Can I set null as the default value for a @Value in Spring?

Question

I\'m currently using the @Value Spring 3.1.x annotation like this:

@Value(\"${stuff.value:}\")
private String value;

This puts an empty Str

Answer 1

You must set the nullValue of the PropertyPlaceholderConfigurer. For the example I'm using the string @null but you can also use the empty string as nullValue.

Now you can use the string @null to represent the null value

@Value("${stuff.value:@null}")
private String value;

Please note: The context name space doesn't support the null value at the moment. You can't use

Tested with Spring 3.1.1