NSData *rawData, NSError *error) {
NSString *string = [[NSString alloc] initWithData:rawData
encoding:NSUTF8StringEncoding];
NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)response;
NSInteger code = [httpResponse statusCode];
NSLog(#"%ld", (long)code);
if (!(code >= 200 && code < 300)) {
NSLog(#"ERROR (%ld): %#", (long)code, string);
[calledBy performSelector:failureCallback withObject:string];
} else {
NSLog(#"OK");
NSDictionary *result = [NSDictionary dictionaryWithObjectsAndKeys:
string, #"id",
nil];
[calledBy performSelector:successCallback withObject:result];
}
}];
}
And finally, you invocation:
NSDictionary *dataToSend = [NSDictionary dictionaryWithObjectsAndKeys:
_textFieldUserName.text, #"username",
_textFieldPasssword.text, #"password", nil];
[self login:dataToSend
calledBy:self
withSuccess:#selector(loginDidEnd:)
andFailure:#selector(loginFailure:)];
Don't forget to define your callbacks:
- (void)loginDidEnd:(id)result{
NSLog(#"loginDidEnd:");
// Do your actions
}
- (void)loginFailure:(id)result{
NSLog(#"loginFailure:");
// Do your actions
}
First you create an NSString* that is supposed to contain JSON data. This doesn't work in general if the username and password contain any unusual characters. For example, I make sure that I have a quotation mark in my password to make sure that stupid software crashes.
You turn that string into an NSData* using ASCII encoding. So if my username contains any characters that are not in the ASCII character set, what you get is nonsense.
You then use the parser to turn this into a dictionary or array, but store the result into an NSData. Chances are that the parse fails and you get nil, otherwise you get an NSDictionary* or an NSArray*, but most definitely not an NSData*.
Here's how you do it properly: You create a dictionary, and then turn it into NSData.
NSDictionary* dict = #{ #"username": _textFieldUserName.text,
#"password": _textFieldPasssword.text };
NSError* error;
NSData* data = [NSJSONSerialization dataWithJSONObject:dict options:0 error:&error];
That's it.
try this:
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:#"My URL"];
if (!request) NSLog(#"Error creating the URL Request");
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[data dataUsingEncoding:NSUTF8StringEncoding]];
[request setValue:#"text/json" forHTTPHeaderField:#"Content-Type"];
NSLog(#"will create connection");
// Send a synchronous request
NSURLResponse * response = nil;
NSError * NSURLRequestError = nil;
NSData * responseData = [NSURLConnection sendSynchronousRequest:request
returningResponse:&response
error:&NSURLRequestError];
I have this code who send a file to my server:
NSData *data = [NSData dataWithContentsOfFile:path];
NSMutableString *urlString = [[NSMutableString alloc] initWithFormat:#"name=thefile&&filename=recording"];
[urlString appendFormat:#"%#", data];
NSData *postData = [urlString dataUsingEncoding:NSASCIIStringEncoding
allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d", [postData length]];
NSString *baseurl = #"http://websitetester.com/here.php";
NSURL *url = [NSURL URLWithString:baseurl];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url];
[urlRequest setHTTPMethod: #"POST"];
[urlRequest setValue:postLength forHTTPHeaderField:#"Content-Length"];
[urlRequest setValue:#"application/x-www-form-urlencoded"
forHTTPHeaderField:#"Content-Type"];
[urlRequest setHTTPBody:postData];
NSURLConnection *connection = [NSURLConnection connectionWithRequest:urlRequest delegate:self];
[connection start];
NSLog(#"File Send to server!");
this code works perfectly but I would like to receive a return from the server, the php file at the end of the code I show:
<?php
if(...){
...
echo "Data Received";
}else{
...
echo "Error in server";
}
?>
All I'm trying is receive this echo in php and show an alert inside my app, how code I can implement inside my code to do that?
EDIT
Hey I find a code who receive the return data in objetive-c, the code is:
NSURLResponse* response;
NSError* error;
NSData* result = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:&error];
NSString *returnString = [[NSString alloc] initWithData:result encoding:NSUTF8StringEncoding];
NSLog(#"return: %#",returnString);
and now the code works the way I expected.
I want to parse REST API with JSON is there any Best Example or Tutorial so help me...... Like I want to post request like Login and Register and then parse Feed using REST API..... I am using below code to post request
NSString *email = #"*******";
NSString *password = #"******";
NSString *apikey = #"********";
NSString *loginURL = #"***************";
NSURL *url = [NSURL URLWithString:loginURL];
NSString *JSONString = [NSString stringWithFormat:#"{\"apikey\":\"%#\",\"email\":\"%#\",\"password\":\"%#\"}", apikey, email, password];
NSData *JSONBody = [JSONString dataUsingEncoding:NSUTF8StringEncoding];
NSMutableURLRequest *loginRequest = [[NSMutableURLRequest alloc] initWithURL:url];
loginRequest.HTTPMethod = #"POST";
loginRequest.HTTPBody = JSONBody;
NSOperationQueue *queue = [NSOperationQueue new];
[NSURLConnection sendAsynchronousRequest:loginRequest
queue:queue
completionHandler:^(NSURLResponse *response, NSData *data, NSError *error){
NSLog(#"resp:%#",response);
// Manage the response here.
}];
To parse the JSON response, you will need to implement
id obj = [NSJSONSerialization JSONObjectWithData:data];
in your completionHandler.
To get NSDictionary object from server response you may use :
NSDictionary *myDict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error: &error];
After that you can get objects and keys from myDict
The good tutorial you can find here http://www.raywenderlich.com/5492/
Try this
NSDictionary *sampledict = #{#"email":email,#"password":password,#"apikey":apikey};
NSData *dataJson = [NSJSONSerialization dataWithJSONObject:sampledict options:0 error:NULL];
NSMutableURLRequest *loginRequest = [[NSMutableURLRequest alloc] initWithURL:url];
loginRequest.HTTPMethod = #"POST";
loginRequest.HTTPBody = dataJson;
//add these lines
[loginRequest setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[loginRequest setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
//remaining is the same in your code
For some reason I always get Endpoint not found., but when I put it in the browser it works perfectly. I'm sure doing something wrong..
- (void)requestLoad:(NSString *)req_udid Age:(NSString *)req_age Gender:(NSString *)req_gender CheckBoxes:(NSString *)req_checkBoxes
{
NSString *post = [NSString stringWithFormat:#"/UpdatePersonalInterests/%#/%#/%#/%#/0",req_udid, req_age, req_gender, req_checkBoxes];
NSData *postData = [post dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
//set up the request to the website
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:NSLocalizedStringFromTable(#"kServiceURL", #"urls", nil)]];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setValue:[NSString stringWithFormat:#"%d", [postData length]] forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody:postData];
NSError *error;
NSURLResponse *response;
NSData *urlData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSString *result = [[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSLog(#"%#",result);
}
Thanks!
It looks like you are using a Custom Service scheme. Did you register it in Target -> info - URLS Types? See the Apple Docs or Registering custom URL Schemes: Implementing Custom URL Schemes
So I've managed to do this with NSURLConnection and asynchronous request with this code:
- (void)getIntrests
{
NSString *req_udid = [PROUtils createOrLoadUserIdentifier];
NSString *webaddress = [kServiceBaseURL stringByAppendingString:[NSString stringWithFormat:#"/GetPersonalInterestsForUdid/%#",req_udid]];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:[NSURL URLWithString:webaddress] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:20];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:
^(NSURLResponse* response, NSData* data, NSError* error) {
NSString* dataString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
[[NSNotificationCenter defaultCenter] postNotificationName:kGotMediaFromServer object:dataString];
NSLog(#"Update response completed: %# with data: %# error: %#",response,dataString,error);
}];
}
Hope that it will be useful for someone.