![]() ![]() Leads to two issues, one of omission and one of substitution: Conforming a URL to use this set of characters generally When building a valid URL, you must ensure that it contains only those characters shown in the Text strings, scheme usage ( http), port ( 8080), etc. This table summarizes these characters: Summary of Valid URL Characters Set Must contain only a special subset of ASCII characters: the familiarĪlphanumeric symbols, and some reserved characters for use as controlĬharacters within URLs. We need to translate special characters becauseĪll URLs need to conform to the syntax specified by the To translate those characters before sending them out to a web server. Might treat URLs with UTF-8 characters as "valid", but would also need Those characters into a different encoding before transmission.īy the same token, any code that generates or accepts UTF-8 input "上海+中國") the browser needs to internally translate A URL entered within an address bar in aīrowser, for example, may contain special characters (e.g. You may think that a "valid" URL is self-evident, but It is recommended you use your platform's normal URL building libraries toĪutomatically encode your URLs, to ensure the URLs are properly escaped for your A comma in a string should be encoded as %2C. If you use a pipe character ( |) as a separator, be sure Rather than applying percent encoding for all such characters.įor example, spaces in a string are either encoded with %20 or replaced with To deal with this problem, while HTML forms make some additional substitutions Some characters cannot be part of a URL (for example, the space) and some otherĬharacters have a special meaning in a URL.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |