renzhexigua

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public final class Base64Util {
    private static final char[] legalChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".toCharArray();

    public static String encode(byte[] data) {
        int d;
        int len = data.length;