Spring 上傳文件後臺

@Controller
@RequestMapping(value = BaseController.FRONT_PATH + "/express/driver")
public class DriverFileUploadController {


    @Autowired
    private PreferencesManager manager;


    @RequestMapping(value = "/upload", method = RequestMethod.POST)
    public
    @ResponseBody
    CommonResp uploadHeadFile(ModelMap model) throws java.lang.Exception {
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
        CommonResp commonResp = new CommonResp();
        Preferences pref = manager.getSystemPreferenceFor("config");
        String realPath = pref.get("upload_dir", "/upload/");
        Boolean isRelative = Boolean.valueOf(pref.get("upload_dir_relative", ""));  //選擇是不是存儲絕對路徑true：相對路徑


        System.out.println(realPath);
        List<FileItem> items = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request);
        for (FileItem item : items) {
            if (!item.isFormField()) {
                String fileName = item.getName();
                InputStream content = item.getInputStream();
                // Do whatever with the content InputStream.
                //這裏處理文件流
                if (isRelative) {
                    String relativePath = request.getSession().getServletContext().getRealPath(realPath);
                    File driverFolder = creatFolder(relativePath, item.getName().replace(" ", ""));
                    FileUtils.copyInputStreamToFile(content, driverFolder);
                }else{
                    File driverFolder = creatFolder(realPath, item.getName().replace(" ", ""));
                    FileUtils.copyInputStreamToFile(content, driverFolder);
                }


            }
        }
        commonResp.setContext("上傳成功");
        return commonResp;
    }


    /**
     * 這裏只建立一個realPath 若是每一個用戶都建立一個須要用下邊的註釋的方法
     *
     * @param realpath
     * @param photoName
     * @return  
     */
    private File creatFolder(String realpath, String photoName) {
        File file = null;
        File driverFolder = new File(realpath);
        String[] eachFolder = photoName.split("\\.");
        if (driverFolder.exists()) {
            file = new File(driverFolder, eachFolder[0] + "." + eachFolder[1]);
        } else {
            file = new File(driverFolder, eachFolder[0] + "." + eachFolder[1]);
        }
        return file;
    }
}
/**
 * 檢測與建立一級、二級文件夾、文件名
 * 這裏我經過傳入的兩個字符串來作一級文件夾和二級文件夾名稱
 * 經過此種辦法咱們能夠作到根據用戶的選擇保存到相應的文件夾下
 */
  /*  private File creatFolder(String realpath, String photoName) {
        File file = null;
        File driverFolder = new File(realpath);            //一級文件夾
        String[] eachFolder = photoName.split("\\.");
        if (driverFolder.exists()) {                                //若是一級文件夾存在，則檢測二級文件夾
            File secondFolder = new File(driverFolder, eachFolder[0]);
            if (secondFolder.exists()) {                        //若是二級文件夾也存在，則建立文件
                file = new File(secondFolder, eachFolder[0] + "." + eachFolder[1]);
            } else {                                            //若是二級文件夾不存在，則建立二級文件夾
                secondFolder.mkdir();
                file = new File(secondFolder, eachFolder[0] + "." + eachFolder[1]);        //建立完二級文件夾後，再合建文件
            }
        } else {                                                //若是一級不存在，則建立一級文件夾
            driverFolder.mkdir();
            File secondFolder = new File(driverFolder, eachFolder[0]);
            if (secondFolder.exists()) {                        //若是二級文件夾也存在，則建立文件
                file = new File(secondFolder, eachFolder[0] + "." + eachFolder[1]);
            } else {                                            //若是二級文件夾不存在，則建立二級文件夾
                secondFolder.mkdir();
                file = new File(secondFolder, eachFolder[0] + "." + eachFolder[1]);
            }
        }
        return file;
    }
}*/