1、第一種方式：

A:JSP頁面：

<form name="importForm" action="${ctx }/service/userService/BatchImport.do" method="post" enctype="multipart/form-data">

請選擇上傳所需檔案：<input type="file" id="theFile" name="theFile" /><br/>
<input  type="submit" value="提交"/>
</form>

B: Controller 層

@Controller
 

@RequestMapping("/service/userService")
public class LoadUserServiceAction  {

    @Reference
    UserHelper userHelper;
    @Reference
    ClassHelper classHelper;
    @Reference
    InstitutionHelper institutionHelper;

    @RequestMapping("/BatchImport")
    public void BatchImport(HttpServletRequest request, HttpServletResponse response)
            throws
 
 Exception {
        response.setContentType("application/json");
        response.setCharacterEncoding("utf-8");
        PrintWriter pw = null;
        request.setCharacterEncoding("utf-8");
        int roleID = NumberUtils.toInt(request.getParameter("role"));
        int organID = NumberUtils.toInt(request.getParameter("organ"
 
));
        //是否忽略警告
        boolean ignoreWarning = BooleanUtils.toBoolean(request.getParameter("ignore"));
        MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
        MultipartFile importFile = multipartRequest.getFile("theFile");
            try {
            JSONObject json = new JSONObject();
            json.put("needConfirm", false);
            pw = response.getWriter();
            if(importFile == null){
                json.put("error", "未讀取到檔案");
                pw.print(json.toString());
            }else{
                Workbook workbook = null;
                String fileName = importFile.getOriginalFilename();
                if(StringUtils.isNotBlank(fileName)){
                    String[] strArr = fileName.split("\\.");
                    if(strArr != null && strArr.length > 0){
                        if("xls".equals(strArr[strArr.length - 1])){
                            workbook = new HSSFWorkbook(importFile.getInputStream());
                        } else if("xlsx".equals(strArr[strArr.length - 1])){
                            workbook = new XSSFWorkbook(importFile.getInputStream());
                        } else {
                            json.put("error", "無法讀取的檔案格式");
                            pw.print(json.toString());
                        }
                    }
                }

                StringBuilder errorReason = new StringBuilder();
                if(organID < 0){
                    json.put("error", "讀取不到正確的機構id");
                    pw.print(json.toString());
                }
                List<Object[]> objsArrList = readExcel(workbook, organID, roleID);
                boolean needConfirm = checkData(objsArrList, roleID, errorReason);
                if(errorReason.length() > 0 && 
                        ( (needConfirm && ! ignoreWarning) || !needConfirm )){
                    json.put("needConfirm", needConfirm);
                    json.put("error", errorReason.toString().replaceAll("\\[|]", ""));
                    pw.print(json.toString());
                }
                userHelper.saveUserObjects(objsArrList);
                pw.print("success");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if(pw != null){
                pw.flush();
                pw.close();
            }
        }
     }
     /**
     * 檢查資料
     * @param objsArrList 物件陣列 
     * @param errorReason 錯誤原因
     */
    private boolean checkData(List<Object[]> objsArrList, int roleID, StringBuilder errorReason){
        //這是省略了檢驗資料的程式碼。。。。
    }
/**
     * 讀取excel並且形成物件
     * @param workbook 工作簿物件
     * @return
     */
    private List<Object[]> readExcel(Workbook workbook, int organID, int roleID){
        List<Object[]> objsArr = new ArrayList<Object[]>();
        //得到工作簿開始解析資料
        Sheet sheet = workbook.getSheetAt(0);
        //處理資料
    }
}

2、採用註解的方式接受jsp傳過來的檔案

A: jsp 頁面不變
B: Controller 層
其實和上面差不多 主要的區別就是在方法裡添加了引數，該引數採用註解的方式，前提條件是要求引數名和jsp中的檔案的name值必須一致，否則得到的是null；
具體程式碼：

   @Controller
@RequestMapping("/service/userService")
public class LoadUserServiceAction  {

    @Reference
    UserHelper userHelper;
    @Reference
    ClassHelper classHelper;
    @Reference
    InstitutionHelper institutionHelper;

    @RequestMapping("/BatchImport")
    public void BatchImport(MultipartFile theFile,HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        response.setContentType("application/json");
        response.setCharacterEncoding("utf-8");
        PrintWriter pw = null;
        request.setCharacterEncoding("utf-8");
        int roleID = NumberUtils.toInt(request.getParameter("role"));
        int organID = NumberUtils.toInt(request.getParameter("organ"));
        //是否忽略警告
        boolean ignoreWarning = BooleanUtils.toBoolean(request.getParameter("ignore"));
        //theFile拿到的就是該檔案，然後進行相應的操作
        //和上面的一樣
    }
} 

純手工作業，轉摘的時候請附上我的url。謝謝