Openfeign如何传参
OpenFeign 如何传参
1、传递JSON数据
TIP
openFeign默认的传参方式就是JSON传参（@RequestBody），因此定义接口的时候可以不用@RequestBody注解标注
provider接口：
@RestController
@RequestMapping("/openfeign/provider")
public class OpenFeignProviderController
{
@PostMapping("/order2")
public Order createOrder2(@RequestBody Order order){
return order;
}
}
consumer中openFeign接口：
@FeignClient(value = "openFeign-provider")
public interface OpenFeignService
{
/**
* 参数默认是@RequestBody标注的，这里的@RequestBody可以不填
* 方法名称任意
*/
@PostMapping("/openfeign/provider/order2")
Order createOrder2(@RequestBody Order order);
}
2、POJO表单传参
provider接口：
@RestController
@RequestMapping("/openfeign/provider")
public class OpenFeignProviderController
{
@PostMapping("/order1")
public Order createOrder1(Order order){
return order;
}
}
consumer中openFeign接口：
@FeignClient(value = "openFeign-provider")
public interface OpenFeignService
{
/**
* 参数默认是@RequestBody标注的，如果通过POJO表单传参的，使用@SpringQueryMap标注
*/
@PostMapping("/openfeign/provider/order1")
Order createOrder1(@SpringQueryMap Order order);
}
3、URL中携带参数传递
provider接口：
@RestController
@RequestMapping("/openfeign/provider")
public class OpenFeignProviderController
{
@GetMapping("/test/{id}")
public String test(@PathVariable("id")Integer id){
return "accept one msg id="+id;
}
consumer中openFeign接口：
@FeignClient(value = "openFeign-provider")
public interface OpenFeignService
{
@GetMapping("/openfeign/provider/test/{id}")
String get(@PathVariable("id")Integer id);
}
4、普通表单参数
provider接口：
@RestController
@RequestMapping("/openfeign/provider")
public class OpenFeignProviderController
{
@PostMapping("/test2")
public String test2(String id,String name){
return MessageFormat.format("accept on msg id={0}，name={1}",id,name);
}
}
consumer中openFeign接口：
@FeignClient(value = "openFeign-provider")
public interface OpenFeignService
{
/**
* 必须要@RequestParam注解标注，且value属性必须填上参数名
* 方法参数名可以任意，但是@RequestParam注解中的value属性必须和provider中的参数名相同
*/
@PostMapping("/openfeign/provider/test2")
String test(@RequestParam("id") String arg1,@RequestParam("name") String arg2);
}