如何从 application.yml 中读取 Long 数字

Question

The application.yml file has a Long type setting:

producer.init-delay: 15000

It is used in this method:

@Scheduled(fixedRate = 25000, initialDelay = "#{new Long('${producer.init-delay}')}")
public produce() {}

Take an example from the question: Spring @Value TypeMismatchException:...

But I have this code gives an error:

Incompatible types. Found: 'java.lang.String', required: 'long'

Answer 1

According to the javadoc of the @Scheduled , initialDelay must be of type long and you have it as String .

Every long argument in @Scheduled has a string alternative. Use them:

@Scheduled(fixedRate = 25000, initialDelayString = "${producer.init-delay}")
public produce() {}