4-springcloud实现服务消费方直接调用服务提供方

服务消费方直接调用服务提供方

1、创建一个 SpringBoot 工程，并且添加 SpringBoot 的相关依赖； 

2、创建服务提供者的访问方法，也就是后续消费者如何访问提供者； 

Spring Cloud 是基于 rest 的访问，所以我们添加一个 Controller，在该

Controller 中提供一个访问入口：

服务提供方代码:

controller:

@RestController
public class GoodsController {
    @Autowired
    private GoodsService goodsService;
    @GetMapping("/notFound")
    public String notFound() {
        return " this is demo - notFound -new-2 ";
    }
    @GetMapping("/getUser")
    public ResultObject getUser() {
        TblSysuserInfo user = goodsService.getGoodsName();
        return new ResultObject(0000, "查询成功", user);
    }
}

service:

@Service
public class GoodsServiceImpl implements GoodsService{
    @Autowired
    TblSysuserInfoMapper tblSysuserInfoMapper;
    public TblSysuserInfo getGoodsName() {
        return tblSysuserInfoMapper.selectByPrimaryKey("1001");
    }
}

@SpringBootApplication
@EnableDiscoveryClient //开启服务注册与发现功能
@MapperScan("com.example.springboot.dao.user.mapper")
public class Demo1ProviderApplication {
    public static void main(String[] args) {
        SpringApplication.run(Demo1ProviderApplication.class, args);
        System.out.println("---------------start success---------------");
    }
}

服务消费方代码:

controller:

@RestController
public class GoodsController {
    @Autowired
    RestTemplate restTemplate;
    @Autowired
    private GoodsFeignService goodsFeignService;
    @GetMapping("/notFound-feign")
    public String notFound() {
        return goodsFeignService.notFound();
    }
    @RequestMapping("/cloud/goods")
    public ResultObject goods(Model model) {
        //调用远程的一个controller, restful的调用
        ResponseEntity<ResultObject> responseEntity = restTemplate.getForEntity("http://localhost:8089/getUser", ResultObject.class);
        return responseEntity.getBody();
    }
}

service:

@SpringBootApplication
@EnableDiscoveryClient //开启服务注册与发现功能
@EnableFeignClients
//@EnableFeignClients(basePackageClasses= GoodsFeignService.class) //开启feign
/**
 * 如果消费者的启动类的包是
 *
 * com.xxx.business，你的feign接口定义包应该是com.xxx.business.feign或com.xxx.business.service，反正一定要在
 *
 * com.xxx.business这个路径下面，feign才能成功被注入。
 */
public class Demo1ConsumerApplication {
    public static void main(String[] args) {
        SpringApplication.run(Demo1ConsumerApplication.class, args);
        System.out.println("-------consume start success------------");
    }

    @Bean
//    @LoadBalanced
    RestTemplate restTemplate(){
        return new RestTemplate();
    }
}

直接调用消费端接口:返回结果