springcloud微服务学习笔记14：服务发现Discovery

springcloud微服务学习笔记目录：

Discovery功能：
对于注册进eureka里面的微服务，可以通过服务发现来获得服务的信息
1.修改cloud-provider-payment8001的controller

@RestController
@Slf4j
public class PaymentController {

    @Resource
    private PaymentService paymentService;

    @Resource
    private DiscoveryClient discoveryClient;

    @Value("${server.port}")
    private String serverPort;

    @PostMapping("/payment/creat")
    public CommonResult<Payment> create(@RequestBody Payment payment){

        int result=paymentService.create(payment);
        log.info("******插入结果"+result);
        if (result>0){
            return new CommonResult(200,"success",result);
        }else {
            return new CommonResult(400,"fail",null);
        }
    }

    @GetMapping("/payment/get/{id}")
    public CommonResult<Payment> getPaymentById(@PathVariable("id") Long id){
        Payment payment=paymentService.getPaymentById(id);
        log.info("******查询结果"+payment);
        if(payment!=null) {
            return new CommonResult(200, "success,serverPort:"+serverPort, payment);
        }else {
            return new CommonResult(400,"fail",null);
        }

    }

    @GetMapping("/payment/discovery")
    public Object discovery(){
       List<String> services=discoveryClient.getServices();
       for (String service:services){
           log.info("***********service:"+service);
       }
       List<ServiceInstance> serviceInstances=discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
       for (ServiceInstance serviceInstance:serviceInstances){
           log.info(serviceInstance.getHost()+"\t"+serviceInstance.getInstanceId()+"\t"+serviceInstance.getPort()+"\t"+serviceInstance.getUri());
       }
       return this.discoveryClient;
    }
}

 

 

2.8001的主启动类

@SpringBootApplication
@EnableEurekaClient
@EnableDiscoveryClient
public class PaymentMain8001 {
    public static void main(String[] args) {
        SpringApplication.run(PaymentMain8001.class,args);
    }
}

 

3.测试
3.1启动eurekaServer
3.2启动8001
地址：http://localhost:8001/payment/discovery