java - Is there a way in logback.xml to specify file log destination through classpath:, without absolute path? -


i've in logback.xml configuration file appender:

<appender name="file"             class="ch.qos.logback.core.rolling.rollingfileappender">     <file>classpath:addressbooklog.log</file>     <encoder class="ch.qos.logback.classic.encoder.patternlayoutencoder">       <pattern>%d{dd mmm yyyy;hh:mm:ss} %-5level %logger{36} - %msg%n       </pattern>     </encoder>     <rollingpolicy class="ch.qos.logback.core.rolling.fixedwindowrollingpolicy">       <filenamepattern>classpath:addressbooklog.%i.log.zip</filenamepattern>       <minindex>1</minindex>       <maxindex>10</maxindex>     </rollingpolicy>      <triggeringpolicy       class="ch.qos.logback.core.rolling.sizebasedtriggeringpolicy">       <maxfilesize>2mb</maxfilesize>     </triggeringpolicy>   </appender>

so specify path file in print logs in relative way through classpath, doesn't work, no file addressbooklog.log created , written. works absolute paths /home/andrea/.../resources/addressbooklog.log have ideas on how make work classpath?

the chapter 3: logback configuration: variable substitution told various ways refer variable defined outside, e.g. system properties , classpath.

the significant configuration creating separate file contain variables. can make reference resource on class path instead of file well. e.g.

the logback.xml

<configuration>    <property resource="resource1.properties" />    <appender name="file" class="ch.qos.logback.core.fileappender">      <!-- here can refer variable        defined @ resource1.properties -->      <file>${user_home}/myapp.log</file>      <encoder>        <pattern>%msg%n</pattern>      </encoder>    </appender>     <root level="debug">      <appender-ref ref="file" />    </root> </configuration>

the external properties file (resource1.properties)

user_home=/path/to/somewhere

please note resource1.properties resource available @ classpath.

you may refer full version @ chapter 3: logback configuration: variable substitution. hope may help.


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