A Fix to Our Spring-MVC Course

Just a quick blog post to alert that there is an error in one of the config files in the Spring-MVC course. I’m uploading a fixed version now, so if you’re a user of the course, please download the new “Practicals and Code” folder, or follow these instructions:

If you start your project from the “Starting Code” folder, our web.xml contains the following:

[[code]]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[[/code]]

However, our Spring XML config file is called “Dispatcher-servlet.xml”.

By default, Spring finds it’s config file in a web app by taking the servlet name and appending “-servlet.xml” to the end – it then looks for a matching file in /WEB-INF.

If you downloaded the course before the date of this post, please rename the servlet name to Dispatcher (it appears twice in web.xml).

So, your web.xml file should be (in full):

[[code]]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[[/code]]

Many apologies for the inconvenience this has caused – it was entirely my fault and happened because I changed my naming convention between chapters.

Thanks to David Wubshet and Benjamin Quarless amongst others for flagging up this problem.

3 thoughts on “A Fix to Our Spring-MVC Course”

  1. Hi Richard,

    I acquired all your courses recently. I was very satisfied and learned a lot from the Spring Fundamentals one. I am having problems with the MVC one. I am getting the following error:

    java.lang.IllegalStateException: Cannot map handler [/viewAllBooks.do] to URL path [/viewAllBooks]: There is already handler [com.virtualpairprogrammers.control.ViewAllBooksController@5106def2] mapped.

    Looking at the full stack trace there may be something happening with the Autowiring behavior of Spring. How can I get help on this?

    Thanks,

    – Alberto.

  2. Hi Alberto,

    Best thing to do is to send a support request in through the "contact" form on the VirtualPairProgrammers.com website. Then we can have a good look at your code. Someone should answer as early as possible on Monday.

    I'm sure it will be an easy fix!

    Cheers,
    Richard.

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