springboot 通过@FeignClient 调用远程接口上传文件

刺骨的言语ヽ痛彻心扉 2024-03-26 00:03 37阅读 0赞

> 在解决这个问题的时候，踩过好多坑；这里只写最终成功的方案，这种方案也是一本万利的写法，不会影响其他的feign接口的调用，最后希望对大家有所帮助

#### 1、首先创建一个配置类 ####

package com.meritdata.dam.common.uploadfile;
    
    import feign.codec.Encoder;
    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;
    
    public class FeignMultipartSupport {
        
        @Autowired
        private ObjectFactory<HttpMessageConverters> messageConverters;
    
        @Bean
        public Encoder feignFormEncoder() {
        
            return new SpringFormEncoder(new SpringEncoder(messageConverters));
        }
    
    }

> 注意：这个配置类，不需要加`@Configuration`

#### 2、将上面的配置类，配置到@FeignClient注解中 ####

@Service(value = "damDataWarehouseClient")
    @FeignClient(value = "dam-datawarehouse", path = "/api/datamanage", configuration = FeignMultipartSupportConfig.class)
    public interface DamDataWarehouseClient {
        
    	    /**
         * 导入资源信息
         *
         * @param file file
         */
        @RequestMapping(value = "/resourcecatalog/manage/loadData", method = RequestMethod.POST, consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
        @ResponseBody
        ResultBody loadData(@RequestPart("formFile") MultipartFile file) throws Exception;
        }

#### 3、需要在调用的接口中加`consumes = MediaType.MULTIPART_FORM_DATA_VALUE` ####