// 判断文件夹是否存在，不存在则创建对应文件夹
    
    NSFileManager *fileManager = [NSFileManager defaultManager];
    
    NSString *path = @"/Users/apple/Desktop/导出路径/嘻嘻";
    
    BOOL isDir = FALSE;
    
    BOOL isDirExist = [fileManager fileExistsAtPath:path isDirectory:&isDir];
    
    if(!(isDirExist && isDir)) {
        
        BOOL bCreateDir = [fileManager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];
        
        if(!bCreateDir){
            
            NSLog(@"创建失败!");
            
        }
        
        NSLog(@"创建成功!");
        NSLog(@"%@",path);
        
    }else {
        
        NSLog(@"已经有该文件夹!");
        
    }