说明

RestTemplate

ums中的controller，用 RestTemplate 作为 web client，调用 notice 微服务

关于 RestTemplate介绍参见：
https://www.malaoshi.top/show_1EF5grJlvJii.html

修改ums工程配置类

通过配置类管理RestTemplate实例

必须使用配置类，后面要用到负载均衡

创建配置类

改写配置类

package top.malaoshi.ums.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

@Configuration
public class ApplicationContextConfig {
    @Bean
    public RestTemplate getRestTemplate(){
        return new RestTemplate();
    }
}

实现controller类

ums工程实现controller类

编写代码

package top.malaoshi.ums.controllers;

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.PostMapping;
import top.malaoshi.ums.entities.Notice;
import top.malaoshi.ums.json.CommonResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;

@RestController
@Slf4j
public class FollowController {

    public static final String NOTICE_URL="http://localhost:8001";

    @Resource
    private RestTemplate restTemplate;

    @PostMapping(value="/follow")
    public CommonResult follow(Notice notice){

        return restTemplate.postForObject(NOTICE_URL+"/sendNotice/",notice, CommonResult.class);
    }

    @GetMapping(value="/getNotice/{id}")
    public CommonResult getNotice(@PathVariable("id") String id){

        return restTemplate.getForObject(NOTICE_URL+"/getNoticeById/"+id, CommonResult.class);
    }


    @GetMapping(value="/getNotice2/{id}")
    public CommonResult getNotice2(@PathVariable("id") String id){
        log.info("---"+id);
        ResponseEntity<CommonResult> re=restTemplate.getForEntity(NOTICE_URL+"/getNoticeById/{1}", CommonResult.class,id);

        if(re.getStatusCode().is2xxSuccessful()){
            return re.getBody();
        }else {
            return new CommonResult(-1,"失败！");
        }
    }

}

原文出处：/show_1EF5iG0eSKiw.html