org.zdevra.guice.mvc.views.JspView Maven / Gradle / Ivy
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/*****************************************************************************
* Copyright 2011 Zdenko Vrabel
*
* Licensed 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.zdevra.guice.mvc.views;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.zdevra.guice.mvc.ModelMap;
import org.zdevra.guice.mvc.ViewPoint;
import org.zdevra.guice.mvc.exceptions.InvalidJspViewException;
/**
* The JSP view redirecting request to concrete JSP or HTML page
*/
public class JspView implements ViewPoint {
// ------------------------------------------------------------------------
private static final Logger logger = Logger.getLogger(JspView.class.getName());
private final String jspPath;
// ------------------------------------------------------------------------
public JspView(String jspPath) {
if (jspPath == null || jspPath.length() == 0) {
this.jspPath = "";
} else if ( !jspPath.startsWith("/") ) {
this.jspPath = "/" + jspPath;
} else {
this.jspPath = jspPath;
}
}
// ------------------------------------------------------------------------
@Override
public void render(ModelMap model, HttpServlet servlet, HttpServletRequest request, HttpServletResponse response) {
request = new HttpRequestForForward(request, jspPath);
RequestDispatcher dispatcher = servlet.getServletContext().getRequestDispatcher(jspPath);
if (dispatcher == null) {
throw new InvalidJspViewException(jspPath);
}
try {
dispatcher.forward(request, response);
} catch (ServletException e) {
logger.log(Level.SEVERE, "Error in JspView", e);
} catch (IOException e) {
logger.log(Level.SEVERE, "Error in JspView", e);
}
request = null;
}
@Override
public String toString() {
return "JspView [jsp=" + jspPath + "]";
}
// ------------------------------------------------------------------------
}