validate.java

网上银行EJB版本

package mypackage;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.IOException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import javax.naming.NamingException;

public class Validate extends HttpServlet 
{
  private static final String CONTENT_TYPE = "text/html; charset=GBK";

  public void init(ServletConfig config) throws ServletException
  {
    super.init(config);
  }

  public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
  {
    response.setContentType(CONTENT_TYPE);
    String accounts = request.getParameter("accounts");
    String password = request.getParameter("password");
    String pwd = null;
    String miss = null;
    
    try{
      Context context = new InitialContext();
      TaskHome taskHome = (TaskHome)PortableRemoteObject.narrow(context.lookup("Task"), TaskHome.class);
      Task task;
      task = taskHome.create();
      pwd = task.queryPassword(accounts);
      miss = task.queryMiss(accounts);
    }
    catch(Throwable ex){
      ex.printStackTrace();
    }    
    
    if(password.compareTo(pwd) == 0 && miss.compareTo("0") == 0){
      request.getSession().setAttribute("accounts", accounts);
      request.getSession().setAttribute("chn", new String("您的帐号是"));
      request.getSession().getServletContext().getRequestDispatcher("/index.jsp").forward(request,response);
    }
    else
      request.getSession().getServletContext().getRequestDispatcher("/loginfail.jsp").forward(request,response);
  }
}