java EncodeUtils

EncodeUtils [Utils]
Posted on 2010-01-04 by panqunjun

// 来自springside3

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.
 *
 * @author calvin
 */
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 Base64.encodeBase64String(input);
 }

 /**
  * Base64编码, URL安全(对URL不支持的字符如+,/,=转为其他字符, 见RFC354 8) .
  */
 public static String base64UrlEncode(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) {
  return urlEncode(input, DEFAULT_URL_ENCODING);
 }

 /**
  * URL 编码.
  */
 public static String urlEncode(String input, String encoding) {
  try {
   return URLEncoder.encode(input, 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) {
  return urlDecode(input, DEFAULT_URL_ENCODING);
 }

 /**
  * URL 解码.
  */
 public static String urlDecode(String input, String encoding) {
  try {
   return URLDecoder.decode(input, 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 反转码.
  */
 public static String htmlUnescape(String htmlEscaped) {
  return StringEscapeUtils.unescapeHtml(htmlEscaped);
 }

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

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

}