Redirect301Render.java

/**
 * Copyright (c) 2011-2013, James Zhan 詹波 (jfinal@126.com).
 *
 * 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 net.tooan.ynpay.third.jfinal.render;

import javax.servlet.http.HttpServletResponse;

/**
 * Redirect301Render.
 */
public class Redirect301Render extends Render {

    private static final long serialVersionUID = -115860447207423482L;
    private String url;
    private boolean withQueryString;
    private static final String contextPath = RedirectRender.getContxtPath();

    public Redirect301Render(String url) {
        this.url = url;
        this.withQueryString = false;
    }

    public Redirect301Render(String url, boolean withQueryString) {
        this.url = url;
        this.withQueryString = withQueryString;
    }

    public void render() {
        if (contextPath != null && url.indexOf("://") == -1)
            url = contextPath + url;

        if (withQueryString) {
            String queryString = request.getQueryString();
            if (queryString != null)
                url = url + "?" + queryString;
        }

        response.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
        // response.sendRedirect(url);	// always 302
        response.setHeader("Location", url);
        response.setHeader("Connection", "close");
    }
}