java – 从json文件加载spring-boot属性

@EnableAutoConfiguration
@Configuration
@PropertySource(value = { "classpath:/properties/config.default.json" },factory=SpringBootTest.JsonLoader.class )
public class SpringBootTest extends SpringBootServletInitializer {

    @Bean
    public Object test(Environment e) {
        System.out.println(e.getProperty("test"));
        return new Object();
    }


    public static void main(String[] args) {
        SpringApplication.run(SpringBootTest.class);
    }

    public static class JsonLoader implements PropertySourceFactory {

        @Override
        public org.springframework.core.env.PropertySource<?> createPropertySource(String name,EncodedResource resource) throws IOException {
            Map readValue = new ObjectMapper().readValue(resource.getInputStream(),Map.class);
            return new MapPropertySource("json-source",readValue);
        }

    }
}

定义您自己的PropertySourceFactory并通过@PropertySource注释将其挂钩.阅读资源,设置属性,在任何地方使用它们.

唯一的问题是,如何翻译嵌套属性. Spring的方法(顺便说一下你可以将Json定义为属性的变量,参见：https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-external-config.html)
是这样翻译嵌套属性：

{"test": { "test2" : "x" } }

变为：

test.test2.x

希望有所帮助,

阿图尔