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What is the best way to encode URL strings such that they are rfc2396 compliant and to decode a rfc2396 compliant string such that for example %20 is replaced with a space character?
edit: URLEncoder and URLDecoder classes do not encode/decode rfc2396 compliant URLs, they encode to a MIME type of application/x-www-form-urlencoded which is used to encode HTML form parameter data.
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Decode from URL-encoded format. Simply enter your data then push the decode button. For encoded binaries (like images, documents, etc.) use the file upload form a little further down on this page. Source character set.
A space is assigned number 32, which is 20 in hexadecimal. When you see “%20,” it represents a space in an encoded URL, for example, http://www.example.com/products%20and%20services.html.
(This assumes you will not be given an incomplete URI with no scheme.) So you can test if the string contains a colon, if not, urldecode it, and if that string contains a colon, the original string was url encoded, if not, check if the strings are different and if so, urldecode again and if not, it is not a valid URI.
Use the URI class as follows:
URI uri = new URI("http", "//www.someurl.com/has spaces in url", null);
URL url = uri.toURL();
or if you want a String:
String urlString = uri.toASCIIString();If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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