package antipatterns;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.naming.*;
import javax.naming.directory.*;
import java.util.*;
public class MagicServlet extends HttpServlet {
private DirContext peopleContext;
public void init(ServletConfig config) throws ServletException {
super.init(config);
Properties env = new Properties();
env.put(Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "ldap://localhost/o=jndiTest");
env.put(Context.SECURITY_PRINCIPAL, "cn=Manager, o=jndiTest");
env.put(Context.SECURITY_CREDENTIALS, "secret");
try {
DirContext initalContext = new InitialDirContext(env);
peopleContext = (DirContext)initalContext.lookup("ou=people");
} catch (NamingException ne) {
ne.printStackTrace();
throw new ServletException("Error inializing LDAP", ne);
}
}
public void destroy() {
try {
peopleContext.close();
} catch(NamingException ne) {
ne.printStackTrace();
}
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
java.io.PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet</title>");
out.println("</head>");
out.println("<body>");
out.println("<table>");
try {
NamingEnumeration people = peopleContext.list("");
while(people.hasMore()) {
NameClassPair personName = (NameClassPair)people.next();
Attributes personAttrs =
peopleContext.getAttributes(personName.getName());
Attribute cn = personAttrs.get("cn");
Attribute sn = personAttrs.get("sn");
Attribute phone = personAttrs.get("telephoneNumber");
out.println("<tr><td>" + cn.get() + " " + sn.get() + "</td>" +
"<td>" + phone.get() + "</td></tr>");
}
} catch(Exception ex) {
out.println("Error " + ex + " getting data!");
}
out.println("</table>");
out.println("</body>");
out.println("</html>");
}
}
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