1，maven配置
1 <dependency>
2 <groupId>org.apache.poi</groupId>
3 <artifactId>poi-ooxml</artifactId>
4 <version>${poi.version}</version>
5 </dependency>
2，Controller层
1 /**
2 * Excel导入数据 3 * @return
4 */
5 @ResponseBody 6 @RequestMapping(value="importExcel", method={RequestMethod.GET, RequestMethod.POST}) 7 public String importExcel(HttpServletRequest request, String name) { 8 JSONObject result = new JSONObject(); 9 result.put("code", 0); 10 result.put("msg", "导入成功！"); 11 //初始化解析器
12 CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getServletContext()); 13 //解析form中是否有enctype="multipart/form-data"
14 try { 15 if (multipartResolver.isMultipart(request)) { 16 MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; 17 Iterator iterator = multipartRequest.getFileNames(); 18 while (iterator.hasNext()) { 19 MultipartFile multipartFile = multipartRequest.getFile(iterator.next().toString()); 20 List<String[]> data = GhPOIUtils.readExcel(multipartFile); 21 Method method = IExportExcelService.class.getDeclaredMethod(name + "Import", new Class[]{List.class}); 22 method.invoke(exportExcelService, data); 23 } 24 } 25 } catch(Exception e) { 26 result.put("code", -1); 27 result.put("msg", e.getMessage()); 28 } 29 return result.toString(); 30 }
3，Util
1 package com.smart.produce.core.utils.comm; 2
3 import java.io.FileNotFoundException; 4 import java.io.IOException; 5 import java.io.InputStream; 6 import java.util.ArrayList; 7 import java.util.List; 8
9 import org.apache.log4j.Logger; 10 import org.apache.poi.hssf.usermodel.HSSFWorkbook; 11 import org.apache.poi.ss.usermodel.Cell; 12 import org.apache.poi.ss.usermodel.Row; 13 import org.apache.poi.ss.usermodel.Sheet; 14 import org.apache.poi.ss.usermodel.Workbook; 15 import org.apache.poi.xssf.usermodel.XSSFWorkbook; 16 import org.springframework.web.multipart.MultipartFile; 17 /**
18 * excel读写工具类 */
19 public class GhPOIUtils { 20 private static Logger logger = Logger.getLogger(GhPOIUtils.class); 21 private final static String xls = "xls"; 22 private final static String xlsx = "xlsx"; 23
24 public static void checkFile(MultipartFile file) throws IOException{ 25 //判断文件是否存在
26 if(null == file){ 27 logger.error("文件不存在！"); 28 throw new FileNotFoundException("文件不存在！"); 29 } 30 //获得文件名
31 String fileName = file.getOriginalFilename(); 32 //判断文件是否是excel文件
33 if(!fileName.endsWith(xls) && !fileName.endsWith(xlsx)){ 34 logger.error(fileName + "不是excel文件"); 35 throw new IOException(fileName + "不是excel文件"); 36 } 37 } 38
39 public static Workbook getWorkBook(MultipartFile file) { 40 //获得文件名
41 String fileName = file.getOriginalFilename(); 42 //创建Workbook工作薄对象，表示整个excel
43 Workbook workbook = null; 44 try { 45 //获取excel文件的io流
46 InputStream is = file.getInputStream(); 47 //根据文件后缀名不同(xls和xlsx)获得不同的Workbook实现类对象
48 if(fileName.endsWith(xls)){ 49 //2003
50 workbook = new HSSFWorkbook(is); 51 }else if(fileName.endsWith(xlsx)){ 52 //2007
53 workbook = new XSSFWorkbook(is); 54 } 55 } catch (IOException e) { 56 logger.info(e.getMessage()); 57 } 58 return workbook; 59 } 60
61 public static String getCellValue(Cell cell){ 62 String cellValue = ""; 63 if(cell == null){ 64 return cellValue; 65 } 66 //把数字当成String来读，避免出现1读成1.0的情况
67 if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC){ 68 cell.setCellType(Cell.CELL_TYPE_STRING); 69 } 70 //判断数据的类型
71 switch (cell.getCellType()){ 72 case Cell.CELL_TYPE_NUMERIC: //数字
73 cellValue = String.valueOf(cell.getNumericCellValue()); 74 break; 75 case Cell.CELL_TYPE_STRING: //字符串
76 cellValue = String.valueOf(cell.getStringCellValue()); 77 break; 78 case Cell.CELL_TYPE_BOOLEAN: //Boolean
79 cellValue = String.valueOf(cell.getBooleanCellValue()); 80 break; 81 case Cell.CELL_TYPE_FORMULA: //公式
82 cellValue = String.valueOf(cell.getCellFormula()); 83 break; 84 case Cell.CELL_TYPE_BLANK: //空值
85 cellValue = ""; 86 break; 87 case Cell.CELL_TYPE_ERROR: //故障
88 cellValue = "非法字符"; 89 break; 90 default: 91 cellValue = "未知类型"; 92 break; 93 } 94 return cellValue; 95 } 96
97 /**
98 * 读入excel文件，解析后返回 99 * @param file 100 */
101 public static List<String[]> readExcel(MultipartFile file) throws IOException{ 102 //检查文件
103 checkFile(file); 104 //获得Workbook工作薄对象
105 Workbook workbook = getWorkBook(file); 106 //创建返回对象，把每行中的值作为一个数组，所有行作为一个集合返回
107 List<String[]> list = new ArrayList<String[]>(); 108 if(workbook != null){ 109 for(int sheetNum = 0;sheetNum < workbook.getNumberOfSheets();sheetNum++){ 110 //获得当前sheet工作表
111 Sheet sheet = workbook.getSheetAt(sheetNum); 112 if(sheet == null){ 113 continue; 114 } 115 //获得当前sheet的开始行
116 int firstRowNum = sheet.getFirstRowNum(); 117 //获得当前sheet的结束行
118 int lastRowNum = sheet.getLastRowNum(); 119 //循环所有行
120 for(int rowNum = firstRowNum;rowNum <= lastRowNum;rowNum++){ 121 //获得当前行
122 Row row = sheet.getRow(rowNum); 123 if(row == null){ 124 continue; 125 } 126 //获得当前行的开始列
127 int firstCellNum = row.getFirstCellNum(); 128 //获得当前行的列数
129 int lastCellNum = row.getPhysicalNumberOfCells(); 130 String[] cells = new String[row.getPhysicalNumberOfCells()]; 131 //循环当前行
132 for(int cellNum = firstCellNum; cellNum < lastCellNum;cellNum++){ 133 Cell cell = row.getCell(cellNum); 134 cells[cellNum] = getCellValue(cell); 135 } 136 list.add(cells); 137 } 138 } 139 workbook.close(); 140 } 141 return list; 142 } 143 }