我们有一个spring-boot 1.0。
D:\Users\myName\My Projects\Work\my-co\my-app\src\my-app\my-app-camel>mvn clean spring-boot:run -Dlogback.statusListenerClass=ch.qos.logback.core.status.OnConsoleStatusListener -Dlogback.configurationFile=src/test/resources/logback.xml
<snip/>
[INFO] --- spring-boot-maven-plugin:0.5.0.M7:run (default-cli) @ my-app-camel ---
06:41:56,011 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [src/test/resources/logback.xml] at [file:/D:/Users/myName/My%20Projects/Work/my-co/my-app/src/my-app/my-app-camel/src/test/resources/logback.xml]
06:41:56,150 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
06:41:56,170 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Setting ReconfigureOnChangeFilter scanning period to 5 seconds
06:41:56,171 |-INFO in ReconfigureOnChangeFilter{invocationCounter=0} - Will scan for changes in [[D:\Users\myName\My Projects\Work\my-co\my-app\src\my-app\my-app-camel\src\test\resources\logback.xml]] every 5 seconds.
06:41:56,172 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Adding ReconfigureOnChangeFilter as a turbo filter
06:41:56,223 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
06:41:56,233 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [STDOUT]
06:41:56,276 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
06:41:56,389 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [me.moocar.logbackgelf.GelfAppender]
06:41:56,398 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [GELF]
06:41:56,567 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [com.my-co.my-app.] to DEBUG
06:41:56,568 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting additivity of logger [com.my-co.my-app.] to false
06:41:56,569 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[com.my-co.my-app.]
06:41:56,571 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [org.] to DEBUG
06:41:56,572 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting additivity of logger [org.] to false
06:41:56,572 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[org.]
06:41:56,573 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to INFO
06:41:56,574 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[ROOT]
06:41:56,574 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
06:41:56,578 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@4ffdcca5 - Registering current configuration as safe fallback point
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.0.0.RC1)
06:41:57.436 [com.my-co.my-app.Application.main()] INFO com.my-co.my-app.Application - Starting Application on MY-LAPTOP-HOSTNAME with PID 7812 (started by myName)
06:41:57.952 [com.my-co.my-app.Application.main()] INFO o.s.b.f.xml.XmlBeanDefinitionReader - Loading XML bean definitions from class path resource [META-INF/spring/camel-server.xml]
<etc./>
然而，当我们删除一个潜入 src/java/resources 的恶意 logback.xml 文件并在其他所有内容不变的情况下重新运行时（确保我们清理以删除目标中的文件）：
D:\Users\myName\My Projects\Work\my-co\my-app\src\my-app\my-app-camel>mvn clean spring-boot:run -Dlogback.statusListenerClass=ch.qos.logback.core.status.OnConsoleStatusListener -Dlogback.configurationFile=src/test/resources/logback.xml
<snip/>
[INFO]
[INFO] <<< spring-boot-maven-plugin:1.0.0.RC1:run (default-cli) @ my-app-camel <<<
[INFO]
[INFO] --- spring-boot-maven-plugin:1.0.0.RC1:run (default-cli) @ my-app-camel ---
06:53:59,598 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [src/test/resources/logback.xml] at [file:/D:/Users/myName/My%20Projects/Work/my-co/my-app/src/my-app/my-app-camel/src/test/resources/logback.xml]
06:53:59,736 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
06:53:59,755 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Setting ReconfigureOnChangeFilter scanning period to 5 seconds
06:53:59,756 |-INFO in ReconfigureOnChangeFilter{invocationCounter=0} - Will scan for changes in [[D:\Users\myName\My Projects\Work\my-co\my-app\src\my-app\my-app-camel\src\test\resources\logback.xml]] every 5 seconds.
06:53:59,757 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Adding ReconfigureOnChangeFilter as a turbo filter
06:53:59,806 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
06:53:59,817 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [STDOUT]
06:53:59,858 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
06:53:59,971 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [me.moocar.logbackgelf.GelfAppender]
06:53:59,980 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [GELF]
06:54:00,144 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [com.my-co.my-app.] to DEBUG
06:54:00,144 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting additivity of logger [com.my-co.my-app.] to false
06:54:00,145 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[com.my-co.my-app.]
06:54:00,148 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [org.] to DEBUG
06:54:00,148 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting additivity of logger [org.] to false
06:54:00,149 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[org.]
06:54:00,150 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to DEBUG
06:54:00,150 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[ROOT]
06:54:00,151 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
06:54:00,154 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@54c1f582 - Registering current configuration as safe fallback point
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.0.0.RC1)
2014-02-12 06:54:01.023 INFO 5240 --- [lication.main()] com.my-co.my-app.Application : Starting Application on MY-LAPTOP-HOSTNAME with PID 5240 (started by myName)
2014-02-12 06:54:01.564 INFO 5240 --- [lication.main()] o.s.b.f.xml.XmlBeanDefinitionReader : Loading XML bean definitions from class path resource [META-INF/spring/camel-server.xml]
<etc./>
您会注意到 spring-boot 启动后的日志记录格式与第一个输出不同。
为了感兴趣，我们的 logback.xml （位于 src/java/resources 和 src/test/resources 中）如下：
<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="5 seconds">
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{40} - %msg%n</pattern>
</encoder>
</appender>
<appender name="GELF" class="me.moocar.logbackgelf.GelfAppender">
<facility>logback-gelf-test</facility>
<graylog2ServerHost>XXX.XXX.XXX.XXX</graylog2ServerHost>
<graylog2ServerPort>NNNNN</graylog2ServerPort>
<useLoggerName>true</useLoggerName>
<useThreadName>true</useThreadName>
<useMarker>true</useMarker>
<graylog2ServerVersion>0.9.6</graylog2ServerVersion>
<chunkThreshold>1000</chunkThreshold>
<messagePattern>%m%rEx</messagePattern>
<shortMessagePattern>%.-100(%m%rEx)</shortMessagePattern>
<additionalField>ipAddress:_ip_address</additionalField>
<additionalField>requestId:_request_id</additionalField>
<staticAdditionalField>_node_name:www013</staticAdditionalField>
<includeFullMDC>true</includeFullMDC>
</appender>
<logger name="com.my-co.my-app." level="DEBUG" additivity="false">
<appender-ref ref="STDOUT" />
</logger>
<logger name="org." level="DEBUG" additivity="false">
<appender-ref ref="STDOUT" />
</logger>
<root level="INFO">
<appender-ref ref="STDOUT" />
<!--<appender-ref ref="GELF" />-->
</root>
</configuration>
总而言之，似乎（尽管我可能是错的）当 logback.xml 与我的 spring-boot 应用程序捆绑在一起时，它会被看到并使用（即在 src/java/resources 中），但是当我们不捆绑时，
至于解决这个问题，我们很困惑。
或者我们很愚蠢，但看不到它。
答案
默认策略假设如果您没有logback.xml（或其他标准文件名之一）在类路径中，那么您必须对默认值感到满意（请参阅LogbackLoggingSystem了解详情）。 logging.config（它不知道logback.configurationFile）。logging.config=file:./src/test/resources/logback.xml），或者确保您的配置文件位于类路径上。