springboot上传单个文件

上传文件到两个不同的路径下，一个是项目路径，一个的项目编译路径，上传到编译路径下（target）文件可能会自动消失

	@PostMapping("/uploadfile")
    @ResponseBody
    public String upload(@RequestParam("file") MultipartFile file) throws IOException {
		//如果文件不存在上传失败
        if (file.isEmpty()) {
            LOGGER.info("上传失败");
            System.out.println("文件不存在");
            return "upload fail";
        }
		//获取文件名字
        String fileName = file.getOriginalFilename();
        //设置编译后文件存在路径
        String path = ClassUtils.getDefaultClassLoader().getResource("").getPath()+"static/images/tx/";
        //获取项目路径
        File directory = new File("src/main/resources/static/images/tx");
        String paths = directory.getCanonicalPath();

        File dest = new File(paths+'/' + fileName);
        System.out.println(dest.getAbsoluteFile());

        FileInputStream fileInputStream = (FileInputStream) file.getInputStream();
        //以流的方式上传
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(path + File.separator + fileName));
        byte[] bs = new byte[1024];
        int len;
        while ((len = fileInputStream.read(bs)) != -1) {
            bos.write(bs, 0, len);
        }
        bos.flush();
        bos.close();
        try {
        	//文件上传
            file.transferTo(dest);
            LOGGER.info("上传成功");
            return "upload success";
        } catch (IOException e) {
            LOGGER.error(e.toString(), e);
        }
        return "upload success";
    }

springboot上传多个文件

上传到项目静态路径下可参考上面

 	@PostMapping("/uploadfiles")
 	@ResponseBody
    public String upalb(@RequestParam("file") MultipartFile[] file) throws IOException {
    	if(file.length==0){
        	return "file not exist";
        }
    	//分别上传每个文件
        for(int i=0;i<file.length;i++){
            String fileName = file[i].getOriginalFilename();
            String path = ClassUtils.getDefaultClassLoader().getResource("").getPath()+"static/images/";
            File dest = new File(paths + fileName);
            System.out.println(dest.getAbsoluteFile());
            try {
                file[i].transferTo(dest);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }        
        return "upload success";

    }