XWIKI-20836: Make XWiki execute fine on Java 17 with the standalone distribution on Windows

xwiki-platform-tools/xwiki-platform-tool-jetty/xwiki-platform-tool-jetty-resources/src/main/resources/start_xwiki_debug.bat

@@ -75,6 +75,13 @@ if "%JAVA_PATH%"=="" set JAVA_PATH=java
 REM Handle the case when JAVA_HOME is set by the user
 if not "%JAVA_HOME%" == "" set JAVA_PATH=%JAVA_HOME%\bin\java.exe
 
+REM TODO: Remove once https://jira.xwiki.org/browse/XWIKI-19034 is fixed. In summary we need this to allow the XWiki
+REM code or 3rd party code to use reflection to access private variables (setAccessible() calls).
+REM See https://tinyurl.com/tdhkn6mp
+set XWIKI_OPENS_LANG=--add-opens java.base/java.lang=ALL-UNNAMED
+set XWIKI_OPENS_UTIL=--add-opens java.base/java.util=ALL-UNNAMED
+set XWIKI_OPTS=%XWIKI_OPENS_LANG% %XWIKI_OPENS_UTIL% %XWIKI_OPTS%
+
 REM Location where XWiki stores generated data and where database files are.
 set XWIKI_DATA_DIR=${xwikiDataDir}
 set XWIKI_OPTS=%XWIKI_OPTS% -Dxwiki.data.dir="%XWIKI_DATA_DIR%"