完整的 总结了这两个java里常用的工具类
整合成两个通用的方法
为了取值更加方便我用了 json来 组装数据
其实 最新的poi3.9已经可以用一个方法来 读取excel2003和2007了
但是我为了业务逻辑更加清楚才分开来 ,如果 你觉得还可以重构的更好 可以 发出你的改良后的代码哦
import java.io.BufferedOutputStream; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.Date; import java.util.LinkedHashMap; import java.util.LinkedList; import java.util.List; import java.util.Map; import net.sf.json.JSONObject; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.poifs.filesystem.POIFSFileSystem; import org.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook; /** * Excel 操作工具类 其中涉及几个文件流操作和转换 * @author zqb * * 2013-8-2 */ public class ExcelUtil { private static POIFSFileSystem fs; private static HSSFWorkbook wb; private static HSSFSheet sheet; private static HSSFRow row; private static FileInputStream input; private static String[] excleTitle; public static boolean isNum(String str) { return str.matches("^[-+]?(([0-9]+)([.]([0-9]+))?|([.]([0-9]+))?)$"); } /** * 根据文件路径读取Excel数据内容 返回map * @param excelPath * @return */ public static Map<Integer, JSONObject> readExcelContent(String excelPath) { Map<Integer, JSONObject> contentJson = new LinkedHashMap<Integer, JSONObject>(); String excelStr = "";// excel 内容 try { input = new FileInputStream(new File(excelPath)); fs = new POIFSFileSystem(input); wb = new HSSFWorkbook(fs); sheet = wb.getSheetAt(0); int rowNum = sheet.getLastRowNum(); // 得到总行数 row = sheet.getRow(0);// 得到标题的内容对象。 int colNum = row.getPhysicalNumberOfCells();// 得到每行的列数。 excleTitle = new String[colNum]; for (int i = 0; i < colNum; i++) { excleTitle[i] = getStringCellValue(row.getCell((short) i)); } // 正文内容应该从第二行开始,第一行为表头的标题 for (int i = 1; i <= rowNum; i++) { row = sheet.getRow(i); int j = 0; while (j < colNum) { String v = ""; if (j + 1 == colNum) { String vs = getStringCellValue(row.getCell((short) j)) .trim(); if (vs.indexOf(".") > -1) { if (isNum(vs)) { // 是否是数字 if (vs.endsWith("0")) { v = vs.substring(0, vs.indexOf(".")); } } else { v = vs.trim(); } } else { v = vs.trim(); } excelStr += v; } else { String vs = getStringCellValue(row.getCell((short) j)) .trim() + "&"; if (vs.indexOf(".") > -1) { if (isNum(vs)) { // 是否是数字 if (vs.endsWith("0")) { // 处理用poi读取excel整数后面加.0的格式化 v = vs.substring(0, vs.indexOf(".")); } } else { v = vs.trim(); } } else { v = vs.trim(); } excelStr += v; } j++; } String excelstrArray[] = excelStr.split("&", -1); // 每行数据 Map<String, String> params = new LinkedHashMap<String, String>(); for (int k = 0; k < excelstrArray.length; k++) { params.put(excleTitle[k], excelstrArray[k]); } JSONObject jsonObject = JSONObject.fromObject(params); contentJson.put(i, jsonObject); // content.put(i, excelStr); excelStr = ""; } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { if (input != null) { input.close(); } } catch (IOException e) { e.printStackTrace(); } } return contentJson; } /** * 根据文件流读取Excel数据内容 返回map 2003 * @param input * @return */ public static Map<Integer, JSONObject> readExcelContent( InputStream input) {// 读取Excel数据内容 Map<Integer, JSONObject> contentJson = new LinkedHashMap<Integer, JSONObject>(); String excelStr = "";// excel 内容 try { fs = new POIFSFileSystem(input); wb = new HSSFWorkbook(fs); sheet = wb.getSheetAt(0); int rowNum = sheet.getLastRowNum(); // 得到总行数 row = sheet.getRow(0);// 得到标题的内容对象。 int colNum = row.getPhysicalNumberOfCells();// 得到每行的列数。 excleTitle = new String[colNum]; for (int i = 0; i < colNum; i++) { excleTitle[i] = getStringCellValue(row.getCell((short) i)); } // 正文内容应该从第二行开始,第一行为表头的标题 for (int i = 1; i <= rowNum; i++) { row = sheet.getRow(i); int j = 0; while (j < colNum) { String v = ""; if (j + 1 == colNum) { String vs = getStringCellValue(row.getCell((short) j)) .trim(); if (vs.indexOf(".") > -1) { if (isNum(vs)) { // 是否是数字 if (vs.endsWith("0")) { v = vs.substring(0, vs.indexOf(".")); } } else { v = vs.trim(); } } else { v = vs.trim(); } excelStr += v; } else { String vs = getStringCellValue(row.getCell((short) j)) .trim() + "&"; if (vs.indexOf(".") > -1) { if (isNum(vs)) { // 是否是数字 if (vs.endsWith("0")) { // 处理用poi读取excel整数后面加.0的格式化 v = vs.substring(0, vs.indexOf(".")); } } else { v = vs.trim(); } } else { v = vs.trim(); } excelStr += v; } j++; } String excelstrArray[] = excelStr.split("&", -1); // 每行数据 Map<String, String> params = new LinkedHashMap<String, String>(); for (int k = 0; k < excelstrArray.length; k++) { params.put(excleTitle[k], excelstrArray[k]); } JSONObject jsonObject = JSONObject.fromObject(params); contentJson.put(i, jsonObject); // content.put(i, excelStr); excelStr = ""; } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { if (input != null) { input.close(); } } catch (IOException e) { e.printStackTrace(); } } return contentJson; } /** * 读取Office 2007 excel * */ public static Map<Integer, JSONObject> read2007Excels(InputStream input) throws IOException { Map<Integer, JSONObject> contentJson = new LinkedHashMap<Integer, JSONObject>(); // 构造 XSSFWorkbook 对象,strPath 传入文件路径 XSSFWorkbook xwb = new XSSFWorkbook(input); // 读取第一章表格内容 XSSFSheet sheet = xwb.getSheetAt(0); Object value = null; XSSFRow row = null; XSSFCell cell = null; XSSFRow headerrow = sheet.getRow(0); // 表头 得到标题的内容对象 int colNum = headerrow.getPhysicalNumberOfCells();// 得到每行的列数。 excleTitle = new String[colNum]; for (int i = 0; i < colNum; i++) { excleTitle[i] = getStringCellValue(headerrow.getCell((short) i)); } // System.out.println(sheet.getPhysicalNumberOfRows()); // 循环内容项 不循环标题 所以+1 for (int i = sheet.getFirstRowNum() + 1; i <= sheet .getPhysicalNumberOfRows(); i++) { row = sheet.getRow(i); if (row == null) { continue; } List<String> linked = new LinkedList<String>(); for (int j = row.getFirstCellNum(); j < row.getLastCellNum(); j++) { cell = row.getCell(j); if (null != cell) { value = getStringCellValue(cell); } linked.add(StringUtil.stringIsNull(value)); } Map<String, String> params = new LinkedHashMap<String, String>(); for (int j = 0; j < linked.size(); j++) { params.put(excleTitle[j], linked.get(j)); } JSONObject jsonObject = JSONObject.fromObject(params); contentJson.put(i, jsonObject); } return contentJson; } /** * 根据(字节串(或叫字节数组)变成输入流的形式)读取Excel数据内容 返回map * @param input * @return */ public static Map<Integer, JSONObject> readExcelContent( ByteArrayInputStream input) {// 读取Excel数据内容 // Map<Integer, String> content = new HashMap<Integer, String>(); Map<Integer, JSONObject> contentJson = new LinkedHashMap<Integer, JSONObject>(); String excelStr = "";// excel 内容 try { // ByteArrayInputStream is = new ByteArrayInputStream( new byte[1000]); fs = new POIFSFileSystem(input); wb = new HSSFWorkbook(fs); sheet = wb.getSheetAt(0); int rowNum = sheet.getLastRowNum(); // 得到总行数 row = sheet.getRow(0);// 得到标题的内容对象。 int colNum = row.getPhysicalNumberOfCells();// 得到每行的列数。 excleTitle = new String[colNum]; for (int i = 0; i < colNum; i++) { excleTitle[i] = getStringCellValue(row.getCell((short) i)); } // 正文内容应该从第二行开始,第一行为表头的标题 for (int i = 1; i <= rowNum; i++) { row = sheet.getRow(i); int j = 0; while (j < colNum) { String v = ""; if (j + 1 == colNum) { String vs = getStringCellValue(row.getCell((short) j)) .trim(); if (vs.indexOf(".") > -1) { if (isNum(vs)) { // 是否是数字 if (vs.endsWith("0")) { v = vs.substring(0, vs.indexOf(".")); } } else { v = vs.trim(); } } else { v = vs.trim(); } excelStr += v; } else { String vs = getStringCellValue(row.getCell((short) j)) .trim() + "&"; if (vs.indexOf(".") > -1) { if (isNum(vs)) { // 是否是数字 if (vs.endsWith("0")) { // 处理用poi读取excel整数后面加.0的格式化 v = vs.substring(0, vs.indexOf(".")); } } else { v = vs.trim(); } } else { v = vs.trim(); } excelStr += v; } j++; } String excelstrArray[] = excelStr.split("&", -1); // 每行数据 Map<String, String> params = new LinkedHashMap<String, String>(); for (int k = 0; k < excelstrArray.length; k++) { params.put(excleTitle[k], excelstrArray[k]); } JSONObject jsonObject = JSONObject.fromObject(params); contentJson.put(i, jsonObject); // content.put(i, excelStr); excelStr = ""; } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { if (input != null) { input.close(); } } catch (IOException e) { e.printStackTrace(); } } return contentJson; } /** * 获取单元格数据内容为字符串类型的数据 * @param cell * @return */ private static String getStringCellValue(HSSFCell cell) { String strCell = ""; switch (cell.getCellType()) { case HSSFCell.CELL_TYPE_STRING: strCell = cell.getStringCellValue(); break; case HSSFCell.CELL_TYPE_NUMERIC: strCell = String.valueOf(cell.getNumericCellValue()); break; case HSSFCell.CELL_TYPE_BOOLEAN: strCell = String.valueOf(cell.getBooleanCellValue()); break; case HSSFCell.CELL_TYPE_BLANK: strCell = ""; break; default: strCell = ""; break; } if (strCell.equals("") || strCell == null) { return ""; } if (cell == null) { return ""; } return strCell; } /** * 获取单元格数据内容为日期类型的数据 * @param cell * @return */ private static String getDateCellValue(HSSFCell cell) { String result = ""; try { int cellType = cell.getCellType(); if (cellType == HSSFCell.CELL_TYPE_NUMERIC) { Date date = cell.getDateCellValue(); result = (date.getYear() + 1900) + "-" + (date.getMonth() + 1) + "-" + date.getDate(); } else if (cellType == HSSFCell.CELL_TYPE_STRING) { String date = getStringCellValue(cell); result = date.replaceAll("[年月]", "-").replace("日", "").trim(); } else if (cellType == HSSFCell.CELL_TYPE_BLANK) { result = ""; } } catch (Exception e) { System.out.println("日期格式不正确!"); e.printStackTrace(); } return result; } /** * 根据byte数组,生成文件 */ public static void getFile(byte[] bfile, String filePath, String fileName) { BufferedOutputStream bos = null; FileOutputStream fos = null; File file = null; try { File dir = new File(filePath); if (!dir.exists() && dir.isDirectory()) {// 判断文件目录是否存在 dir.mkdirs(); } file = new File(filePath + "\\" + fileName); fos = new FileOutputStream(file); bos = new BufferedOutputStream(fos); bos.write(bfile); } catch (Exception e) { e.printStackTrace(); } finally { if (bos != null) { try { bos.close(); } catch (IOException e1) { e1.printStackTrace(); } } if (fos != null) { try { fos.close(); } catch (IOException e1) { e1.printStackTrace(); } } } } // 从byte[]转file public static File getFileFromBytes(byte[] b, String outputFile) { BufferedOutputStream stream = null; File file = null; try { file = new File(outputFile); if (!file.exists() && file.isDirectory()) {// 判断文件目录是否存在 file.mkdirs(); //mkdirs() 可以在不存在的目录中创建文件夹。诸如:a\\b,既可以创建多级目录。 } FileOutputStream fstream = new FileOutputStream(file); stream = new BufferedOutputStream(fstream); stream.write(b); } catch (Exception e) { e.printStackTrace(); } finally { if (stream != null) { try { stream.close(); } catch (IOException e1) { e1.printStackTrace(); } } } return file; } /** * 读取Office 2007 excel * */ private static Map<Integer, JSONObject> read2007Excels(File file) throws IOException { Map<Integer, JSONObject> contentJson = new LinkedHashMap<Integer, JSONObject>(); // 构造 XSSFWorkbook 对象,strPath 传入文件路径 XSSFWorkbook xwb = new XSSFWorkbook(new FileInputStream(file)); // 读取第一章表格内容 XSSFSheet sheet = xwb.getSheetAt(0); Object value = null; XSSFRow row = null; XSSFCell cell = null; XSSFRow headerrow = sheet.getRow(0); // 表头 得到标题的内容对象 int colNum = headerrow.getPhysicalNumberOfCells();// 得到每行的列数。 excleTitle = new String[colNum]; for (int i = 0; i < colNum; i++) { excleTitle[i] = getStringCellValue(headerrow.getCell((short) i)); } // System.out.println(sheet.getPhysicalNumberOfRows()); // 循环内容项 不循环标题 所以+1 for (int i = sheet.getFirstRowNum() + 1; i <= sheet .getPhysicalNumberOfRows(); i++) { row = sheet.getRow(i); if (row == null) { continue; } List<String> linked = new LinkedList<String>(); for (int j = row.getFirstCellNum(); j < row.getLastCellNum(); j++) { cell = row.getCell(j); if (null != cell) { value = getStringCellValue(cell); } linked.add(StringUtil.stringIsNull(value)); } Map<String, String> params = new LinkedHashMap<String, String>(); for (int j = 0; j < linked.size(); j++) { params.put(excleTitle[j], linked.get(j)); } JSONObject jsonObject = JSONObject.fromObject(params); contentJson.put(i, jsonObject); } return contentJson; } /** * 获取单元格数据内容为字符串类型的数据 * * @param cell * @return */ private static String getStringCellValue(XSSFCell cell) { String strCell = ""; switch (cell.getCellType()) { case HSSFCell.CELL_TYPE_STRING: strCell = cell.getStringCellValue(); break; case HSSFCell.CELL_TYPE_NUMERIC: strCell = String.valueOf(cell.getNumericCellValue()); break; case HSSFCell.CELL_TYPE_BOOLEAN: strCell = String.valueOf(cell.getBooleanCellValue()); break; case HSSFCell.CELL_TYPE_BLANK: strCell = ""; break; default: strCell = ""; break; } if (strCell.equals("") || strCell == null) { return ""; } if (cell == null) { return ""; } return strCell; } /** * 获得指定文件的byte数组 */ public static byte[] getBytes(String filePath) { byte[] buffer = null; try { File file = new File(filePath); FileInputStream fis = new FileInputStream(file); ByteArrayOutputStream bos = new ByteArrayOutputStream(1000); byte[] b = new byte[1000]; int n; while ((n = fis.read(b)) != -1) { bos.write(b, 0, n); } fis.close(); bos.close(); buffer = bos.toByteArray(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return buffer; }
调用的时候 根据文件后缀名分别调用不同的方法就行
测试
Map<Integer, JSONObject> content = new LinkedHashMap<Integer, JSONObject>(); if (version.equals("2003")) { content = ExcelUtil.readExcelContent(fileinput); } else if (version.equals("2007")) { content = ExcelUtil.read2007Excels(fileinput); } for (Map.Entry<Integer, JSONObject> entry : content.entrySet()) { System.out.println(entry.getValue().get("excel表头的名称"))); //这个循环里可以把这些值 组装到一个 po里 //这样取值更加方便 //比如 Po p=new Po(); po.setEntityName(entry.getValue().get("excel表头的名称"))); //....具体怎么扩展 更加适合你的项目 当然要你们自己思考了 呵呵... }
这样可以获取对应表头的值