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;
 
import javax.imageio.ImageIO;
 
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
 
/**
 * @author zxn
 * @version 创建时间：2014-7-2 上午11:40:40
 * 
 */
public class ImageUtils {
  /**
   * 将网络图片进行Base64位编码
   * 
   * @param imgUrl
   *      图片的url路径，如http://.....xx.jpg
   * @return
   */
  public static String encodeImgageToBase64(URL imageUrl) {// 将图片文件转化为字节数组字符串，并对其进行Base64编码处理
    ByteArrayOutputStream outputStream = null;
    try {
      BufferedImage bufferedImage = ImageIO.read(imageUrl);
      outputStream = new ByteArrayOutputStream();
      ImageIO.write(bufferedImage, "jpg", outputStream);
    } catch (MalformedURLException e1) {
      e1.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    // 对字节数组Base64编码
    BASE64Encoder encoder = new BASE64Encoder();
    return encoder.encode(outputStream.toByteArray());// 返回Base64编码过的字节数组字符串
  }
 
  /**
   * 将本地图片进行Base64位编码
   * 
   * @param imgUrl
   *      图片的url路径，如http://.....xx.jpg
   * @return
   */
  public static String encodeImgageToBase64(File imageFile) {// 将图片文件转化为字节数组字符串，并对其进行Base64编码处理
    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();
    }
    // 对字节数组Base64编码
    BASE64Encoder encoder = new BASE64Encoder();
    return encoder.encode(outputStream.toByteArray());// 返回Base64编码过的字节数组字符串
  }
 
  /**
   * 将Base64位编码的图片进行解码，并保存到指定目录
   * 
   * @param base64
   *      base64编码的图片信息
   * @return
   */
  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();
    }
  }
}