Spring boot集成文件服务（代码示范、Postman传MultipartFile类型参数过程）

一、文件上传接口

/**
 * 文件服务
 *
 * @Author Feng, Ge  2020年3月11日15:22:54
 */
@RestController
@RequestMapping(value = "/file")
@Api(value = "FileController", tags = {"文件服务"})
@Slf4j
public class FileController {

    @Value("${fileServer.url}")
    private String FILE_SERVER_URL;

    /**
     * 文件上传接口
     * @param file
     * @return
     * @throws IOException
     */
    @RequestMapping("/uploadFileToServer")
    @ResponseBody
    public JsonResult uploadFileToServer(MultipartFile file) throws IOException, ApiException {
        MlyunClient client = new DefaultMlyunClient(FILE_SERVER_URL);
        File tempFile = null;
        try {
            String originalFilename = file.getOriginalFilename();
            long size = file.getSize();
            String suffix = file.getOriginalFilename().substring(originalFilename.lastIndexOf("."));
            tempFile = File.createTempFile("tmp", suffix);
            file.transferTo(tempFile);
            FileInputStream fileInputStream = new FileInputStream(tempFile);
            MultipartFile multipartFile = new MockMultipartFile("file", originalFilename,
                    ContentType.APPLICATION_OCTET_STREAM.toString(), fileInputStream);
            MlyunResponse rsp = client.execute(new MlyunFSUploadRequest(multipartFile));
            System.out.println("【文件服务返回数据】" + rsp.getBody());
            Map serverResultMap = JsonUtil.jsonToMap(rsp.getBody());
            Map<String,Object> urlMap = new HashMap<>(4);
            if(MyUtil.isNotBlank(serverResultMap.get("data"))){
                urlMap.put("size", size);
                urlMap.put("suffix", suffix);
                urlMap.put("url", serverResultMap.get("data"));
                urlMap.put("fileName", originalFilename);
                return new JsonResult(true, "上传成功！", urlMap);
            }else {
                return JsonResult.error("上传失败！");
            }
        } finally {
            if (tempFile != null) {
                tempFile.deleteOnExit();
            }
        }
    }

}

FILE_SERVER_URL为文件服务器ip+端口，参数类型为MultipartFile。

二、Postman测试

1.设置Headers

key：Content-Type
value：multipart/form-data

2.设置Body为form-data，传参类型选择file类型

3.结果