Convert Image to Base64 using Apache Commons

Question

I'm using BASE64Encoder of Sun Micro Systems to convert image to Base64 string. The problem is that I'm getting warnings during build which I don't want

Java Code..

     public static String encodeToString(BufferedImage image, String type) {
    String base64String = null;
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    try {
    ImageIO.write(image, type, bos);
    byte[] imageBytes = bos.toByteArray();
    BASE64Encoder encoder = new BASE64Encoder();
    base64String = encoder.encode(imageBytes);
    bos.close();
    } catch (IOException e) {
    e.printStackTrace();
    }
    return base64String;
    }

Warnings:

  [javac] /Users/lucy/dev/workspace/flsv2/src/util/BufferImage.java:53: warning: BASE64Encoder is internal proprietary API and may be removed in a future release 
  [javac] BASE64Encoder encoder = new BASE64Encoder(); 
  [javac] ^ 
  [javac] /Users/lucy/dev/workspace/flsv2/src/util/BufferImage.java:53: warning: BASE64Encoder is internal proprietary API and may be removed in a future release 
  [javac] BASE64Encoder encoder = new BASE64Encoder(); 
  [javac] ^ 
  [javac] 2 warnings

Is there a way to use Apache Commons in the above method so that no warnings are generated? Please Help..

score 4 · Answer 1 · edited May 23 '17 at 12:15

Please do not use internal com.sun.* packages. If you are on v6 or greater you can use DatatypeConverter. Then your code will be look like below.

String base64String = DatatypeConverter.printBase64Binary(baos.toByteArray());
byte[] bytearray = DatatypeConverter.parseBase64Binary(base64String);

Or,

You can also use: java.util.Base64 which is added in Java 1.8

String base64String = new String(Base64.getEncoder().encode(bytesToEncode));
byte[] decordedValue = Base64.getDecoder().decode(base64String);

Or, you can make a method calling procedure in apache commons that is given below

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.binary.StringUtils;

public String decode(String s) {
    return StringUtils.newStringUtf8(Base64.decodeBase64(s));
}
public String encode(String s) {
    return Base64.encodeBase64String(StringUtils.getBytesUtf8(s));
}

Convert Image to Base64 using Apache Commons

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