Where should I place my Vaadin 10+ static files?

@Tazavoo 's answer has been added to the official Vaadin documentation:

Vaadin Resource Cheat sheet

I just wanted to put it here because I hope this will stay updated in the future. Please forgive me that I don't post the tables here but this answer will run over otherwise.


All paths are relative to the project root, e.g. where the pom.xml file is located in a Maven project.

JavaScript imported using @JsModule uses strict mode. Among other things, this means that global variables must be defined on the window object, window.x = ..., instead of just x = ....

Vaadin 14 with npm

Non-Spring Boot projects (war packaging)

  • CSS files
    • @CssImport("./my-styles/styles.css")[1]
    • /frontend/my-styles/styles.css
  • JavaScript and Polymer templates
    • @JsModule("./src/my-script.js")[1]
    • /frontend/src/my-script.js
  • Static files, e.g. images
    • new Image("img/flower.jpg", "A flower")
    • /src/main/webapp/img/flower.jpg

Spring Boot projects (jar packaging)

  • CSS files
    • @CssImport("./my-styles/styles.css")[1]
    • /frontend/my-styles/styles.css
  • JavaScript and Polymer templates
    • @JsModule("./src/my-script.js")[1]
    • /frontend/src/my-script.js
  • Static files, e.g. images
    • new Image("img/flower.jpg", "A flower")
    • /src/main/resources/META-INF/resources/img/flower.jpg

Add-ons (jar packaging)

  • CSS files
    • @CssImport("./my-styles/styles.css")[1]
    • /src/main/resources/META-INF/resources/frontend/my-styles/styles.css
  • JavaScript and Polymer templates
    • @JsModule("./src/my-script.js")[1]
    • /src/main/resources/META-INF/resources/frontend/src/my-script.js
  • Static files, e.g. images
    • new Image("img/flower.jpg", "A flower")
    • /src/main/resources/META-INF/resources/img/flower.jpg

Vaadin 10-13, Vaadin 14 in compatibility mode

Non-Spring Boot projects (war packaging)

  • CSS files
    • @StyleSheet("css/styles.css")[2]
    • /src/main/webapp/frontend/css/styles.css
  • Polymer templates, custom-style and dom-module styles
    • @HtmlImport("src/template.html")
    • /src/main/webapp/frontend/src/template.html
  • JavaScript
    • @JavaScript("js/script.js")[3]
    • /src/main/webapp/frontend/js/script.js
  • Static files, e.g. images
    • new Image("img/flower.jpg", "A flower")
    • /src/main/webapp/img/flower.jpg

Spring Boot projects and add-ons (jar packaging)

  • CSS files
    • @StyleSheet("css/styles.css")[2]
    • /src/main/resources/META-INF/resources/frontend/css/styles.css
  • Polymer templates, custom-style and dom-module styles
    • @HtmlImport("src/template.html")
    • /src/main/resources/META-INF/resources/frontend/src/template.html
  • JavaScript
    • @JavaScript("js/script.js")[3]
    • /src/main/resources/META-INF/resources/frontend/js/script.js
  • Static files, e.g. images
    • new Image("img/flower.jpg", "A flower")
    • /src/main/resources/META-INF/resources/img/flower.jpg

Footnotes

[1] The @JsModule and @CssImport annotations can also be used for importing from an npm package. In this case, the path is defined as @JsModule("@polymer/paper-input") or @CssImport("some-package/style.css"). Paths referring to the local frontend directory should be prefixed with ./

[2] The @StyleSheet annotation can also be used in Vaadin 14 with npm. The same paths as in V10-V13 can be used, including the context:// protocol @StyleSheet("context://style.css"), which resolves the path relative to the context path of the web application, like other static files. Styles included this way may cause issues with web components.

[3] The @JavaScript annotation can also be used in Vaadin 14 with npm. The V14 /frontend folder should then be used,.

Tags:

Spring

Stylesheet

Vaadin

Polymer

Vaadin Flow

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