Springboot中读取.yml文件

自定义配置文件application-dev.yml

 spring:
     dataresource:
         druid:
             driver-class-name: com.mysql.jdbc.Driver
             url: jdbc:mysql://127.0.0.1:3306/appcloud?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
             username: root
             password: root    

创建一个实体类 configYml

 @Component
 @PropertySource("classpath:application-dev.yml")//制定读取配置文件的路径
 @ConfigurationProperties(prefix = "spring.datasource.druid")//指定读取的前缀
 public class ConfigYml {
 　　
     @Value("${driver-class-name}")//配置文件中的命名为driver-class-name;java中不能命名不能有下划线。所以可以使用@Value注解获取值
     private String driver;
     private String url;
     private String username;
     private String password;

     @Override
     public String toString() {
         return "ConfigYml{" +
                 "driver='" + driver + '\'' +
                 ", url='" + url + '\'' +
                 ", username='" + username + '\'' +
                 ", password='" + password + '\'' +
                 '}';
     }

     public String getDriver() {
         return driver;
     }

     public void setDriver(String driver) {
         this.driver = driver;
     }

     public String getUrl() {
         return url;
     }

     public void setUrl(String url) {
         this.url = url;
     }

     public String getUsername() {
         return username;
     }

     public void setUsername(String username) {
         this.username = username;
     }

     public String getPassword() {
         return password;
     }

     public void setPassword(String password) {
         this.password = password;
     }

 }

 @Autowired
 private ConfigYml configYml;

直接调用configYml的get方法即可