autowire boolean primitive from properties file

Question

Hi I want to autowire boolean value from properties file have referred following link with maps url Spring properties (property-placeholder) autowiring

but I want to auto wire a boolean property, also have referred question Spring Autowire primitive boolean Spring Autowire primitive boolean but that was for bean value and in my case I want to do the same using property value which is dot separated.

${does.it.allow} // which fails and gives String cannot be cast to boolean #{does.it.allow} // this gives no bean/property defined with name does but I have the correct property file and it proves that container is able to load it because of first error.

Answer 1

It doesn't work for me with primitive boolean. But it does with Boolean type.

This is my spring configuration declaration of the properties file:

<context:property-placeholder location="classpath:path/to/file/configuracion.properties" />

This is what i have in my properties file:

my.property=false

And this is my successful service class:

...
@Service
public class MyServiceImpl implements MyService{
...
    @Value("${my.property}")
    private Boolean nameOfProperty;
...

Answer 2

At least from Spring 5 (I didn't test previous versions), you can autowire boolean primitive.

In application properties:

my.property=true

In your class:

@Value("${my.property}")
private boolean myProperty;