springboot 将配置文件中的配置读取为properties配置类

 

1、确保依赖

　　

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<dependency>            <groupId> org.springframework.boot </groupId>            <artifactId> spring-boot-configuration-processor </artifactId>            <optional> true </optional>        </dependency>

　　

2、配置类编写，注意注解

　　

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package com.detech.qydxxpt;   import lombok.Data; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component;   /**  * @author YunguiZheng  */ @ConfigurationProperties(prefix = SmsProperties.PREFIX) @Data public class SmsProperties {       public static final String PREFIX ="sms" ;     /**      * 服务地址      */     public  String url ;     /**      * 用户名      */     public  String username;     /**      * 密码      */     public  String password ;     /**      * 固定字符串      */     public  String key ;     /**      * 接入KEY      */       public  String jrKey ;     /**      * 业务代码      */       public  String ywdm ;   }

　3、重要：在启动类上打上注解

@EnableConfigurationProperties(SmsProperties.class)　　　

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package com.dflzm.user;   import com.detech.qydxxpt.SmsProperties; import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.context.properties.EnableConfigurationProperties; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; import org.springframework.cloud.openfeign.EnableFeignClients;     @SpringBootApplication @EnableConfigurationProperties(SmsProperties.class) public class ApiUserCenterApplication {       public static void main(String[] args) {         SpringApplication.run(ApiUserCenterApplication.class, args);     }   }

　4、配置文件yml格式如下

　　

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sms:   url: http://xxx.com   username: xxx   password: xxx   key: 6798FEB3-71E5-48B6-A49B-1E1F33BAA14B   jrKey: "0000088"   ywdm: xxx

　5、测试是否配置成功

　　

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package com.dflzm.user;   import com.detech.qydxxpt.SmsProperties; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.junit4.SpringRunner;   import javax.annotation.Resource;   @RunWith(SpringRunner.class) @SpringBootTest public class ApiUserCenterApplicationTests {       @Resource     SmsProperties smsProperties;       @Test     public void  contextLoads() {         System.err.println(smsProperties.toString());     }   }

　　输出：　　

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1 2	[2020-06-16 10:26:44] [INFO ][com.alibaba.nacos.client.naming:61]-- [LISTENER] adding DEFAULT_GROUP@@dflzm-backend-service with to listener map SmsProperties(url=http:xxx, username=xxx, password=xxx, key=6798FEB3-71E5-48B6-A49B-1E1F33BAA14B, jrKey=xxx, ywdm=xxx)

　　

 参考：

　　https://www.cnblogs.com/Guhongying/p/10848251.html