在非Maven Java项目中实现slf4j和logback

Question

当涉及到在web应用程序中实现日志时，SLF4J + Logback似乎是一个明智的选择。然而，在谷歌上搜索如何实现它之后，我可以看到它主要用于Maven项目中，并且需要一个pom.xml文件。我的是一个非Maven项目，没有pom.xml文件。我仍然可以实现SLF4J +登录日志吗?如何实现？

Answer 1

Maven只管理依赖项、编译等。您仍然可以使用slf4j和logback，但您必须手动(除非使用其他构建工具，如ant或sbt)指定类路径，以便在编译和运行时通过-cp包含相关的jars。

Answer 2

正确的说，这个组合也可以用在非maven java项目中。

Pl将下面的jars和logback.xml放在类路径中：

• logback-access-1.0.2.jar
• logback-classic-1.0.2.jar
• logback-core-1.0.2.jar
• slf4j-api-1.6.4.jar

我的logback.xml中的示例XML

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


    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>%d %5p [%file:%line]  - %m%n</pattern>
        </layout>
    </appender>

    <logger name="org.uamlog">
        <level value="INFO"/>
    </logger>
    <logger name="org.uamlog">
        <level value="WARN"/>
    </logger>
    <logger name="org.uamlog">
        <level value="ERROR"/>
    </logger>
    <logger name="org.uamlog">
        <level value="DEBUG"/>
    </logger>
    <logger name="org.uamlog">
        <level value="TRACE"/>
    </logger>
    <root>
        <level value="WARN"/>

        <appender-ref ref="CONSOLE"/>
    </root>
    <root>
        <level value="INFO"/>

        <appender-ref ref="CONSOLE"/>
    </root>
    <root>
        <level value="DEBUG"/>

        <appender-ref ref="CONSOLE"/>
    </root>
    <root>
        <level value="TRACE"/>

        <appender-ref ref="CONSOLE"/>
    </root>
</configuration>

我用Java编写的logback测试代码：

package checklogback;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class TestLog {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Logger logger = LoggerFactory.getLogger("myLogger");
        logger.debug("My first comment using logback !!!"); 

    }

}

输出：

#logback.classic pattern: %d %5p [%file:%line]  - %m%n
21:22:39,905 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
21:22:39,905 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
21:22:39,906 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at
21:22:40,533 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
21:22:41,009 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
21:22:41,029 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [CONSOLE]
21:22:41,594 |-WARN in ch.qos.logback.core.ConsoleAppender[CONSOLE] - This appender no longer admits a layout as a sub-component, set an encoder instead.
21:22:41,594 |-WARN in ch.qos.logback.core.ConsoleAppender[CONSOLE] - To ensure compatibility, wrapping your layout in LayoutWrappingEncoder.
21:22:41,594 |-WARN in ch.qos.logback.core.ConsoleAppender[CONSOLE] - See also http://logback.qos.ch/codes.html#layoutInsteadOfEncoder for details
21:22:41,596 |-INFO in ch.qos.logback.classic.joran.action.LevelAction - org.uamlog level set to INFO
21:22:41,596 |-INFO in ch.qos.logback.classic.joran.action.LevelAction - org.uamlog level set to WARN
21:22:41,596 |-INFO in ch.qos.logback.classic.joran.action.LevelAction - org.uamlog level set to ERROR
21:22:41,597 |-INFO in ch.qos.logback.classic.joran.action.LevelAction - org.uamlog level set to DEBUG
21:22:41,597 |-INFO in ch.qos.logback.classic.joran.action.LevelAction - org.uamlog level set to TRACE
21:22:41,597 |-INFO in ch.qos.logback.classic.joran.action.LevelAction - ROOT level set to WARN
21:22:41,597 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [CONSOLE] to Logger[ROOT]
21:22:41,598 |-INFO in ch.qos.logback.classic.joran.action.LevelAction - ROOT level set to INFO
21:22:41,598 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [CONSOLE] to Logger[ROOT]
21:22:41,598 |-INFO in ch.qos.logback.classic.joran.action.LevelAction - ROOT level set to DEBUG
21:22:41,598 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [CONSOLE] to Logger[ROOT]
21:22:41,598 |-INFO in ch.qos.logback.classic.joran.action.LevelAction - ROOT level set to TRACE
21:22:41,599 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [CONSOLE] to Logger[ROOT]
21:22:41,599 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
21:22:41,620 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@2fcac6db - Registering current configuration as safe fallback point

2015-02-03 21:22:41,703 DEBUG [TestLog.java:11]  - My first comment using logback !!!

希望这能帮到你。干杯!