POI匯出Excel--合併單元格
阿新 • • 發佈：2019-01-30
package com.test.util; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.net.URLEncoder; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.HashSet; import java.util.Iterator; import java.util.List; import java.util.Set; import javax.servlet.http.HttpServletResponse; import javax.swing.JOptionPane; import org.apache.commons.collections.CollectionUtils; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.usermodel.HSSFDataFormat; import org.apache.poi.hssf.usermodel.HSSFFont; 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; import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.ss.util.CellReference; /** * @author zhanghk */ public class ExcelUtil_Extend { /** * @param fileName 檔名稱 * @param headers 表頭 * @param dataset 資料集 * @param isSortDataSet 是否對資料排序 * @param response HttpServletResponse * @param mergeBasis 合併基準列 可選 * @param mergeCells 要合併的列 可選 * @param sumCellsMap 要求和的列 可選 * @param timeCells 時間列 可選 * @throws IOException */ public static void exportExelMerge(String fileName,final String[] headers,List<String[]> dataset,boolean isSortDataSet,HttpServletResponse response, final Integer[] mergeBasis, final Integer[] mergeCells, final Integer[] sumCells, final Integer[] timeCells) throws IOException{ String title = "Sheet1"; response.setContentType("application/vnd.ms-excel;charset=utf-8"); response.setHeader("Content-disposition", "attachment;filename=" + URLEncoder.encode(fileName, "utf-8")); createExcelMerge(title,headers,dataset,isSortDataSet,response.getOutputStream(),mergeBasis,mergeCells,sumCells,timeCells); response.setStatus(HttpServletResponse.SC_OK); response.flushBuffer(); } /** * @param title 檔名稱 * @param headers 表頭 * @param dataset 資料集 * @param isSortDataSet 是否對資料排序 * @param out OutputStream * @param mergeBasis 合併基準列 可選 * @param mergeCells 要合併的列 * @param sumCells 要求和的列 * @param timeCells 時間列 可選 */ public static void createExcelMerge(String title, final String[] headers,List<String[]> dataset,boolean isSortDataSet, OutputStream out, final Integer[] mergeBasis, final Integer[] mergeCells, final Integer[] sumCells, final Integer[] timeCells){ HSSFWorkbook workbook = new HSSFWorkbook(); HSSFSheet sheet = workbook.createSheet(title); sheet.setDefaultColumnWidth(15); // 設定表格預設列寬度為15個位元組 HSSFCellStyle headStyle = createHeadStyle(workbook); // 生成頭部樣式 HSSFCellStyle commonDataStyle = createCommonDataStyle(workbook); // 生成一般資料樣式 HSSFCellStyle numStyle = createNumStyle(workbook); //生成數字型別保留兩位小數樣式 HSSFCellStyle sumRowStyle = createSumRowStyle(workbook); //生成合計行樣式 if(headers == null || headers.length <= 0){ return; } HSSFRow row = sheet.createRow(0); // 產生表格標題行 for (int i = 0; i < headers.length; i++) { HSSFCell cell = row.createCell(i); cell.setCellStyle(headStyle); HSSFRichTextString text = new HSSFRichTextString(headers[i]); cell.setCellValue(text); } if(isSortDataSet && mergeBasis != null && mergeBasis.length > 0){ //是否排序資料 Collections.sort(dataset, new Comparator<String[]>() { public int compare(String[] o1, String[] o2) { String s1 = ""; String s2 = ""; for(int i = 0 ; i < mergeBasis.length ; i++){ s1+=(o1[mergeBasis[i].intValue()]+Character.valueOf((char)127).toString()); s2+=(o2[mergeBasis[i].intValue()]+Character.valueOf((char)127).toString()); } if(timeCells != null && timeCells.length > 0){ for(int i = 0 ; i < timeCells.length ; i++){ s1+= o1[timeCells[i].intValue()]; s2+= o2[timeCells[i].intValue()]; } } if(s1.compareTo(s2) < 0){ return -1; }else if(s1.compareTo(s2) == 0){ return 0; }else{ return 1; } } }); } // 遍歷集合資料，產生資料行 Iterator<String[]> it = dataset.iterator(); int index = 0; while (it.hasNext()) { index++; row = sheet.createRow(index); String[] dataSources = it.next() ; for (int i = 0; i < dataSources.length; i++) { HSSFCell cell = row.createCell(i); cell.setCellStyle(commonDataStyle); cell.setCellValue(dataSources[i]); } } try { if(mergeBasis != null && mergeBasis.length > 0 && mergeCells != null && mergeCells.length > 0){ for(int i = 0 ; i < mergeCells.length ; i++){ mergedRegion(sheet,mergeCells[i],1,sheet.getLastRowNum(),workbook,mergeBasis); } } if(sumCells != null && sumCells.length > 0){ createSumRow(sheet, row, headers, sumCells, sumRowStyle, numStyle); } workbook.write(out); } catch (IOException e) { e.printStackTrace(); } finally { try { out.close(); } catch (IOException e) { e.printStackTrace(); } } } /** * 建立合計行 * @param sheet * @param row * @param headers * @param sumCells * @param sumRowStyle * @param numStyle */ private static void createSumRow(HSSFSheet sheet , HSSFRow row , final String[] headers, final Integer[] sumCells , HSSFCellStyle sumRowStyle,HSSFCellStyle numStyle){ row=sheet.createRow(sheet.getLastRowNum()+1); for (int i = 0; i < headers.length; i++) { HSSFCell cell = row.createCell(i); cell.setCellStyle(sumRowStyle); } for(int i = 1 ; i < sheet.getLastRowNum() ; i++){ for(int j = 0 ; j < sumCells.length ; j++){ sheet.getRow(i).getCell(sumCells[j]).setCellValue(Double.parseDouble(sheet.getRow(i).getCell(sumCells[j]).getStringCellValue())); sheet.getRow(i).getCell(sumCells[j]).setCellStyle(numStyle); } } HSSFCell sumCell = row.getCell(0); sumCell.setCellValue("合計："); String sumFunctionStr = null; for(int i = 0 ; i < sumCells.length ; i++){ sumFunctionStr = "SUM("+CellReference.convertNumToColString(sumCells[i])+"2:"+CellReference.convertNumToColString(sumCells[i])+sheet.getLastRowNum()+")"; row.getCell(sumCells[i]).setCellFormula(sumFunctionStr); } } /** * 合併單元格 * @param sheet * @param cellLine * @param startRow * @param endRow * @param workbook * @param mergeBasis */ private static void mergedRegion(HSSFSheet sheet, int cellLine,int startRow, int endRow, HSSFWorkbook workbook, Integer[] mergeBasis) { HSSFCellStyle style = workbook.createCellStyle(); // 樣式物件 style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); // 垂直 style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 水平 String s_will = sheet.getRow(startRow).getCell(cellLine).getStringCellValue(); // 獲取第一行的資料,以便後面進行比較 int count = 0; Set<Integer> set = new HashSet<Integer>(); CollectionUtils.addAll(set, mergeBasis); for (int i = 2; i <= endRow; i++) { String s_current = sheet.getRow(i).getCell(cellLine).getStringCellValue(); if (s_will.equals(s_current)) { boolean isMerge = true; if(!set.contains(cellLine)){//如果不是作為基準列的列 需要所有基準列都相同 for(int j = 0 ; j < mergeBasis.length ; j++){ if(!sheet.getRow(i).getCell(mergeBasis[j]).getStringCellValue() .equals(sheet.getRow(i-1).getCell(mergeBasis[j]).getStringCellValue())){ isMerge = false; } } }else{//如果作為基準列的列 只需要比較列號比本列號小的列相同 for(int j = 0 ; j < mergeBasis.length && mergeBasis[j] < cellLine ; j++){ if(!sheet.getRow(i).getCell(mergeBasis[j]).getStringCellValue() .equals(sheet.getRow(i-1).getCell(mergeBasis[j]).getStringCellValue())){ isMerge = false; } } } if(isMerge){ count++; }else{ sheet.addMergedRegion(new CellRangeAddress( startRow, startRow+count,cellLine , cellLine)); startRow = i; s_will = s_current; count = 0; } } else { sheet.addMergedRegion(new CellRangeAddress( startRow, startRow+count,cellLine , cellLine)); startRow = i; s_will = s_current; count = 0; } if (i == endRow && count > 0) { sheet.addMergedRegion(new CellRangeAddress(startRow,startRow+count ,cellLine , cellLine)); } } } /** * 標題單元格樣式 * @param workbook * @return */ private static HSSFCellStyle createHeadStyle(HSSFWorkbook workbook){ //標題單元格樣式 HSSFCellStyle headStyle = workbook.createCellStyle(); headStyle.setFillForegroundColor(HSSFColor.SKY_BLUE.index); headStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); headStyle.setBorderBottom(HSSFCellStyle.BORDER_THIN); headStyle.setBorderLeft(HSSFCellStyle.BORDER_THIN); headStyle.setBorderRight(HSSFCellStyle.BORDER_THIN); headStyle.setBorderTop(HSSFCellStyle.BORDER_THIN); headStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); //標題單元格字型 HSSFFont headFont = workbook.createFont(); headFont.setColor(HSSFColor.VIOLET.index); headFont.setFontHeightInPoints((short) 12); headFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); // 把字型應用到當前的樣式 headStyle.setFont(headFont); return headStyle; } /** * 合計行單元格樣式 * @param workbook * @return */ private static HSSFCellStyle createSumRowStyle(HSSFWorkbook workbook){ //合計行單元格樣式 HSSFCellStyle sumRowStyle = workbook.createCellStyle(); sumRowStyle.setFillForegroundColor(HSSFColor.SKY_BLUE.index); sumRowStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); sumRowStyle.setBorderBottom(HSSFCellStyle.BORDER_THIN); sumRowStyle.setBorderLeft(HSSFCellStyle.BORDER_THIN); sumRowStyle.setBorderRight(HSSFCellStyle.BORDER_THIN); sumRowStyle.setBorderTop(HSSFCellStyle.BORDER_THIN); sumRowStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); sumRowStyle.setDataFormat(HSSFDataFormat.getBuiltinFormat("#,##0.00")); //合計行單元格字型 HSSFFont sumRowFont = workbook.createFont(); sumRowFont.setColor(HSSFColor.VIOLET.index); sumRowFont.setFontHeightInPoints((short) 12); sumRowFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); // 把字型應用到當前的樣式 sumRowStyle.setFont(sumRowFont); return sumRowStyle; } /** * 普通資料單元格樣式 * @param workbook * @return */ private static HSSFCellStyle createCommonDataStyle(HSSFWorkbook workbook){ //普通資料單元格樣式 HSSFCellStyle commonDataStyle = workbook.createCellStyle(); commonDataStyle.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index); commonDataStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); commonDataStyle.setBorderBottom(HSSFCellStyle.BORDER_THIN); commonDataStyle.setBorderLeft(HSSFCellStyle.BORDER_THIN); commonDataStyle.setBorderRight(HSSFCellStyle.BORDER_THIN); commonDataStyle.setBorderTop(HSSFCellStyle.BORDER_THIN); commonDataStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); commonDataStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); //普通資料單元格字型 HSSFFont commonDataFont = workbook.createFont(); commonDataFont.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL); //把字型應用到當前的樣式 commonDataStyle.setFont(commonDataFont); return commonDataStyle; } /** * 自定義保留兩位小數數字單元格格式 * @param workbook * @return */ private static HSSFCellStyle createNumStyle(HSSFWorkbook workbook){ //自定義保留兩位小數數字單元格格式 HSSFCellStyle numStyle = workbook.createCellStyle(); numStyle.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index); numStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); numStyle.setBorderBottom(HSSFCellStyle.BORDER_THIN); numStyle.setBorderLeft(HSSFCellStyle.BORDER_THIN); numStyle.setBorderRight(HSSFCellStyle.BORDER_THIN); numStyle.setBorderTop(HSSFCellStyle.BORDER_THIN); numStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); numStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); numStyle.setDataFormat(HSSFDataFormat.getBuiltinFormat("#,##0.00")); //自定義保留兩位小數數字單元格字型 HSSFFont numFont = workbook.createFont(); numFont.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL); //把字型應用到當前的樣式 numStyle.setFont(numFont); return numStyle; } public static void main(String[] args) { String[] headers = { "大區", "部門", "金額", "數量", "日期" }; List<String[]> dataset = new ArrayList<String[]>(); dataset.add(new String[] {"華東", "部門3", "35", "1", "2015-01-01"}); dataset.add(new String[] {"華北", "部門1", "20", "1", "2015-01-02"}); dataset.add(new String[] {"華北", "部門2", "25", "1", "2015-01-03"}); dataset.add(new String[] {"華北", "部門5", "25", "1", "2015-01-04"}); dataset.add(new String[] {"華南", "部門1", "15", "1", "2015-01-05"}); dataset.add(new String[] {"華北", "部門3", "30", "1", "2015-01-06"}); dataset.add(new String[] {"華北", "部門3", "30", "1", "2015-01-07"}); dataset.add(new String[] {"華東", "部門1", "25", "1", "2015-01-08"}); dataset.add(new String[] {"華南", "部門4", "30", "1", "2015-01-09"}); dataset.add(new String[] {"華東", "部門2", "25", "1", "2015-01-10"}); dataset.add(new String[] {"華東", "部門2", "25", "1", "2015-01-11"}); dataset.add(new String[] {"華東", "部門3", "35", "1", "2015-01-12"}); dataset.add(new String[] {"華南", "部門1", "15", "1", "2015-01-13"}); dataset.add(new String[] {"華北", "部門6", "20", "1", "2015-01-14"}); dataset.add(new String[] {"華南", "部門2", "25", "1", "2015-01-15"}); dataset.add(new String[] {"華南", "部門2", "25", "1", "2015-01-16"}); dataset.add(new String[] {"華東", "部門1", "25", "1", "2015-01-17"}); dataset.add(new String[] {"華南", "部門8", "30", "1", "2015-01-18"}); dataset.add(new String[] {"華東", "部門2", "35", "1", "2015-01-01"}); dataset.add(new String[] {"華北", "部門1", "20", "1", "2015-01-02"}); dataset.add(new String[] {"華北", "部門11", "25", "1", "2015-01-03"}); dataset.add(new String[] {"華北", "部門2", "25", "1", "2015-01-04"}); dataset.add(new String[] {"華南", "部門1", "15", "1", "2015-01-05"}); dataset.add(new String[] {"華北", "部門4", "30", "1", "2015-01-06"}); dataset.add(new String[] {"華北", "部門3", "30", "1", "2015-01-07"}); dataset.add(new String[] {"華東", "部門9", "25", "1", "2015-01-08"}); dataset.add(new String[] {"華南", "部門3", "30", "1", "2015-01-09"}); dataset.add(new String[] {"華東", "部門12", "25", "1", "2015-01-10"}); dataset.add(new String[] {"華東", "部門2", "25", "1", "2015-01-11"}); dataset.add(new String[] {"華東", "部門12", "35", "1", "2015-01-12"}); dataset.add(new String[] {"華南", "部門1", "15", "1", "2015-01-13"}); dataset.add(new String[] {"華北", "部門11", "20", "1", "2015-01-14"}); dataset.add(new String[] {"華南", "部門21", "25", "1", "2015-01-15"}); dataset.add(new String[] {"華南", "部門2", "25", "1", "2015-01-16"}); dataset.add(new String[] {"華東", "部門15", "25", "1", "2015-01-17"}); dataset.add(new String[] {"華南", "部門3", "30", "1", "2015-01-18"}); dataset.add(new String[] {"華東", "部門3", "35", "1", "2015-01-01"}); dataset.add(new String[] {"華北", "部門17", "20", "1", "2015-01-02"}); dataset.add(new String[] {"華北", "部門22", "25", "1", "2015-01-03"}); dataset.add(new String[] {"華北", "部門2", "25", "1", "2015-01-04"}); dataset.add(new String[] {"華南", "部門1", "15", "1", "2015-01-05"}); dataset.add(new String[] {"華北", "部門2", "30", "1", "2015-01-06"}); dataset.add(new String[] {"華北", "部門3", "30", "1", "2015-01-07"}); dataset.add(new String[] {"華東", "部門1", "25", "1", "2015-01-08"}); dataset.add(new String[] {"華南", "部門8", "30", "1", "2015-01-09"}); dataset.add(new String[] {"華東", "部門2", "25", "1", "2015-01-10"}); dataset.add(new String[] {"華東", "部門2", "25", "1", "2015-01-11"}); dataset.add(new String[] {"華東", "部門3", "35", "1", "2015-01-12"}); dataset.add(new String[] {"華南", "部門7", "15", "1", "2015-01-13"}); dataset.add(new String[] {"華北", "部門1", "20", "1", "2015-01-14"}); dataset.add(new String[] {"華南", "部門2", "25", "1", "2015-01-15"}); dataset.add(new String[] {"華南", "部門2", "25", "1", "2015-01-16"}); dataset.add(new String[] {"華東", "部門9", "25", "1", "2015-01-17"}); dataset.add(new String[] {"華南", "部門3", "30", "1", "2015-01-18"}); try { OutputStream out = new FileOutputStream("E://a.xls"); ExcelUtil_Extend.createExcelMerge("測試.xls", headers, dataset, true, out, new Integer[]{0,1}, new Integer[]{0,1}, new Integer[]{2,3}, new Integer[]{4}); out.close(); JOptionPane.showMessageDialog(null, "匯出成功!"); System.out.println("excel匯出成功！"); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }