1、编码与解码代码如下所示:
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();
}
}
}
2、直接在页面上显示base64编码的图片
<html>
<body>
<img src='data:image/jpg;base64,base64码'/> </body>
</html>