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文件（word，excel等）的最佳方法是什么？

[英]What is the best way to save/load img/file(word,excel etc.) in php/asp.net application?

原文 2012-06-09 07:58:05 4 2 php/ asp.net/ mysql/ sql-server/ database

I'm currently a student and I aspire to become a great web developer :) 我目前是一名学生，我渴望成为一名出色的Web开发人员：）

I want to work on some 'practice' projects that is capable of storing/retrieving images or any type of file(.doc,.xcl,.txt, etc.). 我想从事一些“实践”项目，这些项目能够存储/检索图像或任何类型的文件（.doc，.xcl，.txt等）。 Some are saying that it's better to store img/any file in a file system as opposed to saving it inside the database. 有人说将img /任何文件存储在文件系统中比将其保存在数据库中更好。

I would like to know the pros and cons of both side. 我想知道双方的利弊。

I would also like to know what's the best data type for storing imgs/files in MySQL (I'm currently using longblob for PHP-MySQL) For saving imgs 我还想知道在MySQL中存储imgs /文件的最佳数据类型是什么（我目前在PHP-MySQL中使用longblob）来保存imgs

I would also like to know what's the best data type for storing imgs/files in SQL Server (I'm currently using Asp.net Varbinary(max) for SQL Server 2008) For saving imgs 我还想知道在SQL Server中存储imgs /文件的最佳数据类型是什么（我目前在SQL Server 2008中使用Asp.net Varbinary（max）） 用于保存imgs

Lastly,I'm just curious on how websites like facebook and other big web applications store imgs and files. 最后，我很好奇Facebook和其他大型网络应用程序之类的网站如何存储img和文件。

Sir/Ma'am, your answers would be of great help and be very much appreciated. 先生/女士，您的回答将为您带来很大的帮助，我们将不胜感激。 Thank you++ 谢谢++

2 个解决方案

Facebook uses haystack for images. Facebook使用干草堆拍摄图像。

Here is a link from their site describing image storage and retrieval 这是他们网站上的链接，描述了图像的存储和检索

http://www.facebook.com/note.php?note_id=76191543919 http://www.facebook.com/note.php?note_id=76191543919

Based on prior experience, I would recommend not storing files directly into a SQL database. 根据以前的经验，我建议不要将文件直接存储到SQL数据库中。

Pros: Storing in database 优点：存储在数据库中

Files are saved "forever" 文件“永久保存”
Can restrict access to the real file more easily 可以更轻松地限制对真实文件的访问
You can, technically, check for duplicate files. 从技术上讲，您可以检查重复的文件。
You are not keeping the files on drive, so it can be faster to access for the server 您没有将文件保留在驱动器上，因此可以更快地访问服务器
Less files on your server is considered "better" and more organized 服务器上的文件更少被认为是“更好”的文件，井井有条
"one file for everything" “一应俱全”

Cons: 缺点：

If site is up but database is not, file will be invalid (through "direct" linking) 如果站点已启动但数据库未启动，则文件将无效（通过“直接”链接）
Some databases that cannot be reconfigured only allow blobs to be of a certain size limit (a few mb), therefore making it so that really large images cannot be stored (but can be separated) 某些无法重新配置的数据库仅允许将blob限制在一定的大小限制（几mb），因此使其无法存储（但可以分开）非常大的图像
More data becomes stored in memory when loading file to (to a variable); 将文件加载到（到变量中）时，更多数据将存储在内存中； similar to the problem above, very large images can slow down your server. 与上述问题类似，非常大的图像会降低服务器的速度。
Some files may be of different character encoding, and thus storing and/or retrieving files may corrupt the original file. 某些文件可能具有不同的字符编码，因此存储和/或检索文件可能会损坏原始文件。 I am not sure if this is real problem, but I think it was. 我不确定这是否是真正的问题，但我认为是。