编码解码工具类

2023-04-23 19:44| 来源: 网络整理| 查看: 265

编码解码工具类原创

mb64390262217c2 2023-04-14 19:47:12 博主文章分类：java ©著作权

文章标签 java xml html apache 文章分类 JavaScript 前端开发

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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; /** * 封装各种格式的编码解码工具类. * * 1.Commons-Codec的hex/base64 编码 * 2.Commons-Lang的xml/html escape * 3.JDK提供的URLEncoder * */ public abstract class EncodeUtils { private static final String ALPHABET = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; private static final String DEFAULT_URL_ENCODING = "UTF-8"; /** * Hex编码, byte[]->String. */ public static String encodeHex(byte[] input) { return Hex.encodeHexString(input); } /** * Hex解码, String->byte[]. */ public static byte[] decodeHex(String input) { try { return Hex.decodeHex(input.toCharArray()); } catch (DecoderException e) { throw new IllegalStateException("Hex Decoder exception", e); } } /** * Base64编码, byte[]->String. */ 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, String->byte[]. */ public static byte[] decodeBase64(String input) { return Base64.decodeBase64(input); } /** * Base62(0_9A_Za_z)编码数字, long->String. */ public static String encodeBase62(long num) { return alphabetEncode(num, 62); } /** * Base62(0_9A_Za_z)解码数字, String->long. */ public static long decodeBase62(String str) { return alphabetDecode(str, 62); } private static String alphabetEncode(long num, int base) { num = Math.abs(num); StringBuilder sb = new StringBuilder(); for (; num > 0; num /= base) { sb.append(ALPHABET.charAt((int) (num % base))); } return sb.toString(); } private static long alphabetDecode(String str, int base) { AssertUtils.hasText(str); long result = 0; for (int i = 0; i < str.length(); i++) { result += ALPHABET.indexOf(str.charAt(i)) * Math.pow(base, i); } return result; } /** * 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 ExceptionUtils.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 ExceptionUtils.unchecked(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); } }

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