由于log4j而导致使用logback

问题描述

我在使用logback和slf4j时遇到问题，我正在编写一个简单的应用程序，该应用程序后来打包在jar中，我想使用logback在此添加日志记录

Hi i have problems with logback and slf4j, im writing simple app that later is packaging in jar and i want to add there logging using logback

我使用:

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.7</version>
    </dependency>
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>1.1.3</version>
    </dependency>
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-core</artifactId>
        <version>1.1.3</version>
    </dependency>
    <dependency>
        <groupId>org.apache.activemq</groupId>
        <artifactId>activemq-client</artifactId>
        <version>5.8.0</version>
    </dependency>

    <dependency>
        <groupId>com.mchange</groupId>
        <artifactId>c3p0</artifactId>
        <version>${c3p0.version}</version>
    </dependency>
    <dependency>
        <groupId>commons-pool</groupId>
        <artifactId>commons-pool</artifactId>
        <version>${commons.pool.version}</version>
    </dependency>
    <dependency>
        <groupId>postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <version>${postgresql.version}</version>
    </dependency>
    <dependency>
        <groupId>net.sf.ehcache</groupId>
        <artifactId>ehcache</artifactId>
        <version>${ehcache.version}</version>
    </dependency>
    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>${gson.version}</version>
    </dependency>
    <dependency>
        <groupId>redis.clients</groupId>
        <artifactId>jedis</artifactId>
        <version>${jedis.version}</version>
    </dependency>

在Main我有:

LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();
JoranConfigurator configurator = new JoranConfigurator();
configurator.setContext(loggerContext);
configurator.doConfigure(logbackFile)

它用于jar文件外部的load logback.xml配置

it used for load logback.xml configuration outside of jar file

最有趣的是，该程序正在本地计算机(Windows)上运行(读取logback.xml，创建文件，写入文件)，但是当我将其上传到远程服务器(Linux)时，我遇到了奇怪的错误

The funniest thing is that this program is working on local machine (Windows) (reading logback.xml, create file, write to file) but when i upload it to remote server (linux) i have strange error

Exception in thread "main" java.lang.ClassCastException: org.slf4j.impl.Log4jLoggerFactory cannot be cast to ch.qos.logback.classic.LoggerContext

问题是为什么他要从org.slf4j.impl中投射ch.qos.logback.classic.LoggerContext. Log4jLoggerFactory ?

the question is why he want to cast ch.qos.logback.classic.LoggerContext from org.slf4j.impl.Log4jLoggerFactory??

我在任何地方都没有log4j的库...我的意思是我在整个计算机上都没有它

I dont have anywhere any lib of log4j... i mean i dont have it on entire machine

一个附加信息:在Windows上，我有Oracle的Java，在Linux上，我有openjdk-这可能是个问题吗?

one additional info:on Windows i have Java from Oracle and on Linux i have openjdk - it can be a problem?

//=================依赖树

//=================dependency tree

[INFO] +- org.apache.activemq:activemq-client:jar:5.8.0:compile
[INFO] |  +- org.apache.geronimo.specs:geronimo-jms_1.1_spec:jar:1.1.1:compile
[INFO] |  +- org.fusesource.hawtbuf:hawtbuf:jar:1.9:compile
[INFO] |  \- org.apache.geronimo.specs:geronimo-j2ee-management_1.1_spec:jar:1.0.1:compile
[INFO] +- com.mchange:c3p0:jar:0.9.2-pre6:compile
[INFO] |  \- com.mchange:mchange-commons-java:jar:0.2.3.1:compile
[INFO] +- commons-pool:commons-pool:jar:1.6:compile
[INFO] +- postgresql:postgresql:jar:9.1-901.jdbc4:compile
[INFO] +- net.sf.ehcache:ehcache:jar:2.9.0:compile
[INFO] +- com.google.code.gson:gson:jar:2.2.4:compile
[INFO] +- redis.clients:jedis:jar:2.1.0:compile
[INFO] +- org.slf4j:slf4j-api:jar:1.7.5:compile
[INFO] +- ch.qos.logback:logback-classic:jar:1.1.3:compile
[INFO] +- ch.qos.logback:logback-core:jar:1.1.3:compile
[INFO] \- junit:junit:jar:4.11:test
[INFO]    \- org.hamcrest:hamcrest-core:jar:1.3:test

推荐答案

由于在您的项目或其他继承的项目中已经存在SLF4J的依赖关系，因此在运行时可能会发生冲突.在我的POM文件中添加排除项对我有用:

Due to an already existing dependency of SLF4J in your project or in some other inherited project, there might be conflicts during runtime. Adding an exclusion to my POM file worked for me:

    <exclusions>
        <exclusion>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
        </exclusion>
    </exclusions>

这篇关于由于log4j而导致使用logback的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！