Question

I have a problem regarding my simple application I have 2 separate .JSP file let say register and login.jsp both have submit action and both this jsp share the same servlet let say usercontrol.servlet how can I call the action once the login button is clicked the same also with register.jsp if they sharecommon servlet?

here is my servlet code:

if(request.getParameter("register").equals("Register")){
            if(request.getParameter("first") == "" || request.getParameter("middle") == "" || request.getParameter("last") == "" || 
                    request.getParameter("loginid") == "" || request.getParameter("pass") == "" || request.getParameter("pass2")== ""){
                JOptionPane.showMessageDialog(null, "Cannot leave null value from one of the textfields");
                response.sendRedirect("AdminPage/Register.jsp");

            }
            //else if(request.getParameter("pass") != request.getParameter("pass2")){
                //JOptionPane.showMessageDialog(null, "Password Mismatch, Check you password and retype it correctly");
                //response.sendRedirect("AdminPage/Register.jsp");
            //}
            else{
                RegisterUser(request, response);
            }
    }

    else if(request.getParameter("login").equals("Login")){
        if(request.getParameter("username") == ""){
            JOptionPane.showMessageDialog(null, "Username is required");
            response.sendRedirect("AdminPage/Login.jsp");
        }
        else if(request.getParameter("password") == ""){
            JOptionPane.showMessageDialog(null, "Password is required");
            response.sendRedirect("AdminPage/Login.jsp");
        }
        else if(request.getParameter("username") == "" || request.getParameter("password") == ""){
            JOptionPane.showMessageDialog(null, "Password/Username is required");
            response.sendRedirect("AdminPage/Login.jsp");
        }
        else{
            LoginUser(response, request);
        }   
    }

I’m integrating my application with hibernate.

this are my jsp submit buttons I did not include the whole forms I just include the submit button.

Login.jsp

<input type="submit" name="login" value="Login" />

Register.jsp

<input type="submit" name="register" value="Register"/>

My question is everytime I run the application it always does all the action in the if..else statement is there any other ways to fix this?

Answer 1

In your jsp you should have submit button as

for login.jsp

<input type="submit" name="login" value="Login"/>

for register.jsp

<input type="submit" name="register" value="Register"/>

Now in servlet you can check like

if(request.getParameter("login") != null) {
  // request is comming from login jsp
  // do validation, perform actual transaction 
} else if(request.getParameter("register") != null) {
  // request is comming from register jsp
  // do validation, perform actual transaction 
}