image-base64互转

     package base64StringToImage;

     import java.awt.image.BufferedImage;

     import java.io.ByteArrayInputStream;

     import java.io.ByteArrayOutputStream;

     import java.io.File;

     import java.io.IOException;

     import javax.imageio.ImageIO;

     import sun.misc.BASE64Decoder;

     import sun.misc.BASE64Encoder;  

     public class TestImageBinary {  

         /**

          *

          *@param filePath 照片绝对路径

          *@return String base64码字符串

          *

          **/

         public String changeImagetoBase64String(String filePath){

             BASE64Encoder encoder = new BASE64Encoder();

             String base64String = "";

             File file = new File(filePath);

             BufferedImage buffer;

             try {

                 buffer = ImageIO.read(file);

                 ByteArrayOutputStream baos = new ByteArrayOutputStream();

                 ImageIO.write(buffer, "jpg", baos);  //第二个参数“jpg”不需要修改

                 byte[] bytes = baos.toByteArray();

                 base64String = encoder.encodeBuffer(bytes).trim();

             } catch (IOException e) {

                 e.printStackTrace();

             }

             return base64String;

         }  

         /**

          *

          *@param base64String base64码字符串

          *@param filePath 照片绝对路径

          *

          **/

         public void changeBase64StringtoImage(String base64String, String filePath){

             BASE64Decoder decoder = new BASE64Decoder();

             try {

                 byte[] bytes = decoder.decodeBuffer(base64String);

                 ByteArrayInputStream bais = new ByteArrayInputStream(bytes);

                 BufferedImage buffer =ImageIO.read(bais);

                 File file = new File(filePath);         //jpg,png,gif等格式

                 ImageIO.write(buffer, "jpg", file);     //第二个参数“jpg”不需要修改

             } catch (IOException e) {

                 e.printStackTrace();

             }

         }

     }

在页面可以直接使用base64码显示照片：

 <body>

     <span><img width=100 height=100 src="data:image/gif;base64,（base64编码后的照片数据）"/></span>

 </body>

巴特西

image-base64互转

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