如何在iOS中使用Objective-C进行POST调用并发送参数

Question

我添加了使用oauth2在iOS 7应用程序中在LinkedIn上共享文章的功能。 我已经通过身份验证并具有访问令牌。 文档似乎对此非常清楚，但是奇怪的是，实际上发布时，事情变得很模糊并且没有很好的文档记录。 我知道我在这里发布： http : //api.linkedin.com/v1/people/~/shares附加了令牌。

iOS是一个巨大的平台，linkedin非常流行，我以为我缺少明显的东西，但是很多谷歌搜索都显示了相同的旧项目引用。 一个示例使用oauth2并确实使我通过身份验证，但我无法进行任何api调用。 我是否错过了linkedin本身的页面？ 我已经阅读了共享API页面，但是当涉及到api调用时，没有关于使用Objective-C的单个示例。 我不想做任何事情，但是我对缺乏信息感到惊讶。

每个示例使用OAMutableRequest，构建字典等都具有相同的代码。 但是他们从不解释这是什么，如何合并该库或其他任何东西，只是奇怪。 这是公认的最佳实践吗，该库在3年内没有更新，因此在弧和其他方面存在错误。 所有代码示例均提及相同的“消费者”属性，而没有讨论如何或为什么需要这样做。 我似乎无法找到如何使用参数linkedin需要在网站上发布内容的方式构建发布请求。 OAMutableRequest是唯一的方法吗？ 如果是这样，人们如何对其进行更新？ 如果没有，那么如何使用NSURLRequest或更简单的方法构建请求。 非常感谢！

Answer 1

要发布json数据，您可以尝试以下操作

-(void)PostJson {

__block NSMutableDictionary *resultsDictionary;

NSDictionary *userDictionary = [[NSDictionary alloc] initWithObjectsAndKeys:@"first title", @"title",@"1",@"blog_id", nil];//if your json structure is something like {"title":"first title","blog_id":"1"}
if ([NSJSONSerialization isValidJSONObject:userDictionary]) {//validate it
NSError* error;
NSData* jsonData = [NSJSONSerialization dataWithJSONObject:userDictionary options:NSJSONWritingPrettyPrinted error: &error];
NSURL* url = [NSURL URLWithString:@"www.google.com"];
NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:30.0];
[request setHTTPMethod:@"POST"];//use POST 
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setValue:[NSString stringWithFormat:@"%d",[jsonData length]] forHTTPHeaderField:@"Content-length"];
[request setHTTPBody:jsonData];//set data
 __block NSError *error1 = [[NSError alloc] init];

 //use async way to connect network
[NSURLConnection sendAsynchronousRequest:request queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse* response,NSData* data,NSError* error)
{
    if ([data length]>0 && error == nil) {
        resultsDictionary = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:&error1];
        NSLog(@"resultsDictionary is %@",resultsDictionary);

    } else if ([data length]==0 && error ==nil) {
        NSLog(@" download data is null");
    } else if( error!=nil) {
        NSLog(@" error is %@",error);
    }
}];
    }
}

Answer 2

我使用此代码进行URL调用并通过post发送数据

NSURL *url = [NSURL URLWithString:@"http://[YOUR URL]/comment.php?"];
//The URL where you send the POST

NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url
                                                   cachePolicy:NSURLRequestReloadIgnoringCacheData
                                               timeoutInterval:60];

[req setHTTPMethod:@"POST"];    //Set method to POST
[req setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
//Set headers for the data, in this case TEXT

//Valor del post
//NSString *UUID = [[NSUUID UUID] UUIDString];
NSString *postData = [NSString stringWithFormat:@"&id=%@&name=%@&comment=%@", self.postID, userName, messageToPost]; //Send the POST Values
    NSLog(@"self.postID == %@", self.postID); //Check the POST data

NSString *length = [NSString stringWithFormat:@"%d", [postData length]];
[req setValue:length forHTTPHeaderField:@"Content-Length"];   //Set the POST length 

NSLog(@" tamano: %d", postData.length); //Check the length of the POST to send

[req setHTTPBody:[postData dataUsingEncoding:NSASCIIStringEncoding]]; //Send the content to the URL

NSHTTPURLResponse* urlResponse = nil; //Response
NSError *err = [[NSError alloc] init];  //Allocate error

NSData *responseData = [NSURLConnection sendSynchronousRequest:req
                                             returningResponse:&urlResponse
                                                         error:&err];
//Guardamos los parametros que obtuvimos en la respuesta
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSASCIIStringEncoding]; //Save the response as string
NSLog(@"Respueta: %@", responseString); //Check the response

希望这对您有帮助

Answer 3

首先，在#import“ AFAppDotNetAPIClient.m”中创建一个常量，您可以通过导入AFNetworking Framework进行添加，并在.m文件中创建一个常量

static NSString * const AFAppDotNetAPIBaseURLString = @"http://demo.urmart.in/u-ryd/"; 

用您的网址替换它。

NSString *urlString = @"trip_add.php";


[[AFAppDotNetAPIClient sharedClient] POST:urlString parameters:tripData  constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

    } success:^(NSURLSessionDataTask *task, id responseObject) {

        NSError *error = nil;
        NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:responseObject options:kNilOptions error:&error];
        NSString *sucessStr = [NSString stringWithFormat:@"%@",[dict objectForKey:@"msg"]];

        NSLog(@"%@",dict);
        NSLog(@"%@",sucessStr);
    } failure:^(NSURLSessionDataTask *task, NSError *error) {


}];

tripData =  // insert your Dictionary Here and Make it Work 

希望最好的。

Answer 4

-(void)postApiCall:(NSMutableDictionary *)dic urlStr:(NSString *)urlStr response:(NSMutableArray *)response{
    NSMutableDictionary *completeDictionary = [NSMutableDictionary new];
    [completeDictionary setObject:dic forKey:@"[project name]"];
    NSLog(@"completeDictionary==> %@",[completeDictionary description]);
    NSData* jsonData = [NSJSONSerialization dataWithJSONObject:completeDictionary options:NSJSONWritingPrettyPrinted error:Nil];
    NSString *str = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
    NSLog(@"jsonDatastr %@",str);
    NSURL * serviceUrl = [NSURL URLWithString:urlStr];
    NSLog(@"REquest URL >> %@",serviceUrl);
    NSLog(@"REquest XML >> %@",str);
    NSMutableURLRequest * serviceRequest = [NSMutableURLRequest requestWithURL:serviceUrl];
    [serviceRequest setValue:@"Application/json" forHTTPHeaderField:@"Content-type"];
    [serviceRequest setHTTPMethod:@"POST"];
    [serviceRequest setHTTPBody:[str dataUsingEncoding:NSUTF8StringEncoding]];
    NSURLResponse *serviceResponse;
    NSError *serviceError;
    NSData *responseData = [NSURLConnection sendSynchronousRequest:serviceRequest returningResponse:&serviceResponse error:&serviceError];
    if (responseData) {

        [self parsePostApiData:responseData responseP:response];
    }
    else{
        //        AlertViewClass *a = [[AlertViewClass alloc] init];
        //        [a showMessage:@"Cannot connect to internet." title:@"Skillgrok"];
    }

}


-(void)parsePostApiData:(NSData *)response responseP:(NSMutableArray *)responseP{
    id jsonObject = Nil;
    NSString *charlieSendString = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
    NSLog(@"ResponseString %@",charlieSendString);
    if (response==nil) {
        NSLog(@"No internet connection.");
//                AlertViewClass *a = [[AlertViewClass alloc] init];
//                [a showMessage:@"Cannot connect to internet." title:@"Skillgrok"];
    }
    else{
        NSError *error = Nil;
        jsonObject =[NSJSONSerialization JSONObjectWithData:response options:kNilOptions error:&error];

        if ([jsonObject isKindOfClass:[NSArray class]]) {
            NSLog(@"Probably An Array");
        }
        else
        {
            NSLog(@"Probably A Dictionary");
            NSDictionary *jsonDictionary=(NSDictionary *)jsonObject;
            NSLog(@"jsonDictionary %@",[jsonDictionary description]);
            if (jsonDictionary) {
                [responseP addObject:jsonDictionary];
            }
        }
    }
}