使用logback

1.引入logstash日志格式支持

<dependency>

<groupId>net.logstash.logback</groupId>

<artifactId>logstash-logback-encoder</artifactId>

<version>4.4</version>

</dependency>

2.在 boot的配置文件application.properties指定使用logback.xml位置

logging.config=config/logback.xml

3.在logback.xml中添加用来记录logstash的appender

<appender name="LOGSTASH" class="ch.qos.logback.core.rolling.RollingFileAppender"> 

    <encoder class="net.logstash.logback.encoder.LogstashEncoder">

        <charset>utf8</charset>

    </encoder> 

    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">  

        <fileNamePattern>logstash/logstash-%d{yyyy-MM-dd}.log</fileNamePattern>  

    </rollingPolicy>  

</appender>

4.将某一个logger输入到这个appender上

<logger name="xxx" additivity="false">

   <level value="INFO" />

   <appender-ref ref="LOGSTASH" />

</logger>

 

使用log4j

1.spring boot默认使用logback记录日志，所以首先要从组件spring-boot-starter-logging中剔除logback,再引入log4j,代码如下：

<dependency>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-log4j</artifactId>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-logging</artifactId>

<exclusions>

<exclusion>

<artifactId>logback-classic</artifactId>

<groupId>ch.qos.logback</groupId>

</exclusion>

</exclusions>

</dependency>

2.添加logstash日志格式的支持：

<dependency>

<groupId>net.logstash.log4j</groupId>

<artifactId>jsonevent-layout</artifactId>

<version>1.7</version>

</dependency>

3.在spring boot的配置文件application.properties指定使用log4j作为日志组件

#指定log4j.properties的位置

logging.config=config/log4j.properties

4.log4j.properties中添加用来记录logstash的appender

log4j.logger.xxx=INFO,logstash

log4j.appender.logstash=org.apache.log4j.DailyRollingFileAppender

log4j.appender.logstash.File=logstash/logstash.log

log4j.appender.logstash.Append=true

log4j.appender.logstash.Encoding=UTF-8

log4j.appender.logstash.layout=net.logstash.log4j.JSONEventLayoutV1