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| <h1 class="content-header header-section1" id="pgui_misc_logging" itemprop="headline">Logging</h1> |
| </div></div><p>FreeMarker integrates with the following logging packages: <a href="http://jakarta.apache.org/log4j">Log4J</a>, <a href="http://jakarta.apache.org/avalon/logkit">Avalon |
| LogKit</a>, and <a href="http://java.sun.com/j2se/1.4/docs/api/java/util/logging/package-summary.html">java.util.logging</a> |
| (Java2 platform 1.4 and above). You need not do anything in order for |
| FreeMarker to use these loggers; if any of them is discovered through |
| the class loader that loaded FreeMarker classes, it is used |
| automatically. All log messages produced by FreeMarker are logged into |
| the logger hierarchy whose top-level logger is named |
| <code class="inline-code">freemarker</code>. Currently used loggers are:</p> <div class="table-responsive"> |
| <table class="table"> |
| |
| <thead> |
| <tr> |
| <th>Logger name</th> |
| |
| |
| <th>Purpose</th> |
| |
| </tr> |
| |
| </thead> |
| |
| |
| <tbody> |
| <tr> |
| <td><code class="inline-code">freemarker.beans</code></td> |
| |
| |
| <td>Logs messages of the Beans wrapper module.</td> |
| |
| </tr> |
| |
| |
| <tr> |
| <td><code class="inline-code">freemarker.cache</code></td> |
| |
| |
| <td>Logs messages related to template loading and caching.</td> |
| |
| </tr> |
| |
| |
| <tr> |
| <td><code class="inline-code">freemarker.runtime</code></td> |
| |
| |
| <td>Logs template exceptions thrown during template |
| processing.</td> |
| |
| </tr> |
| |
| |
| <tr> |
| <td><code class="inline-code">freemarker.runtime.attempt</code></td> |
| |
| |
| <td>Logs template exceptions thrown during template processing, |
| but caught by |
| <code class="inline-code">attempt</code>/<code class="inline-code">recover</code> |
| directives. Enable DEBUG severity to see the exceptions.</td> |
| |
| </tr> |
| |
| |
| <tr> |
| <td><code class="inline-code">freemarker.servlet</code></td> |
| |
| |
| <td>Logs messages of the FreemarkerServlet class.</td> |
| |
| </tr> |
| |
| </tbody> |
| |
| </table> |
| </div> |
| <p>FreeMarker will look for the logging packages in this order, and |
| will use the first package it finds: Log4J, Avalon, java.util.logging. |
| However, if you call the static <code class="inline-code">selectLoggerLibrary</code> |
| method on the <code class="inline-code">freemarker.log.Logger</code> class with |
| appropriate parameter, you can explicitly select a logger package, or |
| even disable the logging.</p><p>You can also call the static |
| <code class="inline-code">selectLoggerLibrary</code> method on the |
| <code class="inline-code">freemarker.log.Logger</code> class and pass it a string |
| that will be used to prefix the above mentioned logger names. This is |
| useful if you want to have separate loggers on a per-application |
| basis.</p><div class="bottom-pagers-wrapper"><div class="pagers bottom"><a class="paging-arrow previous" href="pgui_misc_beanwrapper.html"><span>Previous</span></a><a class="paging-arrow next" href="pgui_misc_servlet.html"><span>Next</span></a></div></div></div></div> </div> |
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| <time itemprop="dateModified" datetime="2020-07-09T23:48:37Z" title="Thursday, July 9, 2020 11:48:37 PM GMT">2020-07-09 23:48:37 GMT</time> </p> |
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