-1
我用下面的代碼來測試從代碼中提供的鏈接中獲取數據,但是數據和響應都是零。爲什麼RESTful for web服務不適用於iOS(代碼提供)?
RestViewController.h
#import <UIKit/UIKit.h>
@interface RestViewController : UIViewController
@property (nonatomic, strong) IBOutlet UILabel *greetingId;
@property (nonatomic, strong) IBOutlet UILabel *greetingContent;
- (IBAction)fetchGreeting;
@end
RestViewController.m
#import "RestViewController.h"
@interface RestViewController()
@end
@implementation RestViewController
- (IBAction)fetchGreeting;
{
NSURL *url = [NSURL URLWithString:@"http://rest-service.guides.spring.io/greeting"];
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];
self.greetingId.text = [[greeting objectForKey:@"id"] stringValue];
self.greetingContent.text = [greeting objectForKey:@"content"];
}
}];
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self fetchGreeting];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
在情節串連圖板,有3個UI組件,兩個文本標籤和一個按鈕。點擊按鈕(fetchGreeting)後,標籤應從鏈接中提取數據,並使用正確的數據更新兩個文本標籤(greetingID和greetingContent)。
我完全按照以下鏈接中的說明進行操作,但它似乎仍無法獲取任何數據,但似乎無法弄清楚。任何指導將不勝感激。
這是ios9如果是沒有ü處理與HTTP安全異常? – bolnad
@bolnad我使用xcode的mac是OS X –
沒有兄弟我的意思是你的發展目標 – bolnad