springboot 动态读取配置文件

痛定思痛。 2022-11-17 13:47 184阅读 0赞

import org.springframework.boot.SpringApplication;
    import org.springframework.boot.env.EnvironmentPostProcessor;
    import org.springframework.core.env.ConfigurableEnvironment;
    import org.springframework.core.env.PropertiesPropertySource;
    import org.springframework.core.io.support.PropertiesLoaderUtils;
    
    import java.util.Properties;
    
    public class DynamicEnvironmentPostProcessor implements EnvironmentPostProcessor {
    
        @Override
        public void postProcessEnvironment(ConfigurableEnvironment environment, SpringApplication application) {
            try {
                String name = environment.getProperty("spring.profiles.active", "test");
                Properties properties = PropertiesLoaderUtils.loadAllProperties(name + "/test.properties");
                PropertiesPropertySource propertySource = new PropertiesPropertySource("dynamic", properties);
                environment.getPropertySources().addLast(propertySource);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
    
        }
    }

import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.context.annotation.Import;
    
    @SpringBootApplication
    //@Import(DynamicEnvironmentPostProcessor.class)
    public class DemoApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(DemoApplication.class, args);
        }
    
    }

import org.springframework.beans.factory.annotation.Value;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    
    @RestController
    public class TestController {
    
        @Value("${test.name}")
        private String name;
    
        @GetMapping("test")
        public String hello() {
            return name;
        }
    }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JlaV9mYW5nX2R1X2xhbmc_size_16_color_FFFFFF_t_70][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JlaV9mYW5nX2R1X2xhbmc_size_16_color_FFFFFF_t_70]: /images/20221022/fe040653429c48b78869a815abc19248.png