如何使用Feign后台内部传递MultipartFile
先修改Feign Client接口
import feign.codec.Encoder;
import feign.form.spring.SpringFormEncoder;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.context.annotation.Bean;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RequestPart;
import org.springframework.web.multipart.MultipartFile;
@FeignClient(value = "upload", fallbackFactory = UploadFallbackFactory.class, configuration = UploadClient.MultipartSupportConfig.class)
public interface UploadClient {
@PostMapping(path = "/upload-text", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
String uploadText(@RequestPart(name = "file") MultipartFile file);
class MultipartSupportConfig {
@Bean
public Encoder feignFormEncoder() {
return new SpringFormEncoder();
}
}
}若SpringFormEncoder 引入报错，加上下面的依赖
<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>内部调用
private String uploadFile(String str) {
FileOutputStream fos = null;
FileInputStream fis = null;
MultipartFile multipartFile = null;
byte[] bt = str.getBytes();
File file = null;
try {
file = File.createTempFile("file" + UUID.randomUUID(), ".txt");
fos = new FileOutputStream(file);
fos.write(bt, 0, bt.length);
fis = new FileInputStream(file);
multipartFile = new MockMultipartFile("file", file.getName(),
MediaType.TEXT_PLAIN_VALUE, fis);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return uploadClient.uploadText(multipartFile);
}注意点
Feign进行跨服务传递MultipartFile文件
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。
本文主要包含通过feign进行文件上传模块。
使技术人员在开发过程中遇到问题时有地可查，有章可循。
通过feign进行跨服务传递MultipartFile文件
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>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));
}
}代码示例
@FeignClient(value = "controller-center")
public interface CallFrignService {
@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);
}以上为个人经验，希望能给大家一个参考，也希望大家多多支持编程网。
