jxl 自定义背景颜色——十六进制转化为Colour .

转自：http://blog.youkuaiyun.com/dongaoyuan/article/details/7616940

 

 

import java.awt.Color;  

import jxl.format.Colour;  

/** 

 * 将十六进制颜色转换为jxl可用的颜色 

 * @author AoYuan.Dong*/  

public class ColourUtil { 

public static Colour getNearestColour(String strColor) {
  Color cl = Color.decode(strColor);
  Colour color = null;
  Colour[] colors = Colour.getAllColours();
  if ((colors != null) && (colors.length > 0)) {
   Colour crtColor = null;
   int[] rgb = null;
   int diff = 0;
   int minDiff = 999;
   for (int i = 0; i < colors.length; i++) {
    crtColor = colors[i];
    rgb = new int[3];
    rgb[0] = crtColor.getDefaultRGB().getRed();
    rgb[1] = crtColor.getDefaultRGB().getGreen();
    rgb[2] = crtColor.getDefaultRGB().getBlue();

    diff = Math.abs(rgb[0] - cl.getRed())
      + Math.abs(rgb[1] - cl.getGreen())
      + Math.abs(rgb[2] - cl.getBlue());
    if (diff < minDiff) {
     minDiff = diff;
     color = crtColor;
    }
   }
  }
  if (color == null)
   color = Colour.BLACK;
  return color;
 }

 

     

 public static void main(String[] args){  

    System.out.print(getNearestColour("#FFFFFF"));  

}  

}