java upload file问题！！

private void loadData() throws FileNotFoundException {



		MultiPartRequestWrapper multiWrapper = (MultiPartRequestWrapper) ServletActionContext

				.getRequest();

		File[] files = multiWrapper.getFiles("upload_file");

		if (files.length > 0) {

			File reportUploadFile = files[0];

			if (reportUploadFile != null) {

				String reportUploadFileName = reportUploadFile

						.getAbsolutePath();

				if (reportUploadFileName.endsWith(".txt")) {

					chinapayTrnsList = new ArrayList();

					System.out.println(reportUploadFileName);

					BufferedReader reader = new BufferedReader(new FileReader(

							new File(reportUploadFileName)));

					CSVFileParser toks = new CSVFileParser(reader);

					int recordCount = 0;

					String[] filename = { "first_name", "last_name", "address",

							"city", "zip_code", "country", "state", "phone",

							"email", "currency", "amount",

							"bank_routing_number", "bank_account_number",

							"bank_name", "ssn" };

					try {

						while (toks.nextRecord()) {

							++recordCount;

							Map map = new HashMap();

							int i = 0;

							while (toks.recordHasMoreFields()) {

								++i;

								String data = toks.nextField();

								map = getExcelMap(map, data, filename[i - 1],

										recordCount, i);

							}

							System.out.println("==============>"+i);

							if(i!=15){

								checkvalue = false;

								addActionError("The data is invalid!");

							}

							if (recordCount != 1) {

								chinapayTrnsList.add(map);

								System.out.println(chinapayTrnsList);

							}

						}

					} catch (Exception ex) {

						addActionError("The data is invalid!");

						checkvalue = false;

					}

					if(recordCount>1){

					ActionContext.getContext().getSession().put(

							user.getName() + "chinapayTrnsList",

							chinapayTrnsList);

					}else{

						checkvalue = false;

						ActionContext.getContext().getSession().put(

								user.getName() + "chinapayTrnsList",

								chinapayTrnsList);

					}

				} else {

					addActionError("Failed!Accept txt file only!");

					checkvalue = false;

				}

			}else{

				addActionError("Failed!Can not find txt file!");

				checkEmpty=false;

			}

		}

	}