application url containing '@' throwing an exception

I have my application url which I am sending the the end user on their emails.

Now that url contains the 'username' field, which can contains '@' character.

For e.g. link which sent to the end user :

http://localhost:8080/my-app/someaction/activateuser/abc@def.com/somedata/

Now whenever user clicks on above link, its throwing following exception :

java.lang.IllegalArgumentException
    Input string 'abc@def.com' is not valid; the character '@' at position 4 is not valid.
    at org.apache.tapestry5.internal.services.URLEncoderImpl.decode(URLEncoderImpl.java:144)
    at $URLEncoder_137022607d9.decode($URLEncoder_137022607d9.java)
    at org.apache.tapestry5.internal.services.ContextPathEncoderImpl.decodePath(ContextPathEncoderImpl.java:92)
    at $ContextPathEncoder_137022607cd.decodePath($ContextPathEncoder_137022607cd.java)
    at org.apache.tapestry5.internal.services.ComponentEventLinkEncoderImpl.checkIfPage(ComponentEventLinkEncoderImpl.java:328)
    at org.apache.tapestry5.internal.services.ComponentEventLinkEncoderImpl.decodePageRenderRequest(ComponentEventLinkEncoderImpl.java:307)
    at org.apache.tapestry5.internal.services.linktransform.LinkTransformerInterceptor.decodePageRenderRequest(LinkTransformerInterceptor.java:68)
    at $ComponentEventLinkEncoder_137022607c1.decodePageRenderRequest($ComponentEventLinkEncoder_137022607c1.java)
    at org.apache.tapestry5.internal.services.PageRenderDispatcher.dispatch(PageRenderDispatcher.java:41)
    at $Dispatcher_137022607c2.dispatch($Dispatcher_137022607c2.java)
    at $Dispatcher_137022607bd.dispatch($Dispatcher_137022607bd.java)
    at org.apache.tapestry5.services.TapestryModule$RequestHandlerTerminator.service(TapestryModule.java:321)
    at org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)

Is there any way to handle such scenario, like encoding/decoding the urls ?

Solution

As MiniBill has already answered, that can't work, and as Howard has added, Tapestry has its own encoder for URLs. This means that the easiest way for you to get a URL in the format that Tapestry can read is to have Tapestry create it, and then pass it to the component that sends your emails:

@Inject
private LinkSource linkSource;

@OnEvent(...)
void sendActivationEmail() {
    final Link activationLink = this.createUserActivationLink(email, otherStuff);
    this.activationEmailSender.sendWithActivationLink(email, activationLink);
}

private Link createUserActivationLink(String email, String otherStuff) {
    return linkSource.createPageRenderLink(
       "someaction/activateuser", false, email, otherStuff);
}