aTicker – applet

rberthou — Tue, 18 Dec 2007 21:51:57 +0000

Description

aTicker is a simple, free and small Ticker texte scrolling Applet. aTicker runs on all browsers with JDK 1.1x support. (aTicker is free with all source code).
This applet is available in JDK 1.1x

Source HTML

Parameters

Param name	Type	Description
file	string	Data file or prefix pour “line param”
cSep	char	text delimiteur (defaut “;”)
speed	integer	vitesse de defilement (1)
local	String	“true” : to read datas in parameters (no external data file)
delay	integer	mili-secs entre 2 affichages (100)
bgcolor	integer	Background color (en decimal)
Font1	String	Definition de la police : Face, Size, Style, color
Font2	String	Definition de la police active: Face, Size, Style, color

Data file

You can define your data in external file (static or dynamique PHP, ASP, ..) you must remove “local” parameter to use an external file

Col	Type	Description
1 Message	string	message
2 URL	string	Link URL si “–” pas de lien
3 Target	string	utiliser _script pour un appel javascript
4 Status line	String	Message affiché dans la ligne de “status”

Download

aticker.zip

Servlet : zipservlet

rberthou — Sat, 29 Sep 2007 09:48:08 +0000

This article aims at presenting how to create a servlet that sends a zip file to the user. We create here a html page with a form where you can enter an url. The servlet will get the content of this url (only the html page, not the images or other frames), create a zip file with it, and send you the file.

This example can be used as a basis to do various things.

Sending a file with a servlet

This involves two headers: Content-Type and Content-Disposition. The content type is set to “application/zip”. The other one is used to specify the filename used by the browser when it starts downloading the file.
```
res.setContentType("application/zip");
res.setHeader("Content-Disposition","inline; filename=output.zip;");
```
This header replace “res.setHeader(“Content-Disposition”,”attachment; filename=output.zip;”);” (not work with IE5)

In this example, we create a zip file. We’ll discuss later on how to create such files. As soon as we get a byte array with the zip file, we are ready to send it.
We simply call out.println(zip) to send the file.

li>Creating a zip file Have you ever noticed the java.util.zip package ?

Basically, a zip file is created by adding ZipEntries to a ZipOutputStream.
Once we have create a ZipEntry with a file name, we are ready to write an array of byte to the ZipOutputStream. Then we close the entry, finish the work with a call to finish(). We finally get a String containing the zipped file.

zout.putNextEntry(new ZipEntry("file.html"));
zout.write(b,0,size);
zout.closeEntry();
zout.finish();
String zip=bout.toString();

package javaside.servlet.sample ;
 
/**
* zipservlet.java
*
*  Main class for sample servlet
*
*  @author : R. BERTHOU
*  URL    : http://www.berthou.com/
* -----------------------------------------------------------
* Ver  * Author     *  DATE    * Description
* ....................DD/MM/YY...............................
* 1.00 * R.BERTHOU  * 12/01/01 *
**********************************************************/
 
import java.io.*;
 
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.zip.*;
import java.net.*;
import java.util.*;
 
public class zipservlet extends HttpServlet {
 
     public void doGet (HttpServletRequest req, HttpServletResponse res)
            throws ServletException, IOException
     {
          byte b[]=new byte[300000];
 
          URL url;
          String temp;
 
          ByteArrayOutputStream bout=new ByteArrayOutputStream();
          ZipOutputStream zout=new ZipOutputStream(bout);
          ServletOutputStream out = res.getOutputStream();
          ServletContext servletContext = getServletContext();
 
          if ((temp=req.getParameter("url"))!=null)
          {
               try {
                    url=new URL(temp);
                    URLConnection uc = url.openConnection();
 
                    DataInputStream input = new DataInputStream(uc.getInputStream());
 
                    int numRead=0;
                    int size=0;
 
                    while (numRead != -1) {
                         numRead = input.read(b,size,20000);
                         size+=numRead;
                    }
 
                    zout.putNextEntry(new ZipEntry("file.html"));
                    zout.write(b,0,size);
                    zout.closeEntry();
                    zout.finish();
                    String zip=bout.toString();
 
                    res.setContentType("application/zip");
                    res.setHeader("Content-Disposition","inline; filename=output.zip;");
 
                    out.println(zip);
                    out.flush();
 
               }
               catch (Exception e)
               {
                    res.setContentType("text/html");
                    out.println("");
                    out.println("");
                    out.println("An error has occured while processing "+temp+"");
                    out.println("Here is the exception: "+e+"");
                    e.printStackTrace(new PrintWriter(out));
                    out.println("");
                    out.println("");
               }
          }
     }
}

Berthou.com » exemple