/*
* $Id$
*
* 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 org.apache.struts2.components.template;
import com.opensymphony.xwork2.inject.Inject;
import com.opensymphony.xwork2.util.ValueStack;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.struts2.ServletActionContext;
import org.apache.struts2.StrutsConstants;
import org.apache.struts2.components.Include;
import org.apache.struts2.components.UIBean;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.PageContext;
import java.util.List;
/**
* JSP based template engine.
*/
public class JspTemplateEngine extends BaseTemplateEngine {
private static final Logger LOG = LogManager.getLogger(JspTemplateEngine.class);
String encoding;
@Inject(StrutsConstants.STRUTS_I18N_ENCODING)
public void setEncoding(String encoding) {
this.encoding = encoding;
}
public void renderTemplate(TemplateRenderingContext templateContext) throws Exception {
Template template = templateContext.getTemplate();
LOG.debug("Trying to render template [{}], repeating through parents until we succeed", template);
UIBean tag = templateContext.getTag();
ValueStack stack = templateContext.getStack();
stack.push(tag);
PageContext pageContext = (PageContext) stack.getContext().get(ServletActionContext.PAGE_CONTEXT);
List<Template> templates = template.getPossibleTemplates(this);
Exception exception = null;
boolean success = false;
for (Template t : templates) {
try {
Include.include(getFinalTemplateName(t), pageContext.getOut(),
pageContext.getRequest(), (HttpServletResponse) pageContext.getResponse(), encoding);
success = true;
break;
} catch (Exception e) {
if (exception == null) {
exception = e;
}
}
}
if (!success) {
LOG.error("Could not render JSP template {}", templateContext.getTemplate());
if (exception != null) {
throw exception;
} else {
return;
}
}
stack.pop();
}
protected String getSuffix() {
return "jsp";
}
}