1. tomcat, server.xml
<Valve className="ch.qos.logback.access.tomcat.LogbackValve"/>
2. my web app, web.xml
<servlet>
<servlet-name>AccessViewStatusMessages</servlet-name>
<servlet-class>ch.qos.logback.access.ViewStatusMessagesServlet</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>AccessViewStatusMessages</servlet-name>
<url-pattern>/lbAccessStatus</url-pattern>
</servlet-mapping>

3. tomcat conf, logback-access.xml
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<!-- always a good activate OnConsoleStatusListener -->
<statusListener class="ch.qos.logback.core.status.OnConsoleStatusListener" />

<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%h %l %u %user %date "%r" %s %b</pattern>
</encoder>
</appender>

<appender-ref ref="STDOUT" />
</configuration>

when i access http://localhost:8180/myapp/lbAccessStatus, log info doesn't appear but "Could not find status manager".

is there sth wrong?