#import "AFHTTPSessionManager.h"
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
[manager GET:@"http://ods5pg0qp.bkt.clouddn.com/mysqlconsole/mysqlconsole.json" parameters:nil progress:^(NSProgress * _Nonnull downloadProgress) {
}success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
NSLog(@"这里打印请求成功要做的事 %@",responseObject);
NSDictionary *d = responseObject;
NSLog(@"%@,%@",d[@"versionCode"],d[@"versionName"]);
}failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
NSLog(@"%@",error); //这里打印错误信息
}];