SpringCloud使用Feign Form实现微服务之间的文件上传

1.pom依赖

<dependency>
    <groupId>io.github.openfeign.form</groupId>
    <artifactId>feign-form</artifactId>
    <version>3.0.1</version>
</dependency>
<dependency>
    <groupId>io.github.openfeign.form</groupId>
    <artifactId>feign-form-spring</artifactId>
    <version>3.0.1</version>
</dependency>

2.MultipartSupportConfig配置类

@Configuration
public class MultipartSupportConfig {
    @Autowired
    private ObjectFactory<HttpMessageConverters> messageConverters;

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

3.后端接口改造

关键字consumes = MULTIPART_FORM_DATA_VALUE

@PostMapping(value = "uploadExamTarget", consumes = MULTIPART_FORM_DATA_VALUE)
public JsonResult uploadExamTarget(@RequestBody MultipartFile file) {
    return new JsonResult(coreClient.uploadExamTarget(file));
}

4.FeignClient接口改造

引入配置类MultipartSupportConfig，和接口注解consumes = MULTIPART_FORM_DATA_VALUE

@FeignClient(value = "core-server", configuration = MultipartSupportConfig.class)
public interface CoreClient {
    @RequestMapping(value = "/excel/uploadExamTarget", consumes = MULTIPART_FORM_DATA_VALUE)
    String uploadExamTarget(@RequestBody MultipartFile file);
}