• Multiple WARs in single EAR

  Dec 22nd, 2011, 06:16 PM

  Hi
  We have to create an EAR file that should have two WAR files. But these two WAR files share common application libraries. The two WAR files are build and added to EAR. When this EAR is deployed, the common classes are loaded twice resulting in duplicate spring beans, spring schedulers.
  
  How can these common libraries be loaded only once? should they be removed from one WAR file? What should be the EAR structure.
  
  Thanks in adv

  Tags: None

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  Grzegorz Grzybek

  Senior Member

  • Join Date: Oct 2008
  • Posts: 434

  #2

  Dec 27th, 2011, 01:07 AM

  Hi
  
  Do these WARs contain their own libs or do they use common (e.g. ear/lib/*.jar) JARs and META-INF/MANIFEST.MF with Class-Path: entry?
  
  regards
  Grzegorz Grzybek

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  emmanuel

  Junior Member

  • Join Date: Mar 2011
  • Posts: 27

  #3

  Dec 27th, 2011, 05:11 AM

  Jus like Grzegorz Grzybek mentioned you should reconfigure your project to have both your pointing to the libraries in the EAR. That means all the libraries in the that will be needed by your 2 war file should be in the EAR lib folder and none of the jars should be in the WEB-INF/lib folder of any of the ear files.

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  Grzegorz Grzybek

  Senior Member

  • Join Date: Oct 2008
  • Posts: 434

  #4

  Dec 27th, 2011, 06:38 AM

  Here's Maven WAR Plugin configuration:
  

  Code:

  
    ear
    
      
        
          maven-war-plugin
          
            
              jar
            
            WEB-INF/lib/*.jar
            
              
                true
                lib/
              
            
          
        
      
    
  

  And Maven EAR Plugin configuration:
  

  Code:

  ear
  
  
    
      
        maven-ear-plugin
        2.6
        
          src/main/application/META-INF/application.xml
          false
          UTF-8
          lib/
          true
          
            
              g1
              a1
              web1.war
            
            
              g2
              a2
              web2.war
            
            ...
          
        
      
    
  
  
  
  
    
      g1
      a1
      war
    
    
      g2
      a2
      war
    
    ...
  
  

  happy mavening