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  1. XWiki Platform
  2. XWIKI-16559

Illegal XStream reflective access warning when starting XWiki on Java 11+

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Minor
    • Resolution: Duplicate
    • Affects Version/s: 11.3, 11.4, 11.5
    • Fix Version/s: None
    • Component/s: None
    • Labels:
    • Environment:
      Windows 10 Pro 64 bit, IE11, using a local instance of XWiki 11.5, on MySQL 5.7 and HSQL 2.5.0 (tested on JAVA 11)
    • Difficulty:
      Unknown
    • Documentation:
      N/A
    • Documentation in Release Notes:
      N/A
    • Similar issues:

      Description

      Preconditions: Have Java 11.0.3 installed and running.

      When starting a local instance of XWiki 11.5, some warnings are displayed in console:

      WARNING: An illegal reflective access operation has occurred
      WARNING: Illegal reflective access by com.thoughtworks.xstream.core.util.Fields (file:/C:/ILIE%20LUCRU/XWIKI%2011.4/xwiki-platform-distribution-flavor-jetty-hsqldb-11.4%20STD%20JAVA%208/webapps/xwiki/WEB-INF/lib/xstream-1.4.11.1.jar) to field java.util.TreeMap.comparator
      WARNING: Please consider reporting this to the maintainers of com.thoughtworks.xstream.core.util.Fields
      WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
      WARNING: All illegal access operations will be denied in a future release
      

      The warnings are not recorded in the log.

      I've tested and reproduced the issue also on XWiki 11.4 and 11.3.

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              Assignee:
              vmassol Vincent Massol
              Reporter:
              iandriuta Ilie Andriuta
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                Updated:
                Resolved:
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