-(NSDictionary *) parameterWithURL:(NSURL *) url {
NSMutableDictionary *parm = [[NSMutableDictionary alloc]init];
//传入url建立url组件类
NSURLComponents *urlComponents = [[NSURLComponents alloc] initWithString:url.absoluteString];
//回调遍历全部参数，添加入字典
[urlComponents.queryItems enumerateObjectsUsingBlock:^(NSURLQueryItem * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
[parm setObject:obj.value forKey:obj.name];
}];
return parm;
}
