手把手教会你(单/多)文件上传(并修改文件默认的最大最小值)

/**
* MultipartFile 自动封装上传过来的文件
* @param email
* @param username
* @param headerImg
* @param photos
* @return
*/
@PostMapping("/upload")
public String upload(@RequestParam("email") String email,
@RequestParam("username") String username,
@RequestPart("headerImg") MultipartFile headerImg,
@RequestPart("photos") MultipartFile[] photos) throws IOException {

log.info("上传的信息：email={}，username={}，headerImg={}，photos={}",
email,username,headerImg.getSize(),photos.length);

if(!headerImg.isEmpty()){
//保存到文件服务器，OSS服务器
String originalFilename = headerImg.getOriginalFilename();
headerImg.transferTo(new File("H:\\cache\\"+originalFilename));
        }

if(photos.length > 0){
for (MultipartFile photo : photos) {
if(!photo.isEmpty()){
String originalFilename = photo.getOriginalFilename();
photo.transferTo(new File("H:\\cache\\"+originalFilename));
                }
            }
        }


return "main";
    }

spring.servlet.multipart.max-file-size=10MB
spring.servlet.multipart.max-request-size=100MB