BASE64Encoder_ImgTransform

package cn.cnnic.api.client.commons;  
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;  
  
  
/** 
 * BASE64Encoder and Image transform 
 * @author  Dengshimei  
 */  
  
public class ImgTransform   
{  
    BASE64Encoder encoder = new sun.misc.BASE64Encoder();      
    BASE64Decoder decoder = new sun.misc.BASE64Decoder();  
      
    public ImgTransform()  
    {  
        //Init or do something.  
    }  
      
    //BASE64Encoder to image file  
    public File base64StringToImage(String base64String, String imgName)  
    {     
        imgName = imgName.toLowerCase();  
        if(base64String !=  null && base64String.length() > 0)  
        {  
            File file = new File("cnnicUploadImgTemp" + File.separator + imgName + ".jpg"); //jpg, png, gif      
            try   
            {      
                byte[] bytes1 = decoder.decodeBuffer(base64String);  
                ByteArrayInputStream bais = new ByteArrayInputStream(bytes1);  
                BufferedImage bi1 = ImageIO.read(bais);            
                ImageIO.write(bi1, "jpg", file);    //          ，        
                file.deleteOnExit();                //                         
                return file;  
            }   
            catch (Exception e)   
            {      
                System.out.println("===== Run base64StringToImage method fail!");    
            }  
        }  
        return null;      
    }  
      
    //Image file to BASE64Encoder. Param:imgPath = d://pic3.jpg  
    public String getImageBinary(String imgPath)  
    {      
        if(imgPath != null && imgPath.length() > 0)  
        {  
            File file = new File(imgPath);  
            BufferedImage bufferedImage;      
            try   
            {      
                bufferedImage = ImageIO.read(file);      
                ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();      
                ImageIO.write(bufferedImage, "jpg", byteArrayOutputStream);      
                byte[] bytes = byteArrayOutputStream.toByteArray();                      
                return encoder.encodeBuffer(bytes).trim();      
            }   
            catch (IOException e)   
            {      
                e.printStackTrace();      
            }  
        }  
        return null;      
    }  
      
    //Files destroy  
    public void filesDestroy(File[] files)  
    {  
        for(int i = 0; i < files.length; i++)  
        {  
            if(files[i] != null && files[i].length() > 0)  
            {  
                files[i].delete();  
            }  
        }         
        files = null;  
    }  
}