Spring Boot中日志每日分割

问题

想使用Spring Boot中日志输出，这样之后遇到问题，就能够翻看日志数据，看看程序运行的过程，便于排查错误。

logback基础配置

logback-spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <include resource="org/springframework/boot/logging/logback/defaults.xml" />
    <property name="LOG_FILE" value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}/}spring.log}"/>
    <include resource="org/springframework/boot/logging/logback/console-appender.xml" />
    <include resource="org/springframework/boot/logging/logback/file-appender.xml" />
    <root level="INFO">
        <appender-ref ref="CONSOLE" />
        <appender-ref ref="FILE" />
    </root>
</configuration>

application.properties

logging.path=logs

上面两步，主要就是对spring-boot对最基础日志配置。

按日期分割

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
	<include resource="org/springframework/boot/logging/logback/defaults.xml" />
	<property name="LOG_FILE"
		value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}/}spring.log}" />
	<include
		resource="org/springframework/boot/logging/logback/console-appender.xml" />
	<appender name="DAY_FILE"
		class="ch.qos.logback.core.rolling.RollingFileAppender">
		<encoder>
			<pattern>${FILE_LOG_PATTERN}</pattern>
		</encoder>
		<file>${LOG_FILE}</file>
		<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
			<fileNamePattern>${LOG_FILE}.%d{yyyy-MM-dd_HH-mm}.log</fileNamePattern>
			<maxHistory>365</maxHistory>
		</rollingPolicy>
	</appender>
	<root level="INFO">
		<appender-ref ref="CONSOLE" />
		<appender-ref ref="DAY_FILE" />
	</root>
</configuration>

**Note:**这里的DAY_FILE，其实主要就是参考org/springframework/boot/logging/logback/file-appender.xml进行配置。

Java代码调用

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


public class DemoController {
	private final static Logger logger = LoggerFactory.getLogger(DemoController.class);

    public Demo greeting(@RequestParam(value="serviceId", defaultValue="World") String serviceId) {
    		logger.info("serviceId-->" + serviceId);
    		...
    }
}

总结

没有必要去弄颜色输出，由于个人命令行工具已经弄好了主题，我使用的是德古拉主题；使用Logback理由，是由于Spring推荐使用。

参考： 77. Logging Spring boot——logback 基础使用篇（一） 设置spring-boot的logging Spring Boot 日志记录 SLF4J USING LOGBACK WITH SPRING BOOT