Menu
I have just tried a sample code form net it shows a warning as follows
SimpleConvertImage.java:7: warning:com.sun.org.apache.xerces.internal.impl.dv.util.Base64 is internal proprietary API and may be removed in a future release import com.sun.org.apache.xerces.internal.impl.dv.util.Base64; ^
SimpleConvertImage.java:16: warning: com.sun.org.apache.xerces.internal.impl.dv.util. Base64 is internal proprietary API and may be removed in a future release String base64String=Base64.encode(baos.toByteArray()); ^
SimpleConvertImage.java:19: warning: com.sun.org.apache.xerces.internal.impl.dv.util .Base64 is internal proprietary API and may be removed in a future release byte[] bytearray =Base64.decode(base64String); ^
the code is the below one
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 com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
public class SimpleConvertImage {
public static void main(String[] args) throws IOException{
String dirName="/root/Desktop";
ByteArrayOutputStream baos=new ByteArrayOutputStream(1000);
BufferedImage img=ImageIO.read(new File(dirName,"Screenshot.png"));
ImageIO.write(img, "png", baos);
baos.flush();
String base64String=Base64.encode(baos.toByteArray());
baos.close();
byte[] bytearray =Base64.decode(base64String);
BufferedImage imag=ImageIO.read(new ByteArrayInputStream(bytearray));
ImageIO.write(imag, "png", new File(dirName,"snap3.png"));
}
}
934
Base64 is not an encryption, it is an encoding. It's role is to make sure the password can be stored in the database nicely and special characters aren't a problem. It does nothing to protect the password. From security standpoint, it is exactly the same as storing it without any encoding.
Base64 Decode is very unique tool to decode base64 data to plain text. This tool saves your time and helps to decode base64 data. This tool allows loading the Base64 data URL, which loads base64 encoded text and decodes to human readable text.
Decode from Base64 format. Simply enter your data then push the decode button. For encoded binaries (like images, documents, etc.) use the file upload form a little further down on this page. Source character set.
When decoding Base64 text, four characters are typically converted back to three bytes. The only exceptions are when padding characters exist. A single = indicates that the four characters will decode to only two bytes, while == indicates that the four characters will decode to only a single byte.
Don't use internal com.sun.* packages. If you are on v6 or greater you can use DatatypeConverter. Your code would look like:
String base64String = DatatypeConverter.printBase64Binary(baos.toByteArray());
byte[] bytearray = DatatypeConverter.parseBase64Binary(base64String);
You can also use: java.util.Base64 Added to Java 1.8
String encryptedValue = new String(Base64.getEncoder().encode(bytesToEncode));
byte[] decodedValue = Base64.getDecoder().decode(encryptedDataString);
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
