@ConfigurationProperties 注解 可以直接自动从Springboot的配置文件如:application.yml 或application.properties中读取配置到java类
举例配置文件中有这样一个节点:
jwt:
secretKey: wh445306
accessTokenExpireTime: 90000
refreshTokenExpireTime: 1800000
refreshTokenExpireAppTime: 160000
issuer: wh445306
再定义一个这样的类
@Configuration
@ConfigurationProperties(prefix = "jwt")
@Data
public class TokenSettings {
private String secretKey;
private Duration accessTokenExpireTime;
private Duration refreshTokenExpireTime;
private Duration refreshTokenExpireAppTime;
private String issuer;
}
直接就可以使用了,程序跑起来。类里面的成员就已经被赋值为配置文件内容了。@Data 注解可以免去get,set方法