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Hot Deploy resource file in Spring.

The general way to read a Resource file in Spring is something like this
new ClassPathResource(pathToFile).getInputStream()

However, this will cache the contents of the file (stream) in the class loader. Although this is not a major problem, there may be cases where reading the file fresh everytime (Hot deployable file) is required.

That can be achieved with the following code
new FileInputStream(new ClassPathResource(templateFile)
                      .getFile().getAbsoluteFile());

This will gives cache free control on the file and its content.

(Important) Note:
* Doing the AbsoluteFile way, will always read the content of the file. So if it is being done on a High frequency, A Managed Caching layer must be considered
* AbsoluteFile call will NOT work for resource files inside jars, they have to be in classpath folders (e.g.WEB-INF/classes)

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