org.kuali.mobility.writer.controllers.WriterMediaController.java Source code

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Here is the source code for org.kuali.mobility.writer.controllers.WriterMediaController.java

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/**
 * The MIT License
 * Copyright (c) 2011 Kuali Mobility Team
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package org.kuali.mobility.writer.controllers;

import org.apache.commons.io.IOUtils;
import org.kuali.mobility.writer.entity.Media;
import org.kuali.mobility.writer.service.WriterService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

/**
 * Controller for Writer media
 *
 * @author Kuali Mobility Team (mobility.collab@kuali.org)
 * @since 3.1
 */
@Controller
@RequestMapping("/writer/{instance}/media")
public class WriterMediaController {

    /**
     * Reference to the WriterService
     */
    @Autowired
    @Qualifier("writerService")
    private WriterService service;

    @RequestMapping(value = "/{mediaId}", method = RequestMethod.GET)
    public void getMedia(@PathVariable int mediaId,
            @RequestParam(value = "thumb", required = false, defaultValue = "false") boolean thumb,
            HttpServletRequest request, HttpServletResponse response) throws IOException {

        long dateChanged = request.getDateHeader("If-Modified-Since") / 1000;

        File mediaFile = service.getMediaFile(mediaId, thumb);
        long mediaChanged = mediaFile.lastModified() / 1000;
        if (dateChanged == mediaChanged) {
            response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
            return;
        }
        Media media = service.getMedia(mediaId);
        response.setContentType(media.getMimeType());
        response.setDateHeader("Last-Modified", mediaFile.lastModified());

        int bytesWritten = IOUtils.copy(new FileInputStream(mediaFile), response.getOutputStream());
        response.setContentLength(bytesWritten);

    }

    /**
     * Controller to view an article's image
     */
    @RequestMapping(value = "/view/{mediaId}", method = RequestMethod.GET)
    public String viewImage(@PathVariable(value = "mediaId") long mediaId,
            @PathVariable("instance") String instance, Model uiModel) {

        // add to uiModel
        uiModel.addAttribute("mediaId", mediaId);
        uiModel.addAttribute("toolInstance", instance);
        return "writer/viewImage";
    }

}