Yes, see this question: Java get referer URI?
You can check the referer header in the request to make sure they are coming from one of your other servlets.
문제
Say for example I have a servlet named FooServlet, mapped to /foo.
There are two other servlets named BarServlet and CarServlet, mapepd to /bar and /car, respectively.
Now, if a user does a direct access to www.example.com/foo, they should be rejected. BUT if the request comes from a forward on /bar or /car, I will allow access to /foo.
Is this possible?
해결책
Yes, see this question: Java get referer URI?
You can check the referer header in the request to make sure they are coming from one of your other servlets.
다른 팁
You can use the request object to decide. For ex :
Use request.getContextPath()
to fetch the "/foo", "/bar" or "/car" and decide whether to allow the access or not.