通过Feign上传文件（踩坑）

﹏ヽ暗。殇╰゛Y 2024-04-18 09:06 84阅读 0赞

# **引入依赖：** #

<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-openfeign</artifactId>
            </dependency>

# **服务提供者： ** #

@RestController
    @RequestMapping("/file")
    public interface FileUploadService {
    
        @RequestMapping(value = "/uploadFile", method = RequestMethod.POST, consumes = MULTIPART_FORM_DATA_VALUE)
        CommonResult<String> uploadFile(@RequestPart("file") MultipartFile file,
                                        @RequestParam(value = "containerName", required = false) String containerName
    
    }

**具体实现不是重点……根据你的实际情况去完成……**

# **服务调用者：** #

@RestController
    @FeignClient(value = "XXXXXXXX", configuration = FileUploadServiceFeign.ClientConfiguration.class)
    @RequestMapping("/file")
    public interface FileUploadServiceFeign extends FileUploadService {
        
    
        /**
         * 配置类
         */
        class ClientConfiguration {
            /**
             * 此处注入的是： ObjectFactory<HttpMessageConverters>
             */
            @Autowired
            private ObjectFactory<HttpMessageConverters> messageConverters;
    
            @Bean
            public Encoder feignEncoder() {
                return new SpringFormEncoder(new SpringEncoder(messageConverters));
            }
        }
    }

**这样就行了……**

**需要注意的是：**

**在服务调用者那层的MultipartFile的value要跟服务提供者的@RequestPart中的value值一样。不然它会抛出400异常！！！**

![20190904151046261.png][]

成功案例：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NTk4MDEx_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NTk4MDEx_size_16_color_FFFFFF_t_70 1][]

[20190904151046261.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/f6e02c4963fa4c11a53ef0226a383f47.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NTk4MDEx_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/aeba599046c942e8bdb70e44ed96b452.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NTk4MDEx_size_16_color_FFFFFF_t_70 1]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/4145d153739d44e3b8cb813410cb219b.png