SpringMVC 下載Excel模板和匯入資料
阿新 • • 發佈：2019-01-29
一：模板下載功能
頁面：
window.location.href="/test/downloadModel?id="+result;java:
@ResponseBody @RequestMapping(value ="/downloadModel", method = {RequestMethod.GET}) public ResponseEntity<byte[]> downloadModel(@RequestParam("id") String id,HttpServletRequest req) throws InterruptedException { RedisClient.getInstance().put("progress_"+id,0,60*60); ResponseEntity<byte[]> download = fileService.download("files/cardKind/cardKindModel.xlsx", id, req); RedisClient.getInstance().put("progress_"+id,100,60*60); return download; }
download方法
@Override public ResponseEntity<byte[]> download(String path, String id, HttpServletRequest req) { downloadLogger.info("【檔案下載】 download --> 執行開始，請求檔案相對路徑：" + path); File file = null; try { // Resource resource = new ClassPathResource(path); // file = resource.getFile(); // file=new File("c:/1.xlsx"); Resource resource=new ServletContextResource(req.getServletContext(),"file/cardKindModel.xlsx"); file = resource.getFile(); // } catch (IOException e) { } catch (Exception e) { downloadLogger.info("【檔案下載】 download -->執行異常，無法載入到服務端檔案，請求檔案相對路徑：" + path, e); return null; } RedisClient.getInstance().put("progress_" + id, 10, 60 * 60); String fileName = null; try { fileName = new String(file.getName().getBytes("utf-8"), "ISO-8859-1"); } catch (UnsupportedEncodingException e) { downloadLogger.info("【檔案下載】 download -->執行異常，無法解析服務端檔案，請求檔案相對路徑：" + path, e); return null; } RedisClient.getInstance().put("progress_" + id, 20, 60 * 60); HttpHeaders header = new HttpHeaders(); header.setContentDispositionFormData("attachment", fileName); header.setContentType(MediaType.APPLICATION_OCTET_STREAM); RedisClient.getInstance().put("progress_" + id, 30, 60 * 60); byte[] res = null; try { res = FileUtils.readFileToByteArray(file); } catch (IOException e) { downloadLogger.info("【檔案下載】 download -->執行異常，解析服務端檔案為位元組陣列異常，請求檔案相對路徑：" + path, e); return null; } RedisClient.getInstance().put("progress_" + id, 90, 60 * 60); return new ResponseEntity<byte[]>(res, header, HttpStatus.CREATED); }
ps: 模板檔案在webapp目錄下，可以使用ServletContextResource獲取檔案
Resource resource=new ServletContextResource(req.getServletContext(),"file/cardKindModel.xlsx"); file = resource.getFile();
二： 匯入資料功能
頁面：
jquery.form.js 需要引入這個js
$("#importExcel").ajaxSubmit({ url:"/card/uploadeCountsExcel?id="+id, type:"post", timeout: 1000*60*60, success:function(data){ $('#uploadp').hide(); // $("#excel_file").val(""); // console.log($(data).text()); var res = JSON.parse($(data).text()); if(res.code=="0"){ $.messager.alert('tip', '匯入成功'); $("#excel_file").val(""); }else if (res.code=="20001"){ $("#excel_file").val(""); $.messager.confirm('確認對話方塊', '匯入失敗，是否檢視詳情？', function(r){ if (r){ // window.location.href="/card/importError?id="+key; //跳轉到列表查詢頁 var iTop = (window.screen.availHeight - 30 - 750) / 2; var iLeft = (window.screen.availWidth - 10 - 1200) / 2; window.open("/card/importError?id="+key,"檢視詳情",'location=no,resizable=no,height=700,width=1200,innerWidth=1200,top='+iTop+',left='+iLeft); }else{ // alert("否"); //清除快取 } }); }else{ $.messager.alert('tip', '匯入失敗，系統內部錯誤！'); } } });
java
@ResponseBody
@RequestMapping(value ="/uploadeCountsExcel", method = {RequestMethod.POST})
public JSONObject uploadeCountsExcel(@RequestParam(value="filename") MultipartFile file,@RequestParam(value="id") String id, HttpServletRequest req){
JSONObject res = fileService.importExcel(file, id);
RedisClient.getInstance().put("progress_" + id, 100, 60 * 60);
return res;
}service
@Override
public JSONObject importExcel(MultipartFile file, String id) {
importExcelLogger.info("【匯入次數】 importExcel -->執行開始。。。，請求ID=" + id);
RedisClient.getInstance().put("progress_" + id, 1, 60 * 60);
JSONObject res = new JSONObject();
//執行校驗
String checkRes = checkFile(file);
if (checkRes != null) {
res.put("code", 10001);
res.put("msg", checkRes);
return res;
}
RedisClient.getInstance().put("progress_" + id, 5, 60 * 60);
//掃描資料
JSONObject exeImportRes = exeImport(file.getOriginalFilename(), file);
if(!"0".equals(exeImportRes.getString("code"))){
res.put("code",exeImportRes.getString("code"));
res.put("msg",exeImportRes.getString("msg"));
return res;
}
List<String[]> exeImportData = ( List<String[]>)exeImportRes.get("data");
RedisClient.getInstance().put("progress_" + id, 20, 60 * 60);
//分析資料
JSONObject applyDataRes = applyData(exeImportData,id);
RedisClient.getInstance().put("progress_" + id, 100, 60 * 60);
return applyDataRes;
}
@Override
public JSONArray queryImportError(String id) {
Object o = RedisClient.getInstance().get(id);
if(o==null){
return null;
}
JSONArray res= JSONArray.parseArray(o.toString());
if(res.size()<2){
return null;
}
res.remove(0);
return res;
}
private String checkFile(MultipartFile file) {
String msg = null;
if (file == null) {
msg = "上傳的檔案為空！";
return msg;
}
String fileName = file.getOriginalFilename();
if (fileName == null || fileName == "") {
msg = "檔名不能為空！";
return msg;
}
Long size = file.getSize();
if (size == 0) {
msg = "檔案大小應該大於0！";
return msg;
}
if(size>1024 * 1024){
msg = "檔案大小應該不超過1MB！";
return msg;
}
return msg;
}
private JSONObject exeImport(String name, MultipartFile file) {
JSONObject res = new JSONObject();
Workbook wb = null;
Sheet sheet = null;
Row row = null;
InputStream is = null;
String extName = name.substring(name.lastIndexOf("."));
try {
is = file.getInputStream();
} catch (IOException e) {
importExcelLogger.error("【匯入次數】 importExcel.exeImport -->無法根據提交的檔案獲取輸入流！", e);
res.put("code", "10002");
res.put("msg", "檔案解析異常");
return res;
}
try {
// if (".xls".equals(extName)) {
// wb = new HSSFWorkbook(is);
// } else if (".xlsx".equals(extName)) {
// wb = new XSSFWorkbook(is);
// }
if (".xlsx".equals(extName)) {
wb = new XSSFWorkbook(is);
}else{
importExcelLogger.error("【匯入次數】 importExcel.exeImport -->副檔名無效，只支援xlsx型別檔案解析！");
res.put("code", "10002");
res.put("msg", "檔案解析異常");
return res;
}
} catch (IOException e) {
importExcelLogger.error("【匯入次數】 importExcel.exeImport -->無法根據輸入流得到Excel WorkBook！", e);
res.put("code", "10002");
res.put("msg", "檔案解析異常");
return res;
}
if(wb==null){
importExcelLogger.error("【匯入次數】 importExcel.exeImport -->Excel WorkBook未被初始化！");
res.put("code", "10002");
res.put("msg", "檔案解析異常");
return res;
}
sheet = wb.getSheetAt(0);
int rows = sheet.getPhysicalNumberOfRows();
List<String[]> resList = new ArrayList<String[]>();
for(int j=0;j<rows;j++){
row = sheet.getRow(j);
// int colNum = row.getPhysicalNumberOfCells();
String[] rowContent = new String[8];
for (int i = 0; i < 5; i++) {
Cell cell = row.getCell(i);
if("error".equals(getCellValueByCell(cell))){
importExcelLogger.error("【匯入次數】 importExcel.exeImport -->存在未知的Cell型別！,RowNum="+j);
res.put("code", "10002");
res.put("msg", "檔案解析異常");
return res;
}
rowContent[i]=getCellValueByCell(cell);
if(i==2 && rowContent[i]!=null && !"".equals(rowContent[i]) && rowContent[i].indexOf(".")>-1){
String[] split = rowContent[i].split("[.]");
rowContent[i]=split[0];
}
}
resList.add(rowContent);
}
res.put("code","0");
res.put("data",resList);
return res;
}
private String getCellValueByCell(Cell cell){
String cellVal="";
if(cell==null||cell.toString().trim().equals("")){
return cellVal;
}else{
switch (cell.getCellType()){
case XSSFCell.CELL_TYPE_STRING:
cellVal=cell.getStringCellValue();
break;
case XSSFCell.CELL_TYPE_NUMERIC:
cellVal=String.valueOf(cell.getNumericCellValue());
break;
case XSSFCell.CELL_TYPE_BLANK:
cellVal="";
break;
default:
cellVal="error";
break;
}
return cellVal;
}
}分析資料是業務程式碼 就不上了。