工具类
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import java.io.IOException; import java.io.InputStream; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.List; public class ImportExcelUntil { private final static String excel2003L =".xls"; //2003- 版本的excel private final static String excel2007U =".xlsx"; //2007+ 版本的excel /** * 描述:获取IO流中的数据,组装成List<List<Object>>对象 * @param in,fileName * @return * @throws IOException */ public List<List<Object>> getListByExcel(InputStream in,String fileName) throws Exception{ List<List<Object>> list = null; //创建Excel工作薄 Workbook work = this.getWorkbook(in,fileName); if(null == work){ throw new Exception("创建Excel工作薄为空!"); } Sheet sheet = null; Row row = null; Cell cell = null; list = new ArrayList<List<Object>>(); //遍历Excel中所有的sheet for (int i = 0; i < work.getNumberOfSheets(); i++) { sheet = work.getSheetAt(i); if(sheet==null){continue;} //遍历当前sheet中的所有行 for (int j = sheet.getFirstRowNum(); j <= sheet.getLastRowNum(); j++) { row = sheet.getRow(j);//限制excel表格中第一行不保留 if(row==null||row.getFirstCellNum()==j){continue;} //||row.getFirstCellNum()==j //遍历所有的列 List<Object> li = new ArrayList<Object>(); for (int y = row.getFirstCellNum(); y < row.getLastCellNum(); y++) { cell = row.getCell(y); li.add(this.getCellValue(cell)); } list.add(li); } } in.close(); return list; } /** * 描述:根据文件后缀,自适应上传文件的版本 * @param inStr,fileName * @return * @throws Exception */ public Workbook getWorkbook(InputStream inStr,String fileName) throws Exception{ Workbook wb = null; String fileType = fileName.substring(fileName.lastIndexOf(".")); if(excel2003L.equals(fileType)){ wb = new HSSFWorkbook(inStr); //2003- }else if(excel2007U.equals(fileType)){ wb = new XSSFWorkbook(inStr); //2007+ }else{ throw new Exception("解析的文件格式有误!"); } return wb; } /** * 描述:对表格中数值进行格式化 * @param cell * @return */ public Object getCellValue(Cell cell){ Object value = null; DecimalFormat df = new DecimalFormat("0"); //格式化number String字符 SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd HH:mm:ss"); //日期格式化 DecimalFormat df2 = new DecimalFormat("0.00"); //格式化数字 switch (cell.getCellType()) { case Cell.CELL_TYPE_STRING: value = cell.getRichStringCellValue().getString(); break; case Cell.CELL_TYPE_NUMERIC: if("General".equals(cell.getCellStyle().getDataFormatString())){ value = df.format(cell.getNumericCellValue()); }else if("m/d/yy".equals(cell.getCellStyle().getDataFormatString())){ value = sdf.format(cell.getDateCellValue()); }else{ value = df2.format(cell.getNumericCellValue()); } break; case Cell.CELL_TYPE_BOOLEAN: value = cell.getBooleanCellValue(); break; case Cell.CELL_TYPE_BLANK: value = ""; break; default: break; } return value; } } |
实体类
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | package com.hachuizi.pojo; public class User { private String id; private String name; private String password; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } } |
控制器
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | @RequestMapping("/importExcelOk") public String ImportExcelOk(HttpServletRequest request,Model model, HttpServletResponse response)throws Exception{ System.out.println("开始导入excel"); MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; MultipartFile file = multipartRequest.getFile("file"); InputStream in = file.getInputStream(); List<List<Object>> excelData =new ImportExcelUntil().getListByExcel(in,file.getOriginalFilename()); in.close(); //End--excelData获取到数据 User user = new User(); //获取结果开始插入数据库 for(int i=0;i<excelData.size();i++){ user.setId(excelData.get(i).get(0).toString()); user.setName(excelData.get(i).get(1).toString()); user.setPassword(excelData.get(i).get(2).toString()); long res = userService.insert(user); System.out.println(res); } return "importExcel";//返回页面 } |
JSP页面:
1 2 3 4 5 | <form action="user/importExcelOk" <strong>method="post" enctype="multipart/form-data" </strong>> Excel导入: <input type="file" name="file"> <input type="submit" value="提交"> </form> |