freemarker.log.Logger类的使用及代码示例

x33g5p2x  于2022-01-24 转载在 其他  
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本文整理了Java中freemarker.log.Logger类的一些代码示例，展示了Logger类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Logger类的具体详情如下：
包路径：freemarker.log.Logger
类名称：Logger

Logger介绍

[英]Delegates logger creation to an actual logging library. By default it looks for logger libraries in this order (in FreeMarker 2.3.x): Log4J, Avalon LogKit, JUL (i.e., java.util.logging). Prior to FreeMarker 2.4, SLF4J and Apache Commons Logging aren't searched automatically due to backward compatibility constraints. But if you have log4j-over-slf4j properly installed (means, you have no real Log4j in your class path, and SLF4J has a backing implementation like logback-classic), then FreeMarker will use SLF4J directly instead of Log4j (since FreeMarker 2.3.22).

If the auto detection sequence describet above doesn't give you the result that you want, see #SYSTEM_PROPERTY_NAME_LOGGER_LIBRARY.
[中]将记录器创建委托给实际的日志库。默认情况下，它按以下顺序查找记录器库（在FreeMarker 2.3.x中）：Log4J、Avalon LogKit、JUL（即java.util.logging）。在FreeMarker 2.4之前，由于向后兼容性限制，SLF4J和Apache Commons日志不会自动搜索。但是，如果您正确安装了log4j-over-slf4j（这意味着，您的类路径中没有真正的log4j，并且slf4j具有类似logback classic的支持实现），那么FreeMarker将直接使用slf4j而不是log4j（自FreeMarker 2.3.22以来）。
如果上面的自动检测序列描述没有给出您想要的结果，请参阅#系统(u属性)名称(u记录器)库。

代码示例

代码示例来源：origin: org.freemarker/freemarker

  1. private static Class getClass(String className) {
  2.   try {
  3.     return ClassUtil.forName(className);
  4.   } catch (Exception e) {
  5.     if (LOG.isDebugEnabled()) {
  6.       LOG.debug("Couldn't load class " + className, e);
  7.     }
  8.     return null;
  9.   }
  10. }

代码示例来源：origin: org.freemarker/freemarker

  1. private static ExpressionFactory tryExpressionFactoryImplementation(String packagePrefix) {
  2.   String className = packagePrefix + ".el.ExpressionFactoryImpl";
  3.   try {
  4.     Class cl = ClassUtil.forName(className);
  5.     if (ExpressionFactory.class.isAssignableFrom(cl)) {
  6.       LOG.info("Using " + className + " as implementation of " + 
  7.           ExpressionFactory.class.getName());
  8.       return (ExpressionFactory) cl.newInstance();
  9.     }
  10.     LOG.warn("Class " + className + " does not implement " + 
  11.         ExpressionFactory.class.getName());
  12.   } catch (ClassNotFoundException e) {
  13.   } catch (Exception e) {
  14.     LOG.error("Failed to instantiate " + className, e);
  15.   }
  16.   return null;
  17. }

代码示例来源：origin: org.freemarker/freemarker

  1. private void onSameNameClassesDetected(String className) {
  2.   // TODO: This behavior should be pluggable, as in environments where
  3.   // some classes are often reloaded or multiple versions of the
  4.   // same class is normal (OSGi), this will drop the cache contents
  5.   // too often.
  6.   if (LOG.isInfoEnabled()) {
  7.     LOG.info(
  8.         "Detected multiple classes with the same name, \"" + className +
  9.             "\". Assuming it was a class-reloading. Clearing class introspection " +
  10.             "caches to release old data.");
  11.   }
  12.   forcedClearCache();
  13. }

代码示例来源：origin: org.freemarker/freemarker

  1. public void report(TemplateException te, Environment env) {
  2.   String message = "Error executing FreeMarker template part in the #attempt block";
  3.   if (!logAsWarn) {
  4.     LOG.error(message, te);
  5.   } else {
  6.     LOG.warn(message, te);
  7.   }
  8. }

代码示例来源：origin: org.freemarker/freemarker

  1. TldParserForTaglibBuilding(ObjectWrapper wrapper) {
  2.   if (wrapper instanceof BeansWrapper) {
  3.     beansWrapper = (BeansWrapper) wrapper;
  4.   } else {
  5.     beansWrapper = null;
  6.     if (LOG.isWarnEnabled()) {
  7.       LOG.warn("Custom EL functions won't be loaded because "
  8.           + (wrapper == null
  9.               ? "no ObjectWrapper was specified for the TaglibFactory "
  10.                   + "(via TaglibFactory.setObjectWrapper(...), exists since 2.3.22)"
  11.               : "the ObjectWrapper wasn't instance of " + BeansWrapper.class.getName())
  12.           + ".");
  13.     }
  14.   }
  15. }

代码示例来源：origin: org.uberfire/uberfire-workbench-processors

  1. protected AbstractErrorAbsorbingProcessor() {
  2.   try {
  3.     freemarker.log.Logger.selectLoggerLibrary(freemarker.log.Logger.LIBRARY_NONE);
  4.   } catch (ClassNotFoundException e) {
  5.     rememberedInitError = e;
  6.   }
  7. }

代码示例来源：origin: org.freemarker/freemarker

  1. public void stop() {
  2.     this.stop = true;
  3.     if (serverSocket != null) {
  4.       try {
  5.         serverSocket.close();
  6.       } catch (IOException e) {
  7.         LOG.error("Unable to close server socket.", e);
  8.       }
  9.     }
  10.   }
  11. }

代码示例来源：origin: org.freemarker/freemarker

  1. private void addTldLocationsFromFileDirectory(final File dir) throws IOException, SAXException {
  2.   if (dir.isDirectory()) {
  3.     if (LOG.isDebugEnabled()) {
  4.       LOG.debug("Scanning for *.tld-s in File directory: " + StringUtil.jQuoteNoXSS(dir));
  5.     }
  6.     File[] tldFiles = dir.listFiles(new FilenameFilter() {
  8.       public boolean accept(File urlAsFile, String name) {
  9.         return isTldFileNameIgnoreCase(name);
  10.       }
  12.     });
  13.     if (tldFiles == null) {
  14.       throw new IOException("Can't list this directory for some reason: " + dir);
  15.     }
  16.     for (int i = 0; i < tldFiles.length; i++) {
  17.       final File file = tldFiles[i];
  18.       addTldLocationFromTld(new FileTldLocation(file));
  19.     }
  20.   } else {
  21.     LOG.warn("Skipped scanning for *.tld for non-existent directory: " + StringUtil.jQuoteNoXSS(dir));
  22.   }
  23. }

代码示例来源：origin: org.freemarker/freemarker

  1. private static void logInLogger(boolean error, String message, Throwable exception) {
  2.   boolean canUseRealLogger;
  3.   synchronized (Logger.class) {
  4.     canUseRealLogger = loggerFactory != null && !(loggerFactory instanceof _NullLoggerFactory);
  5.   }
  6.   if (canUseRealLogger) {
  7.     try {
  8.       final Logger logger = Logger.getLogger("freemarker.logger");
  9.       if (error) {
  10.         logger.error(message);
  11.       } else {
  12.         logger.warn(message);
  13.       }
  14.     } catch (Throwable e) {
  15.       canUseRealLogger = false;
  16.     }
  17.   }
  18.   if (!canUseRealLogger) {
  19.     System.err.println((error ? "ERROR" : "WARN") + " "
  20.         + LoggerFactory.class.getName() + ": " + message);
  21.     if (exception != null) {
  22.       System.err.println("\tException: " + tryToString(exception));
  23.       while (exception.getCause() != null) {
  24.         exception = exception.getCause();
  25.         System.err.println("\tCaused by: " + tryToString(exception));
  26.       }
  27.     }
  28.   }
  29. }

代码示例来源：origin: org.freemarker/freemarker

  1. if (getLogTemplateExceptions() && LOG.isErrorEnabled()
  2.   LOG.error("Error executing FreeMarker template", templateException);

代码示例来源：origin: org.freemarker/freemarker

  1. /**
  2.  * Convenience method. Tells the system to use Xalan for XPath queries.
  3.  * @throws Exception if the Xalan XPath classes are not present.
  4.  */
  5. static public void useXalanXPathSupport() throws Exception {
  6.   Class.forName("org.apache.xpath.XPath");
  7.   Class c = Class.forName("freemarker.ext.dom.XalanXPathSupport");
  8.   synchronized (STATIC_LOCK) {
  9.     xpathSupportClass = c;
  10.   }
  11.   LOG.debug("Using Xalan classes for XPath support");
  12. }

代码示例来源：origin: org.freemarker/freemarker

  1. LOG.debug("Looking for TLD locations in TLD-s specified in cfg.classpathTlds");
  2.     in = tldLocation.getInputStream();
  3.   } catch (IOException e) {
  4.     if (LOG.isWarnEnabled()) {
  5.       LOG.warn("Ignored classpath TLD location " + StringUtil.jQuoteNoXSS(tldResourcePath)
  6.           + " because of error", e);

代码示例来源：origin: org.freemarker/freemarker

  1. LOG.info("Failed to check if finetuneMethodAppearance is overidden in " + thisClass.getName()
  2.     + "; acting like if it was, but this way it won't utilize the shared class introspection "
  3.     + "cache.",
  4.   LOG.warn("Overriding " + BeansWrapper.class.getName() + ".finetuneMethodAppearance is deprecated "
  5.       + "and will be banned sometimes in the future. Use setMethodAppearanceFineTuner instead.");
  6.   ftmaDeprecationWarnLogged = true;

代码示例来源：origin: org.freemarker/freemarker

  1. /**
  2.  * Logs flag warning for a limited number of times. This is used to prevent
  3.  * log flooding.
  4.  */
  5. static void logFlagWarning(String message) {
  6.   if (!flagWarningsEnabled) return;
  7.   
  8.   int cnt;
  9.   synchronized (flagWarningsCntSync) {
  10.     cnt = flagWarningsCnt;
  11.     if (cnt < MAX_FLAG_WARNINGS_LOGGED) {
  12.       flagWarningsCnt++;
  13.     } else {
  14.       flagWarningsEnabled = false;
  15.       return;
  16.     }
  17.   }
  18.   message += " This will be an error in some later FreeMarker version!";
  19.   if (cnt + 1 == MAX_FLAG_WARNINGS_LOGGED) {
  20.     message += " [Will not log more regular expression flag problems until restart!]";
  21.   }
  22.   LOG.warn(message);
  23. }

代码示例来源：origin: org.freemarker/freemarker

  1. if (wrapper.isStrict()) {
  2.   throw new InvalidPropertyException("No such bean property: " + key);
  3. } else if (LOG.isDebugEnabled()) {
  4.   logNoSuchKey(key, classInfo);

代码示例来源：origin: org.freemarker/com.springsource.freemarker

  1. logger.info("Overwriting value [" + obj + "] for " +
  2.     " key '" + name + "' with [" + method + 
  3.     "] in static model for " + clazz.getName());

代码示例来源：origin: kiegroup/appformer

  1. protected AbstractErrorAbsorbingProcessor() {
  2.   try {
  3.     freemarker.log.Logger.selectLoggerLibrary(freemarker.log.Logger.LIBRARY_NONE);
  4.   } catch (ClassNotFoundException e) {
  5.     rememberedInitError = e;
  6.   }
  7. }

代码示例来源：origin: org.freemarker/freemarker

  1. private ServletException newServletExceptionWithFreeMarkerLogging(String message, Throwable cause) throws ServletException {
  2.   if (cause instanceof TemplateException) {
  3.     // For backward compatibility, we log into the same category as Environment did when
  4.     // log_template_exceptions was true.
  5.     LOG_RT.error(message, cause);
  6.   } else {
  7.     LOG.error(message, cause);
  8.   }
  9.   ServletException e = new ServletException(message, cause);
  10.   try {
  11.     // Prior to Servlet 2.5, the cause exception wasn't set by the above constructor.
  12.     // If we are on 2.5+ then this will throw an exception as the cause was already set.
  13.     e.initCause(cause);
  14.   } catch (Exception ex) {
  15.     // Ignored; see above
  16.   }
  17.   throw e;
  18. }

代码示例来源：origin: org.freemarker/com.springsource.freemarker

  1. private void handleTemplateException(TemplateException te)
  2.   throws TemplateException
  3. {
  4.   // Logic to prevent double-handling of the exception in
  5.   // nested visit() calls.
  6.   if(lastThrowable == te) {
  7.     throw te;
  8.   }
  9.   lastThrowable = te;
  10.   // Log the exception
  11.   if(logger.isErrorEnabled()) {
  12.     logger.error("Template processing error: " + StringUtil.jQuoteNoXSS(te.getMessage()), te);
  13.   }
  14.   // Stop exception is not passed to the handler, but
  15.   // explicitly rethrown.
  16.   if(te instanceof StopException) {
  17.     throw te;
  18.   }
  19.   // Finally, pass the exception to the handler
  20.   getTemplateExceptionHandler().handleTemplateException(te, this, out);
  21. }

代码示例来源：origin: org.freemarker/freemarker

  1. static public void useSunInternalXPathSupport() throws Exception {
  2.   Class.forName("com.sun.org.apache.xpath.internal.XPath");
  3.   Class c = Class.forName("freemarker.ext.dom.SunInternalXalanXPathSupport");
  4.   synchronized (STATIC_LOCK) {
  5.     xpathSupportClass = c;
  6.   }
  7.   LOG.debug("Using Sun's internal Xalan classes for XPath support");
  8. }

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