使用log4j2避免重复记录唯一ID的方法是通过配置log4j2的过滤器来实现。具体步骤如下:
<Configuration>
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
<Filters>
<DuplicateIdFilter/>
</Filters>
</Console>
</Appenders>
<Loggers>
<Root level="info">
<AppenderRef ref="Console"/>
</Root>
</Loggers>
</Configuration>
import org.apache.logging.log4j.core.Filter;
import org.apache.logging.log4j.core.LogEvent;
import import org.apache.logging.log4j.core.Logger;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.filter.AbstractFilter;
@Plugin(name = "DuplicateIdFilter", category = "Core", elementType = "filter", printObject = true)
public class DuplicateIdFilter extends AbstractFilter {
private String lastId;
@Override
public Result shouldLog(LogEvent event) {
String currentId = event.getContextData().getValue("uniqueId").toString();
if (currentId.equals(lastId)) {
return Result.DENY;
} else {
lastId = currentId;
return Result.NEUTRAL;
}
}
}
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.ThreadContext;
public class MyClass {
private static final Logger logger = LogManager.getLogger(MyClass.class);
public void doSomething() {
String uniqueId = generateUniqueId();
ThreadContext.put("uniqueId", uniqueId);
logger.info("This is a log message with unique ID: {}", uniqueId);
ThreadContext.remove("uniqueId");
}
private String generateUniqueId() {
// 生成唯一ID的逻辑
return "1234567890";
}
}
通过以上步骤,就可以使用log4j2避免重复记录唯一ID了。每次记录日志时,先判断当前日志事件的唯一ID是否与上一次记录的唯一ID相同,如果相同则拒绝记录该日志事件,否则记录该日志事件。这样可以避免重复记录相同的唯一ID。
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