我知道使用slf4j和log4j2作为记录器实现应该很容易。
您只需要将jar添加到类路径。
我本以为我是这样做的,但我仍在努力
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
我生命中最重要的部分 pom.xml
```
org.slf4j
slf4j-api
1.7.30
org.apache.logging.log4j
log4j-slf4j18-impl
2.14.0
runtime
org.apache.logging.log4j
log4j-api
2.14.0
runtime
org.apache.logging.log4j
log4j-core
2.14.0
runtime
然后是 `.classpath` ```
<classpathentry kind="var" path="M2_REPO/org/slf4j/slf4j-api/1.7.30/slf4j-api-1.7.30.jar" sourcepath="M2_REPO/org/slf4j/slf4j-api/1.7.30/slf4j-api-1.7.30-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/apache/logging/log4j/log4j-slf4j18-impl/2.14.0/log4j-slf4j18-impl-2.14.0.jar" sourcepath="M2_REPO/org/apache/logging/log4j/log4j-slf4j18-impl/2.14.0/log4j-slf4j18-impl-2.14.0-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/apache/logging/log4j/log4j-api/2.14.0/log4j-api-2.14.0.jar" sourcepath="M2_REPO/org/apache/logging/log4j/log4j-api/2.14.0/log4j-api-2.14.0-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/apache/logging/log4j/log4j-core/2.14.0/log4j-core-2.14.0.jar" sourcepath="M2_REPO/org/apache/logging/log4j/log4j-core/2.14.0/log4j-core-2.14.0-sources.jar"/>
然后,在lib文件夹中查找
$ find ./ -name "*slf4*.jar"
./target/my-app-0.0.1-SNAPSHOT/WEB-INF/lib/log4j-slf4j18-impl-2.14.0.jar
./target/my-app-0.0.1-SNAPSHOT/WEB-INF/lib/slf4j-api-1.7.30.jar
$ find ./ -name "*log4j*.jar"
./target/my-app-0.0.1-SNAPSHOT/WEB-INF/lib/log4j-slf4j18-impl-2.14.0.jar
./target/my-app-0.0.1-SNAPSHOT/WEB-INF/lib/log4j-api-2.14.0.jar
./target/my-app-0.0.1-SNAPSHOT/WEB-INF/lib/log4j-core-2.14.0.jar
我错过了什么?
我需要添加log4j2配置xml文件吗?
但我没有得到相应的错误信息。
我正在使用
eclipse版本:2020-09(4.17.0)
apache maven 3.6.3版
以及 maven-war-plugin
```
maven-war-plugin
3.2.3
WebContent
false
1条答案
按热度按时间gc0ot86w1#
这是因为你正在使用
slf4j 1.7.*
但你用的是logj4j-slf4j18-impl
假设与slf4j 1.8(尚未发布或更改为2.0.0版本,目前为alpha版本)一起使用。你需要从到
为了使它与您在项目中使用的slf4j兼容