I\'m setting my properties in app-servlet.xml with a bean like this:
In context just do this:
for creating Properties bean(same as @nkjava.blogspot.com in his answer). But this is not all work need todo.
Now you need to expose this bean to JSP. There are few way to do this, depends on type of view resolver. There is solution for InternalResourceViewResolver - you need to set "exposeContextBeansAsAttributes" to true and populate "exposedContextBeanNames" with list of required beans.
For tiles also are solution.
Than you can simply use this bean in your JSP. Via EL for example:
${propertyConfigurer['my.string.from.prop.file']}