release13.07/framework/webapp/src/org/ofbiz/webapp/taglib/UrlTag.java

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 * 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
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package org.ofbiz.webapp.taglib;

import java.io.IOException;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.BodyContent;
import javax.servlet.jsp.tagext.BodyTagSupport;

import org.ofbiz.base.util.Debug;
import org.ofbiz.base.util.UtilJ2eeCompat;
import org.ofbiz.webapp.control.RequestHandler;

/**
 * UrlTag - Creates a URL string prepending the current control path.
 */
@SuppressWarnings("serial")
public class UrlTag extends BodyTagSupport {

    public static final String module = UrlTag.class.getName();

    @Override
    public int doEndTag() throws JspException {
        HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
        HttpServletResponse response = (HttpServletResponse) pageContext.getResponse();

        ServletContext context = (ServletContext) request.getAttribute("servletContext");
        RequestHandler rh = (RequestHandler) context.getAttribute("_REQUEST_HANDLER_");

        BodyContent body = getBodyContent();

        String baseURL = body.getString();
        String newURL = rh.makeLink(request, response, baseURL);

        body.clearBody();

        try {
            getPreviousOut().print(newURL);
        } catch (IOException e) {
            if (UtilJ2eeCompat.useNestedJspException(pageContext.getServletContext())) {
                throw new JspException(e.getMessage(), e);
            } else {
                Debug.logError(e, "Server does not support nested exceptions, here is the exception", module);
                throw new JspException(e.toString());
            }
        }
        return SKIP_BODY;
    }
}