How to escape/avoid the ampersand (&) in a JSF url
html-escape-characters, jsf, special-characters, url
Solution
You need to URL-encode it. In plain Java, that would be
String encodedValue2 = URLEncoder.encode(value2, "UTF-8");
The `&` should this way become `%26`. The charset should be the same as the server is been configured to use to decode the incoming HTTP request URI (which often defaults to ISO-8859-1 though).
The JSF `<f:param>` also does that when used in `<h:outputLink>` and `<h:link>`, however they aren't helpful in generating URLs for `window.open()`, so you'd really need to perform this in backing bean with help of `URLEncoder` or create a custom EL function. If you happen to use the JSF utility library OmniFaces, then you could use `#{of:encodeURL()}` for that.
See also:
- Java URL encoding of query string parameters
Problem
I use `window.open(url,"selectWindow","status=no,width=610,height=480,scrollbars=no")` in JSF. The url looks something like this : ``` /abcxyz.jsf?param1=value1&param2=value2 ``` which would show in the popup window like : ``` /abcxyz.jsf?param1=value1¶m2=value2 ``` The problem is, the `value2` is a string which has an `&` in it. Say, `value2 = ab&12`. How can I make sure that the `value2` is read as `ab&12` and that it doesn't break after `ab` because of the `&` symbol?