使用标记的 logstash-logback-encoder 错误

Question

我在使用 slf4j.Marker 时得到 java.lang.IncompatibleClassChangeError。看来我在类路径中有几个 slf4j 版本。但是当执行 maven dependency:tree 它说只有 slf4j 1.7.25。你们有什么想法可能是什么问题吗？依赖关系如下：

登录 1.2.3
slf4j 1.7.25
logstash-logback-编码器 5.0

应用部署在WildFlly 8.2.1 AS上。

> -ERROR in net.logstash.logback.appender.LogstashTcpSocketAppender[stash] - Unable to process event: Class net.logstash.logback.marker.ObjectAppendingMarker does not implement the requested interface org.slf4j.Marker java.lang.IncompatibleClassChangeError: Class net.logstash.logback.marker.ObjectAppendingMarker does not implement the requested interface org.slf4j.Marker
> 
> 2018-03-31 00:17:03,287 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)  at java.lang.IncompatibleClassChangeError: Class net.logstash.logback.marker.ObjectAppendingMarker does not implement the requested interface org.slf4j.Marker
> 
> 2018-03-31 00:17:03,287 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)  at  at net.logstash.logback.composite.loggingevent.JsonMessageJsonProvider.writeTo(JsonMessageJsonProvider.java:52)
> 
> 2018-03-31 00:17:03,287 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)  at  at net.logstash.logback.composite.loggingevent.JsonMessageJsonProvider.writeTo(JsonMessageJsonProvider.java:31)
> 
> 2018-03-31 00:17:03,287 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)  at  at net.logstash.logback.composite.JsonProviders.writeTo(JsonProviders.java:77)
> 
> 2018-03-31 00:17:03,287 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)  at  at net.logstash.logback.composite.CompositeJsonFormatter.writeEventToGenerator(CompositeJsonFormatter.java:175)
> 
> 2018-03-31 00:17:03,288 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)  at  at net.logstash.logback.composite.CompositeJsonFormatter.writeEventToOutputStream(CompositeJsonFormatter.java:152)
> 
> 2018-03-31 00:17:03,288 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)  at  at net.logstash.logback.encoder.CompositeJsonEncoder.encode(CompositeJsonEncoder.java:114)
> 
> 2018-03-31 00:17:03,288 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)  at  at net.logstash.logback.encoder.CompositeJsonEncoder.encode(CompositeJsonEncoder.java:32)
> 
> 2018-03-31 00:17:03,288 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)  at  at net.logstash.logback.appender.AbstractLogstashTcpSocketAppender$TcpSendingEventHandler.onEvent(AbstractLogstashTcpSocketAppender.java:454)
> 
> 2018-03-31 00:17:03,288 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)  at  at net.logstash.logback.appender.AbstractLogstashTcpSocketAppender$TcpSendingEventHandler.onEvent(AbstractLogstashTcpSocketAppender.java:264)
> 
> 2018-03-31 00:17:03,288 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)  at  at net.logstash.logback.appender.AsyncDisruptorAppender$EventClearingEventHandler.onEvent(AsyncDisruptorAppender.java:330)
> 
> 2018-03-31 00:17:03,288 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)  at  at net.logstash.logback.appender.AsyncDisruptorAppender$EventClearingEventHandler.onEvent(AsyncDisruptorAppender.java:318)
> 
> 2018-03-31 00:17:03,288 INFO  [stdout] (logback-appender-stash-127.0.0.1:4560-2)

Answer 1

你是对的，这个问题的发生是因为类路径中有几个 slf4j 版本

现在我们需要找出它是如何发生的

案例 1：

当我查看 logback 1.2.3 的 Maven 存储库时，我发现它已经依赖于 slf4j。

所以当你加载logback 1.2.3时，slf4j会自动添加

所以你不需要在 pom 中添加额外的 slf4j，如果你这样做请删除它。

参考 link 了解更多详情 - 编译依赖关系：

案例 2：

调查wildfly/modules/system/layers/base/org/slf4j

文件夹查看是否有任何slf4j jar 已经添加到其中。如果是这样，您只需要在编译时使用 slf4j

添加<scope>compile</scope>

使用标记的 logstash-logback-encoder 错误

logstash-logback-encoder error using Markers

java

logging

logback

wildfly

logstash-logback-encoder