openfeign 添加请求参数

前言：

        openfeign入门请参考 SpringCloud 之 openfeign 使用，下面说一下实际使用的几种添加请求参数的样例。

1.添加固定请求头

@Component
@FeignClient(value = "nacos-client", fallback = ClientServiceFallback.class)
public interface ClientService {
    @GetMapping(value = "/test/check",headers = {"token=123","Host=www.xxx.com"})
    String testCheck();
}

2.添加可变请求头

@Component
@FeignClient(value = "nacos-client", fallback = ClientServiceFallback.class)
public interface ClientService {
    @GetMapping(value = "/test/check")
    String testCheck(@RequestHeader("token") String token, @RequestHeader("Host") String name);
}

3.添加请求参数

@Component
@FeignClient(value = "nacos-client", fallback = ClientServiceFallback.class)
public interface ClientService {
    @GetMapping(value = "/test/check")
    String testCheck(@RequestParm("name") String name);
}

4.添加请求结构体

@Component
@FeignClient(value = "nacos-client", fallback = ClientServiceFallback.class)
public interface ClientService {
    @PostMapping(value = "/test/check")
    String testCheck(@RequestBody("data") Data data);
}

5.添加路径参数

@Component
@FeignClient(value = "nacos-client", fallback = ClientServiceFallback.class)
public interface ClientService {
    @GetMapping(value = "/test/path/{name}")
    String testCheck(@PathVariable(value = "name") String name);
}

6.可抛出自定义异常

抛出异常后可自定义捕获异常处理逻辑。

@Component
@FeignClient(value = "nacos-client")
public interface ClientService {
    @GetMapping(value = "/test/check")
    String testCheck() throws RuntimeException;
}