Frank Steinmann created LOG4J2-409:
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Summary: Specifying log4jConfiguration in web.xml fails on Windows
when using ${user.home}
Key: LOG4J2-409
URL: https://issues.apache.org/jira/browse/LOG4J2-409
Project: Log4j 2
Issue Type: Bug
Affects Versions: 2.0-beta8
Environment: Windows 7, Apache Tomcat 7, Java 7
Reporter: Frank Steinmann
Priority: Minor
When specifying the context parameter log4jConfiguration in the web.xml of a
web application and using $\{user.home\} as part of the path, e.g.
{code:xml}
<context-param>
<param-name>log4jConfiguration</param-name>
<param-value>file://${user.home}/someDirectory/log4j2.xml</param-value>
</context-param>
{code}
the following exception is thrown on Windows systems:
{noformat}
java.net.URISyntaxException: Illegal character in authority at index 7:
file://C:\Users\steinman/someDirectory/log4j2.xml
at java.net.URI$Parser.fail(Unknown Source)
at java.net.URI$Parser.parseAuthority(Unknown Source)
at java.net.URI$Parser.parseHierarchical(Unknown Source)
at java.net.URI$Parser.parse(Unknown Source)
at java.net.URI.<init>(Unknown Source)
at
org.apache.logging.log4j.core.config.Configurator.initialize(Configurator.java:46)
...
{noformat}
It is because of the backslashes that are not allowed in URIs.
There is an example in the documentation using backslashes
([http://logging.apache.org/log4j/2.x/manual/webapp.html]) which will produce
the same exception.
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