/**
   * Get a message from the first TextProvider encountered in the stack. If the first TextProvider
   * doesn't provide the message the default message is returned.
   *
   * <p>The search for a TextProvider is iterative from the root of the stack.
   *
   * <p>This method was refactored from {@link org.apache.struts2.components.Text} to use a
   * consistent implementation across UIBean components.
   *
   * @param key the message key in the resource bundle
   * @param defaultMessage the message to return if not found (evaluated for OGNL)
   * @param args an array args to be used in a {@link java.text.MessageFormat} message
   * @param stack the value stack to use for finding the text
   * @param searchStack search stack for the key
   * @return the message if found, otherwise the defaultMessage
   */
  public static String getText(
      String key, String defaultMessage, List<Object> args, ValueStack stack, boolean searchStack) {
    String msg = null;
    TextProvider tp = null;

    for (Object o : stack.getRoot()) {
      if (o instanceof TextProvider) {
        tp = (TextProvider) o;
        msg = tp.getText(key, null, args, stack);

        break;
      }
    }

    if (msg == null) {
      // evaluate the defaultMesage as an OGNL expression
      if (searchStack) msg = stack.findString(defaultMessage);

      if (msg == null) {
        // use the defaultMessage literal value
        msg = defaultMessage;
      }

      if (LOG.isWarnEnabled()) {
        if (tp != null) {
          LOG.warn(
              "The first TextProvider in the ValueStack ("
                  + tp.getClass().getName()
                  + ") could not locate the message resource with key '"
                  + key
                  + "'");
        } else {
          LOG.warn(
              "Could not locate the message resource '"
                  + key
                  + "' as there is no TextProvider in the ValueStack.");
        }
        if (defaultMessage.equals(msg)) {
          LOG.warn(
              "The default value expression '"
                  + defaultMessage
                  + "' was evaluated and did not match a property.  The literal value '"
                  + defaultMessage
                  + "' will be used.");
        } else {
          LOG.warn(
              "The default value expression '" + defaultMessage + "' evaluated to '" + msg + "'");
        }
      }
    }
    return msg;
  }
Example #2
0
 protected String getErrorMessage(ActionInvocation invocation) {
   Object action = invocation.getAction();
   if (action instanceof TextProvider) {
     return ((TextProvider) action).getText(INVALID_TOKEN_MESSAGE_KEY, DEFAULT_ERROR_MESSAGE);
   }
   return textProvider.getText(INVALID_TOKEN_MESSAGE_KEY, DEFAULT_ERROR_MESSAGE);
 }
 @Override
 public String intercept(ActionInvocation invocation) throws Exception {
   String result = this.resultName;
   try {
     result = invocation.invoke();
   } catch (AppException e) {
     Object action = invocation.getAction();
     if (action instanceof TextProvider) {
       TextProvider tp = (TextProvider) action;
       Result error = new Result(e.getExCode(), tp.getText("ex." + e.getExCode()), null);
       HttpServletRequest request = ServletActionContext.getRequest();
       request.setAttribute(Result.RET, error.getRet());
       request.setAttribute(Result.MSG, error.getMsg());
       if (LOG.isDebugEnabled()) {
         LOG.debug("Catch a Appexception and write error to request = " + error.toString());
       }
     }
   }
   return result;
 }