SpringBoot项目读取配置文件信息

user:
 name: zhangsan
 sex: 男
 homeUrl: www.xxx.com

@Component
@Data
@ConfigurationProperties(prefix = "user")
public class User {
  private String name;
  private String sex;
  private String homeUrl;
}

jdbc:
 account: zhangsan
 pwd: 123456

@Component
@Data
@PropertySource(value = {"classpath:jdbc.properties"})
@ConfigurationProperties(prefix = "jdbc")
public class JdbcCfg {
  private String account;
  private String pwd;

  public void connectDb() {
    System.out.println("Database has connected, jdbc account is "
      + account + ", password is " + pwd);
  }
}

local:
  ip:
    addr: 192.168.137.220-yml

@Value("${local.ip.addr}")
String addr;
//这里可以设置默认值，如果没有改配置项，给改配置项添加默认值
@Value("${local.ip.port:9000}")
String port;
@Value("${user.dir}")
String userDir;

//这玩意可以定位读取哪个文件

@PropertySource(value = {"classpath:jdbc.properties"})

ClassPathResource resource = new ClassPathResource("application.properties");  
try {    
 Properties properties = PropertiesLoaderUtils.loadProperties(resource);   
    String account = properties.getProperty("jdbc.account");        
} catch (IOException e) {    
 …… 
}