POI单元格顔色设定
先从单元格顔色设定开始介绍。单元格的顔色有前景色和背景色。
前景色的设定使用「HSSFCellStyle」类的「setFillForegroundColor」方法。
setFillForegroundColor public void setFillForegroundColor(short bg)
set the foreground fill color Parameters: bg - color
背景色的设定则使用「HSSFCellStyle」类的「setFillBackgroundColor」方法。
setFillBackgroundColor public void setFillBackgroundColor(short bg)
set the background fill color. Parameters: bg - color
两个方法都是通过参数来设定具体什么顔色。该参数类型为short型，在「HSSFColor」类里，准备了各种各样顔色的定义值。
HSSFColor类
HSSFColor类定义如下：
- java.lang.Object
- org.apache.poi.hssf.util.HSSFColor
- public class HSSFColor extends java.lang.Object
而各种顔色又是作为HSSFColor类的子类，定义一览表如下：
| HSSFColor.AQUA | HSSFColor.BLACK |
| HSSFColor.BLUE | HSSFColor.BLUE_GREY |
| HSSFColor.BRIGHT_GREEN | HSSFColor.BROWN |
| HSSFColor.CORAL | HSSFColor.CORNFLOWER_BLUE |
| HSSFColor.DARK_BLUE | HSSFColor.DARK_GREEN |
| HSSFColor.DARK_RED | HSSFColor.DARK_TEAL |
| HSSFColor.DARK_YELLOW | HSSFColor.GOLD |
| HSSFColor.GREEN | HSSFColor.GREY_25_PERCENT |
| HSSFColor.GREY_40_PERCENT | HSSFColor.GREY_50_PERCENT |
| HSSFColor.GREY_80_PERCENT | HSSFColor.INDIGO |
| HSSFColor.LAVENDER | HSSFColor.LEMON_CHIFFON |
| HSSFColor.LIGHT_BLUE | HSSFColor.LIGHT_CORNFLOWER_BLUE |
| HSSFColor.LIGHT_GREEN | HSSFColor.LIGHT_ORANGE |
| HSSFColor.LIGHT_TURQUOISE | HSSFColor.LIGHT_YELLOW |
| HSSFColor.LIME | HSSFColor.MAROON |
| HSSFColor.OLIVE_GREEN | HSSFColor.ORANGE |
| HSSFColor.ORCHID | HSSFColor.PALE_BLUE |
| HSSFColor.PINK | HSSFColor.PLUM |
| HSSFColor.RED | HSSFColor.ROSE |
| HSSFColor.ROYAL_BLUE | HSSFColor.SEA_GREEN |
| HSSFColor.SKY_BLUE | HSSFColor.TAN |
| HSSFColor.TEAL | HSSFColor.TURQUOISE |
| HSSFColor.VIOLET | HSSFColor.WHITE |
| HSSFColor.YELLOW |
设定顔色时，用这些子类的静态常量「index」作为参数，使用方法如下：
HSSFWorkbook workbook = new HSSFWorkbook(); HSSFCellStyle style = workbook.createCellStyle(); style.setFillForegroundColor(HSSFColor.LIME.index); style.setFillBackgroundColor(HSSFColor.GREEN.index);
如果这些顔色还不够你用的话，那么下一节再介绍怎么设定自己想要的顔色。
填充模式
指定填充模式的话，使用「HSSFCellStyle」类的「setFillPattern」方法。
setFillPattern public void setFillPattern(short fp)
setting to one fills the cell with the foreground color ... No idea about other values Parameters: fp - fill pattern (set to 1 to fill w/foreground color)
指定的填充模式，在「HSSFCellStyle」类里也有定义，类型为static short型，如下所示：
| 值 | 说明 |
|---|---|
| NO_FILL | No background |
| SOLID_FOREGROUND | Solidly filled |
| FINE_DOTS | Small fine dots |
| ALT_BARS | Wide dots |
| SPARSE_DOTS | Sparse dots |
| THICK_HORZ_BANDS | Thick horizontal bands |
| THICK_VERT_BANDS | Thick vertical bands |
| THICK_BACKWARD_DIAG | Thick backward facing diagonals |
| THICK_FORWARD_DIAG | Thick forward facing diagonals |
| BIG_SPOTS | Large spots |
| BRICKS | Brick-like layout |
| THIN_HORZ_BANDS | Thin horizontal bands |
| THIN_VERT_BANDS | Thin vertical bands |
| THIN_BACKWARD_DIAG | Thin backward diagonal |
| THIN_FORWARD_DIAG | Thin forward diagonal |
| SQUARES | Squares |
| DIAMONDS | Diamonds |
实际的使用方法如下：
HSSFWorkbook workbook = new HSSFWorkbook(); HSSFCellStyle style = workbook.createCellStyle(); style.setFillForegroundColor(HSSFColor.LIME.index); style.setFillBackgroundColor(HSSFColor.GREEN.index); style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
示例程序
这就实际动手做做看吧，首先看一下定义的顔色到底是什么顔色，全部拉上来看看。
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[12];
for (int i = 0; i < 12 ; i++){
row[i] = sheet.createRow(i);
}
HSSFCell cell[][] = new HSSFCell[12][4];
for (int i = 0; i < 12; i++){
for (int j = 0; j < 4 ; j++){
cell[i][j] = row[i].createCell((short)j);
}
}
setStyle(cell[0][0], "AQUA", HSSFColor.AQUA.index);
setStyle(cell[0][1], "BLACK", HSSFColor.BLACK.index);
setStyle(cell[0][2], "BLUE", HSSFColor.BLUE.index);
setStyle(cell[0][3], "BLUE_GREY", HSSFColor.BLUE_GREY.index);
setStyle(cell[1][0], "BRIGHT_GREEN",
HSSFColor.BRIGHT_GREEN.index);
setStyle(cell[1][1], "BROWN", HSSFColor.BROWN.index);
setStyle(cell[1][2], "CORAL", HSSFColor.CORAL.index);
setStyle(cell[1][3], "CORNFLOWER_BLUE",
HSSFColor.CORNFLOWER_BLUE.index);
setStyle(cell[2][0], "DARK_BLUE", HSSFColor.DARK_BLUE.index);
setStyle(cell[2][1], "DARK_GREEN", HSSFColor.DARK_GREEN.index);
setStyle(cell[2][2], "DARK_RED", HSSFColor.DARK_RED.index);
setStyle(cell[2][3], "DARK_TEAL", HSSFColor.DARK_TEAL.index);
setStyle(cell[3][0], "DARK_YELLOW",
HSSFColor.DARK_YELLOW.index);
setStyle(cell[3][1], "GOLD", HSSFColor.GOLD.index);
setStyle(cell[3][2], "GREEN", HSSFColor.GREEN.index);
setStyle(cell[3][3], "GREY_25_PERCENT",
HSSFColor.GREY_25_PERCENT.index);
setStyle(cell[4][0], "GREY_40_PERCENT",
HSSFColor.GREY_40_PERCENT.index);
setStyle(cell[4][1], "GREY_50_PERCENT",
HSSFColor.GREY_50_PERCENT.index);
setStyle(cell[4][2], "GREY_80_PERCENT",
HSSFColor.GREY_80_PERCENT.index);
setStyle(cell[4][3], "INDIGO", HSSFColor.INDIGO.index);
setStyle(cell[5][0], "LAVENDER", HSSFColor.LAVENDER.index);
setStyle(cell[5][1], "LEMON_CHIFFON",
HSSFColor.LEMON_CHIFFON.index);
setStyle(cell[5][2], "LIGHT_BLUE",
HSSFColor.LIGHT_BLUE.index);
setStyle(cell[5][3], "LIGHT_CORNFLOWER_BLUE",
HSSFColor.LIGHT_CORNFLOWER_BLUE.index);
setStyle(cell[6][0], "LIGHT_GREEN",
HSSFColor.LIGHT_GREEN.index);
setStyle(cell[6][1], "LIGHT_ORANGE",
HSSFColor.LIGHT_ORANGE.index);
setStyle(cell[6][2], "LIGHT_TURQUOISE",
HSSFColor.LIGHT_TURQUOISE.index);
setStyle(cell[6][3], "LIGHT_YELLOW",
HSSFColor.LIGHT_YELLOW.index);
setStyle(cell[7][0], "LIME", HSSFColor.LIME.index);
setStyle(cell[7][1], "MAROON", HSSFColor.MAROON.index);
setStyle(cell[7][2], "OLIVE_GREEN",
HSSFColor.OLIVE_GREEN.index);
setStyle(cell[7][3], "ORANGE", HSSFColor.ORANGE.index);
setStyle(cell[8][0], "ORCHID", HSSFColor.ORCHID.index);
setStyle(cell[8][1], "PALE_BLUE", HSSFColor.PALE_BLUE.index);
setStyle(cell[8][2], "PINK", HSSFColor.PINK.index);
setStyle(cell[8][3], "PLUM", HSSFColor.PLUM.index);
setStyle(cell[9][0], "RED", HSSFColor.RED.index);
setStyle(cell[9][1], "ROSE", HSSFColor.ROSE.index);
setStyle(cell[9][2], "ROYAL_BLUE",
HSSFColor.ROYAL_BLUE.index);
setStyle(cell[9][3], "SEA_GREEN", HSSFColor.SEA_GREEN.index);
setStyle(cell[10][0], "SKY_BLUE", HSSFColor.SKY_BLUE.index);
setStyle(cell[10][1], "TAN", HSSFColor.TAN.index);
setStyle(cell[10][2], "TEAL", HSSFColor.TEAL.index);
setStyle(cell[10][3], "TURQUOISE",
HSSFColor.TURQUOISE.index);
setStyle(cell[11][0], "VIOLET", HSSFColor.VIOLET.index);
setStyle(cell[11][1], "WHITE", HSSFColor.WHITE.index);
setStyle(cell[11][2], "YELLOW", HSSFColor.YELLOW.index);
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 col, short fg){
HSSFCellStyle style = workbook.createCellStyle();
style.setFillForegroundColor(fg);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
cell.setCellStyle(style);
cell.setCellValue(col);
}
}
上面程序只指定了「ForegroundColor」，填充模式是「SOLID_FOREGROUND」，因此顔色应该是全部充满整个单元格的。运行结果如下：
下面再对填充模式进行各种修改来看看。
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][4];
for (int i = 0; i < 5; i++){
for (int j = 0; j < 4 ; j++){
cell[i][j] = row[i].createCell((short)j);
}
}
setStyle(cell[0][0], "NO_FILL", HSSFCellStyle.NO_FILL);
setStyle(cell[0][1], "SOLID_FOREGROUND",
HSSFCellStyle.SOLID_FOREGROUND);
setStyle(cell[0][2], "FINE_DOTS", HSSFCellStyle.FINE_DOTS);
setStyle(cell[0][3], "ALT_BARS", HSSFCellStyle.ALT_BARS);
setStyle(cell[1][0], "SPARSE_DOTS", HSSFCellStyle.SPARSE_DOTS);
setStyle(cell[1][1], "THICK_HORZ_BANDS",
HSSFCellStyle.THICK_HORZ_BANDS);
setStyle(cell[1][2], "THICK_VERT_BANDS",
HSSFCellStyle.THICK_VERT_BANDS);
setStyle(cell[1][3], "THICK_BACKWARD_DIAG",
HSSFCellStyle.THICK_BACKWARD_DIAG);
setStyle(cell[2][0], "THICK_FORWARD_DIAG",
HSSFCellStyle.THICK_FORWARD_DIAG);
setStyle(cell[2][1], "BIG_SPOTS", HSSFCellStyle.BIG_SPOTS);
setStyle(cell[2][2], "BRICKS", HSSFCellStyle.BRICKS);
setStyle(cell[2][3], "THIN_HORZ_BANDS",
HSSFCellStyle.THIN_HORZ_BANDS);
setStyle(cell[3][0], "THIN_VERT_BANDS",
HSSFCellStyle.THIN_VERT_BANDS);
setStyle(cell[3][1], "THIN_BACKWARD_DIAG",
HSSFCellStyle.THIN_BACKWARD_DIAG);
setStyle(cell[3][2], "THIN_FORWARD_DIAG",
HSSFCellStyle.THIN_FORWARD_DIAG);
setStyle(cell[3][3], "SQUARES", HSSFCellStyle.SQUARES);
setStyle(cell[4][0], "DIAMONDS", HSSFCellStyle.DIAMONDS);
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 fps,
short fp){
HSSFCellStyle style = workbook.createCellStyle();
style.setFillForegroundColor(HSSFColor.WHITE.index);
style.setFillForegroundColor(HSSFColor.LIGHT_ORANGE.index);
style.setFillPattern(fp);
cell.setCellStyle(style);
cell.setCellValue(fps);
}
}
上面固定了「ForegroundColor」和「BackgroundColor」，而填充模式则做了各种尝试。运行结果如下：