resources.java

strust 框架 的源程序以及java类源代码

        }

        // Get the arguments
        Arg[] args = field.getArgs(va.getName());
        String[] argValues = getArgValues(application, request, messages, locale, args);

        // Return the message
        return messages.getMessage(locale, msgKey, argValues);

    }

    /**
     * Gets the <code>ActionError</code> based on the 
     * <code>ValidatorAction</code> message and the <code>Field</code>'s 
     * arg objects.
     * @param request the servlet request
     * @param va Validator action
     * @param field the validator Field
     * @deprecated Use getActionMessage() instead.  This will be removed after
     * Struts 1.2.
     */
    public static ActionError getActionError(
        HttpServletRequest request,
        ValidatorAction va,
        Field field) {

        String args[] =
            getArgs(
                va.getName(),
                getMessageResources(request),
                RequestUtils.getUserLocale(request, null),
                field);

        String msg =
            field.getMsg(va.getName()) != null
                ? field.getMsg(va.getName())
                : va.getMsg();

        return new ActionError(msg, args);
    }
    
    /**
     * Gets the <code>ActionMessage</code> based on the 
     * <code>ValidatorAction</code> message and the <code>Field</code>'s 
     * arg objects.
     * @param request the servlet request
     * @param va Validator action
     * @param field the validator Field
     */
    public static ActionMessage getActionMessage(
        HttpServletRequest request,
        ValidatorAction va,
        Field field) {

        String args[] =
            getArgs(
                va.getName(),
                getMessageResources(request),
                RequestUtils.getUserLocale(request, null),
                field);

        String msg =
            field.getMsg(va.getName()) != null
                ? field.getMsg(va.getName())
                : va.getMsg();

        return new ActionMessage(msg, args);
    }

    /**
     * Gets the <code>ActionMessage</code> based on the 
     * <code>ValidatorAction</code> message and the <code>Field</code>'s 
     * arg objects.
     * @param validator the Validator
     * @param request the servlet request
     * @param va Validator action
     * @param field the validator Field
     */
    public static ActionMessage getActionMessage(
        Validator validator,
        HttpServletRequest request,
        ValidatorAction va,
        Field field) {

        Msg msg = field.getMessage(va.getName());
        if (msg != null && !msg.isResource()) {
            return new ActionMessage(msg.getKey(), false);
        }

        String msgKey    = null;
        String msgBundle = null;
        if (msg == null) {
           msgKey = va.getMsg();
        } else {
           msgKey    = msg.getKey();
           msgBundle = msg.getBundle();
        }

        if (msgKey == null || msgKey.length() == 0) {
            return new ActionMessage("??? " + va.getName() + "." + field.getProperty() + " ???", false);
        }

        ServletContext application = (ServletContext)validator.getParameterValue(SERVLET_CONTEXT_PARAM);
        MessageResources messages = getMessageResources(application, request, msgBundle);
        Locale locale = RequestUtils.getUserLocale(request, null);

        Arg[] args = field.getArgs(va.getName());
        String[] argValues = getArgValues(application, request, messages, locale, args);

        ActionMessage actionMessage = null;
        if (msgBundle == null) {
            actionMessage = new ActionMessage(msgKey, argValues);
        } else {
            String message = messages.getMessage(locale, msgKey, argValues);
            actionMessage = new ActionMessage(message, false);
        }
        return actionMessage;

    }


    /**
     * Gets the message arguments based on the current 
     * <code>ValidatorAction</code> and <code>Field</code>.
     * @param actionName action name
     * @param messages message resources
     * @param locale the locale
     * @param field the validator field
     */
    public static String[] getArgs(
        String actionName,
        MessageResources messages,
        Locale locale,
        Field field) {

        String[] argMessages = new String[4];

        Arg[] args =
            new Arg[] {
                field.getArg(actionName,0),
                field.getArg(actionName,1),
                field.getArg(actionName,2),
                field.getArg(actionName,3)};

        for (int i = 0; i < args.length; i++) {
            if (args[i] == null) {
                continue;
            }

            if (args[i].isResource()) {
                argMessages[i] = getMessage(messages, locale, args[i].getKey());
            } else {
                argMessages[i] = args[i].getKey();
            }

        }

        return argMessages;
    }

    /**
     * Gets the message arguments based on the current 
     * <code>ValidatorAction</code> and <code>Field</code>.
     * @param application the servlet context
     * @param request the servlet request
     * @param defaultMessages Default message resources
     * @param locale the locale
     * @param args The arguments for the message
     */
    private static String[] getArgValues(
        ServletContext application,
        HttpServletRequest request,
        MessageResources defaultMessages,
        Locale locale,
        Arg[] args) {

        if (args == null || args.length == 0) {
            return null;
        }

        String[] values = new String[args.length];
        for (int i = 0; i < args.length; i++) {
            if (args[i] != null) {
                if (args[i].isResource()) {

                    MessageResources messages = defaultMessages;
                    if (args[i].getBundle() != null) {
                        messages = getMessageResources(application, request, args[i].getBundle());
                    }
                    values[i] = messages.getMessage(locale, args[i].getKey());

                } else {

                    values[i] = args[i].getKey();

                }
            }
        }

        return values;

    }

    /**
     * Initialize the <code>Validator</code> to perform validation.
     *
     * @param key The key that the validation rules are under (the form elements 
     * name attribute).
     * @param bean The bean validation is being performed on.
     * @param application servlet context
     * @param request The current request object.
     * @param errors The object any errors will be stored in.
     * @param page This in conjunction with  the page property of a 
     * <code>Field<code> can control the processing of fields.  If the field's 
     * page is less than or equal to this page value, it will be processed.
     */
    public static Validator initValidator(
        String key,
        Object bean,
        ServletContext application,
        HttpServletRequest request,
        ActionMessages errors,
        int page) {

        ValidatorResources resources =
            Resources.getValidatorResources(application, request);

        Locale locale = RequestUtils.getUserLocale(request, null);

        Validator validator = new Validator(resources, key);
        validator.setUseContextClassLoader(true);

        validator.setPage(page);

        validator.setParameter(SERVLET_CONTEXT_PARAM, application);
        validator.setParameter(HTTP_SERVLET_REQUEST_PARAM, request);
        validator.setParameter(Validator.LOCALE_PARAM, locale);
        validator.setParameter(ACTION_MESSAGES_PARAM, errors);
        validator.setParameter(Validator.BEAN_PARAM, bean);

        return validator;
    }

}