Feign进行跨服务传递MultipartFile文件

1.编写目的

通过调用服务进行文件上传，避免每个需要上传文件的模块都写一遍上传服务，造成代码冗余。

2.主要内容

本文主要包含通过feign进行文件上传模块。

3.作用

使技术人员在开发过程中遇到问题时有地可查，有章可循。

4.如何通过feign进行跨服务传递MultipartFile文件

4.1添加依赖

<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>

4.2添加配置文件

package com.ruiyi.twowayreferral.configurer;

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;
import org.springframework.context.annotation.Configuration;

@Configuration
public class MultipartSupportConfig {

    @Autowired
    private ObjectFactory<HttpMessageConverters> messageConverters;

    @Bean
    public Encoder feignFormEncoder() {
        return new SpringFormEncoder(new SpringEncoder(messageConverters));
    }
}

4.3代码示例

@FeignClient(value = "controller-center")
public interface CallFrignService {

    /**
     * @Create 文件上传 wanggx_ruiyi 2019.11.15
     * @param uploadPath 文件上传地址
     * @param file 上传的文件
     * @return
     */
    @PostMapping(value = "/api/v1/common/file/fileUpload",consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
    String fileUpload(@RequestParam(value = "uploadPath", required = true) String uploadPath,@RequestPart(value = "file", required = true) MultipartFile file);
}