Monday, October 12, 2015

Minimalistic Java application to encode/decode in Base64

If your Outlook blocks all kind of attachments, you have here the FINAL resolution to the problem (Outlook doesn't check for Base64 text attachments)

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;


public class Decoder {

    public static void main(String[] args) throws Exception {
        if (args.length < 3) {
            System.out.println("Usage: java EncodeFileWithBASE64 d|e <inputFile> <outputFile>");
        String op = args[0];
        String inputFile = args[1];
        String outputFile = args[2];

        if (op.equalsIgnoreCase("e")) {
            BASE64Encoder encoder = new BASE64Encoder();
                    new FileInputStream(inputFile),
                    new FileOutputStream(outputFile)
        } else {
            BASE64Decoder decoder = new BASE64Decoder();
            decoder.decodeBuffer(new FileInputStream(inputFile),
                    new FileOutputStream(outputFile));


If you put in in Eclipse you get an error, and this is how to solve it: (it's easier to ignore errors than using an Apache Commons library)

Go to Window-->Preferences-->Java-->Compiler-->Error/Warnings.
 Select Deprecated and Restricted API. Change it to warning.
 Change forbidden and Discouraged Reference and change it to warning. 
You can also use this online application

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