下载EXCEL文件Utils
import jxl.*; import jxl.biff.DisplayFormat; import jxl.format.Alignment; import jxl.format.BoldStyle; import jxl.format.Border; import jxl.format.BorderLineStyle; import jxl.format.*; import jxl.format.VerticalAlignment; import jxl.write.*; import jxl.write.biff.RowsExceededException; import org.apache.commons.lang3.StringUtils; import org.apache.log4j.LogManager; import org.apache.log4j.Logger; import javax.servlet.http.HttpServletResponse; import java.io.File; import java.io.IOException; import java.io.OutputStream; import java.util.ArrayList; import java.util.List; import java.util.regex.Pattern; import java.lang.Boolean; /** * 下载EXCEL文件 * */ @SuppressWarnings("deprecation") public class DownloadExcelUtil { private static final Logger log = LogManager.getLogger(DownloadExcelUtil.class); private Integer icol = 0; // 记录列 private Integer irow = -1; // 记录行 private OutputStream os; // 获得输出流 private WritableWorkbook wbook; // 创建excel文件 private WritableSheet wsheet; // 工作表 private WritableCellFormat wcfFC; // 单元格样式 private WritableFont wfont; // 字体样式 private Integer trow = -1; private Integer titleCols = 0; private long startTime; private int sheetIndex = 0; private String sheetName; /** * 设置文件名和工作表名(Excel) * * @param response * 为NULL时，写入磁盘 * @param fileName * 文件名 * @param sheetName * 工作表名 * @throws IOException */ public DownloadExcelUtil(HttpServletResponse response, String fileName, String sheetName) throws IOException { startTime = System.currentTimeMillis(); if (fileName.indexOf(".xls") < 0) { fileName += ".xls"; } if (response != null && response instanceof HttpServletResponse) { log.warn("Write Excel To Memory.Please wait..."); response.reset(); response.setContentType("application/vnd.ms-excel;charset=UTF-8"); response.setHeader("Content-Disposition", "attachment;filename=" + new String(fileName.getBytes("GB2312"), "ISO8859-1")); os = response.getOutputStream();// 获得输出流 os.flush(); wbook = Workbook.createWorkbook(os); // 创建excel文件 } else { log.warn("Write Excel To Disk.Please wait..."); wbook = Workbook.createWorkbook(new File(fileName)); // 创建excel文件 } this.sheetName = sheetName; wsheet = wbook.createSheet(sheetName, sheetIndex++); // sheet名称 } public void addSheet(String sheetName) { irow = -1; this.sheetName = sheetName; wsheet = wbook.createSheet(sheetName, sheetIndex++); } /** * 设置报表标题 * * @param reportTitle * 报表标题 * @throws IOException * @throws WriteException * @throws WriteException */ public void setReportTitle(String reportTitle) throws WriteException, IOException { try { irow++; wfont = new WritableFont(WritableFont.createFont("宋体"), 12, WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE, jxl.format.Colour.BLACK); wcfFC = new WritableCellFormat(wfont); wcfFC.setAlignment(Alignment.CENTRE);// 对齐方式 // wcfFC.setBackground(jxl.format.Colour.VERY_LIGHT_YELLOW);// 背景色 wcfFC.setVerticalAlignment(VerticalAlignment.CENTRE);// 对齐方式 // wcfFC.setBorder(Border.ALL, BorderLineStyle.MEDIUM, // Colour.BLACK);// // 边框 wsheet.addCell(new Label(icol, irow, reportTitle, wcfFC)); trow = irow; } catch (Exception e) { this.close(); } } /** * 设置报表内容头 * * @param listTitle * 报表头 * @throws IOException * @throws WriteException */ @Deprecated public void setExcelListTitle(String[] listTitle) throws WriteException, IOException { try { irow++; long start = System.currentTimeMillis(); wfont = new WritableFont(WritableFont.createFont("宋体"), 10, WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE, jxl.format.Colour.BLACK); wcfFC = new WritableCellFormat(wfont); wcfFC.setBorder(Border.ALL, BorderLineStyle.MEDIUM); wcfFC.setAlignment(Alignment.CENTRE);// 对齐方式 wcfFC.setVerticalAlignment(VerticalAlignment.CENTRE);// 对齐方式 for (int i = icol; i < listTitle.length; i++) { wsheet.addCell(new Label(i, irow, listTitle[i], wcfFC)); } trow = irow; log.info("title use time:" + (System.currentTimeMillis() - start)); } catch (Exception e) { this.close(); } } /** * 添加一行 * * @param strings * 该行数据 * @throws IOException * @throws WriteException */ public void addRow(Object[] strings, BorderLineStyle borderLineStyle, Alignment alignment, String bold) throws WriteException, IOException { try { irow++; bold = StringUtils.isEmpty(bold) ? "" : bold; for (int i = 0; i < strings.length; i++) { if ("bold".equals(bold.toLowerCase())) wfont = new WritableFont(WritableFont.createFont("宋体"), 10, WritableFont.BOLD, false); else wfont = new WritableFont(WritableFont.createFont("宋体"), 10, WritableFont.NO_BOLD, false); wcfFC = new WritableCellFormat(wfont); wcfFC.setAlignment(alignment);// 对齐方式 wcfFC.setVerticalAlignment(VerticalAlignment.CENTRE);// 对齐方式 if (borderLineStyle == BorderLineStyle.THIN && i == strings.length - 1) { wcfFC.setBorder(Border.ALL, borderLineStyle); wcfFC.setBorder(Border.RIGHT, BorderLineStyle.MEDIUM); } else wcfFC.setBorder(Border.ALL, borderLineStyle); wsheet.addCell(new Label(i, irow, strings[i] == null ? "" : strings[i].toString(), wcfFC)); } } catch (Exception e) { log.error(e); this.close(); } } /** * 添加一行 * * @param strings * 该行数据 * @throws IOException * @throws WriteException */ public void addRow(Object[] strings, CellType[] cellTypes, DisplayFormat... dFormat) throws WriteException, IOException { try { irow++; DisplayFormat format = null; for (int i = 0; i < strings.length; i++) { if (dFormat != null) { if (dFormat.length > i) { format = dFormat[i]; } else if (dFormat.length > 0) { format = dFormat[0]; } } addCell(i, irow, strings[i] == null ? "" : strings[i].toString(), cellTypes[i], format, false, i + 1 == strings.length); } } catch (Exception e) { log.error(e); this.close(); } } /** * 添加多行 * * @param infoList * 报表内容 * @param cellTypes * 单元格样式 * @throws IOException * @throws WriteException * @throws Exception */ public void addRows(List<?> infoList, CellType[] cellTypes, DisplayFormat... dFormat) throws WriteException, IOException { if (infoList != null && !infoList.isEmpty()) { // 内容 CellType cellType = CellType.EMPTY; DisplayFormat format = null; for (; 0 < infoList.size();) { if (irow == 50000) { this.write(); this.addSheet(sheetName); } irow++; Object[] rowInfo = (Object[]) infoList.get(0); if (rowInfo.length > titleCols) { titleCols = rowInfo.length; } for (int j = icol; j < rowInfo.length; j++) { rowInfo[j] = rowInfo[j] == null ? "" : rowInfo[j]; if (cellTypes != null && j < cellTypes.length) { cellType = cellTypes[j] == null ? CellType.EMPTY : cellTypes[j]; } else { cellType = CellType.EMPTY; } if (dFormat != null) { if (dFormat.length > j) { format = dFormat[j]; } else if (dFormat.length > 0) { format = dFormat[0]; } } this.addCell(j, irow, rowInfo[j], cellType, format, 1 == infoList.size(), j == rowInfo.length - 1);// 添加单元格并判断是否为最后一列最后一行 } infoList.remove(0); } try { if (os != null) os.flush(); if (trow >= 0) wsheet.mergeCells(icol, trow, titleCols + icol - 1, trow);// 设置报表标题 } catch (Exception e) { log.error(e); this.close(); } } } /** * 下载Excel * * @throws IOException * @throws WriteException * @throws Exception */ public void reportExcel() throws WriteException, IOException { log.info("Use time:" + MathUtil.divide(System.currentTimeMillis() - startTime, 1000) + "s"); this.flush(); log.info("ReportExcel Successful!!!"); } /** * 合并单元格 * * @param col * 起始列 * @param row * 起始行 * @param toCol * 结束列 * @param toRow * 结束行 * @throws IOException * @throws WriteException * @throws Exception */ public void setMergeCells(int col, int row, int toCol, int toRow) throws WriteException, IOException { try { wsheet.mergeCells(col, row, toCol, toRow); } catch (Exception e) { this.close(); } } /** * 关闭资源 * * @throws WriteException * @throws IOException */ public void close() throws WriteException, IOException { if (wbook != null) { wbook.write(); wbook.close(); } if (os != null) { os.flush(); os.close(); } } /** * 关闭资源 * * @throws WriteException * @throws IOException */ public void write() throws WriteException, IOException { this.setRowView(); this.setColumnView(); if (os != null) { os.flush(); } } /** * 释放资源 * * @throws WriteException * @throws IOException */ private void flush() throws WriteException, IOException { this.setRowView(); this.setColumnView(); this.close(); } /** * 释放资源 * * @throws IOException * @throws WriteException */ public void osFlush() throws IOException, WriteException { if (os != null) { os.flush(); } } /** * 添加单元格 * * @return * @throws IOException * @throws WriteException */ public void addCell(Integer col, Integer row, Object o, CellType type, DisplayFormat format, Boolean isLastRow, Boolean isLastCols) throws WriteException, IOException { WritableFont wfont = new WritableFont(WritableFont.createFont("宋体"), 10, WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE, jxl.format.Colour.BLACK); try { if (o instanceof ArrayList<?>) { Label Label = new Label(col, row, "", wcfFC); WritableCellFeatures wcf = new WritableCellFeatures(); if (!((List<?>) o).isEmpty()) wcf.setDataValidationList((List<?>) o); Label.setCellFeatures(wcf); wsheet.addCell(Label); } else { // 字体样式 if (type == CellType.LABEL) { wfont = new WritableFont(WritableFont.createFont("宋体"), 10, WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE, jxl.format.Colour.BLACK); wcfFC = new WritableCellFormat(wfont); wcfFC.setAlignment(Alignment.CENTRE);// 对齐方式 } else if (type == CellType.STRING_FORMULA) { wcfFC = new WritableCellFormat(wfont); wcfFC.setAlignment(Alignment.LEFT);// 对齐方式 } else if (type == CellType.NUMBER) {// 数字 wcfFC = new WritableCellFormat(wfont, format); wcfFC.setAlignment(Alignment.RIGHT);// 对齐方式 } else if (type == CellType.DATE || type == CellType.DATE_FORMULA) {// 日期 wcfFC = new WritableCellFormat(wfont, format); wcfFC.setAlignment(Alignment.CENTRE);// 对齐方式 } else { wcfFC = new WritableCellFormat(wfont); wcfFC.setAlignment(Alignment.CENTRE);// 对齐方式 } wcfFC.setVerticalAlignment(VerticalAlignment.CENTRE);// 对齐方式 wcfFC.setBorder(Border.ALL, BorderLineStyle.THIN);// 边框 if (isLastCols) { wcfFC.setBorder(Border.RIGHT, BorderLineStyle.MEDIUM); } if (isLastRow) { wcfFC.setBorder(Border.BOTTOM, BorderLineStyle.MEDIUM); } if (o == null) { wsheet.addCell(new Label(col, row, "")); } else if (StringUtils.isEmpty(String.valueOf(o))) { wsheet.addCell(new Label(col, row, o.toString(), wcfFC)); } else if (type == CellType.NUMBER) { wsheet.addCell(new jxl.write.Number(col, row, Double.valueOf(String.valueOf(o)), wcfFC)); } else if (type == CellType.DATE || type == CellType.DATE_FORMULA) { wsheet.addCell(new jxl.write.DateTime(col, row, DateUtil.stringToDate(o .toString()), wcfFC)); } else { wsheet.addCell(new Label(col, row, o.toString(), wcfFC)); } } } catch (Exception e) { e.printStackTrace(); this.close(); } } /** * 设置行高 * * @throws IOException * @throws WriteException * @throws RowsExceededException */ private void setRowView() throws WriteException, IOException { try { for (int i = 0; i < wsheet.getRows(); i++) { wsheet.setRowView(i, (int) (wsheet.getRowView(i).getDimension() * 1.3)); } } catch (Exception e) { this.close(); } } /** * 设置列宽 * * @param cellInfo * @param col */ private void setColumnView() { int infoWidth, cellWidth; String value; Pattern pattern = Pattern.compile("\\d+(.\\d+)?$"); Cell cell; for (int i = 0; i < wsheet.getRows(); i++) { lablea: for (int j = 0; j < wsheet.getColumns(); j++) { // 过滤合并单元格 Range[] range = wsheet.getMergedCells(); for (int k = 0; k < range.length; k++) { if (range[k].getTopLeft().getRow() == i && range[k].getTopLeft().getColumn() == j && range[k].getBottomRight().getColumn() != j) continue lablea; } cell = wsheet.getCell(j, i); value = cell.getContents(); if (cell.getType() == CellType.DATE) {// 日期 infoWidth = (int) Math.round(value.length() * 0.5); } else if (cell.getType() == CellType.NUMBER) {// 数字 int p = 0; for (int k = 0; k < value.split("\\.")[0].length(); k++) { if (value.charAt(k) == '0') { p++; } } infoWidth = (int) Math.round(value.length() * 2 + p * 0.2); } else if (pattern.matcher(value).matches()) {// 数字 infoWidth = (int) Math.round(value.length() * 1.2); } else if (cell.getCellFormat() != null && cell.getCellFormat().getFont().getBoldWeight() == BoldStyle.BOLD .getValue()) {// 粗体 infoWidth = (int) Math.round(value.getBytes().length * 1.13); } else if (value.getBytes().length != value.length()) { infoWidth = (int) Math.round(value.length() * 1.9); } else { infoWidth = (int) Math.round(value.length() * 1.05); } cellWidth = wsheet.getColumnView(j).getDimension(); if (cellWidth < infoWidth) { wsheet.setColumnView(j, infoWidth); } } } } /** 隐藏列 */ public void setHideCol(int rols) { CellView view = new CellView(); view.setHidden(true); wsheet.setColumnView(rols, view); } /** 隐藏行 */ public void setHideRow(int row) throws RowsExceededException { CellView view = new CellView(); view.setHidden(true); wsheet.setRowView(row, view); } /** 删除列 */ public void deleteCol(int rols) { wsheet.removeColumn(rols); } /** 删除行 */ public void deleteRow(int row) { wsheet.removeRow(row); } public void setIrow(Integer row) { this.irow = row; } public int getIrow() { return this.irow; } public void setIcol(Integer col) { icol = col; } public Integer getIcol() { return icol; } public Integer getTitleCols() { return titleCols; } public int getSheetIndex() { return sheetIndex; } }