java - Spring Boot Logback 记录 DEBUG 消息

Question

当 Spring Boot 应该在 INFO 级别时，我在将 DEBUG 级别的日志项吐到终端时遇到问题。

logback.xml

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

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</Pattern>
        </layout>
    </appender>

    <root level="INFO">
        <appender-ref ref="STDOUT" />
    </root>

    <logger name="org.springframework.web" level="WARN"/>

</configuration>

pom.xml 中的依赖关系 (省略了与日志记录无关的所有内容)

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <!-- Logging -->
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>${logback.version}</version>
    </dependency>
</dependencies>

终端中不断出现的行

20:01:00.937 [main] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Searching for key 'serverServletmapping' in [servletConfigInitParams]
20:01:00.937 [main] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Searching for key 'serverServletmapping' in [servletContextInitParams]
20:01:00.937 [main] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Searching for key 'serverServletmapping' in [systemProperties]
20:01:00.937 [main] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Searching for key 'serverServletmapping' in [systemEnvironment]
20:01:00.937 [main] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Searching for key 'serverServletmapping' in [random]
20:01:00.937 [main] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Searching for key 'serverServletmapping' in [applicationConfig: [classpath:/application.properties]]
20:01:00.938 [main] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Searching for key 'serverServletmapping' in [class path resource [sql.properties]]
20:01:00.938 [main] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Searching for key 'serverServletmapping' in [localProperties]
20:01:00.938 [main] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Could not find key 'serverServletmapping' in any property source. Returning [null]
20:01:00.938 [main] DEBUG o.s.core.env.MutablePropertySources - Adding [servletConfigInitParams] PropertySource with lowest search precedence
20:01:00.938 [main] DEBUG o.s.core.env.MutablePropertySources - Adding [servletContextInitParams] PropertySource with lowest search precedence
20:01:00.938 [main] DEBUG o.s.core.env.MutablePropertySources - Adding [systemProperties] PropertySource with lowest search precedence
20:01:00.938 [main] DEBUG o.s.core.env.MutablePropertySources - Adding [systemEnvironment] PropertySource with lowest search precedence
20:01:00.938 [main] DEBUG o.s.core.env.MutablePropertySources - Adding [random] PropertySource with lowest search precedence
20:01:00.938 [main] DEBUG o.s.core.env.MutablePropertySources - Adding [applicationConfig: [classpath:/application.properties]] PropertySource with lowest search precedence
20:01:00.938 [main] DEBUG o.s.core.env.MutablePropertySources - Adding [class path resource [sql.properties]] PropertySource with lowest search precedence

Answer 1

看起来 logback 没有找到你的 logback.xml文件。请引用logback documentation on config file location .

Configuration files such as logback.groovy, logback-test.xml or logback.xml can be located directly under any folder declared in the class path. For example, if the class path reads c:/java/jdk15/lib/rt.jar;c:/mylibs/ then the logback.xml file should be located directly under c:/mylibs/, that is as c:/mylibs/logback.xml.

Placing it under a sub-folder of c:/mylibs/, say, c:/mylibs/other/, will not work.

For web-applications, configuration files can be placed directly under WEB-INF/classes/.