使用 SLF4J 发送/重定向/路由 java.util.logging.Logger (JUL) 到 Logback? [英] Send/redirect/route java.util.logging.Logger (JUL) to Logback using SLF4J?

问题描述

是否可以对 java.util.logging.Logger 进行典型调用并使用 SLF4J 将其路由到 Logback?这会很好，因为我不必逐行重构旧的 jul 代码.

Is it possible to have a typical call to java.util.logging.Logger and have it route to Logback using SLF4J? This would be nice since I wouldn't have to refactor the old jul code line by line.

EG，假设我们有这条线:

EG, say we have this line:

private static Logger logger = Logger.getLogger(MahClass.class.getName());
//...
logger.info("blah blah blah");

最好将其配置为通过 SLF4J 调用.

It would be nice to configure this to call through SLF4J.

推荐答案

这很容易，不再是性能问题.

It's very easy and not a performance issue anymore.

SLF4J 手册中记录了两种方法.Javadocs

将 jul-to-slf4j.jar 添加到您的类路径中.或者通过 maven 依赖:

Add jul-to-slf4j.jar to your classpath. Or through maven dependency:

<dependency>
    <groupId>org.slf4j</groupId>
     <artifactId>jul-to-slf4j</artifactId>
    <version>1.7.0</version>
</dependency>

如果您没有 logging.properties(用于 java.util.logging)，请将其添加到您的引导程序代码中:

If you don't have logging.properties (for java.util.logging), add this to your bootstrap code:

SLF4JBridgeHandler.removeHandlersForRootLogger();
SLF4JBridgeHandler.install();

如果您有 logging.properties(并想保留它)，请将其添加到其中:

If you have logging.properties (and want to keep it), add this to it:

handlers = org.slf4j.bridge.SLF4JBridgeHandler

为了避免性能损失，将此 contextListener 添加到 logback.xml(从 logback 版本 0.9.25 开始):

In order to avoid performance penalty, add this contextListener to logback.xml (as of logback version 0.9.25):

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

    <contextListener class="ch.qos.logback.classic.jul.LevelChangePropagator">
        <!-- reset all previous level configurations of all j.u.l. loggers -->
        <resetJUL>true</resetJUL>
    </contextListener> 

    ...

</configuration>

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