EMF2DOMAdapterImpl_ERROR_0 Websphere Application Server WAS (V8.5) DeploymentDescriptorLoadException: WEB-INF/web.xml

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Websphere Application Server V 8.5 fails to startup with certain web.xml structure.

Current DOCTYPE uses http://java.sun.com/dtd/web-app_2_3.dtd .

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Venkata Ramana On BEST ANSWER

This error mainly occurs when there is a problem with the web.xml deployment descriptor. This problem is caused because of invalid tag in the web.xml which can be due to multiple different things such as:

There should be no duplicate tages for

  • session-config
  • welcome-file-list
  • jsp-config
  • login-config
  • locale-encoding-mapping-list

Web.xml is not supposed to have multiple url-pattern under one servlet-mapping tag in deployment descriptor. If you have around 3 - 4 url-patterns under one servlet-mapping, move this to multiple servlet mapping containing one url-patterns.

For more debug information you can check the logs in AppServer\profiles\AppSrv01\logs\server1\SystemErr