Webjars support

This feature enable serving static content provided by webjars. It allows you to package your assets suchas javascript libraries and css as part of your uber-jar.

Installing the feature

  1.     install(Webjars) {
  2.         path = "assets" //defaults to /webjars
  3.         zone = ZoneId.of("EST") //defaults to ZoneId.systemDefault()
  4.     }

This configures the feature to serve any webjars assets on the /assets/ path. The zone argument configures the correct time zone tobe used with the Last-Modified header to support caching (only if Conditional Headers feature is also installed).

This feature is defined in the class io.ktor.Webjars in the artifact io.ktor:ktor-webjars:$ktor_version.

dependencies { implementation "io.ktor:ktor-webjars:$ktor_version"}

dependencies { implementation("io.ktor:ktor-webjars:$ktor_version")}

<project> … <dependencies> <dependency> <groupId>io.ktor</groupId> <artifactId>ktor-webjars</artifactId> <version>${ktor.version}</version> <scope>compile</scope> </dependency> </dependencies></project>

Versioning support

Webjars allow developers to change the versions of the dependencies without requiring a change on the path used to load them on your templates.

Let’s assume you have imported org.webjars:jquery:3.2.1, you can use the following html code to import it:

  1. <head>
  2.   <script src="/webjars/jquery/jquery.js"></script>
  3. </head>

You don’t need to specify a version, should you choose to update your dependencies you don’t need to modify your templates.