如何在iOS5中将JSON数据对象发布到服务器？

我想使用JSON数据类型将在iOS上创建的新对象发送到接收服务器，并使用POST方法。据我所知，在iOS中接收数据从服务器，是所有的JSON处理都被苹果公司简化了iOS 5的引入。但是与GET JSON对象相反，POST的这些并没有真正描述在任何我能找到的地方...如何在iOS5中将JSON数据对象发布到服务器？

我走上尝试解决这个问题看上去如下第一步：

//build an info object and convert to json 
    NSDictionary *newDatasetInfo = [NSDictionary dictionaryWithObjectsAndKeys:name, @"name", language, @"language", nil]; 

    //convert object to data 
    NSData* jsonData = [NSJSONSerialization dataWithJSONObject:newDatasetInfo options:kNilOptions error:&error]; 

    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 
    [request setURL:someURLSetBefore]; 
    [request setHTTPMethod:@"POST"]; 
    // any other things to set in request? or working this way? 

    [[NSURLConnection alloc] initWithRequest:request delegate:self]; 
    // What to do with NSURLConnection? Or how to send differently?

但我真的不知道如何使用POST方法发送JSON对象到服务器。有谁能帮我解决吗？

来源

2012-07-11 CGee

我的工作，这也使周围试图一点，这是我的代码：

来源

2012-07-11 16:37:56 CGee

你能上什么是你的代码可能发生的阐述？我现在在自己的应用程序中使用过它，但我真的不知道它在做什么。我理解字典并将其转换为JSON数据，但URLRequest和URLConnection的所有内容对我而言都是未知的。任何澄清将是伟大的！ – Jonathan 2013-09-04 17:37:26

NSURLRequest基本上是一个对象，用于设置Web抓取的属性。在正常的提取中，你会自动设置最常用的默认值，但是因为我想发送数据，所以我想使用HTTP POST方法，并且导致我想要接收JSON对象，所以我通过设置Content-Type并将HTTP头字段接受为JSON格式。要详细了解HTTP协议，特别是HTTP头，只需搜索它们或在这里阅读http://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol和这里http://en.wikipedia.org/wiki/List_of_HTTP_header_fields。 – CGee 2013-09-05 12:36:13

要了解有关NSURLConnection的更多信息，我认为最好的方法是在Apples文档中阅读它的类引用https://developer.apple.com/library/ios/documentation/Cocoa/Reference/Foundation/Classes/NSURLConnection_Class/Reference/的reference.html。总的来说，我只能鼓励你首先看一看Apples文档，因为它是学习这些东西的好的（绝对是最新的）源代码。 – CGee 2013-09-05 12:41:12

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 
    [request setURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://webstar52.com/demo/webcommunity/work.php"]]]; 
    NSString *post = [NSString stringWithFormat:@"&tag=%@&user_id=%@",@"getcontact",@"10408"]; 
    NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; 
    NSString *postLength = [NSString stringWithFormat:@"%d",[postData length]]; 
    [request setHTTPMethod:@"POST"];  
    [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; 
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Current-Type"]; 
    [request setHTTPBody:postData]; 
    conn = [[NSURLConnection alloc]initWithRequest:request delegate:self];

来源

2013-12-30 14:52:53 Deepak

的NSString * strUrl = @ “URL”; NSURL * url = [NSURL URLWithString：strUrl];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:60.0]; 

// For set postdata in string 
NSString *strPatientID = [NSString stringWithFormat:@"%@%@%@%@",self.txtDegit1.text,self.txtDegit2.text,self.txtDegit3.text,self.txtDegit4.text]; 
NSString *deviceToken = @""; 
postString = [NSString stringWithFormat:@"practiceid=%@&email=%@&password=%@&devicetoken=%@",strPatientID,self.txtUsername.text,self.txtPassword.text,deviceToken]; 


NSMutableData *httpDataBody = [NSMutableData data]; 
[httpDataBody appendData:[postString dataUsingEncoding:NSUTF8StringEncoding]]; 

NSString *strPostLength = [NSString stringWithFormat:@"%lu",[httpDataBody length]]; 

if ([httpDataBody length ] > 0){ 

    [request addValue:@"application/x-www-form-urlencoded charset=utf-8" forHTTPHeaderField:@"Content-Type"]; 
    [request setHTTPMethod:@"POST"]; 
    [request addValue:strPostLength forHTTPHeaderField:@"Content-Type"]; 
    [request setHTTPBody:httpDataBody]; 

} 

urlConnection = [[NSURLConnection alloc]initWithRequest:request delegate:self]; 
[urlConnection start];

来源

2015-02-22 09:19:21

- (IBAction)txtFetchData2:(id)sender { 
NSString *queryString = [NSString stringWithFormat:@"http://example.com/username.php?name=%@", [self.txtName text]]; 
NSMutableURLRequest *theRequest=[NSMutableURLRequest 
          requestWithURL:[NSURL URLWithString: 
              queryString] 
          cachePolicy:NSURLRequestUseProtocolCachePolicy 
          timeoutInterval:60.0]; 
NSDictionary* jsonDictionary = [NSDictionary dictionaryWithObjectsAndKeys: 
           @"Value1", @"Key1", 
           @"Value2", @"Key2", 
           nil]; 
NSError *error; 
NSData* jsonData = [NSJSONSerialization dataWithJSONObject:jsonDictionary 
         options:NSJSONWritingPrettyPrinted error:&error]; 
[theRequest setHTTPMethod:@"POST"]; 
[theRequest addValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; 
// should check for and handle errors here but we aren't 
[theRequest setHTTPBody:jsonData]; 
[NSURLConnection sendAsynchronousRequest:theRequest queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) { 
    if (error) { 
     //do something with error 
    } else { 
     NSString *responseText = [[NSString alloc] initWithData:data encoding: NSASCIIStringEncoding]; 
     NSLog(@"Response: %@", responseText); 

     NSString *newLineStr = @"\n"; 
     responseText = [responseText stringByReplacingOccurrencesOfString:@"<br />" withString:newLineStr];    
     [self.lblData setText:responseText]; 
    } 
}]; 
}

来源

2015-12-08 07:47:13

如何在iOS5中将JSON数据对象发布到服务器？

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