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- (void)downloadFile: (NSURL *)url filePath: (NSString *)filePath process:(void(^)(bool success)) process
{
    if (![FileUtils fileExists:filePath]) {
        [FileUtils mkdirIfNotEist:filePath];
    }
    
    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
    AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    
    NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
        NSURL *documentsDirectoryURL = [NSURL fileURLWithPath:filePath isDirectory:YES];
        return [documentsDirectoryURL URLByAppendingPathComponent:[response suggestedFilename]];
    } completionHandler:^(NSURLResponse *response, NSURL *filePathTmp, NSError *error) {
        process(YES);
    }];
    
    [downloadTask resume];
}

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 #import <QuartzCore/QuartzCore.h>

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imageView.layer.cornerRadius=10;
imageView.layer.masksToBounds = YES;

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BOOL ab = [db executeUpdateWithFormat:@"insert into users(name) values(%@)", @"test"];
if (ab) {
    
}else{
    NSLog(@"#########insert error message:%@", [db lastErrorMessage]);
}