Springboot怎么上传excel并将表格数据导入或更新mySql数据库

Springboot怎么上传excel并将表格数据导入或更新mySql数据库

1.在pom.xml文件中导入注解，主要利用POI

org.apache.poi poi-ooxml 3.9 commons-fileupload commons-fileupload 1.3.1 commons-io commons-io 2.4 登录后复制

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 "文件异常,导入失败"; } }登录后复制

3.服务层接口

boolean import(String fileName, MultipartFile file) throws Exception;登录后复制

4.业务层实现类

@Transactional(readOnly = false,rollbackFor = Exception.class) @Override public boolean import(String fileName, MultipartFile file) throws Exception { Map departmentMap = findDepartment(); Map roleMap = findRole(); boolean notNull = false; List userList = new ArrayList(); if (!fileName.matches("^.+\\.(?i)(xls)$") && !fileName.matches("^.+\\.(?i)(xlsx)$")) { throw new MyException("上传文件格式不正确"); } 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("导入失败(第"+(r+1)+"行,ID单元格格式请设为文本格式)"); } String id = row.getCell(0).getStringCellValue(); if(id==null || id.isEmpty()){ throw new MyException("导入失败(第"+(r+1)+"行,ID未填写)"); } String name = row.getCell(1).getStringCellValue(); if(name==null || name.isEmpty()){ throw new MyException("导入失败(第"+(r+1)+"行,姓名未填写)"); } String department = row.getCell(2).getStringCellValue(); if(departmentMap.get(department)==null){ throw new MyException("导入失败(第"+(r+1)+"行,不存在此单位或单位未填写)"); } String role = row.getCell(3).getStringCellValue(); if(roleMap.get(role)==null){ throw new MyException("导入失败(第"+(r+1)+"行,不存在此角色或角色未填写)"); } Date date; if(row.getCell(4).getCellType() !=0){ throw new MyException("导入失败(第"+(r+1)+"行,入职日期格式不正确或未填写)"); }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; }登录后复制

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