将byte []转换为图像并在jsp上显示

您可以将tranisent

base64imageFile

User

<img alt="img" />

在您的方法中，您应该进行编码，例如

@RequestMapping(value = "/register", method = RequestMethod.POST)    public ModelAndView userRegister(@ModelAttribute("user") @Valid User user, BindingResult result, ModelMap model, @RequestParam("fileData") MultipartFile fileData) throws Exception {        if (!fileData.isEmpty() && fileData != null) {      byte[] bytes = fileData.getBytes(); user.setFileName(fileData.getOriginalFilename()); user.setImageFile(bytes); byte[] enprebase64 = base64.enprebase64(bytes); String base64Enpred = new String(enprebase64, "UTF-8"); user.setbase64image(base64enpred);        }    }

IOUtils

base64

org.apache.commons