春季:日志无法与log4j或logback一起使用 [英] Spring : Logging not working with log4j or logback

问题描述

我正在开发一个Spring-MVC应用程序，在该应用程序中我试图再次使日志记录正常工作.不幸的是，有时它刚刚停止工作，我不知道是什么原因造成的.我在网上尝试了一些建议，但没有任何用处.有什么建议吗?

I am working on a Spring-MVC application in which I am trying to get logging working again. Unfortunately, sometime back it just stopped working, I don't know what is causing that. I tried some suggestions on net, but nothing useful. Any suggestions?

Pom.xml:

<packaging>war</packaging>
    <properties>
        <java-version>1.8</java-version>
        <org.springframework-version>4.1.6.RELEASE</org.springframework-version>
        <org.aspectj-version>1.7.4</org.aspectj-version>
        <org.slf4j-version>1.7.5</org.slf4j-version>
        <hibernate.version>4.3.9.Final</hibernate.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <springsecurity.version>4.0.1.RELEASE</springsecurity.version>
        <spring-platform.version>1.1.3.RELEASE</spring-platform.version>
        <jetty.version>9.2.9.v20150224</jetty.version>
    </properties>

    <parent>
        <groupId>io.spring.platform</groupId>
        <artifactId>platform-bom</artifactId>
        <version>1.1.3.RELEASE</version>
        <relativePath />
    </parent>

    <dependencies>

  <!-- Spring framework dependencies -->

        <dependency>
            <groupId>org.springframework.mobile</groupId>
            <artifactId>spring-mobile-device</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-redis</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
        </dependency>

        <!-- Spring security dependencies -->
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-taglibs</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
        </dependency>


    <!-- Logging -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.5</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>1.7.5</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.0.13</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-core</artifactId>
            <version>1.0.13</version>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>log4j</groupId>
            <artifactId>apache-log4j-extras</artifactId>
            <version>1.1</version>
        </dependency>

我同时拥有log4j.xml和logback.xml:

I have both log4j.xml and logback.xml :

log4j.xml:

log4j.xml :

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/xml/doc-files/log4j.dtd">
<log4j:configuration>


    <!-- Appenders -->
    <appender name="console" class="org.apache.log4j.ConsoleAppender">
        <param name="Target" value="System.out" />
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%-5p: %c - %m%n" />
        </layout>
    </appender>
  <logger name="org.cometd">
        <level value="debug"/>
    </logger>
    <!-- Root Logger -->
    <root>
        <priority value="OFF" />
        <appender-ref ref="console" />
    </root>

</log4j:configuration>

logback.xml:

logback.xml :

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <include resource="org/springframework/boot/logging/logback/base.xml"/>


    <logger name="org.cometd" level="debug"/>
    <logger name="com.tooltank.spring.chat.ChatServiceImpl" level="info"/>
</configuration>

在服务器启动过程中，我得到了这个信息:

During server startup I get this :

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/home/logback-classic-1.0.13.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home//WEB-INF/lib/slf4j-log4j12-1.7.12.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
13:43:29,173 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
13:43:29,173 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
13:43:29,174 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [file:/home/path/to/logback.xml]
13:43:29,292 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
13:43:29,298 |-ERROR in ch.qos.logback.core.joran.action.IncludeAction - Could not find resource corresponding to [org/springframework/boot/logging/logback/base.xml]
SLF4J: Actual binding is of type [ch.qos.logback.classic.util.ContextSelectorStaticBinder]
13:43:29,299 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [org.cometd] to DEBUG
13:43:29,299 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [com.tooltank.spring.chat.ChatServiceImpl] to INFO
13:43:29,299 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
13:43:29,300 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@59474a9e - Registering current configuration as safe fallback point

我想念什么?谢谢你.

What am I missing? Thank you.

推荐答案

您应避免在一个应用程序中使用log4j和logback.如果您的类路径中有两个jar，则classloader会选择其中一个(随机.) 该日志语句表明了这一点:

You should avoid using log4j and logback in one application. If you have both jars in your classpath the classloader will pick either one of them (kind of random..) That is indicated by this log statement:

SLF4J: Class path contains multiple SLF4J bindings.

如果打算使用logback，则需要将logback.xml文件放置在应用程序的类路径中.来自文档:

If you intend to use logback you need to place the logback.xml file in the classpath of your application. From documentation:

如果在类路径上找到

logback，它将尝试使用logback-test.xml或logback.xml文件进行自我配置.

logback will try to configure itself using the files logback-test.xml or logback.xml if found on the class path.

您还可以查看以下链接:

You can also check out this link: https://docs.spring.io/spring-boot/docs/current/reference/html/howto-logging.html#howto-configure-logback-for-logging

我猜您还需要向控制台添加一个追加器，例如:

I guess you also need to add an appender to the console such as:

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<!-- encoders are assigned the type
     ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
<encoder>
  <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
</encoder>

，然后将追加器添加到记录器中:

and then add the appender to your logger:

<logger name="org.cometd" additivity="false">
    <level value="DEBUG" />
    <appender-ref ref="STDOUT" />
</logger>

最诚挚的问候！

这篇关于春季:日志无法与log4j或logback一起使用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IT屋！