Resource servlet from wicket

[Mathias P.W Nilsson]

Hi!

I have this servlet that is called from wicket only using a url
/Files/thefile.jpg
The servlet is url-mapped on /Files/*. But it is very slow and I was just
wondering could this be done in a better way

package se.edgesoft.hairless.web.resource;

import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.context.support.WebApplicationContextUtils;

import se.edgesoft.hairless.application.HairlessApplicationSettings;

/**
 * Resource servlet for getting images and flash movies
 * @author Mathias Nilsson
 *
 */
public class FileResourceServlet  extends HttpServlet {
        private static final long serialVersionUID = 1L;
        private static ServletConfig config;

        
    protected  Object getBean(String name) {
        Object obj =
WebApplicationContextUtils.getWebApplicationContext(config.getServletContext()).getBean(name);
        return obj;
    }
    public void destroy() {
        config = null;
    }

    public ServletConfig getServletConfig() {
        return config;
    }

    public String getServletInfo() {
        return "Resource servlet for Hairless";
    }

    public void init(ServletConfig servletConfig ) throws ServletException {
        config = servletConfig;
       
    }
    
    public HairlessApplicationSettings getHairlessApplicationSettings(){
        return (HairlessApplicationSettings)getBean(
"hairlessApplicationSettings" );
    }
    
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
                 try {
                         File file = new File(
getHairlessApplicationSettings().getFileResourcePath() ,
request.getRequestURI().replace( request.getContextPath(), "" ) );
                 int length   = 0;
                 ServletOutputStream op = response.getOutputStream();
                 ServletContext context  =
getServletConfig().getServletContext();
                 String mimetype = context.getMimeType(
file.getAbsolutePath() );
                 response.setContentType( (mimetype != null) ? mimetype :
"application/octet-stream" );
                 response.setContentLength( (int)file.length() );

                 byte[] bbuf = new byte[1024];
                 DataInputStream in = new DataInputStream(new
FileInputStream(file));

                 while ((in != null) && ((length = in.read(bbuf)) != -1))
                 {
                     op.write(bbuf,0,length);
                 }

                 in.close();
                 op.flush();
                 op.close();
               
             } catch (Exception e) {
             }
    }
    
   
}

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