springcloud全家桶個人博客系統（三）用戶消費組件ConsumerFeign

一、簡介

本組件提供消費者端的負載均衡。

二、pom文件

    <dependencies>
        <dependency>
            <groupId>com.sustly</groupId>
            <artifactId>blog_api</artifactId>
            <version>${project.version}</version>
        </dependency>
        <dependency>
            <groupId>net.java.dev.jna</groupId>
            <artifactId>jna</artifactId>
            <version>4.1.0</version>
        </dependency>
        <!-- actuator監控信息完善 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!-- 將微服務provider註冊進eureka -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <!--負載均衡-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-ribbon</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>springloaded</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-feign</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

三、主配置類

@SpringBootApplication
@EnableEurekaClient
@EnableFeignClients(basePackages = {"com.sustly"})
public class BlogConsumerFeign {
    public static void main(String[] args) {
        SpringApplication.run(BlogConsumerFeign.class, args);
    }
}

四、application.properties

server.port=9001

spring.application.name=blog-consumer-feign

eureka.client.register-with-eureka=true
eureka.client.service-url.defaultZone=http://localhost:7001/eureka/
feign.hystrix.enabled=true

eureka.instance.instance-id=blog-consumer-feign
eureka.instance.prefer-ip-address=true

info.app.name=blog-consumer-feign
info.company.name=www.sustly.xyz
info.build.artifactId=${project.artifactId}
info.build.version=${project.version}

五、FeignConfig

@Configuration
public class FeignConfig {
    @Bean
    @LoadBalanced
    public RestTemplate getRestTemplate(){
        return new RestTemplate();
    }

    @Bean
    public IRule myRule(){
        //循環算法 默認
        return new RoundRobinRule();
    }
}

注意：該配置類必須配置，負載均衡才能起效果。 

五、controller

@RestController
public class ConsumerAdminController {
    private final UserClientService userService;

    @Autowired
    public ConsumerAdminController(UserClientService userService) {
        this.userService = userService;
    }


    @PostMapping("/register")
    public ResponseMsg register(@RequestBody User user){
        return userService.register(user);
    }

    @PostMapping("/login")
    public ResponseMsg login(@RequestBody User user){
        return userService.login(user);
    }
}

本controller中注入的service是上一篇文章中的。 

六、我的GitHub地址

https://github.com/sustly/blog_vue_server

注意：master分支纔是springcloud版本