读取jar包属性文件

第一种，使用 ApplicationListener

/META-INF/spring.factories

org.springframework.context.ApplicationListener=LoadProperty

@Configuration
public class LoadProperty implements ApplicationListener<ApplicationEnvironmentPreparedEvent>, Ordered {
    public void postProcessEnvironment() {
        try {
            Enumeration<URL> urls = ClassLoader.getSystemResources("属性文件目录");
            while (urls.hasMoreElements()){
                URL url = urls.nextElement();
                UrlResource resource = new UrlResource(url);
                Properties properties = PropertiesLoaderUtils.loadProperties(resource);
                this.environment.getPropertySources().addLast(new PropertiesPropertySource(url.getPath(), properties));
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
    @Override
    public void onApplicationEvent(ApplicationEnvironmentPreparedEvent event) {
        environment  = event.getEnvironment();
        postProcessEnvironment();
    }

    ConfigurableEnvironment environment;

    @Override
    public int getOrder() {
        return -101;
    }

}

第二种：

使用用 EnvironmentPostProcessor

/META-INF/spring.factories

org.springframework.boot.env.EnvironmentPostProcessor=MyConfigure

@Configuration
public class MyConfigure implements EnvironmentPostProcessor, Ordered {


    @Override
    public void postProcessEnvironment(ConfigurableEnvironment environment, SpringApplication application) {
        
        Properties properties = PropertiesLoaderUtils.loadProperties(resource);
        environment.getPropertySources().addLast(new PropertiesPropertySource("name", properties));
    }

    @Override
    public int getOrder() {
        return -100;
    }

}