SpringBoot文件上传

代码

public static final String FILE_NAME = "C:\\Users\\mayn\\Desktop\\";
public static final String FILE_PATH_NAME = "C:\\Users\\mayn\\Desktop\\springbootest\\src\\main\\resources\\";

    // 读取请求中的文件并保存
	// 同一文件只上传一次
    // @RequestGetParam
    @RequestMapping("/fileGet")
    public void fileGet(HttpServletResponse response, HttpServletRequest request, @RequestParam(value = "file") MultipartFile file) {
        try {
            String filename = file.getOriginalFilename();
            FileReader fileReader = new FileReader(FILE_NAME + filename);
            try {
                BufferedReader reader = new BufferedReader(fileReader);
                String neirong = null;
                String lineTxt = null;
                while ((lineTxt = reader.readLine()) != null) {
                    lineTxt += '\n';
                    neirong += lineTxt;
                }
                System.out.print(neirong);
                // 保存文件
                file.transferTo(new File(FILE_PATH_NAME + filename));
            } catch (IOException e) {
                e.printStackTrace();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
}



    // 批量上传文件
    // MultipartFile[] files设置为数组即可
    @RequestMapping("/fileAllGet")
    public void fileAllGet(HttpServletResponse response, HttpServletRequest request, @RequestParam("files") MultipartFile[] files, @RequestParam(value = "msg", required = false) String msg) {
        System.out.println(files);
        System.out.println(msg);
        for (MultipartFile file : files) {
            fileGet(response, request, file, msg);
        }
    }

需要注意的是，使用PostMan测试时，如果Post提交方式为form-data，那么无需设置Content-Type，因为浏览器会自动帮你添加上，如果非要手动添加的话，记得不只是添加multipart/form-data，还需要设置boundary