I am new to Vaadin and I am trying to do some Tests with this technology. I Set up my project as a Maven Project under Eclipse with a Tomcat 7 Server.
At first I started with Vaadin 7.0.0 and everything works fine. Now I change the Version from 7.0.0 to 7.1.0 because I like to test the push functionality. With Vaadin 7.0.0 everything works fine, but since I changed the Version I get the error:
Requested resource [/VAADIN/widgetsets/com.vaadin.DefaultWidgetSet /com.vaadin.DefaultWidgetSet.nocache.js] not found from filesystem or through class loader. Add widgetset and/or theme JAR to your classpath or add files to WebContent/VAADIN folder.
I've read that the DefaultWidget is created by Vaadin but how can I do that?
Unless you add new client-side components to a Vaadin project, you don't need to compile a WidgetSet. However, the default configuration of Vaadin assumes that you have one. To get past this error simply remove the <init-param> tag for the widgetset in your web.xml.
<servlet> <servlet-name>Your-SERVLET-NAME</servlet-name> <servlet-class>com.vaadin.server.VaadinServlet</servlet-class> <init-param> <param-name>UI</param-name> <param-value>com.example.MyUI</param-value> </init-param> <init-param> <param-name>widgetset</param-name> <param-value>another.path</param-value> </init-param> </servlet>
Alternatively, you can create an .xml file in the same package (e.g. MyWSet.xml) as your UI class, and reference it in your web.xml.
MyWSet.xml in com.example package:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 1.7.0//EN" "http://google-web-toolkit.googlecode.com/svn/tags/1.7.0/distro-source/core/src/gwt-module.dtd"> <module> <inherits name="com.vaadin.DefaultWidgetSet" /> </module>
The right web.xml:
<servlet> <servlet-name>Your-SERVLET-NAME</servlet-name> <servlet-class>com.vaadin.server.VaadinServlet</servlet-class> <init-param> <param-name>UI</param-name> <param-value>com.example.MyUI</param-value> </init-param> <init-param> <param-name>widgetset</param-name> <param-value>com.example.MyWSet</param-value> </init-param> </servlet>
Remember, you don't need the .xml suffix in your web.xml. Finally, run mvn vaadin:compile to compile this widgetset.
Adding vaadin-client-compiled worked for me as mentioned in https://vaadin.com/forum/thread/2485026/2496683
<dependency> <groupId>com.vaadin</groupId> <artifactId>vaadin-client-compiled</artifactId> </dependency>
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