how to encrypt/encode url parameters in jsp

Question

I want to encrypt a URL variable so that the user can\'t see or modify the information when it is passed in jsp.

This is an example URL:

localhost/somew         


        

Answer 1

Always use POST method.

And even in POST method, user can see the id and can change it in browser console network tab.So that, user can see other's email attachment since you mentioned in your comment like that.

So, try to set id in jsp session and get the id in the java servlet code. it is really good practice.