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Send POST request using NSURLSession

由 孤人 提交于 2019-11-26 12:34:50

You could try using a NSDictionary for the params. The following will send the parameters correctly to a JSON server.

NSError *error;

NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil];
NSURL *url = [NSURL URLWithString:@"[JSON SERVER"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
                                                       cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                   timeoutInterval:60.0];

[request addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request addValue:@"application/json" forHTTPHeaderField:@"Accept"];

[request setHTTPMethod:@"POST"];
NSDictionary *mapData = [[NSDictionary alloc] initWithObjectsAndKeys: @"TEST IOS", @"name",
                     @"IOS TYPE", @"typemap",
                     nil];
NSData *postData = [NSJSONSerialization dataWithJSONObject:mapData options:0 error:&error];
[request setHTTPBody:postData];


NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {

}];

[postDataTask resume];

Hope this helps (I'm trying to sort a CSRF authenticity issue with the above - but it does send the params in the NSDictionary).

Motivation

Sometimes I have been getting some errors when you want to pass httpBody serialized to Data from Dictionary, which on most cases is due to the wrong encoding or malformed data due to non NSCoding conforming objects in the Dictionary.

Solution

Depending on your requirements one easy solution would be to create a String instead of Dictionary and convert it to Data. You have the code samples below written on Objective-C and Swift 3.0.

Objective-C

// Create the URLSession on the default configuration
NSURLSessionConfiguration *defaultSessionConfiguration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *defaultSession = [NSURLSession sessionWithConfiguration:defaultSessionConfiguration];

// Setup the request with URL
NSURL *url = [NSURL URLWithString:@"yourURL"];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url];

// Convert POST string parameters to data using UTF8 Encoding
NSString *postParams = @"api_key=APIKEY&email=example@example.com&password=password";
NSData *postData = [postParams dataUsingEncoding:NSUTF8StringEncoding];

// Convert POST string parameters to data using UTF8 Encoding
[urlRequest setHTTPMethod:@"POST"];
[urlRequest setHTTPBody:postData];

// Create dataTask
NSURLSessionDataTask *dataTask = [defaultSession dataTaskWithRequest:urlRequest completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
    // Handle your response here
}];

// Fire the request
[dataTask resume];

Swift

// Create the URLSession on the default configuration
let defaultSessionConfiguration = URLSessionConfiguration.default
let defaultSession = URLSession(configuration: defaultSessionConfiguration)

// Setup the request with URL
let url = URL(string: "yourURL")
var urlRequest = URLRequest(url: url!)  // Note: This is a demo, that's why I use implicitly unwrapped optional

// Convert POST string parameters to data using UTF8 Encoding
let postParams = "api_key=APIKEY&email=example@example.com&password=password"
let postData = postParams.data(using: .utf8)

// Set the httpMethod and assign httpBody
urlRequest.httpMethod = "POST"
urlRequest.httpBody = postData

// Create dataTask
let dataTask = defaultSession.dataTask(with: urlRequest) { (data, response, error) in
    // Handle your response here
}

// Fire the request
dataTask.resume()

You can use https://github.com/mxcl/OMGHTTPURLRQ

id config = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:someID];
id session = [NSURLSession sessionWithConfiguration:config delegate:someObject delegateQueue:[NSOperationQueue new]];

OMGMultipartFormData *multipartFormData = [OMGMultipartFormData new];
[multipartFormData addFile:data1 parameterName:@"file1" filename:@"myimage1.png" contentType:@"image/png"];

NSURLRequest *rq = [OMGHTTPURLRQ POST:url:multipartFormData];

id path = [[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"upload.NSData"];
[rq.HTTPBody writeToFile:path atomically:YES];

[[session uploadTaskWithRequest:rq fromFile:[NSURL fileURLWithPath:path]] resume];
Teja Kumar Bethina

Swift 2.0 solution is here:

 let urlStr = “http://url_to_manage_post_requests” 
 let url = NSURL(string: urlStr) 
 let request: NSMutableURLRequest =
 NSMutableURLRequest(URL: url!) request.HTTPMethod = "POST"
 request.setValue(“application/json” forHTTPHeaderField:”Content-Type”)
 request.timeoutInterval = 60.0 
 //additional headers
 request.setValue(“deviceIDValue”, forHTTPHeaderField:”DeviceId”)

 let bodyStr = “string or data to add to body of request” 
 let bodyData = bodyStr.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true) 
 request.HTTPBody = bodyData

 let session = NSURLSession.sharedSession()

 let task = session.dataTaskWithRequest(request){
             (data: NSData?, response: NSURLResponse?, error: NSError?) -> Void in

             if let httpResponse = response as? NSHTTPURLResponse {
                print("responseCode \(httpResponse.statusCode)")
             }

            if error != nil {

                 // You can handle error response here
                 print("\(error)")
             }else {
                  //Converting response to collection formate (array or dictionary)
                 do{
                     let jsonResult: AnyObject = (try NSJSONSerialization.JSONObjectWithData(data!, options:
 NSJSONReadingOptions.MutableContainers))

                     //success code
                 }catch{
                     //failure code
                 }
             }
         }

   task.resume()

If you are using Swift, the Just library does this for you. Example from it's readme file:

//  talk to registration end point
Just.post(
    "http://justiceleauge.org/member/register",
    data: ["username": "barryallen", "password":"ReverseF1ashSucks"],
    files: ["profile_photo": .URL(fileURLWithPath:"flash.jpeg", nil)]
) { (r)
    if (r.ok) { /* success! */ }
}

Teja Kumar Bethina's code changed for Swift 3:

    let urlStr = "http://url_to_manage_post_requests"
    let url = URL(string: urlStr)

    var request: URLRequest = URLRequest(url: url!)

    request.httpMethod = "POST"

    request.setValue("application/json", forHTTPHeaderField:"Content-Type")
    request.timeoutInterval = 60.0

    //additional headers
    request.setValue("deviceIDValue", forHTTPHeaderField:"DeviceId")

    let bodyStr = "string or data to add to body of request"
    let bodyData = bodyStr.data(using: String.Encoding.utf8, allowLossyConversion: true)
    request.httpBody = bodyData

    let task = URLSession.shared.dataTask(with: request) {
        (data: Data?, response: URLResponse?, error: Error?) -> Void in

        if let httpResponse = response as? HTTPURLResponse {
            print("responseCode \(httpResponse.statusCode)")
        }

        if error != nil {

            // You can handle error response here
            print("\(error)")
        } else {
            //Converting response to collection formate (array or dictionary)
            do {
                let jsonResult = (try JSONSerialization.jsonObject(with: data!, options:
                    JSONSerialization.ReadingOptions.mutableContainers))

                //success code
            } catch {
                //failure code
            }
        }
    }

    task.resume()

    use like this.....

    Create file

    #import <Foundation/Foundation.h>`    
    #import "SharedManager.h"
    #import "Constant.h"
    #import "UserDetails.h"

    @interface APISession : NSURLSession<NSURLSessionDelegate>
    @property (nonatomic, retain) NSMutableData *responseData;
    +(void)postRequetsWithParam:(NSMutableDictionary* )objDic withAPIName:(NSString* 
    )strAPIURL completionHandler:(void (^)(id result, BOOL status))completionHandler;
    @end

****************.m*************************
    #import "APISession.h"
    #import <UIKit/UIKit.h>
    @implementation APISession

    +(void)postRequetsWithParam:(NSMutableDictionary *)objDic withAPIName:(NSString 
    *)strAPIURL completionHandler:(void (^)(id, BOOL))completionHandler
    {
    NSURL *url=[NSURL URLWithString:strAPIURL];
    NSMutableURLRequest *request=[[NSMutableURLRequest alloc]initWithURL:url];
    [request setHTTPMethod:@"POST"];
    [request addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
    NSError *err = nil;

    NSData *data=[NSJSONSerialization dataWithJSONObject:objDic options:NSJSONWritingPrettyPrinted error:&err];
    [request setHTTPBody:data];

    NSString *strJsonFormat = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    NSLog(@"API URL: %@ \t  Api Request Parameter ::::::::::::::%@",url,strJsonFormat);
    //    NSLog(@"Request data===%@",objDic);
    NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
    NSURLSession *session = [NSURLSession sessionWithConfiguration: defaultConfigObject delegate: nil delegateQueue: [NSOperationQueue mainQueue]];

    //  NSURLSession *session=[NSURLSession sharedSession];

    NSURLSessionTask *task=[session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error)
                            {
                                if (error==nil) {
                                    NSDictionary *dicData=[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];\
                                    NSLog(@"Response Data=============%@",dicData);
                                    if([[dicData valueForKey:@"tokenExpired"]integerValue] == 1)
                                    {

                                        NSLog(@"hello");
                                        NSDictionary *dict = [NSDictionary dictionaryWithObject:@"Access Token Expire." forKey:@"message"];
                                        [[NSNotificationCenter defaultCenter] postNotificationName:@"UserLogOut" object:self userInfo:dict];
                                    }
                                    dispatch_async(dispatch_get_main_queue(), ^{
                                        completionHandler(dicData,(error == nil));
                                    });
                                    NSLog(@"%@",dicData);
                                }
                                else{
                                    dispatch_async(dispatch_get_main_queue(), ^{
                                        completionHandler(error.localizedDescription,NO);
                                    });
                                }
                            }];
    //    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
    [task resume];
    //    });
    }
    @end

    *****************************in .your view controller***********
    #import "file"
    txtEmail.text = [txtEmail.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];

    {
            [SVProgressHUD showWithStatus:@"Loading..."];
            [SVProgressHUD setDefaultMaskType:SVProgressHUDMaskTypeGradient];

            NSMutableDictionary *objLoginDic=[[NSMutableDictionary alloc] init];
            [objLoginDic setValue:txtEmail.text forKey:@"email"];
            [objLoginDic setValue:@0            forKey:kDeviceType];
            [objLoginDic setValue:txtPassword.text forKey:kPassword];
            [objLoginDic setValue:@"376545432"  forKey:kDeviceTokan];
            [objLoginDic setValue:@""           forKey:kcountryId];
            [objLoginDic setValue:@""           forKey:kfbAccessToken];
            [objLoginDic setValue:@0            forKey:kloginType];

            [APISession postRequetsWithParam:objLoginDic withAPIName:KLOGIN_URL completionHandler:^(id result, BOOL status) {

                [SVProgressHUD dismiss];

                NSInteger statusResponse=[[result valueForKey:kStatus] integerValue];
                NSString *strMessage=[result valueForKey:KMessage];
                if (status) {
                    if (statusResponse == 1)
                {
                        UserDetails *objLoginUserDetail=[[UserDetails alloc] 
                        initWithObject:[result valueForKey:@"userDetails"]];
                          [[NSUserDefaults standardUserDefaults] 
                        setObject:@(objLoginUserDetail.userId) forKey:@"user_id"];
                        [[NSUserDefaults standardUserDefaults] synchronize];
                        [self clearTextfeilds];
                        HomeScreen *obj=[Kiran_Storyboard instantiateViewControllerWithIdentifier:@"HomeScreen"];
                        [self.navigationController pushViewController:obj animated:YES];
                    }
                    else{
                        [strMessage showAsAlert:self];
                    }
                }
            }];
        }
**********use model class for represnt data*************

    #import <Foundation/Foundation.h>
    #import "Constant.h"
    #import <objc/runtime.h>


    @interface UserDetails : NSObject
    @property(strong,nonatomic) NSString *emailId,
    *deviceToken,
    *countryId,
    *fbAccessToken,
    *accessToken,
    *countryName,
    *isProfileSetup,
    *profilePic,
    *firstName,
    *lastName,
    *password;

    @property (assign) NSInteger userId,deviceType,loginType;

    -(id)initWithObject :(NSDictionary *)dicUserData;
    -(void)saveLoginUserDetail;
    +(UserDetails *)getLoginUserDetail;
    -(UserDetails *)getEmptyModel;
    - (NSArray *)allPropertyNames;
    -(void)printDescription;
       -(NSMutableDictionary *)getDictionary;

    @end

    ******************model.m*************

    #import "UserDetails.h"
    #import "SharedManager.h"

    @implementation UserDetails



      -(id)initWithObject :(NSDictionary *)dicUserData
       {
       self = [[UserDetails alloc] init];
       if (self)
       {
           @try {
               [self setFirstName:([dicUserData valueForKey:@"firstName"] != [NSNull null])? 
               [dicUserData valueForKey:@"firstName"]:@""];


               [self setUserId:([dicUserData valueForKey:kUserId] != [NSNull null])? 
               [[dicUserData valueForKey:kUserId] integerValue]:0];


               }
        @catch (NSException *exception) {
            NSLog(@"Exception: %@",exception.description);
        }
        @finally {
        }
    }
    return self;
}

    -(UserDetails *)getEmptyModel{
    [self setFirstName:@""];
    [self setLastName:@""];



    [self setDeviceType:0];


    return self;
       }

     -  (void)encodeWithCoder:(NSCoder *)encoder {
    //    Encode properties, other class variables, etc
    [encoder encodeObject:_firstName forKey:kFirstName];


    [encoder encodeObject:[NSNumber numberWithInteger:_deviceType] forKey:kDeviceType];

    }

    - (id)initWithCoder:(NSCoder *)decoder {
    if((self = [super init])) {
        _firstName = [decoder decodeObjectForKey:kEmailId];

        _deviceType= [[decoder decodeObjectForKey:kDeviceType] integerValue];

    }
    return self;
    }
    - (NSArray *)allPropertyNames
    {
    unsigned count;
    objc_property_t *properties = class_copyPropertyList([self class], &count);

    NSMutableArray *rv = [NSMutableArray array];

    unsigned i;
    for (i = 0; i < count; i++)
    {
        objc_property_t property = properties[i];
        NSString *name = [NSString stringWithUTF8String:property_getName(property)];
        [rv addObject:name];
    }

    free(properties);

    return rv; 
    } 

    -(void)printDescription{
    NSMutableDictionary *dic = [[NSMutableDictionary alloc] init];

    for(NSString *key in [self allPropertyNames])
    {
        [dic setValue:[self valueForKey:key] forKey:key];
    }
    NSLog(@"\n========================= User Detail ==============================\n");
    NSLog(@"%@",[dic description]);
    NSLog(@"\n=============================================================\n");
    }
    -(NSMutableDictionary *)getDictionary{
    NSMutableDictionary *dic = [[NSMutableDictionary alloc] init];
    for(NSString *key in [self allPropertyNames])
    {
        [dic setValue:[self valueForKey:key] forKey:key];
    }
    return dic;
    }
    #pragma mark
    #pragma mark - Save and get User details
    -(void)saveLoginUserDetail{
    NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:self];
    [Shared_UserDefault setObject:encodedObject forKey:kUserDefault_SavedUserDetail];
    [Shared_UserDefault synchronize];
    }
      +(UserDetails *)getLoginUserDetail{
      NSData *encodedObject = [Shared_UserDefault objectForKey:kUserDefault_SavedUserDetail];
    UserDetails *object = [NSKeyedUnarchiver unarchiveObjectWithData:encodedObject];
    return object;
   }
    @end


     ************************usefull code while add data into model and get data********

                   NSLog(@"Response %@",result);
                  NSString *strMessg = [result objectForKey:kMessage];
                 NSString *status = [NSString stringWithFormat:@"%@",[result 
                objectForKey:kStatus]];

            if([status isEqualToString:@"1"])
            {
                arryBankList =[[NSMutableArray alloc]init];

                NSMutableArray *arrEvents=[result valueForKey:kbankList];
                ShareOBJ.isDefaultBank = [result valueForKey:kisDefaultBank];
                if ([arrEvents count]>0)
                {

                for (NSMutableArray *dic in arrEvents)
                    {
                        BankList *objBankListDetail =[[BankList alloc]initWithObject:[dic 
                         mutableCopy]];
                        [arryBankList addObject:objBankListDetail];
                    }
           //display data using model...
           BankList *objBankListing  =[arryBankList objectAtIndex:indexPath.row];
标签
ios
objective-c
nsurlsession
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