package javacodebook.server.servletbasics.pathinfo;
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class CatalogServlet extends HttpServlet {
private Hashtable catalog;
public void init(ServletConfig config)
throws ServletException {
catalog = new Hashtable();
catalog.put("P001", new Book("Das Java Codebook",
"Donnermeyer/Rusch/Brodersen/Skulschus/Wiederstein",
"------", "Addison-Wesley"));
catalog.put("P002", new Book("Das Excel-VBA Codebook",
"Körn/Weber", "3-8273-1979-X", "Addison-Wesley"));
catalog.put("P003", new Book("Das Acces-VBA Codebook",
"Grießhammer/Michaels/Zerbe", "3-8273-1953-6", "Addison-Wesley"));
}
protected void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, java.io.IOException {
res.setContentType("text/html");
java.io.PrintWriter out = res.getWriter();
out.println("");
out.println("");
if(req.getPathInfo() == null)
showCatalog(out);
else {
String pathInfo = req.getPathInfo();
String prodNr = pathInfo.substring(pathInfo.lastIndexOf("/") + 1,
pathInfo.lastIndexOf("."));
Book book = (Book)catalog.get(prodNr);
if(book != null) {
out.println("" + book.getTitle() + "
");
out.println(book.getAuthors() + "
");
out.println("ISBN " + book.getIsbn() + "
");
out.println(book.getPublisher() + "
");
}
else {
out.println("Kein Buch mit dieser Produktnummer gefunden");
}
}
out.println("");
out.println("");
}
private void showCatalog(PrintWriter out) {
out.println("");
out.println("");
out.println("| Produktnummer | ");
out.println("Bezeichnung | ");
out.println("
");
for(Enumeration keys = catalog.keys(); keys.hasMoreElements(); ) {
String prodNr = (String)keys.nextElement();
Book book = (Book)catalog.get(prodNr);
out.println("");
out.println("| "
+ prodNr + " | ");
out.println("" + book.getTitle() + " | ");
out.println("
");
}
out.println("
");
}
}
--- Neue Klasse ---
package javacodebook.server.servletbasics.pathinfo;
public class Book
{
private String title;
private String authors;
private String isbn;
private String publisher;
public Book(String title, String authors, String isbn, String publisher)
{
this.title = title;
this.authors = authors;
this.isbn = isbn;
this.publisher = publisher;
}
public String getTitle() {
return title;
}
public String getAuthors() {
return authors;
}
public String getIsbn() {
return isbn;
}
public String getPublisher() {
return publisher;
}
}
--- Auszug aus web.xml ---
catalog
javacodebook.server.servletbasics.pathinfo.CatalogServlet
catalog
/catalog/*