com.poscoict.license.web.controller.DownloadView.java Source code

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Here is the source code for com.poscoict.license.web.controller.DownloadView.java

Source

package com.poscoict.license.web.controller;

import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.util.FileCopyUtils;
import org.springframework.web.servlet.view.AbstractView;

public class DownloadView extends AbstractView {

    public void Download() {
        setContentType("application/download; utf-8");
        System.out.println("Download");
    }

    private String getBrowser(HttpServletRequest request) {

        String header = request.getHeader("User-Agent");

        if (header.contains("MSIE")) {

            return "MSIE";

        } else if (header.contains("Chrome")) {

            return "Chrome";

        } else if (header.contains("Opera")) {

            return "Opera";

        }

        return "Firefox";

    }

    @Override
    protected void renderMergedOutputModel(Map<String, Object> model, HttpServletRequest request,
            HttpServletResponse response) throws Exception {
        @SuppressWarnings("unchecked")
        Map<String, Object> map = (Map<String, Object>) model.get("downloadFile");

        File file = (File) map.get("file");
        String fileName = "";
        if (map.get("fileName") != null)
            fileName = (String) map.get("fileName");
        else
            fileName = file.getName();

        response.setContentType(getContentType());
        response.setContentLength((int) file.length());

        String header = getBrowser(request);

        if (header.contains("MSIE")) {

            String docName = URLEncoder.encode(fileName, "UTF-8").replaceAll("\\+", "%20");

            response.setHeader("Content-Disposition", "attachment;filename=" + docName + ";");

        } else if (header.contains("Firefox")) {

            String docName = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");

            response.setHeader("Content-Disposition", "attachment; filename=\"" + docName + "\"");

        } else if (header.contains("Opera")) {

            String docName = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");

            response.setHeader("Content-Disposition", "attachment; filename=\"" + docName + "\"");

        } else if (header.contains("Chrome")) {

            String docName = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");

            response.setHeader("Content-Disposition", "attachment; filename=\"" + docName + "\"");

        }

        response.setHeader("Content-Type", "application/octet-stream");

        response.setHeader("Content-Transfer-Encoding", "binary;");

        response.setHeader("Pragma", "no-cache;");

        response.setHeader("Expires", "-1;");

        OutputStream out = response.getOutputStream();
        FileInputStream fis = null;

        try {
            fis = new FileInputStream(file);
            FileCopyUtils.copy(fis, out);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (fis != null) {
                try {
                    fis.close();
                } catch (Exception e) {
                }
            }
            if (out != null) {
                try {
                    out.close();
                } catch (Exception e) {
                }
            }
        }
        out.flush();
    }

}