[英]Delphi code for sanitizing a URL entered by the user
I need a user to be able to enter a URL, and would like to make sure it is as wholesome as possible. 我需要用户能够输入URL,并希望确保它尽可能健康。 Things like checking that there is http:// at the front, no double-dots, perhaps valid TLD, trailing slash (I have to add the final page). 比如检查前面有http://,没有双点,也许是有效的TLD,尾随斜线(我必须添加最后一页)。
I figure this is such a common requirement that it must exist already. 我认为这是一个必须存在的常见要求。 Suggestions? 建议?
[edit:] To be clear, this is a run-time requirement in a Windows Service. [编辑:]为了清楚起见,这是Windows服务中的运行时要求。 The aim is to get the best from the URL read from the configuration, rather than validate what the user typed in. In essence, if I can adjust the URL and make it work, then that is what I'd like to do. 目的是从配置中读取的URL中获得最佳效果,而不是验证用户输入的内容。实质上,如果我可以调整URL并使其工作,那么这就是我想要做的。 The download will be a specific file, so if it all goes wrong it won't get the wrong thing from another server by mistake. 下载将是一个特定的文件,所以如果一切都出错,它将不会错误地从另一台服务器得到错误的东西。
Have you had a look at " What is the best regular expression to check if a string is a valid URL "? 您是否看过“ 检查字符串是否为有效URL的最佳正则表达式是什么 ”? It is not Delphi specific, but might get you started. 它不是Delphi特有的,但可能会让你入门。
也许这里的一些建议可能会有所帮助。
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