Idea writes Java code error on JSP page

Title, I used to myeclipse,eclipse, in the JSP write Java code are can, now I replaced the idea, but inexplicable error

And there are no code hints, such as this, although the operation can still run ... But in the case of obsessive-compulsive disorder, I can't bear it.

I've always thought that idea is not very supportive of this kind of writing (after all, MVC thought, in the JSP write Java is a bit of that ...) ) until today using idea to write the Servlet class also error. Just went to look for, found that the original can be configured, Tomcat's rack package dependency is not imported

And then it's OK, so if you restart idea, you can.

Now you can use idea to write Java code on a JSP page and have smart hints.

Idea writes Java code error on JSP page