一、使用jxl解析excel。该方法不支持xlsx格式文件。只支持xls文件
1.在pom.xml中导入包
<dependency> <groupId>net.sourceforge.jexcelapi</groupId> <artifactId>jxl</artifactId> <version>2.6.12</version> </dependency>
2.demo如下
import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import com.cykj.domain.InsInfo; import com.cykj.domain.LinkInfo; import com.cykj.util.FileUtil; import jxl.Sheet; import jxl.Workbook; public class SynFile { public static void main(String[] args) { SynFile synFile = new SynFile(); //synFile.readFile("D:/file/test.xls", "test.xls"); } public Map<String, Object> readFile(File file, String fileName) { Map<String, Object> map = new HashMap<>(); try { FileInputStream fis = null; String fileExtName = FileUtil.getExtensionName(fileName); if (fileExtName.equals("xls")) { // 处理excel类型的文件 BufferedInputStream bos = null; try { // 转换文件流 fis = new FileInputStream(file); bos = new BufferedInputStream(fis); // 处理Excel文件 map = readAgentXLS(bos); } catch (Exception e) { e.printStackTrace(); //Log.error("【扫码支付数据同步入库】代理商文件：【" + fileName + "】读取出现异常，异常信息：" + e.getMessage()); } finally { // 关闭流 try { if (bos != null) { bos.close(); bos = null; } if (fis != null) { fis.close(); fis = null; } } catch (Exception e) { e.printStackTrace(); throw e; } } } } catch (Exception e) { e.printStackTrace(); //Log.error("【扫码支付数据同步入库】读取代理商文件:【" + fileName + "】异常!!!详细:" + e.getMessage()); } return map; } public Map<String, Object> readAgentXLS(BufferedInputStream inputStream) throws Exception { Map<String, Object> map = new HashMap<>(); if (inputStream == null) { throw new Exception("未获取到文件"); } List<LinkInfo> linkList = new ArrayList<LinkInfo>(); List<InsInfo> insList = new ArrayList<>(); Workbook workBook = null; Sheet sheet = null; int cols = 0; int rows = 0; workBook = Workbook.getWorkbook(inputStream); if (null != workBook) { sheet = workBook.getSheet(0); cols = sheet.getColumns(); rows = sheet.getRows(); } try { List<String> content = null; for (int i = 1; i < rows; i++) { content = new ArrayList<String>(); // 从第一列开始循环 for (int j = 0; j < cols; j++) { content.add(sheet.getCell(j, i).getContents());// 添加每列的内容到集合中去 } InsInfo insInfo = new InsInfo(); LinkInfo linkInfo = new LinkInfo(); insInfo.setInsName(content.get(0)); insInfo.setInsType(checkInteger(content.get(1))); insInfo.setProvince(content.get(2)); insInfo.setCity(content.get(3)); insInfo.setDistrict(content.get(4)); insInfo.setInsAddress(content.get(5)); insInfo.setRecommendMan(content.get(6)); insInfo.setRemark(content.get(7)); insInfo.setInsPhone(content.get(8)); linkInfo.setLinkName(content.get(9)); linkInfo.setLinkGender(checkInteger(content.get(10))); linkInfo.setLinkPosition(content.get(11)); linkInfo.setLinkMobile(content.get(12)); insList.add(insInfo); linkList.add(linkInfo); } map.put("ins", insList); map.put("link", linkList); return map; } catch (Exception e) { e.printStackTrace(); throw e; } finally { if (null != workBook) { workBook.close(); } if (inputStream != null) { inputStream.close(); } workBook = null; inputStream = null; } } public Integer checkInteger(String str) throws Exception { if (str == null || str == "") { return 0; } else { return Integer.parseInt(str); } } }
说明：在代码中解析excel，每一列都包括了insInfo和linkInfo两个实体类。将每一列的实体类封装到list中返回map。
二、使用poi解析excel,支持xls和xlsx两种格式。推举使用
1.准备jar包
<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.14</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.5</version> </dependency>
2.准备demo
import org.apache.log4j.Logger; 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 org.springframework.web.multipart.MultipartFile; /** * excel读写工具类 */ public class PoiExcel { private static Logger logger = Logger.getLogger(PoiExcel.class); private final static String xls = "xls"; private final static String xlsx = "xlsx"; /** * 读入excel文件，解析后返回 * @param file * @throws IOException */ public static List<String[]> readExcel(MultipartFile file) throws IOException{ //检查文件 checkFile(file); //获得Workbook工作薄对象 Workbook workbook = getWorkBook(file); //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 List<String[]> list = new ArrayList<String[]>(); if(workbook != null){ for(int sheetNum = 0;sheetNum < workbook.getNumberOfSheets();sheetNum++){ //获得当前sheet工作表 Sheet sheet = workbook.getSheetAt(sheetNum); if(sheet == null){ continue; } //获得当前sheet的开始行 int firstRowNum = sheet.getFirstRowNum(); //获得当前sheet的结束行 int lastRowNum = sheet.getLastRowNum(); //循环除了第一行的所有行 for(int rowNum = firstRowNum+1;rowNum <= lastRowNum;rowNum++){ //获得当前行 Row row = sheet.getRow(rowNum); if(row == null){ continue; } //获得当前行的开始列 int firstCellNum = row.getFirstCellNum(); //获得当前行的列数 int lastCellNum = row.getPhysicalNumberOfCells(); String[] cells = new String[row.getPhysicalNumberOfCells()]; //循环当前行 for(int cellNum = firstCellNum; cellNum < lastCellNum;cellNum++){ Cell cell = row.getCell(cellNum); cells[cellNum] = getCellValue(cell); } list.add(cells); } } workbook.close(); } return list; } public static void checkFile(MultipartFile file) throws IOException{ //判断文件是否存在 if(null == file){ logger.error("文件不存在！"); throw new FileNotFoundException("文件不存在！"); } //获得文件名 String fileName = file.getOriginalFilename(); //判断文件是否是excel文件 if(!fileName.endsWith(xls) && !fileName.endsWith(xlsx)){ logger.error(fileName + "不是excel文件"); throw new IOException(fileName + "不是excel文件"); } } public static Workbook getWorkBook(MultipartFile file) { //获得文件名 String fileName = file.getOriginalFilename(); //创建Workbook工作薄对象，表示整个excel Workbook workbook = null; try { //获取excel文件的io流 InputStream is = file.getInputStream(); //根据文件后缀名不同(xls和xlsx)获得不同的Workbook实现类对象 if(fileName.endsWith(xls)){ //2003 workbook = new HSSFWorkbook(is); }else if(fileName.endsWith(xlsx)){ //2007 workbook = new XSSFWorkbook(is); } } catch (IOException e) { logger.info(e.getMessage()); } return workbook; } public static String getCellValue(Cell cell){ String cellValue = ""; if(cell == null){ return cellValue; } //把数字当成String来读，避免出现1读成1.0的情况 if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC){ cell.setCellType(Cell.CELL_TYPE_STRING); } //判断数据的类型 switch (cell.getCellType()){ case Cell.CELL_TYPE_NUMERIC: //数字 cellValue = String.valueOf(cell.getNumericCellValue()); break; case Cell.CELL_TYPE_STRING: //字符串 cellValue = String.valueOf(cell.getStringCellValue()); break; case Cell.CELL_TYPE_BOOLEAN: //Boolean cellValue = String.valueOf(cell.getBooleanCellValue()); break; case Cell.CELL_TYPE_FORMULA: //公式 cellValue = String.valueOf(cell.getCellFormula()); break; case Cell.CELL_TYPE_BLANK: //空值 cellValue = ""; break; case Cell.CELL_TYPE_ERROR: //故障 cellValue = "非法字符"; break; default: cellValue = "未知类型"; break; } return cellValue; } }
说明：解析excel后返回一个list，list中封装了String数组，每个String数组就是excel的一列数据。
ps:亲测可用