使用Consul服务注册和发现

2.1服务注册

2.1.1引入依赖

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-consul-discovery</artifactId>
</dependency>

2.1.2编写配置文件

server:
  port: 80
spring:
  application:
    name: cloud-consumer-service
  cloud:
    consul:
      host: localhost
      port: 8500
      discovery:
        service-name: ${spring.application.name}

2.1.3 启动类增加注解

@SpringBootApplication
@EnableDiscoveryClient // 服务注册
@RefreshScope
public class Main8001 {
    public static void main(String[] args) {
        SpringApplication.run(Main8001.class,args);
    }
}

2.1.4启动服务，查看服务是否正常

2.2服务使用

2.2.1引入依赖

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-consul-discovery</artifactId>
</dependency>

2.2.2 调用服务

我们这里基于RestTemplate来调用服务

private static final String PRE_SERVER = "http://cloud-payment-service";

完整Controller

@RestController
@RequestMapping("/consumer/pay")
@Tag(name = "订单模块", description = "订单相关接口")
public class ConsumerController {
    @Resource
    private RestTemplate restTemplate;

    private static final String PRE_SERVER = "http://cloud-payment-service";

    @Operation(summary = "新增支付订单信息")
    @PostMapping
    public ResponseResult saveOrder(@RequestBody PayDTO payDTO){
        return restTemplate.postForObject(PRE_SERVER+"/pay",payDTO,ResponseResult.class);
    }

    @GetMapping("/{id}")
    @Operation(summary = "根据ID查询订单信息")
    public ResponseResult getOrderById(@PathVariable Integer id){
        return restTemplate.getForObject(PRE_SERVER + "/pay/" + id, ResponseResult.class, id);
    }

    @DeleteMapping("/{id}")
    @Operation(summary = "删除订单信息")
    public ResponseResult deleteOrderById(@PathVariable Integer id){
        restTemplate.delete(PRE_SERVER+"/pay/" +id);
        return ResponseResult.success();
    }
    @PutMapping
    @Operation(summary = "更新订单信息")
    public ResponseResult updateOrderById(@RequestBody PayDTO payDTO){
        restTemplate.put(PRE_SERVER + "/pay", payDTO);
        return ResponseResult.success();
    }
}

2.2.3 增加配置文件

@Configuration
public class RestConfig {

    @Bean
    @LoadBalanced  // 负载均衡一定要添加
    public RestTemplate restTemplate(){
        return new RestTemplate();
    }
}

2.2.4 测试