#5 Passing argument in Spring MVC

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This tutorial is next step of my previous tutorial.

In this tutorial we will simply create:

  1. One login form.
  2. One success page
  3. One failure page
  4. Controller for redirection

1. Lets start with Login form as given below:


Please note that in form I have defined action as login_authenticate. This will be the REST api name which we will require to develop. Once login will press it will search for login_authenticate api.

2. Create Error page as below:


3.Create Welcome page as below:


Please note that I have used ${name}. It will pick value set via ModelMap ( see login_authenticate api below in blog.)


4. Create login api in ModelController to display login page:


5. Now create login_authenticate api which will be called for authentication. Please note that in below api we added some constant username/password for authentication. You can use your Db for the same:


In above api I just read value of JSP email and password field. After value is read i verify them with some values ( it can be your custom logic ). Based of result we redirect to welcome OR error page.

While redirecting to Welcome page I just set email in ModelMap that I can read back to welcome page and can display in UI.

Please note that if we write " redirect:<api name>" then we must write related api as well in the controller. So we have to write welcome and error api as given below:



By using redirect, we can update URL in browser as required.


So here are the final outputs sequently:






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