springcloud学习笔记(四)使用配置文件配置Ribbon

忘是亡心i 2022-06-01 01:21 293阅读 0赞

spring cloud使用配置文件配置Ribbon十分简单：

1.启动类：

package com.xc;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    import org.springframework.cloud.client.loadbalancer.LoadBalanced;
    import org.springframework.context.annotation.Bean;
    import org.springframework.web.client.RestTemplate;
    
    @SpringBootApplication
    @EnableDiscoveryClient
    public class App_ribbonAutoConfig {
    
        @Bean
        @LoadBalanced
        public RestTemplate restTemplate(){
            return new RestTemplate();
        }
    
        public static void main(String[] args) throws Exception {
            SpringApplication.run(App_ribbonAutoConfig.class, args);
        }
    
    }

2.服务类：

package com.xc.controller;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.context.annotation.Bean;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    import org.springframework.web.client.RestTemplate;
    
    @RestController
    public class TestController {
        @Autowired
        private RestTemplate restTemplate;
    
        @RequestMapping("/getString")
        public String getString(){
    
            String s=restTemplate.getForObject("http://cloud-test2/hello",String.class);
            System.out.println(s);
            return "hello";
        }
    }

3.若想自定义负载规则 则在配置文件当中添加(测试了一下  并没有生效，还是采用的轮询算法，等尝试出来再进行修改)：

(应用名称).ribbon.NFLoadBalancerRuleClassName=com.netflix.loadbalancer.RandomRule

clour-test2.ribbon.NFLoadBalancerRuleClassName=com.netflix.loadbalancer.RandomRule