feign.codec.EncodeException: i

默认应该使用SpringEncoder才对，但可能你在项目中指定了其他的Encoder

@SpringBootApplication
@EnableCircuitBreaker
@EnableEurekaClient
@EnableFeignClients
@ComponentScan(excludeFilters = {@ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE,value = FeignMultipartSupportConfig.class)})
public class BootstrapApplication {
 
   public static void main(String[] args) {
      SpringApplication.run(BootstrapApplication.class, args);
   }
}

在目标feign上面添加：

@FeignClient(name = "micro-picture", fallbackFactory = MicroPictureFactory.class, configuration = FeignMultipartSupportConfig.class)
public interface MicroPictureClient {

@RequestMapping(value = { "/picture/common/upload/{commonKey}" }, method = RequestMethod.POST, consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
   public String upload(@RequestPart("image") MultipartFile image, @PathVariable("commonKey") Long commonKey);
}

就可以实现对应的服务做图片的上传，针对的图片微服务就可以实现数据的额接收。

对应配置文件的代码：

@Configuration
public class FeignMultipartSupportConfig {

   @Bean
   @Primary
   @Scope("prototype")
   public Encoder multipartFormEncoder() {
      return new FeignSpringFormEncoder();
   }

   @Bean
   public feign.Logger.Level multipartLoggerLevel() {
      return feign.Logger.Level.FULL;
   }
}
 

package com.zhht.config;

import feign.RequestTemplate;
import feign.codec.EncodeException;
import feign.codec.Encoder;
import feign.form.ContentType;
import feign.form.FormEncoder;
import feign.form.MultipartFormContentProcessor;
import feign.form.spring.SpringManyMultipartFilesWriter;
import feign.form.spring.SpringSingleMultipartFileWriter;
import org.springframework.web.multipart.MultipartFile;

import java.lang.reflect.Type;
import java.util.Collections;
import java.util.Map;

public class FeignSpringFormEncoder extends FormEncoder {
   
   public FeignSpringFormEncoder() {
      this(new Default());
   }

   public FeignSpringFormEncoder(Encoder delegate) {
      super(delegate);
      MultipartFormContentProcessor processor = (MultipartFormContentProcessor) this
            .getContentProcessor(ContentType.MULTIPART);
      processor.addWriter(new SpringSingleMultipartFileWriter());
      processor.addWriter(new SpringManyMultipartFilesWriter());
   }

   public void encode(Object object, Type bodyType, RequestTemplate template) throws EncodeException {
      if (bodyType.equals(MultipartFile.class)) {
         MultipartFile file = (MultipartFile) object;
         if (file != null) {
            Map<String, Object> data = Collections.singletonMap("image", object);
            super.encode(data, MAP_STRING_WILDCARD, template);
            return;
         }
      } else if (bodyType.equals(MultipartFile[].class)) {
         MultipartFile[] file = (MultipartFile[]) object;
         if (file != null) {
            Map<String, Object> data = Collections.singletonMap("imgList", object);
            super.encode(data, MAP_STRING_WILDCARD, template);
            return;
         }
      }
      super.encode(object, bodyType, template);
   }
}