openfeign和dubbo远程调用

openfeign和dubbo远程调用

使用openfeign

消费端:

1.导入依赖

2.启动类加@EncableFeignClients注解(开启openfeign)

3.编写feign接口加上@FeignClient注解(绑定服务提供方)

4调用接口

  • 1.依赖

        
            
            
                org.springframework.cloud
                spring-cloud-starter-openfeign
            
            
            
                org.springframework.cloud
                spring-cloud-starter-netflix-hystrix
            
            
            
                org.springframework.cloud
                spring-cloud-starter-netflix-eureka-client
            
            
            
                com.atguigu.springcloud
                cloud-api-commons
                ${project.version}
            
            
            
                org.springframework.boot
                spring-boot-starter-web
            
            
                org.springframework.boot
                spring-boot-starter-actuator
            
            
            
                org.springframework.boot
                spring-boot-devtools
                runtime
                true
            
            
                org.projectlombok
                lombok
                true
            
            
                org.springframework.boot
                spring-boot-starter-test
                test
            
        
    
  • 2.主启动类添加注解

    @SpringBootApplication
    @EnableFeignClients
    @EnableHystrix
    public class OpenFeignApp
    {
        public static void main(String[] args)
        {
            SpringApplication.run(OrderHystrixMain80.class,args);
        }
    }
    
  • 3.feign接口

    @Component
    @FeignClient("SERVICE-PROVIDER")
    public interface ProductFeignService {
        /**
         * 编写技巧,直接把服务提供者那一端的控制器方法的两行拷贝过来,最后加一个分号就可以了,别的什么也不用动
         */
        //通过控制层url进行帮订。
        @RequestMapping("/provider/product/findAll")
        public List findAll();
    
        @RequestMapping("/provider/product/findByPid")
        public String findByPid(@RequestParam("pid") Integer pid);
    }
    
  • 4.另外的服务调用接口

    @RestController
    @Slf4j
    public class PaymentController {
    /**
    * 使用 Feign 方式调用
    */
    @Resource
    private ProductFeignService productFeignService; // 注入 service 中 通过 @FeignClient 定义好的接口

    @GetMapping("/feign/payment/get/{id}")
    public RespResult getPayment(@PathVariable("id") Integer id) {
        log.info("<<<<<<<<<<<  我是通过feign >>>>>>>>>>>>");
        return productFeignService.findByPid(id);
    }
    

    }

使用Dubbo远程调用

1.生产者消费者添加dubbo依赖

2.使用org.apache.dubbo.config.annotation.Service注解标记要远程引用的service

3.消费者使用@Refence注解注入Service

  • 1.生产者消费者添加dubbo依赖

    
            com.alibaba.cloud
            spring-cloud-starter-dubbo
        
    
  • 2.使用org.apache.dubbo.config.annotation.Service注解标记要远程引用的service

    //dubbo里的@Service注解
    import org.apache.dubbo.config.annotation.Service;
    
    @Service
    public class AppServiceImpl implements IAppService {
        @Autowired
        AppMapper appMapper;
    
    
        @Override
        public AppDTO createApp(AppDTO appDTO) throws BizException {
         
    
            return null;
        }
    
  • 3.消费者使用@Refence注解注入Service

    @Slf4j
    @RestController
    public class AppController {
    //远程调用
    @Reference
    IAppService appService;

    public AppDTO createApp(@RequestBody AppVo appVo){
    
        return appService.createApp(appDTO);
    }
    

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