SpringCloudStudy/consumer/src/main/java/cc/bnblogs/consumer/controller/ConsumerController.java

package cc.bnblogs.consumer.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.util.List;
import java.util.concurrent.ThreadLocalRandom;

@RestController
@Slf4j
public class ConsumerController {
    @Autowired
    private DiscoveryClient discoveryClient;

    @Autowired
    private RestTemplate restTemplate;

    @GetMapping("/instances")
    public List<ServiceInstance> AllInstances() {
        return discoveryClient.getInstances("provider");
    }
//
//    @GetMapping("/index")
//    public String index() {
//        // 返回当前注册的所有实例
//        List<ServiceInstance> list = AllInstances();
//        // 随机选择一个实例
//        int index = ThreadLocalRandom.current().nextInt(list.size());
//        log.info("当前访问的是第{}个服务",index + 1);
//        ServiceInstance serviceInstance = list.get(index);
//        String url = serviceInstance.getUri() + "/index";
//        return restTemplate.getForObject(url,String.class);
//    }
    @GetMapping("/index")
    public String index() {
        return restTemplate.getForObject("http://provider/index",String.class);
    }
}