如何通过 application.properties 注入日期值

Question

Is there a way to inject Date values by application.properties in Spring-Boot projects. Like this.

@Component
@ConfigurationProperties(prefix = "foo")
public Class FooConfiguration {
    private Date startTime;
    //getter and setter
}
foo.startTime="2019-03-18 00:00:00"

Answer 1

You can configure a custom converter for configuration properties class like follow:

DateConverter.java

@Component
@ConfigurationPropertiesBinding
public class DateConverter implements Converter<String, Date> {
    @Override
    public Date convert(String source) {
        if (source == null) {
            return null;
        }
        return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(source);
    }
}

application.properties

foo.start-time=2019-03-18 00:00:00