spring boot yml语法 springboot中的yml怎么读取

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mob6454cc7b19b2 2023-07-31 16:31:27

文章标签 spring boot yml语法加载 spring html 文章分类 spring boot 后端开发

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根据以上博客，学习到的文件引入问题

1. ConfigurationProperties注解的locations属性在1.5.X以后没有了，不能指定locations来加载yml文件

2. PropertySource注解只支持yml文件加载，详细见官方文档： https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-external-config-yaml-shortcomings

3. Spring Framework有两个类加载YAML文件，YamlPropertiesFactoryBean和YamlMapFactoryBean

4. 可以通过PropertySourcePlaceholderConfigurer来加载yml文件，暴露yml文件到spring environment

// 加载YML格式自定义配置文件
     @Bean
     public static PropertySourcesPlaceholderConfigurer properties() {
         PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();
         YamlPropertiesFactoryBean yaml = new YamlPropertiesFactoryBean();
         yaml.setResources(new FileSystemResource("config.yml"));//File引入

//        yaml.setResources(new ClassPathResource("youryml.yml"));//class引入
         configurer.setProperties(yaml.getObject());
         return configurer;
     }

5. 可以直接通过@Value引入属性值注入Bean

@Component

@ConfigurationProperties(prefix = "prefix")

public class ConfigYML1 {
         // 以下属性可以直接获取
         private String name;
         private List<Map<String, String>> list = new ArrayList<>();
  
     @Value("${your.username}")
     private String username;
     

}

6. config.yml

prefix:
   name:
   list:
     - name: tech
       key: 123
       source: beijing
     - name: skill
       key: 987
       source: shanghai

---

your:
   username: test

---

list2:
   name: qwer
   url:

7. Question: