springboot干货——（十七【二】）读取自定义properties文件

比眉伴天荒 2021-09-23 10:12 398阅读 0赞

**[springboot专栏汇总][springboot]**

## 1.目录结构 ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d3ZDExNTQ5NzgzNTI_size_16_color_FFFFFF_t_70][]

## 2.pom.xml ##

<dependencies>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter</artifactId>
    		</dependency>
    
    		<dependency>
    			<groupId>org.projectlombok</groupId>
    			<artifactId>lombok</artifactId>
    		</dependency>
    
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-test</artifactId>
    			<scope>test</scope>
    		</dependency>
    	</dependencies>

## 3.加载自定义properties文件 ##

import lombok.extern.slf4j.Slf4j;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.env.EnvironmentPostProcessor;
    import org.springframework.boot.env.PropertiesPropertySourceLoader;
    import org.springframework.core.env.ConfigurableEnvironment;
    import org.springframework.core.env.MutablePropertySources;
    import org.springframework.core.env.PropertySource;
    import org.springframework.core.io.ClassPathResource;
    import org.springframework.core.io.Resource;
    
    @Slf4j
    public class YapfEnvironmentPostProcessor implements EnvironmentPostProcessor {
        private PropertiesPropertySourceLoader loader = new PropertiesPropertySourceLoader();
        @Override
        public void postProcessEnvironment(ConfigurableEnvironment environment, SpringApplication application) {
            MutablePropertySources propertySources = environment.getPropertySources();
            Resource resource = new ClassPathResource("yapf.properties");
            try {
                PropertySource ps = loader.load("YetAnotherPropertiesFile", resource)
                        .get(0);
                propertySources.addFirst(ps);
            } catch (Exception e) {
                log.error("Exception!", e);
            }
        }
    }

## 4.自定义properties文件yapf.properties ##

geektime.greeting=hello

## 5.springboot主入口 ##

import lombok.extern.slf4j.Slf4j;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.boot.ApplicationArguments;
    import org.springframework.boot.ApplicationRunner;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    @SpringBootApplication
    @Slf4j
    public class PropertySourceDemoApplication implements ApplicationRunner {
    	@Value("${geektime.greeting}")
    	private String greeting;
    
    	public static void main(String[] args) {
    		SpringApplication.run(PropertySourceDemoApplication.class, args);
    	}
    
    	@Override
    	public void run(ApplicationArguments args) throws Exception {
    		log.info("{}", greeting);
    	}
    }

注：原文内容来源于丁雪丰

[springboot]: https://blog.csdn.net/gwd1154978352/article/details/80651332
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d3ZDExNTQ5NzgzNTI_size_16_color_FFFFFF_t_70]: /images/20210923/38f1cbd26eb646a9befa7c0bfffaee4e.png