SpringBoot @ConfigurationProperties注解的简单使用

@Target({ElementType.TYPE, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface ConfigurationProperties {
    @AliasFor("prefix")
    String value() default "";

    @AliasFor("value")
    String prefix() default "";

    boolean ignoreInvalidFields() default false;

    boolean ignoreUnknownFields() default true;
}

myConfigs:
  config1:
    field1: f1
    field2: f2
    field3: f3

@Component
@ConfigurationProperties("myConfigs.config1")
public class MyConfig1 {
    String field1;
    String field2;
    String field3;
}

@ConfigurationProperties(prefix="config.prefix", ignoreInvalidFields=true, ignoreUnknownFields=false)
public class MyConfig {
    // fields
}

@ConfigurationProperties("your.prefix")
public class YourConfig {
    private String field = "Default"
    // setter
}