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此 demo 主要演示了如何使用 logback 记录程序运行过程中的日志,以及如何配置 logback,可以同时生成控制台日志和文件日志记录,文件日志以日期和大小进行拆分生成。
<?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>
<artifactId>spring-boot-demo-logback</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>spring-boot-demo-logback</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>com.xkcoding</groupId>
<artifactId>spring-boot-demo</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<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>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
</dependencies>
<build>
<finalName>spring-boot-demo-logback</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
/**
* <p>
* 启动类
* </p>
*
* @package: com.xkcoding.logback
* @description: 启动类
* @author: yangkai.shen
* @date: Created in 2018/9/30 11:16 PM
* @copyright: Copyright (c) 2018
* @version: V1.0
* @modified: yangkai.shen
*/
@SpringBootApplication
@Slf4j
public class SpringBootDemoLogbackApplication {
public static void main(String[] args) {
ConfigurableApplicationContext context = SpringApplication.run(SpringBootDemoLogbackApplication.class, args);
int length = context.getBeanDefinitionNames().length;
log.trace("Spring boot启动初始化了 {} 个 Bean", length);
log.debug("Spring boot启动初始化了 {} 个 Bean", length);
log.info("Spring boot启动初始化了 {} 个 Bean", length);
log.warn("Spring boot启动初始化了 {} 个 Bean", length);
log.error("Spring boot启动初始化了 {} 个 Bean", length);
try {
int i = 0;
int j = 1 / i;
} catch (Exception e) {
log.error("【SpringBootDemoLogbackApplication】启动异常:", e);
}
}
}
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<include resource="org/springframework/boot/logging/logback/defaults.xml"/>
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>INFO</level>
</filter>
<encoder>
<pattern>%date [%thread] %-5level [%logger{50}] %file:%line - %msg%n</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<appender name="FILE_INFO" class="ch.qos.logback.core.rolling.RollingFileAppender">
<!--如果只是想要 Info 级别的日志,只是过滤 info 还是会输出 Error 日志,因为 Error 的级别高, 所以我们使用下面的策略,可以避免输出 Error 的日志-->
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<!--过滤 Error-->
<level>ERROR</level>
<!--匹配到就禁止-->
<onMatch>DENY</onMatch>
<!--没有匹配到就允许-->
<onMismatch>ACCEPT</onMismatch>
</filter>
<!--日志名称,如果没有File 属性,那么只会使用FileNamePattern的文件路径规则如果同时有<File>和<FileNamePattern>,那么当天日志是<File>,明天会自动把今天的日志改名为今天的日期。即,<File> 的日志都是当天的。-->
<!--<File>logs/info.spring-boot-demo-logback.log</File>-->
<!--滚动策略,按照时间滚动 TimeBasedRollingPolicy-->
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<!--文件路径,定义了日志的切分方式——把每一天的日志归档到一个文件中,以防止日志填满整个磁盘空间-->
<FileNamePattern>logs/spring-boot-demo-logback/info.created_on_%d{yyyy-MM-dd}.part_%i.log</FileNamePattern>
<!--只保留最近90天的日志-->
<maxHistory>90</maxHistory>
<!--用来指定日志文件的上限大小,那么到了这个值,就会删除旧的日志-->
<!--<totalSizeCap>1GB</totalSizeCap>-->
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<!-- maxFileSize:这是活动文件的大小,默认值是10MB,本篇设置为1KB,只是为了演示 -->
<maxFileSize>2MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<!--<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">-->
<!--<maxFileSize>1KB</maxFileSize>-->
<!--</triggeringPolicy>-->
<encoder>
<pattern>%date [%thread] %-5level [%logger{50}] %file:%line - %msg%n</pattern>
<charset>UTF-8</charset> <!-- 此处设置字符集 -->
</encoder>
</appender>
<appender name="FILE_ERROR" class="ch.qos.logback.core.rolling.RollingFileAppender">
<!--如果只是想要 Error 级别的日志,那么需要过滤一下,默认是 info 级别的,ThresholdFilter-->
<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
<level>Error</level>
</filter>
<!--日志名称,如果没有File 属性,那么只会使用FileNamePattern的文件路径规则如果同时有<File>和<FileNamePattern>,那么当天日志是<File>,明天会自动把今天的日志改名为今天的日期。即,<File> 的日志都是当天的。-->
<!--<File>logs/error.spring-boot-demo-logback.log</File>-->
<!--滚动策略,按照时间滚动 TimeBasedRollingPolicy-->
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<!--文件路径,定义了日志的切分方式——把每一天的日志归档到一个文件中,以防止日志填满整个磁盘空间-->
<FileNamePattern>logs/spring-boot-demo-logback/error.created_on_%d{yyyy-MM-dd}.part_%i.log</FileNamePattern>
<!--只保留最近90天的日志-->
<maxHistory>90</maxHistory>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<!-- maxFileSize:这是活动文件的大小,默认值是10MB,本篇设置为1KB,只是为了演示 -->
<maxFileSize>2MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<encoder>
<pattern>%date [%thread] %-5level [%logger{50}] %file:%line - %msg%n</pattern>
<charset>UTF-8</charset> <!-- 此处设置字符集 -->
</encoder>
</appender>
<root level="info">
<appender-ref ref="CONSOLE"/>
<appender-ref ref="FILE_INFO"/>
<appender-ref ref="FILE_ERROR"/>
</root>
</configuration>
一个用来深度学习并实战 spring boot 的项目,目前总共包含 66 个集成demo,已经完成 55 个。
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