org.nerve.utils.encode.EncodeUtils.java Source code

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Here is the source code for org.nerve.utils.encode.EncodeUtils.java

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/**
 *  Copyright (c) 2012-2014 http://www.eryansky.com
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 */
package org.nerve.utils.encode;

import org.apache.commons.codec.DecoderException;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.lang3.StringEscapeUtils;

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;

/**
 * ?????.
 * 
 * ?Commons-Codec,Commons-Lang?JDK???.
 */
public class EncodeUtils {

    private static final String DEFAULT_URL_ENCODING = "UTF-8";

    public static String hexEncode(byte[] input) {
        return Hex.encodeHexString(input);
    }

    public static byte[] hexDecode(String input) {
        try {
            return Hex.decodeHex(input.toCharArray());
        } catch (DecoderException e) {
            throw new IllegalStateException("Hex Decoder exception", e);
        }
    }

    public static String base64Encode(byte[] input) {
        return new String(Base64.encodeBase64(input));
    }

    public static String base64UrlSafeEncode(byte[] input) {
        return Base64.encodeBase64URLSafeString(input);
    }

    public static byte[] base64Decode(String input) {
        return Base64.decodeBase64(input);
    }

    public static String urlEncode(String input) {
        try {
            return URLEncoder.encode(input, DEFAULT_URL_ENCODING);
        } catch (UnsupportedEncodingException e) {
            throw new IllegalArgumentException("Unsupported Encoding Exception", e);
        }
    }

    public static String urlDecode(String input) {
        try {
            return URLDecoder.decode(input, DEFAULT_URL_ENCODING);
        } catch (UnsupportedEncodingException e) {
            throw new IllegalArgumentException("Unsupported Encoding Exception", e);
        }
    }

    private static final int HASH_INTERATIONS = 1024;

    public static String encryptPassword(String plainPassword, String salt) {
        byte[] saltByte = EncodeUtils.hexDecode(salt);
        byte[] hashPassword = Digests.sha1(plainPassword.getBytes(), saltByte, HASH_INTERATIONS);
        return EncodeUtils.hexEncode(hashPassword);
    }

    public static String htmlEscape(String html) {
        return StringEscapeUtils.escapeHtml4(html);
    }

    public static String htmlUnescape(String htmlEscaped) {
        return StringEscapeUtils.unescapeHtml4(htmlEscaped);
    }

    public static String xmlEscape(String xml) {
        return StringEscapeUtils.escapeXml(xml);
    }

    public static String xmlUnescape(String xmlEscaped) {
        return StringEscapeUtils.unescapeXml(xmlEscaped);
    }

}