package com.gootrip.util;
import java.io.UnsupportedEncodingException;/**
* <p>Title:字符编码工具类 </p>
*/
public class CharTools {/*** 转换编码 ISO-8859-1到GB2312* @param text* @return*/public static final String ISO2GB(String text) {String result = "";try {result = new String(text.getBytes("ISO-8859-1"), "GB2312");}catch (UnsupportedEncodingException ex) {result = ex.toString();}return result;}/*** 转换编码 GB2312到ISO-8859-1* @param text* @return*/public static final String GB2ISO(String text) {String result = "";try {result = new String(text.getBytes("GB2312"), "ISO-8859-1");}catch (UnsupportedEncodingException ex) {ex.printStackTrace();}return result;}/*** Utf8URL编码* @param s* @return*/public static final String Utf8URLencode(String text) {StringBuffer result = new StringBuffer();for (int i = 0; i < text.length(); i++) {char c = text.charAt(i);if (c >= 0 && c <= 255) {result.append(c);}else {byte[] b = new byte[0];try {b = Character.toString(c).getBytes("UTF-8");}catch (Exception ex) {}for (int j = 0; j < b.length; j++) {int k = b[j];if (k < 0) k += 256;result.append("%" + Integer.toHexString(k).toUpperCase());}}}return result.toString();}/*** Utf8URL解码* @param text* @return*/public static final String Utf8URLdecode(String text) {String result = "";int p = 0;if (text!=null && text.length()>0){text = text.toLowerCase();p = text.indexOf("%e");if (p == -1) return text;while (p != -1) {result += text.substring(0, p);text = text.substring(p, text.length());if (text == "" || text.length() < 9) return result;result += CodeToWord(text.substring(0, 9));text = text.substring(9, text.length());p = text.indexOf("%e");}}return result + text;}/*** utf8URL编码转字符* @param text* @return*/private static final String CodeToWord(String text) {String result;if (Utf8codeCheck(text)) {byte[] code = new byte[3];code[0] = (byte) (Integer.parseInt(text.substring(1, 3), 16) - 256);code[1] = (byte) (Integer.parseInt(text.substring(4, 6), 16) - 256);code[2] = (byte) (Integer.parseInt(text.substring(7, 9), 16) - 256);try {result = new String(code, "UTF-8");}catch (UnsupportedEncodingException ex) {result = null;}}else {result = text;}return result;}/*** 编码是否有效* @param text* @return*/private static final boolean Utf8codeCheck(String text){String sign = "";if (text.startsWith("%e"))for (int i = 0, p = 0; p != -1; i++) {p = text.indexOf("%", p);if (p != -1)p++;sign += p;}return sign.equals("147-1");}/*** 判断是否Utf8Url编码* @param text* @return*/public static final boolean isUtf8Url(String text) {text = text.toLowerCase();int p = text.indexOf("%");if (p != -1 && text.length() - p > 9) {text = text.substring(p, p + 9);}return Utf8codeCheck(text);}
}