本文實例為大家分享了java用Excel將圖片畫出來的具體代碼，供大家參考，具體內容如下

能夠將任何圖片在excel上利用單元格背景完整的描繪出來。

像網絡上出現的用excel畫出超級瑪麗等等，各種圖片都能在excel上'畫'出來。

圖片我沒有經過特殊處理，所以轉換的圖片不能太大，有多大的圖片就要有多少的單元格。如640*480就有307200的單元格。

如要轉換的圖片：

轉換后在excel中的效果：

沒多大意義練練手:

import java.awt.Color;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import java.util.Locale; import javax.swing.ImageIcon; import jxl.Workbook;import jxl.WorkbookSettings;import jxl.format.Colour;import jxl.read.biff.BiffException;import jxl.write.Label;import jxl.write.WritableCellFormat;import jxl.write.WritableSheet;import jxl.write.WritableWorkbook; public class Helper { private BufferedImage getBufferedImage(String filepath) { ImageIcon imgicon=new ImageIcon(filepath); BufferedImage bufferedImage = new BufferedImage(imgicon.getIconWidth(),imgicon.getIconHeight(),BufferedImage.TYPE_INT_RGB); bufferedImage.createGraphics().drawImage(imgicon.getImage(), 0, 0,null); return bufferedImage; } private Colour getNearestColour(Color awtColor) { 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] - awtColor.getRed()) + Math.abs(rgb[1] - awtColor.getGreen()) + Math.abs(rgb[2] - awtColor.getBlue()); if (diff < minDiff) { minDiff = diff; color = crtColor; } } } if (color == null) color = Colour.BLACK; return color; } public void exec(String convertFromImage,String createxls) throws Exception { WorkbookSettings ws = new WorkbookSettings(); ws.setLocale(new Locale('en', 'EN')); WritableWorkbook workbook = Workbook.createWorkbook(new File(createxls), ws); WritableSheet s2 = workbook.createSheet('picture', 0); BufferedImage buffimage= getBufferedImage(convertFromImage); int width=buffimage.getWidth(); int heigh=buffimage.getHeight(); for(int i=0;i<width;i++) { for(int h=0;h<heigh;h++) { WritableCellFormat greyBackground = new WritableCellFormat(); Color c = new Color(buffimage.getRGB(i, h));greyBackground.setBackground( getNearestColour(c) ); Label lr = new Label(i, h, '', greyBackground); s2.addCell(lr); } } //寫入Excel對象 workbook.write(); workbook.close(); } /** * @param args * @throws IOException * @throws BiffException */ public static void main(String[] args) throws Exception { Helper helper=new Helper(); System.out.println('輸入的圖片：'+args[0]); System.out.println('輸出的excel：'+args[1]); System.out.println('轉換開始'); //轉換執行的方法參數 args[0]輸入的圖片路徑 args[1]輸出的excel路徑// helper.exec( 'mslogo.jpg','1.xls'); helper.exec(args[0],args[1]); } }

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持好吧啦網。