java 采用apache poi处理excel文件兼容2003及2007

• 需要引入的jar包 

poi-3.13.jar、poi-ooxml-3.13.jar、poi-ooxml-schemas-3.13.jar、xmlbeans-2.6.0.jar 。

• maven工程引入方式

<dependency><groupId>org.apache.poi</groupId><artifactId>poi</artifactId><version>3.12</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>3.12</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-excelant</artifactId><version>3.12</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-scratchpad</artifactId><version>3.12</version></dependency>

• 读取Excel文件

package cn.grap.excel;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.util.ArrayList;import java.util.List;import org.apache.poi.hssf.usermodel.HSSFCell;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;/** 利用开源组件POI3.0.2动态导出EXCEL文档 转载时请保留以下信息，注明出处！ *  * @author gaol * @version v1.0 * @description 读取exe文件 */public class ImportExecl {/** 总行数 */private int totalRows = 0;/** 总列数 */private int totalCells = 0;/** 错误信息 */private String errorInfo;/** 构造方法 */public ImportExecl() {}/** *  * @描述：得到总行数 */public int getTotalRows() {return totalRows;}/** *  * @描述：得到总列数 */public int getTotalCells() {return totalCells;}/** *  * @描述：得到错误信息 */public String getErrorInfo() {return errorInfo;}/** *  * @描述：验证excel文件 */public boolean validateExcel(String filePath) throws Exception{/** 检查文件名是否为空或者是否是Excel格式的文件 */if (filePath == null || !(isExcel2003(filePath) || isExcel2007(filePath))) {errorInfo = "文件名不是excel格式";throw new Exception("文件名不是excel格式");}/** 检查文件是否存在 */File file = new File(filePath);if (file == null || !file.exists()) {errorInfo = "文件不存在";throw new Exception("文件不存在");}return true;}/** *  * @描述：根据文件名读取excel文件 *  */public List<List<String>> read(String filePath) throws Exception{List<List<String>> dataLst = new ArrayList<List<String>>();InputStream is = null;/** 验证文件是否合法 */if (!validateExcel(filePath)) {System.out.println(errorInfo);return null;}try {/** 判断文件的类型，是2003还是2007 */boolean isExcel2003 = true;if (isExcel2007(filePath)) {isExcel2003 = false;}/** 调用本类提供的根据流读取的方法 */File file = new File(filePath);is = new FileInputStream(file);dataLst = read(is, isExcel2003);is.close();} catch (Exception ex) {ex.printStackTrace();throw new Exception("读取Excel文件出错!");} finally {if (is != null) {try {is.close();} catch (IOException e) {is = null;e.printStackTrace();}}}/** 返回最后读取的结果 */return dataLst;}/** *  * @描述：根据流读取Excel文件 *  */public List<List<String>> read(InputStream inputStream, boolean isExcel2003) throws Exception{List<List<String>> dataLst = null;try {/** 根据版本选择创建Workbook的方式 */Workbook wb = null;if (isExcel2003) {wb = new HSSFWorkbook(inputStream);} else {wb = new XSSFWorkbook(inputStream);}dataLst = read(wb);} catch (IOException e) {e.printStackTrace();throw new Exception("读取Excel文件出错!");}return dataLst;}/** *  * @描述：读取数据 */private List<List<String>> read(Workbook wb) {List<List<String>> dataLst = new ArrayList<List<String>>();/** 得到第一个shell */Sheet sheet = wb.getSheetAt(0);/** 得到Excel的行数 */this.totalRows = sheet.getPhysicalNumberOfRows();/** 得到Excel的列数 */if (this.totalRows >= 1 && sheet.getRow(0) != null) {this.totalCells = sheet.getRow(0).getPhysicalNumberOfCells();}/** 循环Excel的行 */for (int r = 0; r < this.totalRows; r++) {Row row = sheet.getRow(r);if (row == null) {continue;}List<String> rowLst = new ArrayList<String>();/** 循环Excel的列 */for (int c = 0; c < this.getTotalCells(); c++) {Cell cell = row.getCell(c);String cellValue = "";if (null != cell) {// 以下是判断数据的类型switch (cell.getCellType()) {case HSSFCell.CELL_TYPE_NUMERIC: // 数字cellValue = cell.getNumericCellValue() + "";break;case HSSFCell.CELL_TYPE_STRING: // 字符串cellValue = cell.getStringCellValue();break;case HSSFCell.CELL_TYPE_BOOLEAN: // BooleancellValue = cell.getBooleanCellValue() + "";break;case HSSFCell.CELL_TYPE_FORMULA: // 公式cellValue = cell.getCellFormula() + "";break;case HSSFCell.CELL_TYPE_BLANK: // 空值cellValue = "";break;case HSSFCell.CELL_TYPE_ERROR: // 故障cellValue = "非法字符";break;default:cellValue = "未知类型";break;}}rowLst.add(cellValue);}/** 保存第r行的第c列 */dataLst.add(rowLst);}return dataLst;}/** *  * @描述：是否是2003的excel，返回true是2003 *  * @返回值：boolean */public static boolean isExcel2003(String filePath) {return filePath.matches("^.+\\.(?i)(xls)$");}/** *  * @描述：是否是2007的excel，返回true是2007 *  * @返回值：boolean */public static boolean isExcel2007(String filePath) {return filePath.matches("^.+\\.(?i)(xlsx)$");}/** * * @描述：main测试方法 * */public static void main(String[] args) throws Exception {ImportExecl poi = new ImportExecl();// List<List<String>> list = poi.read("d:/aaa.xls");List<List<String>> list = poi.read("E://a.xls");if (list != null) {for (int i = 0; i < list.size(); i++) {System.out.print("第" + (i) + "行");List<String> cellList = list.get(i);for (int j = 0; j < cellList.size(); j++) {// System.out.print(" 第" + (j + 1) + "列值：");System.out.print(" " + cellList.get(j));}System.out.println();}}}}

• 生成excel文件

package cn.grap.excel;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.OutputStream;import java.lang.reflect.Field;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Collection;import java.util.Date;import java.util.Iterator;import java.util.List;import java.util.regex.Matcher;import java.util.regex.Pattern;import javax.swing.JOptionPane;import org.apache.poi.hssf.usermodel.HSSFCell;import org.apache.poi.hssf.usermodel.HSSFCellStyle;import org.apache.poi.hssf.usermodel.HSSFClientAnchor;import org.apache.poi.hssf.usermodel.HSSFComment;import org.apache.poi.hssf.usermodel.HSSFFont;import org.apache.poi.hssf.usermodel.HSSFPatriarch;import org.apache.poi.hssf.usermodel.HSSFRichTextString;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.hssf.util.HSSFColor;/** * 利用开源组件POI3.0.2动态导出EXCEL文档 转载时请保留以下信息，注明出处！ *  * @author gaol * @version v1.0 * @param <T> *            应用泛型，代表任意一个符合javabean风格的类 *            注意这里为了简单起见，boolean型的属性xxx的get器方式为getXxx(),而不是isXxx() *            byte[]表jpg格式的图片数据 */public class ExportExcel<T> {private HSSFWorkbook workbook;public void exportExcel(Collection<T> dataset, OutputStream out) {exportExcel("测试POI导出EXCEL文档", null, dataset, out, "yyyy-MM-dd");}public void exportExcel(String[] headers, Collection<T> dataset, OutputStream out) {exportExcel("测试POI导出EXCEL文档", headers, dataset, out, "yyyy-MM-dd");}public void exportExcel(String[] headers, Collection<T> dataset, OutputStream out, String pattern) {exportExcel("测试POI导出EXCEL文档", headers, dataset, out, pattern);}/** * 这是一个通用的方法，利用了JAVA的反射机制，可以将放置在JAVA集合中并且符号一定条件的数据以EXCEL 的形式输出到指定IO设备上 * * @param title *            表格标题名 * @param headers *            表格属性列名数组 * @param dataset *            需要显示的数据集合,集合中一定要放置符合javabean风格的类的对象。此方法支持的 *            javabean属性的数据类型有基本数据类型及String,Date,byte[](图片数据) * @param out *            与输出设备关联的流对象，可以将EXCEL文档导出到本地文件或者网络中 * @param pattern *            如果有时间数据，设定输出格式。默认为"yyy-MM-dd" */@SuppressWarnings({ "deprecation" })public void exportExcel(String title, String[] headers, Collection<T> dataset, OutputStream out, String pattern) {workbook = new HSSFWorkbook();// 生成一个表格HSSFSheet sheet = workbook.createSheet(title);// 设置表格默认列宽度为15个字节sheet.setDefaultColumnWidth((short) 15);// 生成一个样式HSSFCellStyle style = workbook.createCellStyle();// 设置这些样式style.setFillForegroundColor(HSSFColor.SKY_BLUE.index);style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);style.setBorderBottom(HSSFCellStyle.BORDER_THIN);style.setBorderLeft(HSSFCellStyle.BORDER_THIN);style.setBorderRight(HSSFCellStyle.BORDER_THIN);style.setBorderTop(HSSFCellStyle.BORDER_THIN);style.setAlignment(HSSFCellStyle.ALIGN_CENTER);// 生成一个字体HSSFFont font = workbook.createFont();font.setColor(HSSFColor.VIOLET.index);font.setFontHeightInPoints((short) 12);font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 把字体应用到当前的样式style.setFont(font);// 生成并设置另一个样式HSSFCellStyle style2 = workbook.createCellStyle();style2.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index);style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);style2.setBorderRight(HSSFCellStyle.BORDER_THIN);style2.setBorderTop(HSSFCellStyle.BORDER_THIN);style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 生成另一个字体HSSFFont font2 = workbook.createFont();font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);// 把字体应用到当前的样式style2.setFont(font2);// 声明一个画图的顶级管理器HSSFPatriarch patriarch = sheet.createDrawingPatriarch();// 定义注释的大小和位置,详见文档HSSFComment comment = patriarch.createComment(new HSSFClientAnchor(0, 0, 0, 0, (short) 4, 2, (short) 6, 5));// 设置注释内容comment.setString(new HSSFRichTextString("可以在POI中添加注释！"));// 设置注释作者，当鼠标移动到单元格上是可以在状态栏中看到该内容.comment.setAuthor("leno");// 产生表格标题行HSSFRow row = sheet.createRow(0);for (short i = 0; i < headers.length; i++) {HSSFCell cell = row.createCell(i);cell.setCellStyle(style);HSSFRichTextString text = new HSSFRichTextString(headers[i]);cell.setCellValue(text);}// 遍历集合数据，产生数据行Iterator<T> it = dataset.iterator();int index = 0;while (it.hasNext()) {index++;row = sheet.createRow(index);T t = (T) it.next();// 利用反射，根据javabean属性的先后顺序，动态调用getXxx()方法得到属性值Field[] fields = t.getClass().getDeclaredFields();for (short i = 0; i < fields.length; i++) {HSSFCell cell = row.createCell(i);cell.setCellStyle(style2);Field field = fields[i];String fieldName = field.getName();String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);try {Class<? extends Object> tCls = t.getClass();Method getMethod = tCls.getMethod(getMethodName, new Class[] {});Object value = getMethod.invoke(t, new Object[] {});// 判断值的类型后进行强制类型转换String textValue = null;if (value instanceof Boolean) {boolean bValue = (Boolean) value;textValue = "男";if (!bValue) {textValue = "女";}} else if (value instanceof Date) {Date date = (Date) value;SimpleDateFormat sdf = new SimpleDateFormat(pattern);textValue = sdf.format(date);} else if (value instanceof byte[]) {// 有图片时，设置行高为60px;row.setHeightInPoints(60);// 设置图片所在列宽度为80px,注意这里单位的一个换算sheet.setColumnWidth(i, (short) (35.7 * 80));// sheet.autoSizeColumn(i);byte[] bsValue = (byte[]) value;HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 1023, 255, (short) 6, index, (short) 6,index);anchor.setAnchorType(2);patriarch.createPicture(anchor, workbook.addPicture(bsValue, HSSFWorkbook.PICTURE_TYPE_JPEG));} else {// 其它数据类型都当作字符串简单处理textValue = value.toString();}// 如果不是图片数据，就利用正则表达式判断textValue是否全部由数字组成if (textValue != null) {Pattern p = Pattern.compile("^//d+(//.//d+)?$");Matcher matcher = p.matcher(textValue);if (matcher.matches()) {// 是数字当作double处理cell.setCellValue(Double.parseDouble(textValue));} else {HSSFRichTextString richString = new HSSFRichTextString(textValue);HSSFFont font3 = workbook.createFont();font3.setColor(HSSFColor.BLUE.index);richString.applyFont(font3);cell.setCellValue(richString);}}} catch (SecurityException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (NoSuchMethodException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalArgumentException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalAccessException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (InvocationTargetException e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {// 清理资源}}}try {workbook.write(out);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}public static void main(String[] args) {// 测试学生ExportExcel<DataInfo> ex = new ExportExcel<DataInfo>();String[] headers = { "电话号码", "姓名", "套餐类型"};List<DataInfo> dataset = new ArrayList<DataInfo>();for (int i = 0; i < 2000; i++) {dataset.add(new DataInfo("15899166122", "13899166122", "17899166122"));}try {OutputStream out = new FileOutputStream("E://a.xls");ex.exportExcel(headers, dataset, out);out.close();JOptionPane.showMessageDialog(null, "导出成功!");System.out.println("excel导出成功！");} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}