Wednesday, 22 January 2014

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Webxml Attribute Is Required Error in Maven

Servlet 3.0 API has many nice features in it . One of the most important feature of this release is ease of development . Now you don't have to write configurations related things in web.xml , you can write all these things by using annotations . So , from servlet 3.0 , web.xml is optional (however , if web.xml is present , it will be given preference over annotations ) . If you are using maven for packaging your war , you might get following error if you don't have web.xml in your application .

 Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.1.1:war (default-war) on project webSocketExample: Error assembling WAR: webxml attribute is required (or pre-existing WEB-INF/web.xml if executing in update mode) -> [Help 1]

You can resolve this error by adding following lines in your pom.xml