How to create rating system in JSP?

I'm doing one litle project with JSP for topic Library. I want to create a rating system for books in library when end-user view detail of book and rating for this book. Can anyone give hints or tutorials how to go about this?

Solution

I'd suggest to use the jQuery Star Rating plugin for this. Check the demo page how it all look like. The JSP/HTML basically look like this (you only need to put the necessary JS/CSS/image files in the public webcontent). The magic is done by giving the radio buttons the class name star.

<!DOCTYPE html>
<html lang="en">
    <head>
        <title>Star rating demo</title>
        <link rel="stylesheet" href="jquery.rating.css">
        <script src="jquery.js"></script>
        <script src="jquery.rating.js"></script>
    </head>
    <body>
        <form>
            <input type="radio" name="rating" value="1" class="star">
            <input type="radio" name="rating" value="2" class="star">
            <input type="radio" name="rating" value="3" class="star">
            <input type="radio" name="rating" value="4" class="star">
            <input type="radio" name="rating" value="5" class="star">
        </form>
    </body>
</html>

In the server side you just use HttpServletRequest#getParameter() to obtain the rating value.

String rating = request.getParameter("rating");
// ...

With the above example, it'll return 1, 2, 3, 4 or 5.