讀取和重寫 Workbooks
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POIFSFileSystem fs =
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3 new POIFSFileSystem(new FileInputStream("workbook.xls"));
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5 HSSFWorkbook wb = new HSSFWorkbook(fs);
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7 HSSFSheet sheet = wb.getSheetAt(0);
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9 HSSFRow row = sheet.getRow(2);
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11 HSSFCell cell = row.getCell((short)3);
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13 if (cell == null)
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15 cell = row.createCell((short)3);
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17 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
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19 cell.setCellValue("a test");
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21 // 寫入文件
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23 FileOutputStream fileOut = new FileOutputStream("workbook.xls");
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25 wb.write(fileOut);
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27 fileOut.close();
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29
在單元格中換行
1HSSFWorkbook wb = new HSSFWorkbook();
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3 HSSFSheet s = wb.createSheet();
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5 HSSFRow r = null;
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7 HSSFCell c = null;
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9 HSSFCellStyle cs = wb.createCellStyle();
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11 HSSFFont f = wb.createFont();
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13 HSSFFont f2 = wb.createFont();
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15 cs = wb.createCellStyle();
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17 cs.setFont( f2 );
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19 //開啟Word Wrap
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21 cs.setWrapText( true );
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23 r = s.createRow( (short) 2 );
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25 r.setHeight( (short) 0x349 );
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27 c = r.createCell( (short) 2 );
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29 c.setCellType( HSSFCell.CELL_TYPE_STRING );
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31 c.setCellValue( "Use "n with word wrap on to create a new line" );
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33 c.setCellStyle( cs );
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35 s.setColumnWidth( (short) 2, (short) ( ( 50 * 8 ) / ( (double) 1 / 20 ) ) );
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37 FileOutputStream fileOut = new FileOutputStream( "workbook.xls" );
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39 wb.write( fileOut );
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41 fileOut.close();
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43
數據格式化
1 HSSFWorkbook wb = new HSSFWorkbook();
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3 HSSFSheet sheet = wb.createSheet("format sheet");
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5 HSSFCellStyle style;
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7 HSSFDataFormat format = wb.createDataFormat();
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9 HSSFRow row;
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11 HSSFCell cell;
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13 short rowNum = 0;
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15 short colNum = 0;
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17 row = sheet.createRow(rowNum++);
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19 cell = row.createCell(colNum);
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21 cell.setCellValue(11111.25);
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23 style = wb.createCellStyle();
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25 style.setDataFormat(format.getFormat("0.0"));
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27 cell.setCellStyle(style);
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29 row = sheet.createRow(rowNum++);
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31 cell = row.createCell(colNum);
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33 cell.setCellValue(11111.25);
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35 style = wb.createCellStyle();
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37 style.setDataFormat(format.getFormat("#,##0.0000"));
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39 cell.setCellStyle(style);
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41 FileOutputStream fileOut = new FileOutputStream("workbook.xls");
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43 wb.write(fileOut);
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45 fileOut.close();
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47
使得一個Sheet適合一頁
1HSSFWorkbook wb = new HSSFWorkbook();
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3 HSSFSheet sheet = wb.createSheet("format sheet");
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5 HSSFPrintSetup ps = sheet.getPrintSetup();
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7 sheet.setAutobreaks(true);
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9 ps.setFitHeight((short)1);
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11ps.setFitWidth((short)1);
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13 FileOutputStream fileOut = new FileOutputStream("workbook.xls");
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15 wb.write(fileOut);
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17 fileOut.close();
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19
設置打印區域
1HSSFWorkbook wb = new HSSFWorkbook();
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3 HSSFSheet sheet = wb.createSheet("Sheet1");
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5 wb.setPrintArea(0, "$A$1:$C$2");
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7 //為第一個Sheet頁設置打印區域
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9 //也可以這樣
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11 //wb.setPrintArea(0, 0, 1, 0, 0) ，詳細參考java doc
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13 FileOutputStream fileOut = new FileOutputStream("workbook.xls");
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15 wb.write(fileOut);
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17 fileOut.close();
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設置頁腳的頁數
1 HSSFWorkbook wb = new HSSFWorkbook();
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3 HSSFSheet sheet = wb.createSheet("format sheet");
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5 HSSFFooter footer = sheet.getFooter()
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7 footer.setRight( "Page " + HSSFFooter.page() + " of " + HSSFFooter.numPages() );
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9 FileOutputStream fileOut = new FileOutputStream("workbook.xls");
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11 wb.write(fileOut);
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13 fileOut.close();
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15
使用簡便的函數
這些函數保存在contrib并且提供了一些使用特征功能，例如設置合并單元格的邊框，不用創建新樣式改變樣式屬性。
1HSSFWorkbook wb = new HSSFWorkbook();
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3 HSSFSheet sheet1 = wb.createSheet( "new sheet" );
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5 // 合并單元格
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7 HSSFRow row = sheet1.createRow( (short) 1 );
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9 HSSFRow row2 = sheet1.createRow( (short) 2 );
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11 HSSFCell cell = row.createCell( (short) 1 );
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13 cell.setCellValue( "This is a test of merging" );
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15 Region region = new Region( 1, (short) 1, 4, (short) 4 );
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17 sheet1.addMergedRegion( region );
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19 // 設置邊框和顏色.
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21 final short borderMediumDashed = HSSFCellStyle.BORDER_MEDIUM_DASHED;
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23 HSSFRegionUtil.setBorderBottom( borderMediumDashed,
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25 region, sheet1, wb );
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27 HSSFRegionUtil.setBorderTop( borderMediumDashed,
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29 region, sheet1, wb );
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31 HSSFRegionUtil.setBorderLeft( borderMediumDashed,
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33 region, sheet1, wb );
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35 HSSFRegionUtil.setBorderRight( borderMediumDashed,
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37 region, sheet1, wb );
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39 HSSFRegionUtil.setBottomBorderColor(HSSFColor.AQUA.index, region, sheet1, wb);
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41 HSSFRegionUtil.setTopBorderColor(HSSFColor.AQUA.index, region, sheet1, wb);
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43 HSSFRegionUtil.setLeftBorderColor(HSSFColor.AQUA.index, region, sheet1, wb);
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45 HSSFRegionUtil.setRightBorderColor(HSSFColor.AQUA.index, region, sheet1, wb);
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47 // 展示HSSFCellUtil類的用法
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49 HSSFCellStyle style = wb.createCellStyle();
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51 style.setIndention((short)4);
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53 HSSFCellUtil.createCell(row, 8, "This is the value of the cell", style);
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55 HSSFCell cell2 = HSSFCellUtil.createCell( row2, 8, "This is the value of the cell");
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57 HSSFCellUtil.setAlignment(cell2, wb, HSSFCellStyle.ALIGN_CENTER);
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59 // 寫入文件
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61 FileOutputStream fileOut = new FileOutputStream( "workbook.xls" );
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63 wb.write( fileOut );
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65 fileOut.close();
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在Sheet頁中上下移動行
1 HSSFWorkbook wb = new HSSFWorkbook();
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3 HSSFSheet sheet = wb.createSheet("row sheet");
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5 //創建不同的行列
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7 // 將6-11行移動到0-5行
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9 sheet.shiftRows(5, 10, -5);
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11 FileOutputStream fileOut = new FileOutputStream("workbook.xls");
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13 wb.write(fileOut);
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15 fileOut.close();
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設置一個Sheet頁為被選中的
1HSSFWorkbook wb = new HSSFWorkbook();
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3 HSSFSheet sheet = wb.createSheet("row sheet");
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5 sheet.setSelected(true);
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7 // 創建不同的行列。。。
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9 FileOutputStream fileOut = new FileOutputStream("workbook.xls");
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11 wb.write(fileOut);
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13 fileOut.close();
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15
設置放大屬性
1The zoom is expressed as a fraction. For example to express a zoom of 75% use 3 for the numerator and 4 for the denominator.
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3Zoom被明確為一個分數，例如下面的75%使用3作為分子，4作為分母。
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5 HSSFWorkbook wb = new HSSFWorkbook();
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7 HSSFSheet sheet1 = wb.createSheet("new sheet");
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9 sheet1.setZoom(3,4); // 75%放大
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11 FileOutputStream fileOut = new FileOutputStream("workbook.xls");
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13 wb.write(fileOut);
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15 fileOut.close();
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拆分和凍結窗口
這里有你創建的兩種窗口：凍結窗口和拆分窗口。
一個凍結窗口是被行和列拆分開的，可以按照如下設置創建凍結窗口。
1sheet1.createFreezePane( 3, 2, 3, 2 );
前兩個參數是你要用來拆分的列數和行數。后兩個參數是下面窗口的可見象限，其中第三個參數是右邊區域可見的左邊列數，第四個參數是下面區域可見的首行。
拆分可以將區域分成四個工作區。拆分發生在像素級別而且用戶可以通過拖拽到新的位置來判斷。
用如下方式拆分窗口:
1sheet2.createSplitPane( 2000, 2000, 0, 0, HSSFSheet.PANE_LOWER_LEFT );
The first parameter is the x position of the split. This is in 1/20th of a point. A point in this case seems to equate to a pixel. The second parameter is the y position of the split. Again in 1/20th of a point.
第一個參數是拆分的x位置。這里單位是一個點的1/20，在這種比例下點看起來是一個像素。第二個參數是拆分的y位置，也是一個點的1/20。第三、四個參數同上。最后一個參數說明當前哪個窗口有焦點，四個選擇HSSFSheet.PANE_LOWER_LEFT, PANE_LOWER_RIGHT, PANE_UPPER_RIGHT or PANE_UPPER_LEFT。
反復的行和列（設置打印標題）
在打印輸出的時候需要使用HSSFWorkbook類的setRepeatingRowsAndColumns()方法反復的設置行和列。
這個方法包含5個參數，第一個參數是Sheet頁的索引（從0開始算），第二、三個參數是重寫的列的范圍。不使用重寫功能的話可以設置-1代替。第四、五個參數是重寫的行的范圍。不使用重寫功能的話可以設置-1代替。
1HSSFWorkbook wb = new HSSFWorkbook();
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3 HSSFSheet sheet1 = wb.createSheet("new sheet");
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5 HSSFSheet sheet2 = wb.createSheet("second sheet");
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7 // 第一個Sheet設置從0到2的列
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9 wb.setRepeatingRowsAndColumns(0,0,2,-1,-1);
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11 // 第二個Sheet設置行和列
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13 wb.setRepeatingRowsAndColumns(1,4,5,1,2);
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15 FileOutputStream fileOut = new FileOutputStream("workbook.xls");
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17 wb.write(fileOut);
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19 fileOut.close();
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21
頁眉和頁腳
這是個頁眉的例子，但是頁腳也同樣適用.
1 HSSFWorkbook wb = new HSSFWorkbook();
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3 HSSFSheet sheet = wb.createSheet("new sheet");
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5 HSSFHeader header = sheet.getHeader();
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7 header.setCenter("Center Header");
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9 header.setLeft("Left Header");
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11 header.setRight(HSSFHeader.font("Stencil-Normal", "Italic") +
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13 HSSFHeader.fontSize((short) 16) + "Right w/ Stencil-Normal Italic font and size 16");
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15 FileOutputStream fileOut = new FileOutputStream("workbook.xls");
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17 wb.write(fileOut);
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19 fileOut.close();
posted on 2008-11-25 12:01
Vincent-chen 閱讀(1186)
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