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);  } }