SpringBoot使用logback日志【用法和说明】

1.搭建SpringBoot工程

1.1创建一个空的Maven工程

1.2 添加SpringBoot的依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.ias</groupId>
    <artifactId>logback-springboot-demo</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

1.3 创建Spring配置文件

1.4在application-dev.xml中添加配置

server:
  port: 8764
spring:
  application:
    name: logback-server
  mvc:
    servlet:
      load-on-startup: 1
logging:
  level:
    root: INFO
  path: ../logs/oil/
  config: classpath:logback-spring.xml

1.5添加logback.xml配置文件

1.6内容如下，内容也是本文的重点，有对应的注释

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="false">
    <!--定义日志文件的存储地址 勿在 LogBack 的配置中使用相对路径-->
    <property name="LOG_HOME" value="./my-logs" />
    <!-- 控制台输出 -->
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <!--设置控制台的输出级别为“ERROR”级别-->
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>ERROR</level>
        </filter>
        <!--设置控制台的日志输出格式-->
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <!--格式化输出：%d表示日期，%thread表示线程名，%-5level：级别从左显示5个字符宽度%msg：日志消息，%n是换行符-->
            <pattern>%d{yyyy-MM-dd HH} [%thread] %-5level %logger{50} - %msg  %n</pattern>
        </encoder>
    </appender>

    <!--info级别的日志文件设置-->
    <appender name="INFO_FILE"
              class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!--日志级别设置-->
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>INFO</level>
        </filter>
        <!--临时文件的保存位置及名称-->
        <File>${LOG_HOME}/my-info.log</File>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!--临时文件大小保存到一定要求后，更改文件名，成为历史日志文件-->
            <fileNamePattern>${LOG_HOME}/info-%d{yyyyMMdd}.log.%i</fileNamePattern>
            <!--保存文件的要求，达到要求后，创建新的日志文件-->
            <timeBasedFileNamingAndTriggeringPolicy
                    class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>20MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <!--控制日志信息保存格式-->
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>%d{yyyy-MM-dd HH} %-5level %logger -%msg%n</pattern>
        </layout>
    </appender>

    <!--error级别的日志文件设置-->
    <appender name="ERROR_FILE"
    class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>ERROR</level>
        </filter>
        <File>${LOG_HOME}/my-error.log</File>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_HOME}/error-%d{yyyyMMdd}.log.%i
            </fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy
            class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>20MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <!--控制日志信息保存格式-->
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>%d{yyyy-MM-dd HH} %-5level %logger -%msg%n</pattern>
        </layout>
    </appender>

    <!-- 日志输出级别 -->
    <root level="ERROR">
        <appender-ref ref="STDOUT" />
        <appender-ref ref="ERROR_FILE"/>
        <appender-ref ref="INFO_FILE"/>
    </root>
</configuration>

1.7创建启动文件主文件

package com.ias;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class LogApp {
    public static void main(String[] args) {
        SpringApplication.run(LogApp.class,args);
    }
}

1.8 添加测试文件

package com.ias.contoller;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {
    private final static Logger logger = LoggerFactory.getLogger(HelloController.class);
    @RequestMapping(value = "/index")
    public String index(){
        logger.debug("debug-test");
        logger.info("info-test");
        logger.error("error-test");
        return "index";
    }
}

1.9运行启动类，开始测试

页面请求

控制台打印