How to check user password in ldap whith java with given LdapContext?

Question

I do have a web-application, where users must log in. The password is stored in a LDAP server. All information about the LDAP server are stored in the application server (gl

Answer 1

i have done same in my application. following is the which might be useful to you.

    package com.agileinfotech.bsviewer.servlet;

    import java.io.IOException;
    import javax.servlet.RequestDispatcher;
    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import javax.naming.*;
    import javax.naming.directory.*;
    import java.util.Hashtable;

    public class Login extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {

    public Login() {
    super();
    }

    protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    final String SUCCESS = "loin.jsp";
    final String FAILURE = "Failure.html";
    String strUrl = "login.html";
    String username = request.getParameter("username");
    String password = request.getParameter("password");



    Hashtable env = new Hashtable(11);

    boolean b = false;

    env.put(Context.INITIAL_CONTEXT_FACTORY,
    "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:10389");
    env.put(Context.SECURITY_AUTHENTICATION, "simple");
    env.put(Context.SECURITY_PRINCIPAL, "uid="+ username +",ou=system");
    env.put(Context.SECURITY_CREDENTIALS, password);

    try {
    // Create initial context
    DirContext ctx = new InitialDirContext(env);

    // Close the context when we're done
    b = true;
    ctx.close();

    } catch (NamingException e) {
    b = false;
    }finally{
    if(b){
    System.out.print("Success");
    strUrl = SUCCESS;
    }else{
    System.out.print("Failure");
    strUrl = FAILURE;
    }
    }
    RequestDispatcher rd = request.getRequestDispatcher(strUrl);
    rd.forward(request, response);

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    processRequest(request,response);
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    processRequest(request,response);
    } 
    }