June 20, 2006

Singleton in Spring

Today I found an error in my project related to the singleton in Spring.

A class Pager is a Spring bean injected to a controller by IoC container.
In one method of the controller, it use Pager.data variable to store submissions from a form.

If two threads send the request at the same time, then Pager.data was written twice. So potentially the controller will return wrong result for one form.


Hongfeng Sun : 20 Jun 2006 13:12 |  Tags:   |  Comments (0) |  Trackbacks (1) |  Report a problem

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  1. Singleton in Spring

    A spring bean default to be singleton. The following class is a Spring beanClass Transform{ private Map errors = new HashMap(); public void setErrors(final Map errors) { this.errors = errors; } public void transform(){ ...

    Oracle/Java/Others - 07 Nov 2006, 14:57

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