openfeign使用表单形式提交

package com.volvo.web.api.feign;

import feign.RequestTemplate;
import feign.codec.EncodeException;
import feign.codec.Encoder;
import feign.form.FormEncoder;
import feign.form.spring.SpringFormEncoder;
import org.springframework.beans.factory.ObjectFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.cloud.openfeign.support.SpringEncoder;
import org.springframework.context.annotation.Bean;
import sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl;

import java.lang.reflect.Type;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

public class FormSupportConfig {
    // new一个form编码器，实现支持form表单提交
    @Bean
    Encoder feignFormEncoder() {
        return new MyEncoder();
    }


    class MyEncoder extends SpringFormEncoder{
        public void encode(Object object, Type bodyType, RequestTemplate template) throws EncodeException {
            if (((ParameterizedTypeImpl) bodyType).getRawType().equals(Map.class)) {
                Map<String,?> data = (Map<String, ?>) object;
                Set<String> nullSet = new HashSet<>();
                for (Map.Entry<String, ?> entry : data.entrySet()) {
                    if (entry.getValue() == null) {
                        nullSet.add(entry.getKey());
                    }
                }
                for (String s : nullSet) {
                    data.remove(s);
                }
                super.encode(data, MAP_STRING_WILDCARD, template);
                return;
            }
            super.encode(object, bodyType, template);
        }
    }
}

@FeignClient(contextId = "OpenWareHouseFeign",value = ServiceNameConstants.OPEN_WAREHOUSE,url = "${feign.sn.open-warehouse}",configuration = FormSupportConfig.class)
public interface OpenWareHouseFeign {

@PostMapping(value = "/openapi/og/createOrder",
            consumes = {MediaType.APPLICATION_FORM_URLENCODED_VALUE})
    String createOrder(@RequestBody Map<String, Object> params);

<!--  引入文件feign文件上传依赖 -->
    <dependency>
       <groupId>io.github.openfeign.form</groupId>
       <artifactId>feign-form</artifactId>
       <version>3.0.3</version>
     </dependency>
    <dependency>
       <groupId>io.github.openfeign.form</groupId>
       <artifactId>feign-form-spring</artifactId>
       <version>3.0.3</version>
    </dependency>