Spring Boot整合SLF4j+logback

我就是我 2021-08-28 14:48 386阅读 0赞

**一 点睛**

SLF4j作为日志门面，logback作为日志实现。

Spring Boot 默认实现的日志管理就是使用的logback。

**二 pom**

不用修改任何地方。

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
       <modelVersion>4.0.0</modelVersion>
       <parent>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-parent</artifactId>
          <version>2.2.6.RELEASE</version>
          <relativePath/> 
       </parent>
       <groupId>com.cakin</groupId>
       <artifactId>logback</artifactId>
       <version>0.0.1-SNAPSHOT</version>
       <name>logback</name>
       <description>logback Demo</description>
    
    
       <properties>
          <java.version>1.8</java.version>
       </properties>
    
    
       <dependencies>
          <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter</artifactId>
          </dependency>
    
    
          <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
             <optional>true</optional>
          </dependency>
          <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
             <exclusions>
                <exclusion>
                   <groupId>org.junit.vintage</groupId>
                   <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
             </exclusions>
          </dependency>
       </dependencies>
    
    
       <build>
          <plugins>
             <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
             </plugin>
          </plugins>
       </build>
    
    
    </project>

**三 配置文件**

1 路径

src/main/resources/logback-spring.xml

2 内容

<?xml version="1.0" encoding="utf-8" ?>
    <configuration>
    
    
        <appender name="consoleLog" class="ch.qos.logback.core.ConsoleAppender">
            <layout class="ch.qos.logback.classic.PatternLayout">
                <pattern>
                    %date{yyyy-MM-dd HH:mm:ss.SSS} %-5level[%thread]%logger{56}.%method:%L -%msg%n
                </pattern>
            </layout>
        </appender>
    
    
        <appender name="fileInfoLog" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                
                <level>ERROR</level>
                
                <onMatch>DENY</onMatch>
                
                <onMismatch>ACCEPT</onMismatch>
            </filter>
            <encoder>
                <pattern>%d -- %msg%n</pattern>
            </encoder>
            
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                
                <fileNamePattern>e:/info-%d.log</fileNamePattern>
            </rollingPolicy>
        </appender>
    
    
        
        <appender name="fileErrorLog" class="ch.qos.logback.core.rolling.RollingFileAppender">
            
            <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
                <level>ERROR</level>
            </filter>
            
            <encoder>
                <pattern>%d -- %msg%n</pattern>
            </encoder>
            
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                <fileNamePattern>e:/error-%d.log</fileNamePattern>
            </rollingPolicy>
        </appender>
    
    
        
        <root level="info">
            <appender-ref ref="consoleLog" />
            <appender-ref ref="fileInfoLog"/>
            <appender-ref ref="fileErrorLog"/>
        </root>
    </configuration>

**四 测试**

1 main文件测试

package com.cakin.logback;
    
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    @SpringBootApplication
    @Slf4j
    public class LogbackApplication {
    
    
        public static void main( String[] args ) {
            SpringApplication.run(LogbackApplication.class, args);
            log.debug("sl4j.debug in main");
            log.info("sl4j.info in main");
            log.error("sl4j.error in main");
        }
    }

打印内容：

2020-04-22 19:44:57.206 INFO [main]com.cakin.logback.LogbackApplication.main:14 -sl4j.info in main
    2020-04-22 19:44:57.209 ERROR[main]com.cakin.logback.LogbackApplication.main:15 -sl4j.error in main

2 test文件测试

package com.cakin.logback;
    
    
    import lombok.extern.slf4j.Slf4j;
    import org.junit.jupiter.api.Test;
    import org.springframework.boot.test.context.SpringBootTest;
    
    
    @SpringBootTest
    @Slf4j
    class LogbackApplicationTests {
    
    
       @Test
       void contextLoads() {
       }
    
       @Test
       public void testSl4j(){
          log.debug("sl4j.debug...");
          log.info("sl4j.info");
          log.error("sl4j.error");
       }
    }

打印内容：

2020-04-22 19:44:10.084 INFO [main]com.cakin.logback.LogbackApplicationTests.testSl4j:18 -sl4j.info
    2020-04-22 19:44:10.084 ERROR[main]com.cakin.logback.LogbackApplicationTests.testSl4j:19 -sl4j.error

**五 参考**

[https://blog.csdn.net/duguxiaobiao/article/details/78988409][https_blog.csdn.net_duguxiaobiao_article_details_78988409]

[https://blog.csdn.net/sxdtzhaoxinguo/article/details/78458659][https_blog.csdn.net_sxdtzhaoxinguo_article_details_78458659]

[https_blog.csdn.net_duguxiaobiao_article_details_78988409]: https://blog.csdn.net/duguxiaobiao/article/details/78988409
[https_blog.csdn.net_sxdtzhaoxinguo_article_details_78458659]: https://blog.csdn.net/sxdtzhaoxinguo/article/details/78458659