Question

可能重复：
Tutorials for using HTTP POST and GET on the iPhone in Objective-C

是否需要创建一个具有正确信息的NSArray，例如id = 1，name = @“John”，得分= 100然后发送它并从服务器接收响应？

可能将其显示在NSLog（）;

中

任何人都可以通过将我链接到一个好的教程来帮助回答这个问题，我也不想使用ASIHTTPRequest。我知道这会更简单，但是如果没有使用预先编写的代码id就可以做一些事情，而是学习如何使用基础框架提供的功能来创建一些东西，然后再使用别人的类。

Answer 1

您正在寻找的是NSMutableURLRequest和addValue：forHTTPHeaderField方法。

使用您希望与之通信的URL创建请求。将要传输的值加载到标头或HTTPBody中，设置HTTPMethod，然后使用NSURLConnection方法发送和接收响应。

对于包含信息的数组，您可以简单地枚举数组并将值添加到HTTPHeaderFields。这实际上取决于服务器设置接收的内容。

http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/URLLoadingSystem/URLLoadingSystem.html#//apple_ref/doc/uid/10000165i

有更多信息。

NSString *urlString = @"http://yoururl.com";
NSURL *url = [NSUL URLWithString:urlString];
NSMutalbeURLRequest *request = [NSMutableURLRequest requestWithURL:url];

NSDictionary *headerInformation = [NSDictionary dictionaryWithObjectsAndKeys:@"1",@"id",@"John",@"name",@"100",@"score", nil];
for (NSString *key in [headerInformation allKeys])
    {
        [request addValue:[dict valueForKey:key] forHTTPHeaderField:key];
    }
    NSHTTPURLResponse *response = nil;
    NSError *error = nil;
    // this will perform a synchronous GET operation passing the values you specified in the header (typically you want asynchrounous, but for simplicity of answering the question it works)
    NSData *responseData = [NSURLConnection sendSynchronousRequest:request reuturningResponse:&response error:&error];
    NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
    NSLog(@"Response: %@", responseString);
    [responseString release];

Answer 2

使用NSData发送网址请求并存储响应然后重新发明轮子可能更容易。这里有一些类似于我的生产项目中的代码：

+ (NSData *)getProfiles {
    NSString *token = [[NSUserDefaults standardUserDefaults] objectForKey:@"token"];

    //  Create string of the URL
    NSString *serviceURL = [NSString stringWithFormat:@"http://www.myurlhere.com/getProfiles.php?token=%@", token];
    NSLog(@"Service URL : %@", serviceURL);

    //  Create a NSURL out of the string created earlier.  Use NSASCIIStringEncoding to make it properly URL encoded (replaces " " with "+", etc)
    NSURL *URL = [NSURL URLWithString:[serviceURL stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding]];

    //  Request the url and store the response into NSData
    NSData *data = [NSData dataWithContentsOfURL:URL];
    if (!data) {
        return nil;
    }

    //  Since I know the response will be 100% strings, convert the NSData to NSString
    NSString *response = [[[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding] autorelease];

    //  Test response and return a string that an XML Parser can parse
    if (![response isEqualToString:@"UNAUTHORIZED"]) {
        response = [response stringByReplacingOccurrencesOfString:@"&" withString:@"&#x26;"];
        data = [response dataUsingEncoding:NSASCIIStringEncoding];
        return data;
    } else {
        return nil;
    }
}

NSLog输出：

[Line: 476] +[WebSupport getProfiles]: Service URL : http://www.myurlhere.com/getProfiles.php?token=abcdef0123456789abcdef0123456789

使用Objective -C创建POST / GET请求

2 个答案: