1 public  void getBMPImage(String source) throws Exception { 2  3          clearNData();                        //清除数据保存区 4          FileInputStream fs = null; 5  6         try { 7             fs = new FileInputStream(source); 8             int bfLen = 14; 9             byte bf[] = new byte[bfLen];10             fs.read(bf, 0, bfLen); // 读取14字节BMP文件头11             int biLen = 40;12             byte bi[] = new byte[biLen];13             fs.read(bi, 0, biLen); // 读取40字节BMP信息头14             // 源图宽度15             nWidth = (((int) bi[7] & 0xff) << 24)16                     | (((int) bi[6] & 0xff) << 16)17                     | (((int) bi[5] & 0xff) << 8) | (int) bi[4] & 0xff;18             // 源图高度19             nHeight = (((int) bi[11] & 0xff) << 24)20                     | (((int) bi[10] & 0xff) << 16)21                     | (((int) bi[9] & 0xff) << 8) | (int) bi[8] & 0xff;22             // 位数23             nBitCount = (((int) bi[15] & 0xff) << 8) | (int) bi[14] & 0xff;24             // 源图大小25             int nSizeImage = (((int) bi[23] & 0xff) << 24)26                     | (((int) bi[22] & 0xff) << 16)27                     | (((int) bi[21] & 0xff) << 8) | (int) bi[20] & 0xff;28             // 对24位BMP进行解析29             if (nBitCount == 24){30                 int nPad = (nSizeImage / nHeight) - nWidth * 3;31                 nData = new int[nHeight * nWidth];32                 nB=new int[nHeight * nWidth];33                 nR=new int[nHeight * nWidth];34                 nG=new int[nHeight * nWidth];35                 byte bRGB[] = new byte[(nWidth + nPad) * 3 * nHeight];36                 fs.read(bRGB, 0, (nWidth + nPad) * 3 * nHeight);37                 int nIndex = 0;38                 for (int j = 0; j < nHeight; j++){39                     for (int i = 0; i < nWidth; i++) {40                         nData[nWidth * (nHeight - j - 1) + i] = (255 & 0xff) << 2441                                 | (((int) bRGB[nIndex + 2] & 0xff) << 16)42                                  | (((int) bRGB[nIndex + 1] & 0xff) << 8)43                                 | (int) bRGB[nIndex] & 0xff;                      44                         nB[nWidth * (nHeight - j - 1) + i]=(int) bRGB[nIndex]& 0xff;45                         nG[nWidth * (nHeight - j - 1) + i]=(int) bRGB[nIndex+1]& 0xff;46                         nR[nWidth * (nHeight - j - 1) + i]=(int) bRGB[nIndex+2]& 0xff;47                         nIndex += 3;48                     }49                     nIndex += nPad;50                 }51  //               Toolkit kit = Toolkit.getDefaultToolkit();52  //               image = kit.createImage(new MemoryImageSource(nWidth, nHeight,53  //                       nData, 0, nWidth));54 /*               55 //调试数据的读取56                 FileWriter fw = new FileWriter("C:\\Documents and Settings\\Administrator\\My Documents\\nDataRaw.txt");//创建新文件57                 PrintWriter out = new PrintWriter(fw);58                 for(int j=0;j