Here you can find the source of base64Encode(byte[] in)
| Parameter | Description |
|---|---|
| in | An array containing the data bytes to be encoded. |
| iOff | Offset of the first byte in <code>in</code> to be processed. |
| iLen | Number of bytes to process in <code>in</code>, starting at <code>iOff</code>. |
public static String base64Encode(byte[] in)
//package com.java2s; /*/* w w w. j ava 2s. c o m*/ * Copyright 2003-2010 Christian d'Heureuse, Inventec Informatik AG, Zurich, Switzerland * www.source-code.biz, www.inventec.ch/chdh * * This module is multi-licensed and may be used under the terms of any of the following licenses: * * EPL, Eclipse Public License, V1.0 or later, http://www.eclipse.org/legal * LGPL, GNU Lesser General Public License, V2.1 or later, http://www.gnu.org/licenses/lgpl.html * GPL, GNU General Public License, V2 or later, http://www.gnu.org/licenses/gpl.html * AL, Apache License, V2.0 or later, http://www.apache.org/licenses * BSD, BSD License, http://www.opensource.org/licenses/bsd-license.php * MIT, MIT License, http://www.opensource.org/licenses/MIT * * Please contact the author if you need another license. * This module is provided "as is", without warranties of any kind. * * For the purposes of Mace Swinger, we are using the MIT license */ public class Main { private static final char[] map1 = new char[64]; /** * Encodes a byte array into Base64 format. No blanks or line breaks are inserted in the output. * * @param in * An array containing the data bytes to be encoded. * @param iOff * Offset of the first byte in <code>in</code> to be processed. * @param iLen * Number of bytes to process in <code>in</code>, starting at <code>iOff</code>. * @return A character array containing the Base64 encoded data. */ public static String base64Encode(byte[] in) { int iOff = 0; int iLen = in.length; int oDataLen = (iLen * 4 + 2) / 3; int oLen = ((iLen + 2) / 3) * 4; char[] out = new char[oLen]; int ip = iOff; int iEnd = iOff + iLen; int op = 0; while (ip < iEnd) { int i0 = in[ip++] & 0xff; int i1 = ip < iEnd ? in[ip++] & 0xff : 0; int i2 = ip < iEnd ? in[ip++] & 0xff : 0; int o0 = i0 >>> 2; int o1 = ((i0 & 3) << 4) | (i1 >>> 4); int o2 = ((i1 & 0xf) << 2) | (i2 >>> 6); int o3 = i2 & 0x3F; out[op++] = map1[o0]; out[op++] = map1[o1]; out[op] = op < oDataLen ? map1[o2] : '='; op++; out[op] = op < oDataLen ? map1[o3] : '='; op++; } return new String(out); } }