package javajaxb;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;
// Servlet imports
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
// Movie database generated classes
import javajaxb.generated.movies.*;
public class MoviesServlet extends HttpServlet {
/** The Movies database object */
private Movies movies = null;
/** Any error that occurred. */
private String errorMessage = null;
/** The XML document storing the movie database */
private static final String MOVIES_XML_DOCUMENT =
"/dev/javajaxb/ch04/src/xml/movies.xml";
public void init(ServletConfig config) throws ServletException {
super.init(config);
// Load the database using JAXB
try {
// Load the XML
File xmlFile = new File(MOVIES_XML_DOCUMENT);
FileInputStream inputStream = new FileInputStream(xmlFile);
// Unmarshal
movies = Movies.unmarshal(inputStream);
} catch (Exception e) {
errorMessage = e.getMessage();
}
}
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws IOException, ServletException {
// Handle any error conditions that might have occurred.
if (movies == null) {
error(res);
}
// Get output stream
PrintWriter out = res.getWriter();
res.setContentType("text/html");
// Write out movie database
out.println("<HTML><HEAD><TITLE>Movie Database</TITLE></HEAD>");
out.println("<BODY>");
out.println("<H2 ALIGN='center'>Movie Database</H2>");
List movieList = movies.getMovie();
for (Iterator i = movieList.iterator(); i.hasNext(); ) {
Movie movie = (Movie)i.next();
// Title
out.print("<B><FONT SIZE='+1'>");
out.print(movie.getTitle());
out.println("</FONT></B><BR />");
// Director
String director = movie.getDirector();
if (director != null) {
out.print("Director: ");
out.print(director);
out.println("<BR />");
}
// Producer
out.println("Producers:<BR /><UL>");
List producerList = movie.getProducer();
for (Iterator j = producerList.iterator(); j.hasNext(); ) {
out.print("<LI>");
out.print((String)j.next());
out.println("</LI>");
}
out.println("</UL>");
// Cast
out.println("Starring:<BR /><UL>");
Cast cast = movie.getCast();
List actorList = cast.getActor();
for (Iterator j = actorList.iterator(); j.hasNext(); ) {
Actor actor = (Actor)j.next();
out.print("<LI>");
out.print(actor.getContent());
if (actor.getHeadliner().equalsIgnoreCase("true")) {
out.print(" (Headliner)");
}
out.println("</LI>");
}
out.println("</UL>");
out.println("<HR WIDTH='80%' />");
}
out.println("</BODY></HTML>");
out.close();
}
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws IOException, ServletException {
// Get action paramater; default is "list"
String[] actionValues = req.getParameterValues("action");
String action = null;
if ((actionValues == null) || (actionValues[0] == null)) {
action = "list";
} else {
action = actionValues[0];
}
// Handle different actions
PrintWriter out = res.getWriter();
res.setContentType("text/plain");
/* **** List current movies **** */
if (action.equalsIgnoreCase("list")) {
out.write(" ***** Movies Database *****\n\n");
// Print out each movie
List movieList = movies.getMovie();
for (Iterator i = movieList.iterator(); i.hasNext(); ) {
Movie movie = (Movie)i.next();
// Title
out.print(" Movie: ");
out.println(movie.getTitle());
// Director
String director = movie.getDirector();
if (director != null) {
out.print(" Director: ");
out.println(director);
out.println();
}
// Producer
out.println(" Producers:");
List producerList = movie.getProducer();
for (Iterator j = producerList.iterator(); j.hasNext(); ) {
out.print(" * ");
out.print((String)j.next());
out.println();
}
out.println();
// Cast
out.println(" Starring:");
Cast cast = movie.getCast();
List actorList = cast.getActor();
for (Iterator j = actorList.iterator(); j.hasNext(); ) {
Actor actor = (Actor)j.next();
out.print(" * ");
out.print(actor.getContent());
if (actor.getHeadliner().equalsIgnoreCase("true")) {
out.print(" (Headliner)");
}
out.println();
}
out.println(" -------------------------------- ");
}
} else {
out.write("The action supplied, '");
out.write(action);
out.write("', is not currently supported.\n");
}
out.close();
}
private void error(HttpServletResponse res) throws IOException {
PrintWriter out = res.getWriter();
res.setContentType("text/plain");
out.write(" ************* ERROR OCCURRED ***************\n\n");
out.write("Error: " + errorMessage + "\n");
out.close();
}
} |
