本文主要描述,Springboot-mybatis框架下上傳excel,並將之導入mysql數據庫的過程,如果用戶id已存在,則進行更新修改數據庫中該項信息,由於用到的是前後端分離技術,這裡記錄的主要是後端java部分,通過與前端接口進行對接實現功能,使用layui等前端框架與之對接,也可以自己寫前端代碼,本文以Controller開始,從導入過程開始講述,其中包括字典表的轉換
1.在pom.xml文件中導入註解,主要利用POI
<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.9</version> </dependency> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency>
2.Controller接口
@PostMapping("/save") public String addUser(@RequestParam("file") MultipartFile file) { String fileName = file.getOriginalFilename(); try { return sysService.batchImport(fileName, file); } catch (MyException e) { e.printStackTrace(); return e.getMessage(); }catch(Exception e){ e.printStackTrace(); return "文件異常,導入失敗"; } }3.服務層接口
boolean import(String fileName, MultipartFile file) throws Exception;
4.業務層實現類
@Transactional(readOnly = false,rollbackFor = Exception.class) @Override public boolean import(String fileName, MultipartFile file) throws Exception { Map<String, Integer> departmentMap = findDepartment(); Map<String, Integer> roleMap = findRole(); boolean notNull = false; List<User> userList = new ArrayList<User>(); if (!fileName.matches("^.+//.(?i)(xls)$") && !fileName.matches("^.+//.(?i)(xlsx)$")) { throw new MyException("上傳文件格式不正確"); } boolean isExcel2003 = true; if (fileName.matches("^.+//.(?i)(xlsx)$")) { isExcel2003 = false; } InputStream is = file.getInputStream(); Workbook wb = null; if (isExcel2003) { wb = new HSSFWorkbook(is); } else { wb = new XSSFWorkbook(is); } Sheet sheet = wb.getSheetAt(0); if(sheet!=null){ notNull = true; } User user; for (int r = 1; r <= sheet.getLastRowNum(); r++) { Row row = sheet.getRow(r); if (row == null){ continue; } user = new User(); if( row.getCell(0).getCellType() !=1){ throw new MyException("導入失敗(第"+(r+1)+"行,ID單元格格式請設為文本格式)"); } String id = row.getCell(0).getStringCellValue(); if(id==null || id.isEmpty()){ throw new MyException("導入失敗(第"+(r+1)+"行,ID未填寫)"); } String name = row.getCell(1).getStringCellValue(); if(name==null || name.isEmpty()){ throw new MyException("導入失敗(第"+(r+1)+"行,姓名未填寫)"); } String department = row.getCell(2).getStringCellValue(); if(departmentMap.get(department)==null){ throw new MyException("導入失敗(第"+(r+1)+"行,不存在此單位或單位未填寫)"); } String role = row.getCell(3).getStringCellValue(); if(roleMap.get(role)==null){ throw new MyException("導入失敗(第"+(r+1)+"行,不存在此角色或角色未填寫)"); } Date date; if(row.getCell(4).getCellType() !=0){ throw new MyException("導入失敗(第"+(r+1)+"行,入職日期格式不正確或未填寫)"); }else{ date = row.getCell(4).getDateCellValue(); } user.setId(id); user.setName(name); user.setDepartmentId((int) departmentMap.get(department)); user.setRoleId((int) roleMap.get(role)); user.setDate(date); userList.add(user); } for (User user : userList) { String id = user.getId(); int cnt = userMapper.selectById(id); if (cnt == 0) { userMapper.addUser(user); } else { userMapper.updateUserById(user); } } return notNull; }總結
以上所述是小編給大家介紹的Springboot上傳excel並將表格數據導入或更新mySql數據庫,希望對大家有所幫助,如果大家有任何疑問請給我留言,小編會及時回復大家的。在此也非常感謝大家對武林網網站的支持!