使用ASIHTTPRequest异步提交数据

最新推荐文章于 2021-08-03 11:25:41 发布

原创最新推荐文章于 2021-08-03 11:25:41 发布 · 704 阅读

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本文介绍了一个使用 Objective-C 编写的 iOS 应用程序如何通过 ASIFormDataRequest 发送 JSON 数据到服务器的方法。该方法首先构造了包含 device_id、device 和 license 的参数字典，并通过 HTTP POST 请求发送这些参数到指定的 API 地址。文章详细展示了如何设置请求的完成和失败回调，以及如何处理服务器返回的数据。

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- (void)viewDidLoad
{
    [super viewDidLoad];
	//构造json
	NSDictionary * params = [[NSDictionary alloc] initWithObjectsAndKeys:
							device_id, @"device_id",
							device, @"device",
							license, @"license",
							nil];
	
	NSString *api = @"http://balabalabala";
	
	ASIFormDataRequest * request = [[self getASIHTTPFormDataRequestWithURL:api params:params] retain];
	[params release];
	
	
	[request setCompletionBlock:^{
		NSString * responseString = request.responseString;
		NSDictionary * responseDict = [responseString objectFromJSONString];
		NSLog(@"response: %@", responseDict);
		
		if ([responseDict isKindOfClass:[NSDictionary class]])
		{
			if ([[responseDict objectForKey:@"status"] integerValue] == 1)
			{
				//成功
				NSLog(@"send succuess");         
			}
			else
			{
				NSLog(@"send failed");
			}
		}
		else
		{
			NSLog(@"send failed, and erro,1111111111");
		}
		
		[request release];
	}];
	
	//异步方法
	[request setFailedBlock:^{
		dispatch_async(dispatch_get_main_queue(), ^{
			//出错提示
			NSLog(@"send failed, and erro,2222222222");
		});
		[request release];
	}];
	
	[request startAsynchronous];
}


//封装post请求数据
+ (ASIFormDataRequest *)getASIHTTPFormDataRequestWithURL:(NSString *)urlString
                                                 params:(NSDictionary *)params
{
    ASIFormDataRequest * request = nil;
    
    NSURL * url = [[NSURL alloc] initWithString:urlString];
    request = [[ASIFormDataRequest alloc] initWithURL:url];
    [url release];
    
    for (NSString * key in params)
    {
        id value = [params objectForKey:key];
        
        if ([value isKindOfClass:[NSString class]]
            || [value isKindOfClass:[NSNumber class]])
        {
            [request addPostValue:value forKey:key];
        }
        else if ([value isKindOfClass:[NSData class]])
        {
            [request addData:value forKey:key];
        }
        else if ([value isKindOfClass:[UIImage class]])
        {
            NSData * imageData = UIImagePNGRepresentation(value);
            [request addData:imageData forKey:key];
        }
    }
    [request setTimeOutSeconds:60.f];
    
    return [request autorelease];
}