Maven 2: How to package current project version in a WAR file?

Question

I am using Maven 2 to build my Java project and I am looking for a way to present the current version number of the pom.xml to the user (using a Servlet or JSP for example).

Answer 1

I solved this problem a little differently, as I had a desire to display version, svn revision, etc. on the index page of a service. I used the buildnumber-maven-plugin and the war-plugin to store the values in the manifest.

pom.xml snippet:

    org.codehaus.mojo
    buildnumber-maven-plugin
    
      
        validate
        
          create
        
      
    
  
  
    maven-war-plugin
    
      
        
          true
        
        
          ${env}
          ${buildNumber}
        
      
    
    
      
        package
        
          war
        
        
          ${env}
        
      
    
  

The JSP to pull them out was fairly trivial:

<%@ page language="java" pageEncoding="UTF-8"%>
<% 
java.util.jar.Manifest manifest = new java.util.jar.Manifest();
manifest.read(pageContext.getServletContext().getResourceAsStream("/META-INF/MANIFEST.MF"));
java.util.jar.Attributes attributes = manifest.getMainAttributes();

%>

  
    
    
  
  
    
Health Check
    
Version: <%=attributes.getValue("Implementation-Version")%>-<%=attributes.getValue("Implementation-Environment")%>
    
SVN Revision: <%=attributes.getValue("Implementation-Build")%>
  

This displayed something like:

Version: 2.0.1-SNAPSHOT-QA

SVN Revision: 932