springboot配置文件参数映射到具体类

快来打我* 2023-03-01 14:00 45阅读 0赞

说明：该初始化可直接在static方法中获取参数

1、添加依赖

annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'

2、application.yml中添加配置参数

## JWT 密钥 - start
    jwt:
      secret-key: 3453453453435435fg)
      access-token-expire-time: PT2H
      refresh-token-expire-time: PT8H
      refresh-token-expire-app-time: P7D
      issuer: zz.com
    ## JWT 密钥 - end

3、创建类

@Configuration
    @ConfigurationProperties(prefix = "jwt")
    public class TokenSettings {
    
        private String secretKey;
        private Duration accessTokenExpireTime;
        private Duration refreshTokenExpireTime;
        private Duration refreshTokenExpireAppTime;
        private String  issuer;
    
        public TokenSettings() {
        }
    
        // get/get。。。
    }

4、初始化

@Component
    public class StaticInitializerUtil {
    
        private TokenSettings tokenSettings;
    
        public StaticInitializerUtil(TokenSettings tokenSettings) {
            JwtTokenUtil.setTokenSettings(tokenSettings);
        }
    
    }

5、调用，比如JwtTokenUtil静态方法中调用

public class JwtTokenUtil {
    
        private static final Logger log = LoggerFactory.getLogger(JwtTokenUtil.class);
    
        private static String secretKey;
        private static Duration accessTokenExpireTime;
        private static Duration refreshTokenExpireTime;
        private static Duration refreshTokenExpireAppTime;
        private static String  issuer;
    
        public static void setTokenSettings(TokenSettings tokenSettings){
            secretKey=tokenSettings.getSecretKey();
            accessTokenExpireTime=tokenSettings.getAccessTokenExpireTime();
            refreshTokenExpireTime=tokenSettings.getRefreshTokenExpireTime();
            refreshTokenExpireAppTime=tokenSettings.getRefreshTokenExpireAppTime();
            issuer=tokenSettings.getIssuer();
        }
    
        /**
         * 生成 access_token
         * @return       java.lang.String
         */
        public static String getAccessToken(String subject, Map<String,Object> claims){
            return generateToken(issuer,subject,claims,accessTokenExpireTime.toMillis(),secretKey);
        }
        
        public static String generateToken(String issuer, String subject,Map<String, Object> claims, long ttlMillis,String secret) {
    
            // 此处省略
        }
    }