@EnableEurekaServer
@SpringBootApplication
public class EurekaApplication {
 
 public static void main(String[] args) {
  SpringApplication.run(EurekaApplication.class, args);
 }
 
}

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
 
 @Override
 protected void configure(HttpSecurity http) throws Exception {
  super.configure(http);
  http.csrf().disable().httpBasic();
 }
}

server:
 port: 7001
spring:
 application:
 name: eureka
 security:
 user:
  name: admin
  password: xxxxxxxxxx
eureka:
 client:
 fetch-registry: false
 register-with-eureka: false
 service-url:
  defaultZone: http://admin:Xk38CNHigBP5jK75@localhost:5001/eureka
 instance:
 hostname: localhost
 prefer-ip-address: true
logging:
 config: classpath:logback.xml
 level:
 root: info

 <dependencies>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-security</artifactId>
  </dependency>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <dependency>
   <groupId>org.springframework.cloud</groupId>
   <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
  </dependency>
 
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-test</artifactId>
   <scope>test</scope>
   <exclusions>
    <exclusion>
     <groupId>org.junit.vintage</groupId>
     <artifactId>junit-vintage-engine</artifactId>
    </exclusion>
   </exclusions>
  </dependency>
  <dependency>
   <groupId>org.springframework.security</groupId>
   <artifactId>spring-security-test</artifactId>
   <scope>test</scope>
  </dependency>
 </dependencies>

eureka:
 instance:
 hostname: ${spring.cloud.client.ip-address}
 prefer-ip-address: true
 instance-id: ${eureka.instance.hostname}:${server.port}
 //與server一致
 client:
 security:
  basic:
  user: admin
  password: xxxxxxxxxxx
 service-url:
  defaultZone: http://${eureka.client.security.basic.user}:${eureka.client.security.basic.password}@localhost:7001/eureka