📄 shadowedtext.java
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package coreservlets;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.awt.*;
/** Servlet that generates JPEG images representing
* a designated message with an oblique shadowed
* version behind it.
* <P>
* Taken from Core Servlets and JavaServer Pages 2nd Edition
* from Prentice Hall and Sun Microsystems Press,
* http://www.coreservlets.com/.
* © 2003 Marty Hall; may be freely used or adapted.
*/
public class ShadowedText extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
String wantsList = request.getParameter("showList");
if (wantsList != null) {
showFontList(response);
} else {
String message = request.getParameter("message");
if ((message == null) || (message.length() == 0)) {
message = "Missing 'message' parameter";
}
String fontName = request.getParameter("fontName");
if ((fontName == null) || (fontName.length() == 0)) {
fontName = "Serif";
}
String fontSizeString = request.getParameter("fontSize");
int fontSize;
try {
fontSize = Integer.parseInt(fontSizeString);
} catch(NumberFormatException nfe) {
fontSize = 90;
}
response.setContentType("image/jpeg");
MessageImage.writeJPEG
(MessageImage.makeMessageImage(message,
fontName,
fontSize),
response.getOutputStream());
}
}
private void showFontList(HttpServletResponse response)
throws IOException {
PrintWriter out = response.getWriter();
String docType =
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 " +
"Transitional//EN\">\n";
String title = "Fonts Available on Server";
out.println(docType +
"<HTML>\n" +
"<HEAD><TITLE>" + title + "</TITLE></HEAD>\n" +
"<BODY BGCOLOR=\"#FDF5E6\">\n" +
"<H1 ALIGN=CENTER>" + title + "</H1>\n" +
"<UL>");
String[] fontNames = MessageImage.getFontNames();
for(int i=0; i<fontNames.length; i++) {
out.println(" <LI>" + fontNames[i]);
}
out.println("</UL>\n" +
"</BODY></HTML>");
}
}
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