AFNetworking
AFNetworking是一种网络请求第三方封装的类库.
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| _manager = [AFHTTPSessionManager manager];
_manager.responseSerializer = [AFJSONResponseSerializer serializer];
NSString * ss = [path stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];//将汉字进行一下编码
_manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html", @"application/json", nil];
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GET请求
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| AFHTTPRequestOperationManager*manager=[AFHTTPRequestOperationManager manager];
//2.0bug 必须要设置text/html 否则报1016错误
manager.responseSerializer.acceptableContentTypes=[NSSet setWithObject:@"text/html"];
[manager GET:@"http://1000phone.net:8088/app/openfire/api/user/near.php?latitude=40.02212&longitude=116.4343&radius=100" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
}];
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POST请求
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| AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer.acceptableContentTypes=[NSSet setWithObject:@"text/html"];
NSDictionary*dic=@{@"key":@"value"};
[manager POST:@"http://1000phone.net:8088/app/openfire/api/user/near.php?latitude=40.02212&longitude=116.4343&radius=100" parameters:dic success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"Error: %@", error);
}];
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表单式上传文件
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| [manager POST:@"" parameters:dic constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
NSURL*file= [NSURL fileURLWithPath:@"图片地址"];
[formData appendPartWithFileURL:file name:@"image" error:nil];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
}];
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如何使用AFNetworking下载一个文件？
先创建一个AFURLConnectionOperation对象，然后再使用它的属性outputStream进行处理
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| operation.outputStream = [NSOutputStream outputStreamToFileAtPath:@"download.zip" append:NO];
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当应用程序退出时，如何保持持续的请求？
AFURLConnectionOperation有一个叫setShouldExecuteAsBackgroundTaskWithExpirationHandler:的方法用于处理在应用程序进入后台后，进行持续的请求
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| [self setShouldExecuteAsBackgroundTaskWithExpirationHandler:^{
}];
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问题
AFNetWorking的JSON解析默认库是使用的AFJSONRequestOperation模式，只支持text/json，application/json，text/javascript，所以如果出现code=-1016错误则说明当前的JSON解析模式是text/html，所以要加上这段代码
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| AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer.acceptableContentTypes=[NSSet setWithObject:@"text/html"];
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XML 请求
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| NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://api.flickr.com/services/rest/?method=flickr.groups.browse&api_key=b6300e17ad3c506e706cb0072175d047&cat_id=34427469792@N01&format=rest"]];
AFXMLRequestOperation *operation = [AFXMLRequestOperation XMLParserRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, NSXMLParser *XMLParser) {
XMLParser.delegate = self;
[XMLParser parse];
} failure:nil];
[operation start];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 100.0f, 100.0f)];
[imageView setImageWithURL:[NSURL URLWithString:@"http://i.imgur.com/r4uwx.jpg"] placeholderImage:[UIImage imageNamed:@"placeholder-avatar"]];
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图片上传处理，监测上传状态：
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| NSURL *url = [NSURL URLWithString:@"http://api-base-url.com"];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
NSData *imageData = UIImageJPEGRepresentation([UIImage imageNamed:@"avatar.jpg"], 0.5);
NSMutableURLRequest *request = [httpClient multipartFormRequestWithMethod:@"POST" path:@"/upload" parameters:nil constructingBodyWithBlock: ^(id formData) {
[formData appendPartWithFileData:imageData name:@"avatar" fileName:@"avatar.jpg" mimeType:@"image/jpeg"];
}];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[operation setUploadProgressBlock:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
NSLog(@"Sent %lld of %lld bytes", totalBytesWritten, totalBytesExpectedToWrite);
}];
[operation start];
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在线流媒体请求
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| NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://localhost:8080/encode"]];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
operation.inputStream = [NSInputStream inputStreamWithFileAtPath:[[NSBundle mainBundle] pathForResource:@"large-image" ofType:@"tiff"]];
operation.outputStream = [NSOutputStream outputStreamToMemory];
[operation start];
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