Head First Servlets and JSP, 2nd Edition

Memorizing the <mime-mapping> DD tag

You can configure a mapping between an extension and a mime type in the DD. This will probably be the easiest tag to remember, because it just makes sense—you map between an extension and a mime-type, and guess what? In a rare moment of simplicity and clarity, they named the tag sub-elements “extension” and “mime-type”. That means you have to remember only one thing—that the tag elements are named for exactly what they are!

Unless you start thinking of it as “file-type” and “content-type”. But no, you won’t do that. You’ll memorize it just like this.

Declaring a <mime-mapping>

Note

Don’t include the “.” in the extension!

It’s just the characters that make up the extension, not the “.” that separates the file name from the extension.

Note

It’s not <file-type> and <content-type>!

Burn it in—<extension> and <mime-type>.

<extension> and <mime-type>

<extension> and <mime-type>

<extension> and <mime-type>

<extension> and <mime-type>

Sharpen your pencil

Where things go

Fill in this table with explicit notes on where in the web app the given resource must be placed. We did the first one for you. Turn the page for the answers.

Resource type	Deployment location
Deployment Descriptor (web.xml)	Directly inside WEB-INF (which is directly inside the root of the web app).
Tag Files (.tag or .tagx)
HTML and JSPs (That you want to be directly accessible.)
HTML and JSPs (That you want ...