Spring Boot 2.3.0刚刚发布，在正在开发中的项目中使用了一下，发原有的日志无法正常数据，看了一下官方文档，做了一下改动：

bootstrap.yml中的日志配置

logging:
  level:
    root: INFO
  file: 
    name: logs/${spring.application.name}.log

bootstrap.yml中原有配置是这样的：

logging:
  level:
    root: INFO
  file: logs/${spring.application.name}.log

附上logback-spring.xml文件的配置，这个是不需要改动的

<?xml version="1.0" encoding="UTF-8"?>

<configuration>
    <include resource="org/springframework/boot/logging/logback/defaults.xml" />
    <include
        resource="org/springframework/boot/logging/logback/console-appender.xml" />
    <appender name="FILE"
        class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoder class="net.logstash.logback.encoder.LogstashEncoder">

        </encoder>
        <file>${LOG_PATH:-.}/${LOG_FILE}</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_FILE}.%d{yyyy-MM-dd}.%i</fileNamePattern>
            <maxHistory>7</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy
                class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>5MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
    </appender>

    <root level="INFO">
        <appender-ref ref="CONSOLE" />
        <appender-ref ref="FILE" />
    </root>
</configuration>