我試圖在Log4J2中實現和配置自定義篩選器 - 基於ThresholdFilter,但打算做更多。我已經看到了自定義appender上的主題,它們遵循相同的插件註釋語法,但尚未在自定義裝配器上找到主題。Log4j2自定義篩選器
MyCustomFilter.java(基於ThresholdFilter)
@Plugin(name = "MyCustomFilter", category = Node.CATEGORY, elementType = Filter.ELEMENT_TYPE, printObject = true)
public class MyCustomFilter extends AbstractFilter {
private static final long serialVersionUID = 1L;
private final Level level;
private MyCustomFilter(final Level level, final Result onMatch, final Result onMismatch) {
super(onMatch, onMismatch);
this.level = level;
}
@Override
public Result filter(final Logger logger, final Level level, final Marker marker, final String msg, final Object... params) {
return filter(level);
}
@Override
public Result filter(final Logger logger, final Level level, final Marker marker, final Object msg, final Throwable t) {
return filter(level);
}
@Override
public Result filter(final Logger logger, final Level level, final Marker marker, final Message msg, final Throwable t) {
return filter(level);
}
@Override
public Result filter(final LogEvent event) {
return filter(event.getLevel());
}
private Result filter(final Level level) {
return level.isMoreSpecificThan(this.level) ? onMatch : onMismatch;
}
@Override
public String toString() {
return level.toString();
}
/**
* Create a MyCustomFilter.
*
* @param level
* The log Level.
* @param match
* The action to take on a match.
* @param mismatch
* The action to take on a mismatch.
* @return The created MyCustomFilter.
*/
@PluginFactory
public static MyCustomFilter createFilter(@PluginAttribute("level") final Level level, @PluginAttribute("onMatch") final Result match,
@PluginAttribute("onMismatch") final Result mismatch) {
final Level actualLevel = level == null ? Level.ERROR : level;
final Result onMatch = match == null ? Result.NEUTRAL : match;
final Result onMismatch = mismatch == null ? Result.DENY : mismatch;
return new MyCustomFilter(actualLevel, onMatch, onMismatch);
}
}
log4j2.xml
<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
<MyCustomFilter level="fatal" />
<Appenders>
<Console name="STDOUT" target="SYSTEM_OUT">
<PatternLayout pattern="%d %-5p [%c{5}.%M():%L] %m%n" />
</Console>
</Appenders>
<Loggers>
<Logger name="com.me.test.logger" level="info" additivity="false">
<AppenderRef ref="STDOUT" />
</Logger>
<!-- Root Logger -->
<Root level="warn">
<AppenderRef ref="STDOUT" />
</Root>
</Loggers>
</Configuration>
LoggingRunner.java
public class LoggingRunner {
public static void main(String[] args) {
Logger logger = LogManager.getLogger("com.me.test.logger");
logger.fatal("Fatal");
logger.error("Error");
logger.debug("Debug");
logger.info("Info");
System.out.println("end it");
}
}
配置語法似乎與Apache文檔中的配置語法相匹配,並模仿ThresholdFilter(一個可用的過濾器)。如果按照圖示放置它,作爲上下文級別篩選器,我沒有看到任何錯誤,但未調用或應用篩選器。
如果我將我的自定義過濾器標籤的追加程序(這是可能與外的現成的過濾器裏面,我得到2015-03-24 16:20:11,713 ERROR AppenderRef contains an invalid element or attribute "MyCustomFilter"
。
基於Apache Log4J2 documentation並在log42j芯源的例子,我認爲這會工作。
我在做什麼錯?
關閉未來讀者的循環。似乎添加packages屬性確實有助於PluginManager找到我的過濾器。 – WiSparky82 2015-03-25 14:04:33