SpringBoot注解@ConfigurationProperties绑定配置文件application.yml，自动为类属性绑定配置值

实体：标注@Component和@ConfigurationProperties，prefix：前缀是site的配置自动绑定到类中的属性，如果不写@Component，则需要在主启动程序上面加@EnableConfigurationProperties(SiteInfo.class)

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package com.jay.SpringBootStudy8.utils; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component; @Component @ConfigurationProperties(prefix = "site") public class SiteInfo {     @Override     public String toString() {         return "SiteInfo{" +                 "domain='" + domain + '\'' +                 ", copyright='" + copyright + '\'' +                 '}';     }     private String domain;     private String copyright;       public String getDomain() {         return domain;     }       public void setDomain(String domain) {         this.domain = domain;     }     public String getCopyright() {         return copyright;     }       public void setCopyright(String copyright) {         this.copyright = copyright;     } }

 yml配置，properties是：site.domain=www.jay.com

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site:   domain: www.jay.com   copyright: xxx@v1.1.1

 使用

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@Autowired     private SiteInfo siteInfo;     @Test     public void test3(){         System.out.println(siteInfo);     }

　　结果输出就是SiteInfo{domain='www.jay.com', copyright='xxx@v1.1.1'}，属性值就自动绑定上了。