Hi,

 I change mysql url setting in xwiki-2.pom from
 <xwiki.db.connection.url>"jdbc:mysql://localhost/xwiki?useServerPrepStmts=false"</xwiki.db.connection.url>
to      <xwiki.db.connection.url>"jdbc:mysql://localhost/xwiki?useUnicode=true&amp;useServerPrepStmts=false"</xwiki.db.connection.url>

then build 'xwiki-web-standard' by 'mvn install -Pxe,mysql ',  get eror:

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error building POM (may not be this project's POM).


Project ID: unknown:xwiki-web-standard
POM Location: E:\dev\xwiki\svnroot\xwiki-users\xwiki-platform-web\standard\pom.xml

Reason: Cannot read project model from interpolating filter of serialized version.

I have build successfully before this modification.
Does pom file can not use the expression '&amp;' ?