网上的转换方式基本都是下面这种,但我转换后就是损坏。
BASE64Decoder decoder = new BASE64Decoder();
//Base64解码
byte[] b = decoder.decodeBuffer(imgfnPhoto);
for (int i = 0; i < b.length; ++i) {
if (b[i] < 0) {// 调整异常数据
b[i] += 256;
}
}
//生成jpg图片
String filename = this.createGUIDService.getGUID()+".jpg";
OutputStream out = new FileOutputStream(request.getRealPath("fsweb/workData/web") + "//" + filename);
out.write(b);
out.flush();
out.close();
改为下面的方式可以成功。
public static void tr(String imageString){
BufferedImage image = null;
byte[] imageByte = null;
try {
imageByte = DatatypeConverter.parseBase64Binary(imageString);
ByteArrayInputStream bis = new ByteArrayInputStream(imageByte);
image = ImageIO.read(new ByteArrayInputStream(imageByte));
bis.close();
File outputfile = new File("e:\\sealImg.bmp");
ImageIO.write(image, "bmp", outputfile);
} catch (IOException e) {
e.printStackTrace();
}
}