导出Excel

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public class ExcelUitl<T> {/** * 导出差值报表Excel的方法 *  * @param title *            excel中的sheet名称 * @param headers *            表头 * @param result *            结果集 * @param out *            输出流 * @param pattern *            时间格式 * @throws Exception */@SuppressWarnings("deprecation")public void exportoExcel(String title, String[] headers, String[] columns, Collection<T> result, OutputStream out,String pattern) throws Exception {// 声明一个工作薄HSSFWorkbook workbook = new HSSFWorkbook();// 生成一个表格HSSFSheet sheet = workbook.createSheet(title);// 设置表格默认列宽度为20个字节sheet.setDefaultColumnWidth((short) 20);// 生成一个样式HSSFCellStyle style = workbook.createCellStyle();// 设置单元格背景色,设置单元格背景色以下两句必须同时设置style.setFillForegroundColor(HSSFColor.GREY_25_PERCENT.index); // 设置填充色style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);// 设置填充样式    // 设置单元格上、下、左、右的边框线style.setBorderBottom(HSSFCellStyle.BORDER_THIN);style.setBorderLeft(HSSFCellStyle.BORDER_THIN);style.setBorderRight(HSSFCellStyle.BORDER_THIN);style.setBorderTop(HSSFCellStyle.BORDER_THIN);// 设置居中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);// 指定当单元格内容显示不下时自动换行style.setWrapText(true);// 声明一个画图的顶级管理器HSSFPatriarch patriarch = sheet.createDrawingPatriarch();// 以下可以用于设置导出的数据的样式/*// 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 patriarch2 =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// 表头的样式HSSFCellStyle titleStyle = workbook.createCellStyle();// 创建样式对象titleStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER_SELECTION);// 水平居中titleStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中// 设置字体HSSFFont titleFont = workbook.createFont(); // 创建字体对象titleFont.setFontHeightInPoints((short) 15); // 设置字体大小titleFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 设置粗体// titleFont.setFontName("黑体"); // 设置为黑体字titleStyle.setFont(titleFont);sheet.addMergedRegion(new Region(0, (short) 0, 0, (short) (headers.length - 1)));// 指定合并区域HSSFRow rowHeader = sheet.createRow(0);HSSFCell cellHeader = rowHeader.createCell((short) 0); // 只能往第一格子写数据,然后应用样式,就可以水平垂直居中HSSFRichTextString textHeader = new HSSFRichTextString(title);cellHeader.setCellStyle(titleStyle);cellHeader.setCellValue(textHeader);HSSFRow row = sheet.createRow(1);for (int i = 0; i < headers.length; i++) {HSSFCell cell = row.createCell((short) i);cell.setCellStyle(style);HSSFRichTextString text = new HSSFRichTextString(headers[i]);cell.setCellValue(text);}// 遍历集合数据,产生数据行if (result != null) {int index = 2;for (T t : result) {// Field[] fields = t.getClass().getDeclaredFields();row = sheet.createRow(index);index++;for (short i = 0; i < columns.length; i++) {HSSFCell cell = row.createCell(i);// Field field = fields[i];// String fieldName = field.getName();String fieldName = columns[i];String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);Class tCls = t.getClass();Method getMethod = tCls.getMethod(getMethodName, new Class[] {});// getMethod.getReturnType().isInstance(obj);Object value = getMethod.invoke(t, new Class[] {});String textValue = null;if (value == null) {textValue = "";} 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();}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);}}style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中cell.setCellStyle(style);}}}workbook.write(out);out.flush();out.close();}/** * 导出Excel的方法 *  * @param title *            excel中的sheet名称 * @param headers *            表头 * @param result *            结果集 * @param out *            输出流 * @param pattern *            时间格式 * @param getDate  * @throws Exception */public void exportoExcelForDvalue(String title, String[] headers, String[] columns, Collection<T> result, OutputStream out,String pattern,String getDate) throws Exception {// 声明一个工作薄HSSFWorkbook workbook = new HSSFWorkbook();// 生成一个表格HSSFSheet sheet = workbook.createSheet(title);// 设置表格默认列宽度为20个字节sheet.setDefaultColumnWidth((short) 20);// 生成一个样式HSSFCellStyle style = workbook.createCellStyle();// 设置单元格背景色,设置单元格背景色以下两句必须同时设置style.setFillForegroundColor(HSSFColor.GREY_25_PERCENT.index); // 设置填充色style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);// 设置填充样式    // 设置单元格上、下、左、右的边框线style.setBorderBottom(HSSFCellStyle.BORDER_THIN);style.setBorderLeft(HSSFCellStyle.BORDER_THIN);style.setBorderRight(HSSFCellStyle.BORDER_THIN);style.setBorderTop(HSSFCellStyle.BORDER_THIN);// 设置居中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);// 指定当单元格内容显示不下时自动换行style.setWrapText(true);// 声明一个画图的顶级管理器HSSFPatriarch patriarch = sheet.createDrawingPatriarch();// 以下可以用于设置导出的数据的样式/*// 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 patriarch2 =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// 表头的样式HSSFCellStyle titleStyle = workbook.createCellStyle();// 创建样式对象titleStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER_SELECTION);// 水平居中titleStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中// 设置字体HSSFFont titleFont = workbook.createFont(); // 创建字体对象titleFont.setFontHeightInPoints((short) 15); // 设置字体大小titleFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 设置粗体// titleFont.setFontName("黑体"); // 设置为黑体字titleStyle.setFont(titleFont);sheet.addMergedRegion(new Region(0, (short) 0, 0, (short) (headers.length - 1)));// 指定合并区域HSSFRow rowHeader = sheet.createRow(0);HSSFCell cellHeader = rowHeader.createCell((short) 0); // 只能往第一格子写数据,然后应用样式,就可以水平垂直居中HSSFRichTextString textHeader = new HSSFRichTextString(title);cellHeader.setCellStyle(titleStyle);cellHeader.setCellValue(textHeader);sheet.addMergedRegion(new Region(1, (short) 0, 1, (short) (headers.length-1)));// 指定合并区域HSSFRow rowDate = sheet.createRow(1);HSSFCell cellDate = rowDate.createCell((short) 0); // 只能往第一格子写数据,然后应用样式,就可以水平垂直居中HSSFRichTextString textDate = new HSSFRichTextString(getDate);HSSFCellStyle dateStyle = workbook.createCellStyle();// 创建样式对象dateStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER_SELECTION);// 水平居中dateStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中cellDate.setCellStyle(dateStyle);cellDate.setCellValue(textDate);HSSFRow row = sheet.createRow(2);for (int i = 0; i < headers.length; i++) {HSSFCell cell = row.createCell((short) i);cell.setCellStyle(style);HSSFRichTextString text = new HSSFRichTextString(headers[i]);cell.setCellValue(text);}// 遍历集合数据,产生数据行if (result != null) {int index = 3;for (T t : result) {// Field[] fields = t.getClass().getDeclaredFields();row = sheet.createRow(index);index++;for (short i = 0; i < columns.length; i++) {HSSFCell cell = row.createCell(i);// Field field = fields[i];// String fieldName = field.getName();String fieldName = columns[i];String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);Class tCls = t.getClass();Method getMethod = tCls.getMethod(getMethodName, new Class[] {});// getMethod.getReturnType().isInstance(obj);Object value = getMethod.invoke(t, new Class[] {});String textValue = null;if (value == null) {textValue = "";} 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();}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);}}}}}workbook.write(out);out.flush();out.close();}@SuppressWarnings("deprecation")public void exportoExcelForDvalue2(String title, String[] headers, String[] columns, Collection<T> result, OutputStream out,String pattern, String getDate) throws Exception {// 声明一个工作薄HSSFWorkbook workbook = new HSSFWorkbook();// 生成一个表格HSSFSheet sheet = workbook.createSheet(title);// 设置表格默认列宽度为20个字节sheet.setDefaultColumnWidth((short) 20);// 生成一个样式HSSFCellStyle style = workbook.createCellStyle();// 设置单元格背景色,设置单元格背景色以下两句必须同时设置style.setFillForegroundColor(HSSFColor.GREY_25_PERCENT.index); // 设置填充色style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);// 设置填充样式    // 设置单元格上、下、左、右的边框线style.setBorderBottom(HSSFCellStyle.BORDER_THIN);style.setBorderLeft(HSSFCellStyle.BORDER_THIN);style.setBorderRight(HSSFCellStyle.BORDER_THIN);style.setBorderTop(HSSFCellStyle.BORDER_THIN);// 设置居中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);// 指定当单元格内容显示不下时自动换行style.setWrapText(true);// 声明一个画图的顶级管理器HSSFPatriarch patriarch = sheet.createDrawingPatriarch();// 以下可以用于设置导出的数据的样式/*// 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 patriarch2 =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// 表头的样式HSSFCellStyle titleStyle = workbook.createCellStyle();// 创建样式对象titleStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER_SELECTION);// 水平居中titleStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中// 设置字体HSSFFont titleFont = workbook.createFont(); // 创建字体对象titleFont.setFontHeightInPoints((short) 15); // 设置字体大小titleFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 设置粗体// titleFont.setFontName("黑体"); // 设置为黑体字titleStyle.setFont(titleFont);int num = result.size();sheet.addMergedRegion(new Region(3, (short) 1,num+2 , (short) 1));sheet.addMergedRegion(new Region(3, (short) 0, num+2, (short) 0));sheet.addMergedRegion(new Region(0, (short) 0, 0, (short) (headers.length)));// 指定合并区域HSSFRow rowHeader = sheet.createRow(0);HSSFCell cellHeader = rowHeader.createCell((short) 0); // 只能往第一格子写数据,然后应用样式,就可以水平垂直居中HSSFRichTextString textHeader = new HSSFRichTextString(title);cellHeader.setCellStyle(titleStyle);cellHeader.setCellValue(textHeader);sheet.addMergedRegion(new Region(1, (short) 0, 1, (short) (headers.length)));// 指定合并区域HSSFRow rowDate = sheet.createRow(1);HSSFCell cellDate = rowDate.createCell((short) 0); // 只能往第一格子写数据,然后应用样式,就可以水平垂直居中HSSFRichTextString textDate = new HSSFRichTextString(getDate);HSSFCellStyle dateStyle = workbook.createCellStyle();// 创建样式对象dateStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER_SELECTION);// 水平居中dateStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中cellDate.setCellStyle(dateStyle);cellDate.setCellValue(textDate);HSSFRow row = sheet.createRow(2);for (int i = 0; i < headers.length; i++) {HSSFCell cell = row.createCell((short) i);cell.setCellStyle(style);HSSFRichTextString text = new HSSFRichTextString(headers[i]);cell.setCellValue(text);}HSSFCell cellTotal = row.createCell((short) headers.length);cellTotal.setCellStyle(style);HSSFRichTextString text = new HSSFRichTextString("合计");cellTotal.setCellValue(text);double totalV = 0;// 遍历集合数据,产生数据行if (result != null) {int index = 3; int indexNo = 1; String station = null;for (T t : result) {// Field[] fields = t.getClass().getDeclaredFields();row = sheet.createRow(index);index++;for (short i = 0; i < columns.length; i++) {HSSFCell cell = row.createCell(i);// Field field = fields[i];// String fieldName = field.getName();String fieldName = columns[i];Object value = null;if(fieldName.equals("dcsName")){String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);Class tCls = t.getClass();Method getMethod = tCls.getMethod(getMethodName, new Class[] {});// getMethod.getReturnType().isInstance(obj);value = getMethod.invoke(t, new Class[] {});}else if(fieldName.equals("dvalue")){String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);Class tCls = t.getClass();Method getMethod = tCls.getMethod(getMethodName, new Class[] {});// getMethod.getReturnType().isInstance(obj);value = getMethod.invoke(t, new Class[] {});double value2 = Double.parseDouble(value.toString());totalV += value2;}else{String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);Class tCls = t.getClass();Method getMethod = tCls.getMethod(getMethodName, new Class[] {});// getMethod.getReturnType().isInstance(obj);value = getMethod.invoke(t, new Class[] {});}String textValue = null;if (value == null) {textValue = "";} 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();}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);}}}}}HSSFCellStyle nowStyle = workbook.createCellStyle();// 创建样式对象nowStyle.setAlignment(HSSFCellStyle.VERTICAL_CENTER);// 水平居左nowStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中HSSFRow nowRow = sheet.getRow((short) 3);    HSSFCell nowCell = nowRow.createCell((short) headers.length);    nowCell.setCellStyle(nowStyle);    if(totalV==0){    nowCell.setCellValue(0.0+"");    }else{    nowCell.setCellValue(new java.text.DecimalFormat("#.0").format(totalV));    }    sheet.addMergedRegion(new Region(3, (short)headers.length,num+2, (short)headers.length));HSSFRow noRow = sheet.getRow((short) 3);    HSSFCell noCell = noRow.getCell((short) 0);    noCell.setCellStyle(nowStyle);        HSSFRow staRow = sheet.getRow((short) 3);    HSSFCell staCell = staRow.getCell((short) 1);    staCell.setCellStyle(nowStyle);workbook.write(out);out.flush();out.close();}}String title = "值报表信息";String getDate ;String[] headers=null;String[] headers = new String[]{ "名字", "值"};columns = new String[]{"indexNo", "value"};List<StoDataRecord> houseList;ExcelUitl<Entity> excelUtil = new ExcelUitl<Entity>();response.setHeader("Content-Disposition", "attachment;filename=" + new String((title + ".xls").getBytes(), "iso-8859-1"));OutputStream out = response.getOutputStream();excelUtil.exportoExcelForSumDvalue2(title, headers, columns, houseList, out);



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