java中各种编码工具类和加密算法

public

class

Encodes {

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 shtml) {

return

StringEscapeUtils.escapeHtml4(shtml);

}

/**

* 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);

}

}

}