各种格式的编码解码工具类分享(hex解码 base64编码)

import java.io.unsupportedencodingexception;
import java.net.urldecoder;
import java.net.urlencoder;

import org.apache.commons.codec.decoderexception;
import org.apache.commons.codec.binary.base64;
import org.apache.commons.codec.binary.hex;
import org.apache.commons.lang.stringescapeutils;

/**
 * 各种格式的编码加码工具类.
 *
 * 集成commons-codec,commons-lang及jdk提供的编解码方法.
 *
 * 
 */
public class encodeutils {

 private static final string default_url_encoding = "utf-8";

 /**
  * hex编码.
  */
 /*public static string hexencode(byte[] input) {
  return hex.encodehexstring(input);
 }*/

 /**
  * hex解码.
  */
 public static byte[] hexdecode(string input) {
  try {
   return hex.decodehex(input.tochararray());
  } catch (decoderexception e) {
   throw new illegalstateexception("hex decoder exception", e);
  }
 }

 /**
  * base64编码.
  */
 public static string base64encode(byte[] input) {
  return new string(base64.encodebase64(input));
 }

 /**
  * base64编码, url安全(将base64中的url非法字符�?,/=转为其他字符, 见rfc3548).
  */
 public static string base64urlsafeencode(byte[] input) {
  return base64.encodebase64urlsafestring(input);
 }

 /**
  * base64解码.
  */
 public static byte[] base64decode(string input) {
  return base64.decodebase64(input);
 }

 /**
  * url 编码, encode默认为utf-8.
  */
 public static string urlencode(string input) {
  try {
   return urlencoder.encode(input, default_url_encoding);
  } catch (unsupportedencodingexception e) {
   throw new illegalargumentexception("unsupported encoding exception", e);
  }
 }

 /**
  * url 解码, encode默认为utf-8.
  */
 public static string urldecode(string input) {
  try {
   return urldecoder.decode(input, default_url_encoding);
  } catch (unsupportedencodingexception e) {
   throw new illegalargumentexception("unsupported encoding exception", e);
  }
 }

 /**
  * html 转码.
  */
 public static string htmlescape(string html) {
  return stringescapeutils.escapehtml(html);
 }

 /**
  * html 解码.
  */
 public static string htmlunescape(string htmlescaped) {
  return stringescapeutils.unescapehtml(htmlescaped);
 }

 /**
  * xml 转码.
  */
 public static string xmlescape(string xml) {
  return stringescapeutils.escapexml(xml);
 }

 /**
  * xml 解码.
  */
 public static string xmlunescape(string xmlescaped) {
  return stringescapeutils.unescapexml(xmlescaped);
 }
}