您可以编写自己的自定义过滤器。我建议实现可能是这样的:
public class MinLevelForParticularClassFilter extends Filter {
private boolean acceptOnMatch = false;
private Level level;
private String className;
@Override
public int decide(LoggingEvent event) {
if (this.className != null && this.level != null) {
if (event.getLocationInformation().getClassName().startsWith(className)) {
// this is event for specified class
if (!event.getLevel().isGreaterOrEqual(this.level)) {
// level of event is less than specified level
return Filter.DENY;
}
}
}
if (acceptOnMatch) {
return Filter.ACCEPT;
} else {
return Filter.NEUTRAL;
}
}
public boolean isAcceptOnMatch() { return acceptOnMatch; }
public void setAcceptOnMatch(boolean acceptOnMatch) { this.acceptOnMatch = acceptOnMatch; }
public Level getLevel() { return level; }
public void setLevel(Level level) { this.level = level; }
public String getClassName() { return className; }
public void setClassName(String className) { this.className = className; }
}
请注意,如果您将“className”变量更改为“packageName”变量,则特定包过滤器的实现将相同。
XML 中的 log4j 配置(因为属性文件中的配置不支持过滤器):
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="out" class="org.apache.log4j.RollingFileAppender">
<param name="File" value="activemq.log" />
<param name="MaxFileSize" value="10240KB" />
<param name="MaxBackupIndex" value="100" />
<param name="Append" value="true" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d [%-15.15t] %-5p %-30.30c{1} - %m%n"/>
</layout>
<!-- Apply filter to appender that's destined for root logger -->
<filter class="com.foo.log4j.filters.MinLevelForParticularClassFilter">
<param name="Level" value="WARN" />
<param name="ClassName" value="org.apache.activemq.broker.TransportConnection" />
<param name="AcceptOnMatch" value="true" />
</filter>
</appender>
<appender name="tc" class="org.apache.log4j.RollingFileAppender">
<param name="File" value="tc.log" />
<param name="MaxFileSize" value="10240KB" />
<param name="MaxBackupIndex" value="100" />
<param name="Append" value="true" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d [%t] %-5p %-30.30c{1} - %m%n"/>
</layout>
</appender>
<logger name="org.apache.activemq.broker.BrokerRegistry">
<level value="INFO" />
</logger>
<logger name="org.apache.activemq.broker.TransportConnection">
<level value="DEBUG" />
<appender-ref ref="tc" />
</logger>
<root>
<priority value ="INFO" />
<appender-ref ref="out" />
</root>
</log4j:configuration>