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Access build number from MANIFEST

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How to access the build number in the WAR file (generated by the Maven build number plugin) from Java.

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  1. String appServerHome = getServletContext().getRealPath("/");
  2.  
  3. File manifestFile = new File(appServerHome, "META-INF/MANIFEST.MF");
  4.  
  5. Manifest mf = new Manifest();
  6. mf.read(new FileInputStream(manifestFile));
  7.  
  8. Attributes atts = mf.getMainAttributes();
  9.  
  10. System.out.println("Version: " + atts.getValue("Implementation-Version"));
  11. System.out.println("Build: " + atts.getValue("Implementation-Build"));

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