Nothing like that is available in JSTL functions. You'll need to create your own. I'd by the way rather replace spaces by -
.
Update: to the point, you want to complete the following steps:
Lowercase the string.
string = string.toLowerCase();
Normalize all characters and get rid of all diacritical marks.
string = Normalizer.normalize(string, Form.NFD).replaceAll("\\p{InCombiningDiacriticalMarks}+", "");
Replace all remaining non-alphanumeric characters by -
and collapse when necessary.
string = string.replaceAll("[^\\p{Alnum}]+", "-");
You can wrap this in an EL function the way as described at the bottom of my answer here.
package com.example;
import java.text.Normalizer;
import java.text.Normalizer.Form;
public final class Functions {
private Functions() {}
public static String prettyURL(String string) {
return Normalizer.normalize(string.toLowerCase(), Form.NFD)
.replaceAll("\\p{InCombiningDiacriticalMarks}+", "")
.replaceAll("[^\\p{Alnum}]+", "-");
}
}
And a /WEB-INF/functions.tld
like follows:
<?xml version="1.0" encoding="UTF-8" ?>
<taglib
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-jsptaglibrary_2_1.xsd"
version="2.1">
<display-name>Custom Functions</display-name>
<tlib-version>1.0</tlib-version>
<uri>http://example.com/functions</uri>
<function>
<name>prettyURL</name>
<function-class>com.example.Functions</function-class>
<function-signature>java.lang.String prettyURL(java.lang.String)</function-signature>
</function>
</taglib>
Which you can use in JSP as follows:
<%@taglib uri="http://example.com/functions" prefix="f" %>
...
<a href="teams/${contact.id}/${f:prettyURL(contact.name)}">Permalink</a>