java圖片轉Base64工具類

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
/**
 * ImageBase64轉換類
 * @author admin
 */
public class ImageBase64Utils {
    /**
     * 將網絡圖片進行Base64位編碼
     * @param imageUrl 圖片的url路徑，如http://.....xx.jpg
     * @return
     */
    public static String encodeImgageToBase64(String imageUrl) {
        // 將圖片文件轉化爲字節數組字符串，並對其進行Base64編碼處理
        ByteArrayOutputStream outputStream = null;
        try {
            BufferedImage bufferedImage = ImageIO.read(new URL(imageUrl));
            outputStream = new ByteArrayOutputStream();
            ImageIO.write(bufferedImage, "jpg", outputStream);
        } catch (MalformedURLException e1) {
            e1.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // 對字節數組Base64編碼
        BASE64Encoder encoder = new BASE64Encoder();
        // 返回Base64編碼過的字節數組字符串
        return encoder.encode(outputStream.toByteArray());
    }
    /**
     * 將本地圖片進行Base64位編碼
     */
    public static String encodeImgageToBase64(File imageFile) {
        // 將圖片文件轉化爲字節數組字符串，並對其進行Base64編碼處理
        ByteArrayOutputStream outputStream = null;
        try {
            BufferedImage bufferedImage = ImageIO.read(imageFile);
            outputStream = new ByteArrayOutputStream();
            ImageIO.write(bufferedImage, "jpg", outputStream);
        } catch (MalformedURLException e1) {
            e1.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // 對字節數組Base64編碼
        BASE64Encoder encoder = new BASE64Encoder();
        // 返回Base64編碼過的字節數組字符串
        return encoder.encode(outputStream.toByteArray());
    }

    /**
     * 將Base64位編碼進行轉本地圖片
     */
    public static void decodeBase64ToImage(String base64, String path,String imgName) {
        BASE64Decoder decoder = new BASE64Decoder();
        try {
            FileOutputStream write = new FileOutputStream(new File(path
                    + imgName));
            byte[] decoderBytes = decoder.decodeBuffer(base64);
            write.write(decoderBytes);
            write.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}