How to set log4j log level in spring MVC web project - spring

Question

Please find below for the log4j.xml and controller class. I have added lines in log4j.xml to change the log level from error to debug. But there is no effect seen after adding these lines.
I need this setup to debug "HTTP 400: The request sent by the client was syntactically incorrect."
Could anyone help me on this? Thanks.
log4j.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration PUBLIC "-//log4j/log4j Configuration//EN" "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="Appender1" class="org.apache.log4j.ConsoleAppender">
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-7p %d [%t] %c %x - %m%n"/>
</layout>
</appender>
<appender name="Appender2" class="org.apache.log4j.FileAppender">
<param name="File" value="./Logs/SpringMVC2.log" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-7p %d [%t] %c %x - %m%n"/>
</layout>
</appender>
<!-- no effect of these lines -->
<!-- <logger name="org.springframework.web" additivity="false"> -->
<logger name="org.springframework" additivity="false">
<priority value ="DEBUG" />
<level value="DEBUG"/>
<appender-ref ref="CONSOLE"/>
</logger>
<root>
<priority value ="DEBUG" />
<level value="DEBUG"/>
<appender-ref ref="CONSOLE"/>
</root>
<!-- /no effect of these lines -->
</log4j:configuration>
Controller class
#EnableWebMvc
#Controller
#RequestMapping(value="/home")
public class HomeController {
private Logger logger= Logger.getLogger(HomeController.class);
#RequestMapping(method=RequestMethod.GET)
public String home() {
logger.info("sample info log");
logger.debug("sample debug log");
logger.trace("sample trace log");
logger.error("sample error log");
return "home";
}
}

Answer 1

You define appender with name <appender name="Appender1" class="org.apache.log4j.ConsoleAppender"> but you don't use it.
Instead of use <appender-ref ref="CONSOLE"/> use the one you define :
<logger name="org.springframework" additivity="false">
<priority value ="DEBUG" />
<level value="DEBUG"/>
<appender-ref ref="Appender1"/>
</logger>