Matt RaibleMatt Raible is a Java Champion and Developer Advocate at Okta. developer.okta.com

The Angular Mini-Book The Angular Mini-Book is a guide to getting started with Angular. You'll learn how to develop a bare-bones application, test it, and deploy it. Then you'll move on to adding Bootstrap, Angular Material, continuous integration, and authentication.

Spring Boot is a popular framework for building REST APIs. You'll learn how to integrate Angular with Spring Boot and use security best practices like HTTPS and a content security policy.

For book updates, follow @angular_book on Twitter.

The JHipster Mini-Book The JHipster Mini-Book is a guide to getting started with hip technologies today: Angular, Bootstrap, and Spring Boot. All of these frameworks are wrapped up in an easy-to-use project called JHipster.

This book shows you how to build an app with JHipster, and guides you through the plethora of tools, techniques and options you can use. Furthermore, it explains the UI and API building blocks so you understand the underpinnings of your great application.

For book updates, follow @jhipster-book on Twitter.

10+ YEARS


Over 10 years ago, I wrote my first blog post. Since then, I've authored books, had kids, traveled the world, found Trish and blogged about it all.

Extensionless URLs with Java Web Frameworks

Last week, I had a go of making a Spring MVC application use extensionless URLs. I did some googling, found some tips on the Spring Forums and believe I arrived at a solid solution. Using the UrlRewriteFilter (version 3), I was able to create a rule that looks for any URLs without an extension. If it finds one, it appends the extension and forwards to the controllers. This rule is as follows (where *.html is my servlet-mapping for DispatcherServlet in web.xml):

  <rule>
    <from>^([^?]*)/([^?/\.]+)(\?.*)?$</from>
    <to last="true">$1/$2.html$3</to>
  </rule>

As long as I hand-write all my URLs without an extension (<a href="home"> vs. <a href="home.html">), this seems to work. To combat developers that use "home.html", one solution is to require all links to be wrapped with <c:url value="url"/> (or some other macro that call response.encodeURL()). If you can convince everyone to do this, you can write an outbound-rule that strips the .html extension from URLs.

  <outbound-rule>
    <from>^(.*)\.html(\?.*)?$</from>
    <to last="false">$1$2</to>
  </outbound-rule>

In an ideal world, it'd be possible to modify the <a> tag at the very core of the view framework you're using to automatically encode the URL of any "href" attributes. I don't think this is possible with JSP, FreeMarker, Facelets or any other Java Web Framework templates (i.e. Tapestry or Wicket). If it is, please let me know.

Below is my final urlrewrite.xml with these rules, as well as my "welcome-file" rule at the top.

<?xml version="1.0" encoding="utf-8"?>
<!DOCENGINE urlrewrite PUBLIC "-//tuckey.org//DTD UrlRewrite 3.0//EN"
  "http://tuckey.org/res/dtds/urlrewrite3.0.dtd">

<urlrewrite>
  <rule>
    <from>/$</from>
    <to type="forward">home</to>
  </rule>

  <rule>
    <from>^([^?]*)/([^?/\.]+)(\?.*)?$</from>
    <to last="true">$1/$2.html$3</to>
  </rule>

  <outbound-rule>
    <from>^(.*)\.html(\?.*)?$</from>
    <to last="false">$1$2</to>
  </outbound-rule>

</urlrewrite>

If you have other solutions for extensionless URLs with Java web frameworks, I'd love to hear about them. With any luck, 2008 will be the year we drop extensions (and path-mappings) from our URLs. The stat packages might not like it, but I do.

Posted in Java at May 13 2008, 09:50:51 PM MDT 18 Comments