log4j2

目录

• 依赖

• 配置文件

• 指定配置文件路径

• 示例

---

依赖

        <dependency>            <groupId>org.slf4j</groupId>            <artifactId>slf4j-api</artifactId>            <version>1.6.1</version>        </dependency>        <dependency>            <groupId>org.apache.logging.log4j</groupId>            <artifactId>log4j-slf4j-impl</artifactId>            <version>2.2</version>        </dependency>        <dependency>            <groupId>org.apache.logging.log4j</groupId>            <artifactId>log4j-api</artifactId>            <version>2.2</version>        </dependency>        <dependency>            <groupId>org.apache.logging.log4j</groupId>            <artifactId>log4j-core</artifactId>            <version>2.2</version>        </dependency>

配置文件

<?xml version="1.0" encoding="UTF-8"?><Configuration status="WARN"><Appenders>    <Console name="myConsole" target="SYSTEM_OUT">        <PatternLayout pattern="[%d{MM-dd HH:mm:ss,SSS\} %-5p] [%t] %C{1} - %m%n"/>      </Console>    <RollingFile name="common" fileName="/aaa/bbb/ccc/filename.log" filePattern="/aaa/bbb/ccc/filename.log.%d{yyyy-MM-dd}">        <PatternLayout>            <Pattern>[%d{MM-dd HH:mm:ss SSS\} %-5p] [%t] %C{1} - %m%n</Pattern>        </PatternLayout>        <Policies>            <TimeBasedTriggeringPolicy interval="1" modulate="true"/>        </Policies>    </RollingFile>    <RollingFile name="payment" fileName="/aaa/bbb/ccc/filename.log" filePattern="/aaa/bbb/ccc/filename.log.%d{yyyy-MM-dd}.log">        <PatternLayout>            <Pattern>[%d{MM-dd HH:mm:ss SSS\} %-5p] [%t] %C{3\} - %m%n</Pattern>        </PatternLayout>        <Policies>            <TimeBasedTriggeringPolicy interval="1" modulate="true"/>        </Policies>    </RollingFile></Appenders><Loggers>    <logger name="payment" level="INFO" additivity="false">               <AppenderRef ref="payment" />             </logger>    <Root level="info">        <AppenderRef ref="myConsole" />        <AppenderRef ref="common" />    </Root></Loggers></Configuration>

指定配置文件路径

    public static String setLogConfigFilePath(){          Logger log;        ConfigurationSource source;          String config = System.getProperty("user.dir");          String fullPath = config + "\\log4j2.xml";          System.out.println("Log4j2 fullPath = " + fullPath);          File file = new File(fullPath);          //this ConfigurationSource() could load xml dynamicly, info->debug->info test OK!!!          try {              source = new ConfigurationSource(new FileInputStream(file), file);              Configurator.initialize(null, source);              log = LogManager.getLogger("receive");            log.info("haha~~");        } catch (FileNotFoundException e) {              // TODO Auto-generated catch block              e.printStackTrace();          }          return fullPath;      }

示例

import org.apache.logging.log4j.LogManager;import org.apache.logging.log4j.Logger;public class AnotherClazz {    private static Logger log = LogManager.getLogger(AnotherClazz.class);    public static void sayHi(){        System.out.println("hi~~~");        log.info("hi~~~");    }}

log4j

配置文件

log4j.rootLogger=INFO, deallog log4j.appender.deallog=org.apache.log4j.DailyRollingFileAppenderlog4j.appender.deallog.File=/aaa/bbb/logs/post-payback-esb.loglog4j.appender.deallog.Append=truelog4j.appender.deallog.Threshold=INFOlog4j.appender.deallog.layout=org.apache.log4j.PatternLayoutlog4j.appender.deallog.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%nlog4j.additivity.esblog=falselog4j.logger.esblog=INFO,esbloglog4j.appender.esblog=org.apache.log4j.DailyRollingFileAppenderlog4j.appender.esblog.File=/aaa/bbb/logs/post_payback.esbreceive.loglog4j.appender.esblog.Append=truelog4j.appender.esblog.Threshold=INFOlog4j.appender.esblog.layout=org.apache.log4j.PatternLayoutlog4j.appender.esblog.layout.ConversionPattern=%d{ABSOLUTE} - %m%n

指定配置文件路径

    public static String setLogConfigFilePath(){          PropertyConfigurator.configure("E://log4j.properties");        Logger log = Logger.getLogger(TaskMain.class);        log.info("haha");    }