Logback-classic in Jboss and Spring

Question

I'm working on a project where I thought I would try using logback-classic for debugging and log rotation. I'm using this in a Maven context for building and creating a .war file to be deployed in JBoss 7.1 Application Server.

I've placed a logback.xml file in the resources folder in the code and a logback-test.xml in test/resources.

The active jar I'm using is the SLF4J to print the actual debugging.

public class MyClass extends MultiActionController {
  private Logger logger = LoggerFactory.getLogger(MyClass.class);

  public MyClass() {
    logger.debug("hello");
  }
}

When I run a JUnit test on the code in Maven itself it works, but after building a .war file i don't get any debugging in STDOUT nor can I find a file created.

I know that I've removed the actual logging from STDOUT in the config file, but where is the logging going...

the logback.xml:

<?xml version="1.0" encoding="UTF-8" ?>
<configuration>
    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">

        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>DEBUG</level>
        </filter>

        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/myproject.%d{yyyy-MM-dd}.log</FileNamePattern>
            <MaxHistory>30</MaxHistory>
        </rollingPolicy> 

        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%d{yyMMdd HH:mm:ss.SSS} [%-5.5level] [%-25.25logger] %msg%n</pattern>
        </encoder>
    </appender>

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

The folder "logs" do I need to explicit create it in the JBoss instance or need to refer relative to it for this to work? Or is there something I missed? Do I need to put the logback.xml file in the JBoss instance?

best, Henrik

Charlee Chitsuk Charlee Chitsuk · Accepted Answer · 2013-03-08T07:12:40

Firstly you should ensure that the logback.xml is at the classpath, e.g. WEB-INF/classes/logback.xml as the mentioning at Chapter 3: Logback configuration.

The Chapter 4: Appenders mentions about FileAppender and RollingFileAppender properties as

file *String* The name of the file to write to. If the file does not exist, it is created. On the MS Windows platform users frequently forget to escape back slashes. For example, the value c:\temp\test.log is not likely to be interpreted properly as '\t' is an escape sequence interpreted as a single tab character (\u0009). Correct values can be specified as c:/temp/test.log or alternatively as c:\temp\test.log. The File option has no default value. If the parent directory of the file does not exist, FileAppender will automatically create it, including any necessary but nonexistent parent directories.

The example is for logback.xml is as the following:-

<configuration>
  <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>logFile.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <!-- daily rollover -->
      <fileNamePattern>logFile.%d{yyyy-MM-dd}.log</fileNamePattern>

      <!-- keep 30 days' worth of history -->
      <maxHistory>30</maxHistory>
    </rollingPolicy>

    <encoder>
      <pattern>%-4relative [%thread] %-5level %logger{35} - %msg%n</pattern>
    </encoder>
  </appender> 

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

I hope this may help.

Logback-classic in Jboss and Spring

2 Answers