public OrderInfo selectOrder(Integer id){
    OrderInfo orderInfo = orderMapper.selectOrderById(id);
    //把獲取到的服務(wù)URL拼接到遠(yuǎn)程調(diào)用的URL中
    String url = "http://product-service/product/select?id=" + orderInfo.getProductId();
    ProductInfo productInfo = restTemplate.getForObject(url, ProductInfo.class);
    orderInfo.setProductInfo(productInfo);
    return orderInfo;
}

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>

@SpringBootApplication
@EnableFeignClients
public class OrderServiceApplication {
    public static void main(String[] args) {
        SpringApplication.run(OrderServiceApplication.class,args);
    }
}

@FeignClient(name = "product-service")
public interface ProductApi {
    @RequestMapping("/product/select")
    ProductInfo getProductInfo(@RequestParam("id")Integer id);
}

@FeignClient(name = "product-service",path = "/product")
public interface ProductApi {
    @RequestMapping("/select")
    ProductInfo getProductInfo(@RequestParam("id")Integer id);
}

@Service
public class OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private ProductApi api;
    //設(shè)置原子類
    public OrderInfo selectOrder(Integer id){
        OrderInfo orderInfo = orderMapper.selectOrderById(id);
        //把獲取到的服務(wù)URL拼接到遠(yuǎn)程調(diào)用的URL中
        Integer productId = orderInfo.getProductId();
        ProductInfo productInfo = api.getProductInfo(productId);
        orderInfo.setProductInfo(productInfo);
        return orderInfo;
    }
}

@RestController
@RequestMapping("/product")
public class ProductController {
    @RequestMapping("/p1")
    public String p1(Integer id){
        return "接收到參數(shù)"+id;
    }
}

@FeignClient(value = "product-service")
public interface ProductApi {
    @RequestMapping("/product/p1")
    String p1(@RequestParam("id") Integer id);
}

@RequestMapping("/order")
@RestController
public class OrderController {
    @Autowired
    private ProductApi api;
    @RequestMapping("/p1")
    public String p1(Integer id){
        return api.p1(id);
    }
}

@RestController
@RequestMapping("/product")
public class ProductController {
    @RequestMapping("/p2")
    public String p2(Integer id1,Integer id2){
        return "接收到參數(shù)1:" + id1 + ",接收到參數(shù)2:" + id2;
    }
}

@FeignClient(value = "product-service")
public interface ProductApi {
    @RequestMapping("/product/p2")
    String p2(@RequestParam("id1") Integer p1,@RequestParam("id2") Integer p2);
}

@RequestMapping("/order")
@RestController
public class OrderController {
    @Autowired
    private ProductApi api;
    @RequestMapping("/p2")
    public String p2(Integer p1,Integer p2){
        return api.p2(p1,p2);
    }
}

@RequestMapping("/p3")
public String p3(ProductInfo productInfo){
    return "接收到對(duì)象:" + productInfo;
}

@RequestMapping("/product/p3")
String p3(@SpringQueryMap ProductInfo productInfo);

@RequestMapping("/p3")
public String p3(ProductInfo productInfo){
    return api.p3(productInfo);
}

@RequestMapping("/p4")
public String p4(@RequestBody ProductInfo productInfo){
    return "接收到對(duì)象:" + productInfo;
}

@RequestMapping("/product/p4")
String p4(@RequestBody ProductInfo productInfo);

@RequestMapping("/p4")
public String p4(@RequestBody ProductInfo productInfo){
    return api.p4(productInfo);
}

@FeignClient(value = "product-service")
public interface ProductApi {
    @RequestMapping("/product/p1")
    String p1(@RequestParam("id") Integer id);
}

@RestController
@RequestMapping("/product")
public class ProductController {
    @RequestMapping("/p1")
    public String p1(Integer id){
        return "接收到參數(shù)"+id;
    }
}

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-openfeign</artifactId>
    </dependency>
</dependencies>

<dependency>
    <groupId>org.example</groupId>
    <artifactId>product-api</artifactId>
    <version>1.0-SNAPSHOT</version>
    <scope>compile</scope>
</dependency>

@RestController
@RequestMapping("/product")
public class ProductController implements ProductInterface {
    @Autowired
    private ProductService productService;
    @RequestMapping("/select")
    public ProductInfo getProductInfo(Integer id){
        return productService.selectById(id);
    }
    @RequestMapping("/p1")
    public String p1(Integer id){
        return "接收到參數(shù)"+id;
    }
    @RequestMapping("/p2")
    public String p2(Integer id1,Integer id2){
        return "接收到參數(shù)1:" + id1 + ",接收到參數(shù)2:" + id2;
    }
    @RequestMapping("/p3")
    public String p3(ProductInfo productInfo){
        return "接收到對(duì)象:" + productInfo;
    }
    @RequestMapping("/p4")
    public String p4(@RequestBody ProductInfo productInfo){
        return "接收到對(duì)象:" + productInfo;
    }
}

@FeignClient(value = "product-service")
public interface ProductApi extends ProductInterface {

}

<dependency>
	<groupId>org.example</groupId>
	<artifactId>product-api</artifactId>
	<version>1.0-SNAPSHOT</version>
</dependency>

@SpringBootApplication
@EnableFeignClients(clients = ProductApi.class)
public class OrderServiceApplication {
    public static void main(String[] args) {
        SpringApplication.run(OrderServiceApplication.class,args);
    }
}