org.apache.struts2.tiles.I18NAttributeEvaluator Maven / Gradle / Ivy
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* 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
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* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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package org.apache.struts2.tiles;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.TextProvider;
import com.opensymphony.xwork2.TextProviderFactory;
import com.opensymphony.xwork2.config.ConfigurationException;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.struts2.ServletActionContext;
import org.apache.tiles.evaluator.AbstractAttributeEvaluator;
import org.apache.tiles.request.Request;
import org.apache.tiles.request.servlet.ServletUtil;
import javax.servlet.http.HttpServletRequest;
public class I18NAttributeEvaluator extends AbstractAttributeEvaluator {
private static final Logger LOG = LogManager.getLogger(I18NAttributeEvaluator.class);
@Override
public Object evaluate(String expression, Request request) {
Object result = expression;
HttpServletRequest httpRequest = ServletUtil.getServletRequest(request).getRequest();
ActionContext ctx = ServletActionContext.getActionContext(httpRequest);
if (ctx == null) {
LOG.error("Cannot obtain HttpServletRequest from [{}]", request.getClass().getName());
throw new ConfigurationException("There is no ActionContext for current request!");
}
TextProviderFactory tpf = ctx.getContainer().getInstance(TextProviderFactory.class);
TextProvider textProvider = tpf.createInstance(ctx.getActionInvocation().getAction().getClass());
if (textProvider != null) {
LOG.debug("Trying find text [{}] using TextProvider {}", expression, textProvider);
result = textProvider.getText(expression);
}
return result;
}
}