spring cloud开发Greenwich版：服务调用RestTemplate（五） | chenying99'blog - 君子博学而日参省乎己，则知明而行无过矣

建立注册服务器（ralab-server）并服务提供者（ralab-nlp）向其注册后，这时服务消费者（ralab-client，服务消费者也向注册服务器注册）可以通过访问注册服务器，查找服务实例名的方式查找服务提供者的相关信息，然后调用其服务

这里基于微服务’ralab-client’

Add @LoadBalanced to the RestTemplate Instance
Edit RestTemplate url parameter host as ‘nlp-service’

服务消费者ralab-client
RalabClientApplication文件

package com.ralab.ralabclient;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication
@EnableEurekaClient
public class RalabClientApplication {

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

    public static void main(String[] args) {
        SpringApplication.run(RalabClientApplication.class, args);
    }

}

修改NlpResource文件

package com.ralab.ralabclient.resources;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@RequestMapping("/nlp")
public class NlpResource {

    @Autowired
    private RestTemplate restTemplate;

    @GetMapping("/service")
    public String index()
    {
      //String result = restTemplate.getForObject("http://localhost:8090/nlp/api", String.class);
      String result = restTemplate.getForObject("http://nlp-service/nlp/api", String.class);
      return result;
    }
}

运行RalabClientApplication

测试http://localhost:8091/nlp/service