com.antelmann.servlet
Class TextImageServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          com.antelmann.servlet.TextImageServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class TextImageServlet
extends javax.servlet.http.HttpServlet

generates a text image based on parameters

Author:

Holger Antelmann

See Also:

doGet(HttpServletRequest, HttpServletResponse), Serialized Form

Constructor Summary

TextImageServlet()

Method Summary

protected void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) generates an image based on the parameters text, font, foreground, background.
protected void	doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
static Map<String,String>	generateColorMap()
protected BufferedImage	generateImage(String text, String font, String foreground, String background, boolean antiAlias)
static String	generateQueryString(javax.servlet.http.HttpServletRequest request) generates the query part that is to follow the '?'
static String	generateQueryString(String text, Font font, Color foreground, Color background, boolean antiAlias) generates the query part that is to follow the '?'
static String[]	getFontFamilies()

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TextImageServlet

public TextImageServlet()

Method Detail

generateImage

protected BufferedImage generateImage(String text,
                                      String font,
                                      String foreground,
                                      String background,
                                      boolean antiAlias)

generateColorMap

public static Map<String,String> generateColorMap()

getFontFamilies

public static String[] getFontFamilies()

generateQueryString

public static String generateQueryString(String text,
                                         Font font,
                                         Color foreground,
                                         Color background,
                                         boolean antiAlias)

generates the query part that is to follow the '?'

generateQueryString

public static String generateQueryString(javax.servlet.http.HttpServletRequest request)

generates the query part that is to follow the '?'

doPost

protected void doPost(javax.servlet.http.HttpServletRequest request,
                      javax.servlet.http.HttpServletResponse response)
               throws javax.servlet.ServletException,
                      IOException

Overrides:

doPost in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

doGet

protected void doGet(javax.servlet.http.HttpServletRequest request,
                     javax.servlet.http.HttpServletResponse response)
              throws javax.servlet.ServletException,
                     IOException

generates an image based on the parameters text, font, foreground, background. An alternative to provide the font parameter is to provide fontFamily, fontType and fontSize.

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException