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Showing posts from February, 2009

Spring's form tags: make sure you set the action

A colleague and I found a problem recently where if you specify a parameter on the URL which takes you to a Spring-poweredform, and then submit that form you end up with multiple values for the same field item in the controller.

Loads the product details form with serial number 12345A and displays the product details
User enters a different serial number 98765Z in the serialNumber input box and clicks "Get product details"
Application received a serialNumber parameter contain an array of Strings: \["12345A", "98765Z"\]Reason

If you use Spring's " tags but don't specify an action the taglib will create one for you in the resulting HTML. This will be the URL that you used to access your form, so if you pass a serialNumber in a GET request, the serialNumber will be part of the action URL as well as a field within your form - hence an array of serial numbers.


Another colleague (Richard

Pasting code snippets to your blog easily with FormatMySourceCode

When I was preparing my last blog post on disabling HTML elements (in JSPs) with JSTL's "c:if" I needed to change a lot of the JSP markup to prepare it for adding to my posting - the angled opening and closing tags were causing quite a problem.

I was about to painstakingly go through changing them all to their 'lt' and 'gt' XML entity equivalents and then remembered a site I bookmarked sometime ago:

It's a very handy webpage with a box to paste your code into, select a few options such as tab width and whether you want an embedded stylesheet and then click "Format Text". It promptly returns with your code (of any kind) converted into a web-friendly version which is perfect for pasting straight into your blog post.

It a great yet simple idea by Greg Houston and oh so very useful!

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