AFHTTPSessionManager *session = [AFHTTPSessionManager manager];

session.requestSerializer = [AFJSONRequestSerializer serializer];

NSMutableDictionary *params = [NSMutableDictionary dictionary];

params[@"start"] = @"";

params[@"end"] = @"";

[session POST:urlStr parameters:params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

    NSLog(@"请求成功");

} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

    NSLog(@"请求成功");

}];

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);

}];