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查看依赖

查看使用的openfeign版本是否已包含feign-form和feign-form-spring





没有则在pom.xml里添加依赖

        <dependency>
            <groupId>io.github.openfeign.form</groupId>
            <artifactId>feign-form</artifactId>
            <version>3.3.0</version>
        </dependency>
        <dependency>
            <groupId>io.github.openfeign.form</groupId>
            <artifactId>feign-form-spring</artifactId>
            <version>3.3.0</version>
        </dependency>

FeignClient

@PostMapping添加consumes = MediaType.MULTIPART_FORM_DATA_VALUE



feign接口和对应的被调用接口的参数要加上@RequestPart

@PostMapping(value = "/uploadFile", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
Response uploadFile(@RequestPart("file") MultipartFile file);

MultipartSupportConfig

@FeignClient 添加配置 configuration= MultipartSupportConfig.class

@Configuration
public class MultipartSupportConfig {

    @Autowired
    private ObjectFactory<HttpMessageConverters> messageConverters;

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

}