How to do GET request via AFNetworking?

问题

I added directories AFNetworking and UIKit+AFNetworking to project manager. I use latest library 3.0.4

After I imported file AFNetworking.h in my class file .m. I found a lot examples how to make request to url, but information is old.

How to make GET request to URL and get data from server? Now function AFHTTPRequestOperation was removed.

This is first time working with libraries in xcode, I am beginner.

回答1:

AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:[NSURL URLWithString:@"http://google.com/"]];
NSMutableURLRequest *request = [httpClient requestWithMethod:@"GET"
                                                        path:@"http://google.com/api/pigs/"
                                                  parameters:nil];

AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];

[httpClient registerHTTPOperationClass:[AFHTTPRequestOperation class]];

[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

    // Print the response body in text
    NSLog(@"Response: %@", [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding]);

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];
[operation start];

=============================================

You can also use AFHTTPRequestOperation:

NSOperationQueue *networkQueue = [[NSOperationQueue alloc] init];

networkQueue.maxConcurrentOperationCount = 5;

NSURL *url = [NSURL URLWithString:@"https://example.com"];

NSURLRequest *request = [NSURLRequest requestWithURL:url];

AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] 
initWithRequest:request];

[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {


    NSString *string = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];

    NSLog(@"%@", string);

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

    NSLog(@"%s: AFHTTPRequestOperation error: %@", __FUNCTION__, error);
}];
[networkQueue addOperation:operation];

回答2:

For AFNetworking 3.x:

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
[manager GET:@"http://example.com/resources.json" parameters:nil progress:nil success:^(NSURLSessionTask *task, id responseObject) {
    NSLog(@"JSON: %@", responseObject);
} failure:^(NSURLSessionTask *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

回答3:

please try below answer.
+(void)callAFWS:(NSDictionary *)dict withURL:(NSString *)strUrl 
withToken:(NSString *)strToken withBlock:(dictionary)block
{
AFHTTPSessionManager *manager = [[AFHTTPSessionManager alloc]initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];

[manager.requestSerializer setValue:strToken forHTTPHeaderField:@"Authorization"];

[manager GET:[NSString stringWithFormat:@"%@/%@",WebserviceUrl,strUrl] parameters:dict progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
    if (!responseObject)
    {
        NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
        [dict setObject:ServerResponceError forKey:@"error"];
        block(responseObject);
        return ;
    }
    block(responseObject);
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
    NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
    [dict setObject:ServerResponceError forKey:@"error"];
    block(dict);
}];
}

回答4:

With AFNetworking 3.0 you need to make request as under:

NSURL * urlStr = [NSURL URLWithString:strURL];

NSDictionary *dictParameters = @{@"user[height]": height,@"user[weight]": weight};

AFHTTPSessionManager * manager = [AFHTTPSessionManager manager];


[manager GET:url.absoluteString parameters:dictParameters success:^(NSURLSessionTask *task, id responseObject) {
    NSLog(@"PLIST: %@", responseObject);

} failure:^(NSURLSessionTask *operation, NSError *error) {
    NSLog(@"Error: %@", error);

}];

回答5:

(void)postDatabyAF{

NSString *url;

NSDictionary *dict;

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

manager.responseSerializer = [AFJSONResponseSerializer serializer];

manager.responseSerializer = [AFJSONResponseSerializer serializerWithReadingOptions:
                              NSJSONReadingAllowFragments];

[manager POST:url parameters:dict success:^(AFHTTPRequestOperation * _Nonnull operation, id  _Nonnull responseObject) {

    NSLog(@" operation.responseData  %@",operation.responseData);
    NSLog(@" operation.response %@",operation.response);
    NSLog(@"statusCode %ld",operation.response.statusCode);

} failure:^(AFHTTPRequestOperation * _Nullable operation, NSError * _Nonnull error) {

    if (error) {

    }
    else{


    }
}];

}

来源：https://stackoverflow.com/questions/34639175/how-to-do-get-request-via-afnetworking