springboot笔记(3)文件上传

1.创建springboot项目

2.配置application的静态资源

3.在static中创建upload.html

4.创建upload接口

@RestController
public class FileUploadController {

    SimpleDateFormat sdf =new SimpleDateFormat("yyyy/MM/dd/");

    @PostMapping("/upload")
    public String upload(MultipartFile uploadFile, HttpServletRequest req){
        String realPath=req.getSession().getServletContext().getRealPath("/uploadFile/");
        String format=sdf.format(new Date());
        File folder=new File(realPath+format);
        if(!folder.isDirectory()){
            folder.mkdirs();
        }
        String oldName=uploadFile.getOriginalFilename();
        System.out.println(oldName);
        String newName= UUID.randomUUID().toString()+
                oldName.substring(oldName.lastIndexOf("."),oldName.length());
        try{
            uploadFile.transferTo(new File(folder,newName));
            String filePath=req.getScheme()+"://"+req.getServerName()+":"+
                    req.getServerPort()+"/uploadFile/"+format+newName;
            return filePath;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "上传失败!";
    }
}

5.测试