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/* * $Id: LocalizedTextUtil.java 1436951 2013-01-22 14:28:15Z lukaszlenart $ * * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package com.opensymphony.xwork2.util; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionInvocation; import com.opensymphony.xwork2.ModelDriven; import com.opensymphony.xwork2.conversion.impl.XWorkConverter; import com.opensymphony.xwork2.util.logging.Logger; import com.opensymphony.xwork2.util.logging.LoggerFactory; import com.opensymphony.xwork2.util.reflection.ReflectionProviderFactory; import org.apache.commons.lang3.ObjectUtils; import java.beans.PropertyDescriptor; import java.lang.reflect.Field; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.text.MessageFormat; import java.util.*; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; import java.util.concurrent.CopyOnWriteArrayList; /** * Provides support for localization in XWork. * <p/> * <!-- START SNIPPET: searchorder --> * Resource bundles are searched in the following order:<p/> * <p/> * <ol> * <li>ActionClass.properties</li> * <li>Interface.properties (every interface and sub-interface)</li> * <li>BaseClass.properties (all the way to Object.properties)</li> * <li>ModelDriven's model (if implements ModelDriven), for the model object repeat from 1</li> * <li>package.properties (of the directory where class is located and every parent directory all the way to the root directory)</li> * <li>search up the i18n message key hierarchy itself</li> * <li>global resource properties</li> * </ol> * <p/> * <!-- END SNIPPET: searchorder --> * <p/> * <!-- START SNIPPET: packagenote --> * To clarify #5, while traversing the package hierarchy, Struts 2 will look for a file package.properties:<p/> * com/<br/> * acme/<br/> * package.properties<br/> * actions/<br/> * package.properties<br/> * FooAction.java<br/> * FooAction.properties<br/> * <p/> * If FooAction.properties does not exist, com/acme/action/package.properties will be searched for, if * not found com/acme/package.properties, if not found com/package.properties, etc. * <p/> * <!-- END SNIPPET: packagenote --> * <p/> * <!-- START SNIPPET: globalresource --> * A global resource bundle could be specified programatically, as well as the locale. * <p/> * <!-- END SNIPPET: globalresource --> * * @author Jason Carreira * @author Mark Woon * @author Rainer Hermanns * @author tm_jee * @version $Date: 2013-01-22 15:28:15 +0100 (Di, 22 Jan 2013) $ $Id: LocalizedTextUtil.java 1436951 2013-01-22 14:28:15Z lukaszlenart $ */ public class LocalizedTextUtil { private static final List<String> DEFAULT_RESOURCE_BUNDLES = new CopyOnWriteArrayList<String>(); private static final Logger LOG = LoggerFactory.getLogger(LocalizedTextUtil.class); private static boolean reloadBundles = false; private static final ResourceBundle EMPTY_BUNDLE = new EmptyResourceBundle(); private static final ConcurrentMap<String, ResourceBundle> bundlesMap = new ConcurrentHashMap<String, ResourceBundle>(); private static final ConcurrentMap<MessageFormatKey, MessageFormat> messageFormats = new ConcurrentHashMap<MessageFormatKey, MessageFormat>(); private static ClassLoader delegatedClassLoader; private static final String RELOADED = "com.opensymphony.xwork2.util.LocalizedTextUtil.reloaded"; static { clearDefaultResourceBundles(); } /** * Clears the internal list of resource bundles. */ public static void clearDefaultResourceBundles() { if (DEFAULT_RESOURCE_BUNDLES != null) { synchronized (DEFAULT_RESOURCE_BUNDLES) { DEFAULT_RESOURCE_BUNDLES.clear(); DEFAULT_RESOURCE_BUNDLES.add("com/opensymphony/xwork2/xwork-messages"); } } else { synchronized (DEFAULT_RESOURCE_BUNDLES) { DEFAULT_RESOURCE_BUNDLES.add("com/opensymphony/xwork2/xwork-messages"); } } } /** * Should resorce bundles be reloaded. * * @param reloadBundles reload bundles? */ public static void setReloadBundles(boolean reloadBundles) { LocalizedTextUtil.reloadBundles = reloadBundles; } /** * Add's the bundle to the internal list of default bundles. * <p/> * If the bundle already exists in the list it will be readded. * * @param resourceBundleName the name of the bundle to add. */ public static void addDefaultResourceBundle(String resourceBundleName) { //make sure this doesn't get added more than once synchronized (DEFAULT_RESOURCE_BUNDLES) { DEFAULT_RESOURCE_BUNDLES.remove(resourceBundleName); DEFAULT_RESOURCE_BUNDLES.add(0, resourceBundleName); } if (LOG.isDebugEnabled()) { LOG.debug("Added default resource bundle '" + resourceBundleName + "' to default resource bundles = " + DEFAULT_RESOURCE_BUNDLES); } } /** * Builds a {@link java.util.Locale} from a String of the form en_US_foo into a Locale * with language "en", country "US" and variant "foo". This will parse the output of * {@link java.util.Locale#toString()}. * * @param localeStr The locale String to parse. * @param defaultLocale The locale to use if localeStr is <tt>null</tt>. * @return requested Locale */ public static Locale localeFromString(String localeStr, Locale defaultLocale) { if ((localeStr == null) || (localeStr.trim().length() == 0) || ("_".equals(localeStr))) { if (defaultLocale != null) { return defaultLocale; } return Locale.getDefault(); } int index = localeStr.indexOf('_'); if (index < 0) { return new Locale(localeStr); } String language = localeStr.substring(0, index); if (index == localeStr.length()) { return new Locale(language); } localeStr = localeStr.substring(index + 1); index = localeStr.indexOf('_'); if (index < 0) { return new Locale(language, localeStr); } String country = localeStr.substring(0, index); if (index == localeStr.length()) { return new Locale(language, country); } localeStr = localeStr.substring(index + 1); return new Locale(language, country, localeStr); } /** * Returns a localized message for the specified key, aTextName. Neither the key nor the * message is evaluated. * * @param aTextName the message key * @param locale the locale the message should be for * @return a localized message based on the specified key, or null if no localized message can be found for it */ public static String findDefaultText(String aTextName, Locale locale) { List<String> localList = DEFAULT_RESOURCE_BUNDLES; for (String bundleName : localList) { ResourceBundle bundle = findResourceBundle(bundleName, locale); if (bundle != null) { reloadBundles(); try { return bundle.getString(aTextName); } catch (MissingResourceException e) { // ignore and try others } } } return null; } /** * Returns a localized message for the specified key, aTextName, substituting variables from the * array of params into the message. Neither the key nor the message is evaluated. * * @param aTextName the message key * @param locale the locale the message should be for * @param params an array of objects to be substituted into the message text * @return A formatted message based on the specified key, or null if no localized message can be found for it */ public static String findDefaultText(String aTextName, Locale locale, Object[] params) { String defaultText = findDefaultText(aTextName, locale); if (defaultText != null) { MessageFormat mf = buildMessageFormat(defaultText, locale); return formatWithNullDetection(mf, params); } return null; } /** * Finds the given resorce bundle by it's name. * <p/> * Will use <code>Thread.currentThread().getContextClassLoader()</code> as the classloader. * If {@link #delegatedClassLoader} is defined and the bundle cannot be found the current * classloader it will delegate to that. * * @param aBundleName the name of the bundle (usually it's FQN classname). * @param locale the locale. * @return the bundle, <tt>null</tt> if not found. */ public static ResourceBundle findResourceBundle(String aBundleName, Locale locale) { String key = createMissesKey(aBundleName, locale); ResourceBundle bundle; try { if (!bundlesMap.containsKey(key)) { bundle = ResourceBundle.getBundle(aBundleName, locale, Thread.currentThread().getContextClassLoader()); bundlesMap.putIfAbsent(key, bundle); } bundle = bundlesMap.get(key); } catch (MissingResourceException ex) { if (delegatedClassLoader != null) { try { if (!bundlesMap.containsKey(key)) { bundle = ResourceBundle.getBundle(aBundleName, locale, delegatedClassLoader); bundlesMap.putIfAbsent(key, bundle); } bundle = bundlesMap.get(key); } catch (MissingResourceException e) { bundle = EMPTY_BUNDLE; bundlesMap.putIfAbsent(key, bundle); } } else { bundle = EMPTY_BUNDLE; bundlesMap.putIfAbsent(key, bundle); } } return (bundle == EMPTY_BUNDLE) ? null : bundle; } /** * Sets a {@link ClassLoader} to look up the bundle from if none can be found on the current thread's classloader * * @param classLoader */ public static void setDelegatedClassLoader(final ClassLoader classLoader) { synchronized (bundlesMap) { delegatedClassLoader = classLoader; } } /** * Removes the bundle from any cached "misses" * * @param bundleName */ public static void clearBundle(final String bundleName) { bundlesMap.remove(bundleName); } /** * Creates a key to used for lookup/storing in the bundle misses cache. * * @param aBundleName the name of the bundle (usually it's FQN classname). * @param locale the locale. * @return the key to use for lookup/storing in the bundle misses cache. */ private static String createMissesKey(String aBundleName, Locale locale) { return aBundleName + "_" + locale.toString(); } /** * Calls {@link #findText(Class aClass, String aTextName, Locale locale, String defaultMessage, Object[] args)} * with aTextName as the default message. * * @see #findText(Class aClass, String aTextName, Locale locale, String defaultMessage, Object[] args) */ public static String findText(Class aClass, String aTextName, Locale locale) { return findText(aClass, aTextName, locale, aTextName, new Object[0]); } /** * Finds a localized text message for the given key, aTextName. Both the key and the message * itself is evaluated as required. The following algorithm is used to find the requested * message: * <p/> * <ol> * <li>Look for message in aClass' class hierarchy. * <ol> * <li>Look for the message in a resource bundle for aClass</li> * <li>If not found, look for the message in a resource bundle for any implemented interface</li> * <li>If not found, traverse up the Class' hierarchy and repeat from the first sub-step</li> * </ol></li> * <li>If not found and aClass is a {@link ModelDriven} Action, then look for message in * the model's class hierarchy (repeat sub-steps listed above).</li> * <li>If not found, look for message in child property. This is determined by evaluating * the message key as an OGNL expression. For example, if the key is * <i>user.address.state</i>, then it will attempt to see if "user" can be resolved into an * object. If so, repeat the entire process fromthe beginning with the object's class as * aClass and "address.state" as the message key.</li> * <li>If not found, look for the message in aClass' package hierarchy.</li> * <li>If still not found, look for the message in the default resource bundles.</li> * <li>Return defaultMessage</li> * </ol> * <p/> * When looking for the message, if the key indexes a collection (e.g. user.phone[0]) and a * message for that specific key cannot be found, the general form will also be looked up * (i.e. user.phone[*]). * <p/> * If a message is found, it will also be interpolated. Anything within <code>${...}</code> * will be treated as an OGNL expression and evaluated as such. * * @param aClass the class whose name to use as the start point for the search * @param aTextName the key to find the text message for * @param locale the locale the message should be for * @param defaultMessage the message to be returned if no text message can be found in any * resource bundle * @return the localized text, or null if none can be found and no defaultMessage is provided */ public static String findText(Class aClass, String aTextName, Locale locale, String defaultMessage, Object[] args) { ValueStack valueStack = ActionContext.getContext().getValueStack(); return findText(aClass, aTextName, locale, defaultMessage, args, valueStack); } /** * Finds a localized text message for the given key, aTextName. Both the key and the message * itself is evaluated as required. The following algorithm is used to find the requested * message: * <p/> * <ol> * <li>Look for message in aClass' class hierarchy. * <ol> * <li>Look for the message in a resource bundle for aClass</li> * <li>If not found, look for the message in a resource bundle for any implemented interface</li> * <li>If not found, traverse up the Class' hierarchy and repeat from the first sub-step</li> * </ol></li> * <li>If not found and aClass is a {@link ModelDriven} Action, then look for message in * the model's class hierarchy (repeat sub-steps listed above).</li> * <li>If not found, look for message in child property. This is determined by evaluating * the message key as an OGNL expression. For example, if the key is * <i>user.address.state</i>, then it will attempt to see if "user" can be resolved into an * object. If so, repeat the entire process fromthe beginning with the object's class as * aClass and "address.state" as the message key.</li> * <li>If not found, look for the message in aClass' package hierarchy.</li> * <li>If still not found, look for the message in the default resource bundles.</li> * <li>Return defaultMessage</li> * </ol> * <p/> * When looking for the message, if the key indexes a collection (e.g. user.phone[0]) and a * message for that specific key cannot be found, the general form will also be looked up * (i.e. user.phone[*]). * <p/> * If a message is found, it will also be interpolated. Anything within <code>${...}</code> * will be treated as an OGNL expression and evaluated as such. * <p/> * If a message is <b>not</b> found a WARN log will be logged. * * @param aClass the class whose name to use as the start point for the search * @param aTextName the key to find the text message for * @param locale the locale the message should be for * @param defaultMessage the message to be returned if no text message can be found in any * resource bundle * @param valueStack the value stack to use to evaluate expressions instead of the * one in the ActionContext ThreadLocal * @return the localized text, or null if none can be found and no defaultMessage is provided */ public static String findText(Class aClass, String aTextName, Locale locale, String defaultMessage, Object[] args, ValueStack valueStack) { String indexedTextName = null; if (aTextName == null) { if (LOG.isWarnEnabled()) { LOG.warn("Trying to find text with null key!"); } aTextName = ""; } // calculate indexedTextName (collection[*]) if applicable if (aTextName.contains("[")) { int i = -1; indexedTextName = aTextName; while ((i = indexedTextName.indexOf("[", i + 1)) != -1) { int j = indexedTextName.indexOf("]", i); String a = indexedTextName.substring(0, i); String b = indexedTextName.substring(j); indexedTextName = a + "[*" + b; } } // search up class hierarchy String msg = findMessage(aClass, aTextName, indexedTextName, locale, args, null, valueStack); if (msg != null) { return msg; } if (ModelDriven.class.isAssignableFrom(aClass)) { ActionContext context = ActionContext.getContext(); // search up model's class hierarchy ActionInvocation actionInvocation = context.getActionInvocation(); // ActionInvocation may be null if we're being run from a Sitemesh filter, so we won't get model texts if this is null if (actionInvocation != null) { Object action = actionInvocation.getAction(); if (action instanceof ModelDriven) { Object model = ((ModelDriven) action).getModel(); if (model != null) { msg = findMessage(model.getClass(), aTextName, indexedTextName, locale, args, null, valueStack); if (msg != null) { return msg; } } } } } // nothing still? alright, search the package hierarchy now for (Class clazz = aClass; (clazz != null) && !clazz.equals(Object.class); clazz = clazz.getSuperclass()) { String basePackageName = clazz.getName(); while (basePackageName.lastIndexOf('.') != -1) { basePackageName = basePackageName.substring(0, basePackageName.lastIndexOf('.')); String packageName = basePackageName + ".package"; msg = getMessage(packageName, locale, aTextName, valueStack, args); if (msg != null) { return msg; } if (indexedTextName != null) { msg = getMessage(packageName, locale, indexedTextName, valueStack, args); if (msg != null) { return msg; } } } } // see if it's a child property int idx = aTextName.indexOf("."); if (idx != -1) { String newKey = null; String prop = null; if (aTextName.startsWith(XWorkConverter.CONVERSION_ERROR_PROPERTY_PREFIX)) { idx = aTextName.indexOf(".", XWorkConverter.CONVERSION_ERROR_PROPERTY_PREFIX.length()); if (idx != -1) { prop = aTextName.substring(XWorkConverter.CONVERSION_ERROR_PROPERTY_PREFIX.length(), idx); newKey = XWorkConverter.CONVERSION_ERROR_PROPERTY_PREFIX + aTextName.substring(idx + 1); } } else { prop = aTextName.substring(0, idx); newKey = aTextName.substring(idx + 1); } if (prop != null) { Object obj = valueStack.findValue(prop); try { Object actionObj = ReflectionProviderFactory.getInstance().getRealTarget(prop, valueStack.getContext(), valueStack.getRoot()); if (actionObj != null) { PropertyDescriptor propertyDescriptor = ReflectionProviderFactory.getInstance() .getPropertyDescriptor(actionObj.getClass(), prop); if (propertyDescriptor != null) { Class clazz = propertyDescriptor.getPropertyType(); if (clazz != null) { if (obj != null) valueStack.push(obj); msg = findText(clazz, newKey, locale, null, args); if (obj != null) valueStack.pop(); if (msg != null) { return msg; } } } } } catch (Exception e) { LOG.debug("unable to find property " + prop, e); } } } // get default GetDefaultMessageReturnArg result = null; if (indexedTextName == null) { result = getDefaultMessage(aTextName, locale, valueStack, args, defaultMessage); } else { result = getDefaultMessage(aTextName, locale, valueStack, args, null); if (result != null && result.message != null) { return result.message; } result = getDefaultMessage(indexedTextName, locale, valueStack, args, defaultMessage); } // could we find the text, if not log a warn if (unableToFindTextForKey(result) && LOG.isDebugEnabled()) { String warn = "Unable to find text for key '" + aTextName + "' "; if (indexedTextName != null) { warn += " or indexed key '" + indexedTextName + "' "; } warn += "in class '" + aClass.getName() + "' and locale '" + locale + "'"; LOG.debug(warn); } return result != null ? result.message : null; } /** * Determines if we found the text in the bundles. * * @param result the result so far * @return <tt>true</tt> if we could <b>not</b> find the text, <tt>false</tt> if the text was found (=success). */ private static boolean unableToFindTextForKey(GetDefaultMessageReturnArg result) { if (result == null || result.message == null) { return true; } // did we find it in the bundle, then no problem? if (result.foundInBundle) { return false; } // not found in bundle return true; } /** * Finds a localized text message for the given key, aTextName, in the specified resource bundle * with aTextName as the default message. * <p/> * If a message is found, it will also be interpolated. Anything within <code>${...}</code> * will be treated as an OGNL expression and evaluated as such. * * @see #findText(java.util.ResourceBundle, String, java.util.Locale, String, Object[]) */ public static String findText(ResourceBundle bundle, String aTextName, Locale locale) { return findText(bundle, aTextName, locale, aTextName, new Object[0]); } /** * Finds a localized text message for the given key, aTextName, in the specified resource * bundle. * <p/> * If a message is found, it will also be interpolated. Anything within <code>${...}</code> * will be treated as an OGNL expression and evaluated as such. * <p/> * If a message is <b>not</b> found a WARN log will be logged. * * @param bundle the bundle * @param aTextName the key * @param locale the locale * @param defaultMessage the default message to use if no message was found in the bundle * @param args arguments for the message formatter. */ public static String findText(ResourceBundle bundle, String aTextName, Locale locale, String defaultMessage, Object[] args) { ValueStack valueStack = ActionContext.getContext().getValueStack(); return findText(bundle, aTextName, locale, defaultMessage, args, valueStack); } /** * Finds a localized text message for the given key, aTextName, in the specified resource * bundle. * <p/> * If a message is found, it will also be interpolated. Anything within <code>${...}</code> * will be treated as an OGNL expression and evaluated as such. * <p/> * If a message is <b>not</b> found a WARN log will be logged. * * @param bundle the bundle * @param aTextName the key * @param locale the locale * @param defaultMessage the default message to use if no message was found in the bundle * @param args arguments for the message formatter. * @param valueStack the OGNL value stack. */ public static String findText(ResourceBundle bundle, String aTextName, Locale locale, String defaultMessage, Object[] args, ValueStack valueStack) { try { reloadBundles(valueStack.getContext()); String message = TextParseUtil.translateVariables(bundle.getString(aTextName), valueStack); MessageFormat mf = buildMessageFormat(message, locale); return formatWithNullDetection(mf, args); } catch (MissingResourceException ex) { // ignore } GetDefaultMessageReturnArg result = getDefaultMessage(aTextName, locale, valueStack, args, defaultMessage); if (LOG.isWarnEnabled() && unableToFindTextForKey(result)) { LOG.warn("Unable to find text for key '" + aTextName + "' in ResourceBundles for locale '" + locale + "'"); } return result != null ? result.message : null; } /** * Gets the default message. */ private static GetDefaultMessageReturnArg getDefaultMessage(String key, Locale locale, ValueStack valueStack, Object[] args, String defaultMessage) { GetDefaultMessageReturnArg result = null; boolean found = true; if (key != null) { String message = findDefaultText(key, locale); if (message == null) { message = defaultMessage; found = false; // not found in bundles } // defaultMessage may be null if (message != null) { MessageFormat mf = buildMessageFormat(TextParseUtil.translateVariables(message, valueStack), locale); String msg = formatWithNullDetection(mf, args); result = new GetDefaultMessageReturnArg(msg, found); } } return result; } /** * Gets the message from the named resource bundle. */ private static String getMessage(String bundleName, Locale locale, String key, ValueStack valueStack, Object[] args) { ResourceBundle bundle = findResourceBundle(bundleName, locale); if (bundle == null) { return null; } reloadBundles(valueStack.getContext()); try { String message = TextParseUtil.translateVariables(bundle.getString(key), valueStack); MessageFormat mf = buildMessageFormat(message, locale); return formatWithNullDetection(mf, args); } catch (MissingResourceException e) { return null; } } private static String formatWithNullDetection(MessageFormat mf, Object[] args) { String message = mf.format(args); if ("null".equals(message)) { return null; } else { return message; } } private static MessageFormat buildMessageFormat(String pattern, Locale locale) { MessageFormatKey key = new MessageFormatKey(pattern, locale); MessageFormat format = messageFormats.get(key); if (format == null) { format = new MessageFormat(pattern); format.setLocale(locale); format.applyPattern(pattern); messageFormats.put(key, format); } return format; } /** * Traverse up class hierarchy looking for message. Looks at class, then implemented interface, * before going up hierarchy. */ private static String findMessage(Class clazz, String key, String indexedKey, Locale locale, Object[] args, Set<String> checked, ValueStack valueStack) { if (checked == null) { checked = new TreeSet<String>(); } else if (checked.contains(clazz.getName())) { return null; } // look in properties of this class String msg = getMessage(clazz.getName(), locale, key, valueStack, args); if (msg != null) { return msg; } if (indexedKey != null) { msg = getMessage(clazz.getName(), locale, indexedKey, valueStack, args); if (msg != null) { return msg; } } // look in properties of implemented interfaces Class[] interfaces = clazz.getInterfaces(); for (Class anInterface : interfaces) { msg = getMessage(anInterface.getName(), locale, key, valueStack, args); if (msg != null) { return msg; } if (indexedKey != null) { msg = getMessage(anInterface.getName(), locale, indexedKey, valueStack, args); if (msg != null) { return msg; } } } // traverse up hierarchy if (clazz.isInterface()) { interfaces = clazz.getInterfaces(); for (Class anInterface : interfaces) { msg = findMessage(anInterface, key, indexedKey, locale, args, checked, valueStack); if (msg != null) { return msg; } } } else { if (!clazz.equals(Object.class) && !clazz.isPrimitive()) { return findMessage(clazz.getSuperclass(), key, indexedKey, locale, args, checked, valueStack); } } return null; } private static void reloadBundles() { reloadBundles(ActionContext.getContext() != null ? ActionContext.getContext().getContextMap() : null); } private static void reloadBundles(Map<String, Object> context) { if (reloadBundles) { try { Boolean reloaded; if (context != null) { reloaded = (Boolean) ObjectUtils.defaultIfNull(context.get(RELOADED), Boolean.FALSE); } else { reloaded = Boolean.FALSE; } if (!reloaded) { bundlesMap.clear(); clearMap(ResourceBundle.class, null, "cacheList"); // now, for the true and utter hack, if we're running in tomcat, clear // it's class loader resource cache as well. clearTomcatCache(); if (context != null) context.put(RELOADED, true); if (LOG.isDebugEnabled()) { LOG.debug("Resource bundles reloaded"); } } } catch (Exception e) { LOG.error("Could not reload resource bundles", e); } } } private static void clearTomcatCache() { ClassLoader loader = Thread.currentThread().getContextClassLoader(); // no need for compilation here. Class cl = loader.getClass(); try { if ("org.apache.catalina.loader.WebappClassLoader".equals(cl.getName())) { clearMap(cl, loader, "resourceEntries"); } else { if (LOG.isDebugEnabled()) { LOG.debug("class loader " + cl.getName() + " is not tomcat loader."); } } } catch (Exception e) { if (LOG.isWarnEnabled()) { LOG.warn("couldn't clear tomcat cache", e); } } } private static void clearMap(Class cl, Object obj, String name) throws NoSuchFieldException, IllegalAccessException, NoSuchMethodException, InvocationTargetException { Field field = cl.getDeclaredField(name); field.setAccessible(true); Object cache = field.get(obj); synchronized (cache) { Class ccl = cache.getClass(); Method clearMethod = ccl.getMethod("clear"); clearMethod.invoke(cache); } } /** * Clears all the internal lists. */ public static void reset() { clearDefaultResourceBundles(); bundlesMap.clear(); messageFormats.clear(); } static class MessageFormatKey { String pattern; Locale locale; MessageFormatKey(String pattern, Locale locale) { this.pattern = pattern; this.locale = locale; } @Override public boolean equals(Object o) { if (this == o) return true; if (!(o instanceof MessageFormatKey)) return false; final MessageFormatKey messageFormatKey = (MessageFormatKey) o; if (locale != null ? !locale.equals(messageFormatKey.locale) : messageFormatKey.locale != null) return false; if (pattern != null ? !pattern.equals(messageFormatKey.pattern) : messageFormatKey.pattern != null) return false; return true; } @Override public int hashCode() { int result; result = (pattern != null ? pattern.hashCode() : 0); result = 29 * result + (locale != null ? locale.hashCode() : 0); return result; } } static class GetDefaultMessageReturnArg { String message; boolean foundInBundle; public GetDefaultMessageReturnArg(String message, boolean foundInBundle) { this.message = message; this.foundInBundle = foundInBundle; } } private static class EmptyResourceBundle extends ResourceBundle { @Override public Enumeration<String> getKeys() { return null; // dummy } @Override protected Object handleGetObject(String key) { return null; // dummy } } }