封装各种格式的编码解码工具类

/*

1.Commons-Codec的 hex/base64 编码
* 2.自制的base62 编码
* 3.Commons-Lang的xml/html escape
* 4.JDK提供的URLEncoder

*/

private static final String DEFAULT_URL_ENCODING = "UTF-8";
private static final char[] BASE62 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".toCharArray();

/**
* Hex编码.
*/
public static String encodeHex(byte[] input) {
return Hex.encodeHexString(input);
}

/**
* Hex解码.
*/
public static byte[] decodeHex(String input) {
try {
return Hex.decodeHex(input.toCharArray());
} catch (DecoderException e) {
throw Exceptions.unchecked(e);
}
}

/**
* Base64编码.
*/
public static String encodeBase64(byte[] input) {
return Base64.encodeBase64String(input);
}

/**
* Base64编码, URL安全(将Base64中的URL非法字符'+'和'/'转为'-'和'_', 见RFC3548).
*/
public static String encodeUrlSafeBase64(byte[] input) {
return Base64.encodeBase64URLSafeString(input);
}

/**
* Base64解码.
*/
public static byte[] decodeBase64(String input) {
return Base64.decodeBase64(input);
}

/**
* Base62编码。
*/
public static String encodeBase62(byte[] input) {
char[] chars = new char[input.length];
for (int i = 0; i < input.length; i++) {
chars[i] = BASE62[((input[i] & 0xFF) % BASE62.length)];
}
return new String(chars);
}

/**
* Html 转码.
*/
public static String escapeHtml(String html) {
return StringEscapeUtils.escapeHtml4(html);
}

/**
* Html 解码.
*/
public static String unescapeHtml(String htmlEscaped) {
return StringEscapeUtils.unescapeHtml4(htmlEscaped);
}

/**
* Xml 转码.
*/
public static String escapeXml(String xml) {
return StringEscapeUtils.escapeXml(xml);
}

/**
* Xml 解码.
*/
public static String unescapeXml(String xmlEscaped) {
return StringEscapeUtils.unescapeXml(xmlEscaped);
}

/**
* URL 编码, Encode默认为UTF-8.
*/
public static String urlEncode(String part) {
try {
return URLEncoder.encode(part, DEFAULT_URL_ENCODING);
} catch (UnsupportedEncodingException e) {
throw Exceptions.unchecked(e);
}
}

/**
* URL 解码, Encode默认为UTF-8.
*/
public static String urlDecode(String part) {

try {
return URLDecoder.decode(part, DEFAULT_URL_ENCODING);
} catch (UnsupportedEncodingException e) {
throw Exceptions.unchecked(e);
}
}