Spring Cloud使用Feign实现Form表单提交的示例

<dependency>
 <groupId>io.github.openfeign.form</groupId>
 <artifactId>feign-form</artifactId>
 <version>3.2.2</version>
</dependency>
<dependency>
 <groupId>io.github.openfeign.form</groupId>
 <artifactId>feign-form-spring</artifactId>
 <version>3.2.2</version>
</dependency>

@FeignClient(name = "xxx", url = "http://www.itmuch.com/", configuration = TestFeignClient.FormSupportConfig.class)
public interface TestFeignClient {
  @PostMapping(value = "/test",
      consumes = {MediaType.APPLICATION_FORM_URLENCODED_VALUE},
      produces = {MediaType.APPLICATION_JSON_UTF8_VALUE}
      )
  void post(Map<String, ?> queryParam);
  class FormSupportConfig {
    @Autowired
    private ObjectFactory<HttpMessageConverters> messageConverters;
    // new一个form编码器，实现支持form表单提交
    @Bean
    public Encoder feignFormEncoder() {
      return new SpringFormEncoder(new SpringEncoder(messageConverters));
    }
    // 开启Feign的日志
    @Bean
    public Logger.Level logger() {
      return Logger.Level.FULL;
    }
  }
}

@GetMapping("/user/{id}")
public User findById(@PathVariable Long id) {
 HashMap<String, String> param = Maps.newHashMap();
 param.put("username","zhangsan");
 param.put("password","pwd");
 this.testFeignClient.post(param);
 return new User();
}