使用feign传递参数类型为MultipartFile的问题

使用feign传递参数类型为MultipartFile的问题

目录feign传递参数类型为MultipartFile引入maven依赖加入配置类在feign客户端进行配置feign传参MultipartFile问题解决首先引入依赖新建feign的配置在feign接口中配置

feign传递参数类型为MultipartFile

feign默认是不支持多媒体文件类型的文件传输的，但是可以通过引入第三方jar包解决这个问题，步骤可以分为三步。

引入maven依赖

io.github.openfeign.form

feign-form

3.3.0

io.github.openfeign.form

feign-form-spring

3.3.0

加入配置类

@Configuration

public class FeignMultipartSupportConfig {

@Bean

@Primary

@Scope("prototype")

public Encoder multipartFormEncoder() {

return new SpringFormEncoder();

}

@Bean

public feign.Logger.Level multipartLoggerLevel() {

return feign.Logger.Level.FULL;

}

}

在feign客户端进行配置

import org.springframework.cloud.openfeign.FeignClient;

import org.springframework.http.MediaType;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.bind.annotation.RequestPart;

import org.springframework.web.multipart.MultipartFile;

import config.FeignMultipartSupportConfig;

import feign.Response;

@FeignClient(value = "", fallback = FileServiceFallback.class,configuration=FeignMultipartSupportConfig.class)

public interface IFileService {

//上传文件

@RequestMapping(value = "/rmi/fileService/mediaImgUpload", produces = {MediaType.APPLICATION_jsON_UTF8_VALUE},consumes = MediaType.MULTIPART_FORM_DATA_VALUE)

public String mediaImgUpload(@RequestPart MultipartFile file);

//下载文件

@RequestMapping(value = "/rmi/fileService/mediaDownload",method = RequestMethod.GET,consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)

public Response mediaDownload(@RequestParam(required = true) String mediaId);

feign传参MultipartFile问题解决

首先，feign服务之间的调用，传参默认的格式为：ContentType=application/x-www-form-urlencoded

以表单的形式传参的，而文件流的传参，需要form-data的ContentType，否则会报错的

首先引入依赖

io.github.openfeign.form

feign-form

3.8.0

io.github.openfeign.form

feign-form-spring

3.8.0

注意spring boot版本是2.x以上的，上面两个依赖的版本不低于3.5.0，否则还是无效的

新建feign的配置

package com.wm.blog_config.config;

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;

/**

* @author ：半卷流年

* @description : 解决feign传递流数据的异常

* @createTime ：2020/6/14

*/

http://@Configuration

public class FeignSupportConfig {

@Autowired

private ObjectFactory messageConverters;

@Bean

public Encoder feignFormEncoder() {

return new SpringFormEncoder(new SpringEncoder(messageConverters));

}

}

在feign接口中配置

package com.wm.blog_admin.feign;

import com.wm.blog_admin.feign.factory.PictureClientFallbackFactory;

import com.wm.blog_common.constatnt.CommonConstant;

import com.wm.blog_common.domain.TFileDO;

import com.wm.blog_common.entity.TFile;

import com.wm.blog_common.req.TFileQuery;

import com.wm.blog_common.result.Result;

import com.wm.blog_config.config.CustomFeignConfig;

import com.wm.blog_config.config.FeignSupportConfig;

import org.springframework.cloud.openfeign.FeignClient;

import org.springframework.http.MediaType;

import org.springframework.web.bind.annotation.*;

import org.springframework.web.multipart.MultipartFile;

import java.util.List;

/***

* @ClassName: PictureFeignClient

* @Description: picture feign调用 todo feign使用get有坑啊,是否考虑使用HttpClient替换feign的HttpURLConnection，采用apache的HttpClient

* @Author: wm_yu

* @Create_time: 16:39 2020-3-26

*/

@FeignClient(value = CommonConstant.PICTURE_MODULE_NAME, configuration = {CustomFeignConfig.class, FeignSupportConfig.class}, fallbackFactory = PictureClientFallbackFactory.class)

public interface PictureFeignClient {

/**

* id查询图片信息

* @param id

* @return

*/

@GetMahttp://pping("/web/picture/{id}")

Result get(@PathVariable("id") Long id);

/**

* id批量查询图片信息

* @param idList

* @return

*/

@PostMapping("/web/picture/getByIdList")

Result> getByIdList(@RequestBody List idList);

/**

* 文件上传

* @param file

* @return

*/

@PostMapping(value = "/web/picture/uploadFile",produces = {MediaType.APPLICATION_JSON_UTF8_VALUE},consumes = MediaType.MULTIPART_FORM_DATA_VALUE)

Result uploadFile(@RequestPart("file") MultipartFile file);

}

注意加上这个，表示传参格式：

就可以传参了的

版权声明：本文内容由网络用户投稿，版权归原作者所有，本站不拥有其著作权，亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容，请联系我们jiasou666@gmail.com 处理，核实后本网站将在24小时内删除侵权内容。