Imagebase64图片验证码工具类

雨点打透心脏的1/2处 2024-03-26 11:13 85阅读 0赞

public class Imagebase64 {
        
        static BASE64Encoder encoder = new BASE64Encoder();
        static BASE64Decoder decoder = new BASE64Decoder();
    
    
        public static String getImageBinary() {
        
            File f = new File("d://in.jpg");
            try {
        
                BufferedImage bi = ImageIO.read(f);
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                ImageIO.write(bi, "jpg", baos);
                byte[] bytes = baos.toByteArray();
    
                return encoder.encodeBuffer(bytes).trim();
            } catch (IOException e) {
        
                e.printStackTrace();
            }
            return null;
        }
    
        public static String getImage(String path) {
        
            File f = new File(path);
            try {
        
                BufferedImage bi = ImageIO.read(f);
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                ImageIO.write(bi, "jpg", baos);
                byte[] bytes = baos.toByteArray();
    
                return encoder.encodeBuffer(bytes).trim();
            } catch (IOException e) {
        
                e.printStackTrace();
            }
            return null;
        }
    
        public static boolean Base64ToImage(String imgStr,String imgFilePath) {
        
            if (StringUtils.isEmpty(imgStr)) // 图像数据为空
                return false;
            try {
        
                // Base64解码
                byte[] b = Base64Utils.decodeFromString(imgStr);
                for (int i = 0; i < b.length; ++i) {
        
                    if (b[i] < 0) {
        // 调整异常数据
                        b[i] += 256;
                    }
                }
                OutputStream out = new FileOutputStream(imgFilePath);
                out.write(b);
                out.flush();
                out.close();
                return true;
            } catch (Exception e) {
        
                return false;
            }
    
        }
    
    }