POI设置边框
在做一个电子表格时,边框的设置有时是必不可少的。这一节就来介绍边框,设置时,可以指定边框的位置,边框的种类,边框的顔色。
首先是边框的位置和种类。对单元格设置边框时,有上下左右位置之分,所以POI也准备了四个不同的方法。
上部的边框:
setBorderTop public void setBorderTop(short border)
set the type of border to use for the top border of the cell Parameters: border - type
下部的边框:
setBorderBottom public void setBorderBottom(short border)
set the type of border to use for the bottom border of the cell Parameters: border - type
左侧的边框:
setBorderLeft public void setBorderLeft(short border)
set the type of border to use for the left border of the cell Parameters: border - type
右侧的边框:
setBorderRight public void setBorderRight(short border)
set the type of border to use for the right border of the cell Parameters: border - type
参数通过表示边框种类的short型值来指定。下面是定义在「HSSFCellStyle」类里可以被指定值的一览表。
值说明
BORDER_DASH_DOT | dash-dot border |
BORDER_DASH_DOT_DOT | dash-dot-dot border |
BORDER_DASHED | dash border |
BORDER_DOTTED | dot borderhair-line border |
BORDER_DOUBLE | double-line border |
BORDER_HAIR | hair-line border |
BORDER_MEDIUM | Medium border |
BORDER_MEDIUM_DASH_DOT | medium dash-dot border |
BORDER_MEDIUM_DASH_DOT_DOT | medium dash-dot-dot border |
BORDER_MEDIUM_DASHED | Medium dashed border |
BORDER_NONE | No border |
BORDER_SLANTED_DASH_DOT | slanted dash-dot border |
BORDER_THICK | Thick border |
BORDER_THIN | Thin border |
比如要在单元格下边框设置两重线的边框时,按如下方法:
HSSFWorkbook workbook = new HSSFWorkbook(); HSSFCellStyle style = workbook.createCellStyle(); style.setBorderRight(HSSFCellStyle.BORDER_THIN);
下面再看看指定边框顔色。同样也分为上下左右边框来操作。
上部的边框:
setTopBorderColor public void setTopBorderColor(short color)
set the color to use for the top border Parameters: color -
下部的边框:
setBottomBorderColor public void setBottomBorderColor(short color)
set the color to use for the bottom border Parameters: color -
左侧的边框:
setLeftBorderColor public void setLeftBorderColor(short color)
set the color to use for the left border Parameters: color -
右侧的边框:
setRightBorderColor public void setRightBorderColor(short color)
set the color to use for the right border Parameters: color -
仍然是通过参数来指定顔色,而且使用方法和前面一节也是一样。具体如下:
HSSFWorkbook workbook = new HSSFWorkbook(); HSSFCellStyle style = workbook.createCellStyle(); style.setRightBorderColor(HSSFColor.RED.index); style.setBorderRight(HSSFCellStyle.BORDER_THIN);
示例程序
实际动手做做吧。首先看看如何设置上下左右的边框。
import java.io.*; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.util.HSSFColor; import org.apache.poi.hssf.usermodel.HSSFPalette; public class POISample{ public static void main(String[] args){ HSSFWorkbook workbook = new HSSFWorkbook(); HSSFSheet sheet = workbook.createSheet(); HSSFRow row = sheet.createRow(1); HSSFCell cell1 = row.createCell((short)1); HSSFCell cell2 = row.createCell((short)2); HSSFCellStyle style1 = workbook.createCellStyle(); style1.setBorderTop(HSSFCellStyle.BORDER_DOUBLE); style1.setBorderLeft(HSSFCellStyle.BORDER_DOUBLE); style1.setTopBorderColor(HSSFColor.GOLD.index); style1.setLeftBorderColor(HSSFColor.PLUM.index); cell1.setCellStyle(style1); HSSFCellStyle style2 = workbook.createCellStyle(); style2.setBorderBottom(HSSFCellStyle.BORDER_DOUBLE); style2.setBorderRight(HSSFCellStyle.BORDER_DOUBLE); style2.setBottomBorderColor(HSSFColor.ORANGE.index); style2.setRightBorderColor(HSSFColor.SKY_BLUE.index); cell2.setCellStyle(style2); cell1.setCellValue("U & L"); cell2.setCellValue("B & R"); FileOutputStream out = null; try{ out = new FileOutputStream("sample.xls"); workbook.write(out); }catch(IOException e){ System.out.println(e.toString()); }finally{ try { out.close(); }catch(IOException e){ System.out.println(e.toString()); } } } }
上面程序既改了顔色,也设置了上和左的边框各一个,右和下的边框各一个。
下面再对边框种类进行各种各样的顔色改变来看看效果。
import java.io.*; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.util.HSSFColor; public class POISample{ static HSSFWorkbook workbook; public static void main(String[] args){ workbook = new HSSFWorkbook(); HSSFSheet sheet = workbook.createSheet(); HSSFRow row[] = new HSSFRow[5]; for (int i = 0; i < 5 ; i++){ row[i] = sheet.createRow(i); } HSSFCell cell[][] = new HSSFCell[5][3]; for (int i = 0; i < 5; i++){ for (int j = 0; j < 3 ; j++){ cell[i][j] = row[i].createCell((short)j); } } setStyle(cell[0][0], "DASH_DOT", HSSFCellStyle.BORDER_DASH_DOT); setStyle(cell[0][1], "DASH_DOT_DOT", HSSFCellStyle.BORDER_DASH_DOT_DOT); setStyle(cell[0][2], "DASHED", HSSFCellStyle.BORDER_DASHED); setStyle(cell[1][0], "DOTTED", HSSFCellStyle.BORDER_DOTTED); setStyle(cell[1][1], "DOUBLE", HSSFCellStyle.BORDER_DOUBLE); setStyle(cell[1][2], "HAIR", HSSFCellStyle.BORDER_HAIR); setStyle(cell[2][0], "MEDIUM", HSSFCellStyle.BORDER_MEDIUM); setStyle(cell[2][1], "MEDIUM_DASH_DOT", HSSFCellStyle.BORDER_MEDIUM_DASH_DOT); setStyle(cell[2][2], "MEDIUM_DASH_DOT_DOT", HSSFCellStyle.BORDER_MEDIUM_DASH_DOT_DOT); setStyle(cell[3][0], "MEDIUM_DASHED", HSSFCellStyle.BORDER_MEDIUM_DASHED); setStyle(cell[3][1], "NONE", HSSFCellStyle.BORDER_NONE); setStyle(cell[3][2], "SLANTED_DASH_DOT", HSSFCellStyle.BORDER_SLANTED_DASH_DOT); setStyle(cell[4][0], "THICK", HSSFCellStyle.BORDER_THICK); setStyle(cell[4][1], "THIN", HSSFCellStyle.BORDER_THIN); FileOutputStream out = null; try{ out = new FileOutputStream("sample.xls"); workbook.write(out); }catch(IOException e){ System.out.println(e.toString()); }finally{ try { out.close(); }catch(IOException e){ System.out.println(e.toString()); } } } public static void setStyle(HSSFCell cell, String bn, short border){ HSSFCellStyle style = workbook.createCellStyle(); style.setBorderBottom(border); style.setBottomBorderColor(HSSFColor.ORANGE.index); cell.setCellStyle(style); cell.setCellValue(bn); } }