I have a configuration class named CommonConfig that has been working fine so far…
@Data
@Component
@ConfigurationProperties(prefix = “my")
public class CommonConfig {
private String foo;
private String bar;
private SubA subA;
@Data
public static class SubA {
private String baz;
private SubB subB;
@Data
public static class SubB {
private String qux;
}
}
}
And the Yaml property file to go with that:
my.foo: a
my.bar: b
my.sub-a.baz: c
my.sub-a.sub-b.qux: d
My problem started when I wanted to get a map into SubB:
my:
foo: a
bar: b
sub-a:
baz: c
sub-b:
qux: d
map:
number-one: 1
number-two: 2
number-three: 3
I tried adding a simple map declaration inside my SubB class:
...
@Data
public static class SubB {
private String qux;
private Map<String, Integer> map = new HashMap<>();
}
When I run this though, all the other properties are in the config, but the map is empty. I also tried not initializing the map, but it stays null.
My @SpringBootApplication class has previously been working fine with just that one annotation on it. Based on some other StackOverflow questions, I tried adding @EnableConfigurationProperties, but it made no difference.
