package net.java2000.tools;import java.util.HashMap;
/** *//**
* 替换HTMl里面的字符 e.g.: < > " å И 水 * * @author 赵学庆
*/public class HTMLDecoder ...{ public static final HashMap<String, Character> charTable;
public static String decode(String s) ...{ String t; Character ch; int tmpPos, i; int maxPos = s.length(); StringBuffer sb = new StringBuffer(maxPos); int curPos = 0; while (curPos < maxPos) ...{ char c = s.charAt(curPos++); if (c == '&') ...{ tmpPos = curPos; if (tmpPos < maxPos) ...{ char d = s.charAt(tmpPos++); if (d == '#') ...{ if (tmpPos < maxPos) ...{ d = s.charAt(tmpPos++); if ((d == 'x') || (d == 'X')) ...{ if (tmpPos < maxPos) ...{ d = s.charAt(tmpPos++); if (isHexDigit(d)) ...{ while (tmpPos < maxPos) ...{ d = s.charAt(tmpPos++); if (!isHexDigit(d)) ...{ if (d == ';') ...{ t = s.substring(curPos + 2, tmpPos - 1); try ...{ i = Integer.parseInt(t, 16); if ((i >= 0) && (i < 65536)) ...{ c = (char) i; curPos = tmpPos;
} } catch (NumberFormatException e) ...{ } } break; } } } } } else if (isDigit(d)) ...{ while (tmpPos < maxPos) ...{ d = s.charAt(tmpPos++); if (!isDigit(d)) ...{ if (d == ';') ...{ t = s.substring(curPos + 1, tmpPos - 1); try ...{ i = Integer.parseInt(t); if ((i >= 0) && (i < 65536)) ...{ c = (char) i; curPos = tmpPos; } } catch (NumberFormatException e) ...{ } } break; } } } } } else if (isLetter(d)) ...{ while (tmpPos < maxPos) ...{ d = s.charAt(tmpPos++); if (!isLetterOrDigit(d)) ...{ if (d == ';') ...{ t = s.substring(curPos, tmpPos - 1); ch = (Character) charTable.get(t); if (ch != null) ...{ c = ch.charValue(); curPos = tmpPos; } } break; } } } } } sb.append(c); } return sb.toString(); } private static boolean isLetterOrDigit(char c) ...{ return isLetter(c) || isDigit(c); } private static boolean isHexDigit(char c) ...{ return isHexLetter(c) || isDigit(c); } private static boolean isLetter(char c) ...{ return ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')); } private static boolean isHexLetter(char c) ...{ return ((c >= 'a') && (c <= 'f')) || ((c >= 'A') && (c <=