Java HTML Escape escapeHTML(String aText)

Description

escape HTML

License

Open Source License

Declaration

public static String escapeHTML(String aText) 

Method Source Code

//package com.java2s;
/*//from  w w w  . ja  v  a2  s .c o  m
 * Copyright (C) 2010 Viettel Telecom. All rights reserved.
 * VIETTEL PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

import java.text.CharacterIterator;
import java.text.StringCharacterIterator;

public class Main {
    public static String escapeHTML(String aText) {
        if (aText == null) {
            return null;
        }
        final StringBuilder result = new StringBuilder();
        final StringCharacterIterator iterator = new StringCharacterIterator(aText);
        char character = iterator.current();
        while (character != CharacterIterator.DONE) {
            if (character == '<') {
                result.append("&lt;");
            } else if (character == '>') {
                result.append("&gt;");
            } else if (character == '&') {
                result.append("&amp;");
            } else if (character == '\"') {
                result.append("&quot;");
            } else if (character == '\t') {
                addCharEntity(9, result);
            } //            } else if (character == '!') {
              ////                addCharEntity(33, result);
              //            } else if (character == '#') {
              ////                addCharEntity(35, result);
              //            } else if (character == '$') {
              ////                addCharEntity(36, result);
              //            } else if (character == '%') {
              ////                addCharEntity(37, result);
            else if (character == '\'') {
                addCharEntity(39, result);
            } // else if (character == '(') {
              ////                addCharEntity(40, result);
              //            } else if (character == ')') {
              ////                addCharEntity(41, result);
              //            } else if (character == '*') {
              ////                addCharEntity(42, result);
              //            } else if (character == '+') {
              ////                addCharEntity(43, result);
              //            } else if (character == ',') {
              ////                addCharEntity(44, result);
              //            } else if (character == '-') {
              ////                addCharEntity(45, result);
              //            } else if (character == '.') {
              ////                addCharEntity(46, result);
              //            } else if (character == '/') {
              ////                addCharEntity(47, result);
              //            } else if (character == ':') {
              ////                addCharEntity(58, result);
              //            } else if (character == ';') {
              ////                addCharEntity(59, result);
              //            } else if (character == '=') {
              ////                addCharEntity(61, result);
              //            } else if (character == '?') {
              ////                addCharEntity(63, result);
              //            } else if (character == '@') {
              ////                addCharEntity(64, result);
              //            } else if (character == '[') {
              ////                addCharEntity(91, result);
              //            } else if (character == '\\') {
              ////                addCharEntity(92, result);
              //            } else if (character == ']') {
              ////                addCharEntity(93, result);
              //            } else if (character == '^') {
              ////                addCharEntity(94, result);
              //            } else if (character == '_') {
              ////                addCharEntity(95, result);
              //            } else if (character == '`') {
              ////                addCharEntity(96, result);
              //            } else if (character == '{') {
              ////                addCharEntity(123, result);
              //            } else if (character == '|') {
              ////                addCharEntity(124, result);
              //            } else if (character == '}') {
              ////                addCharEntity(125, result);
              //            } else if (character == '~') {
              ////                addCharEntity(126, result);
              //            } 
            else {
                //the char is not a special one
                //add it to the result as is
                result.append(character);
            }
            character = iterator.next();
        }
        return result.toString();
    }

    private static void addCharEntity(Integer aIdx, StringBuilder aBuilder) {
        String padding = "";
        if (aIdx <= 9) {
            padding = "00";
        } else if (aIdx <= 99) {
            padding = "0";
        } else {
            //no prefix
        }
        String number = padding + aIdx.toString();
        aBuilder.append("&#" + number + ";");
    }
}

Related

1. escapeHtml(String s)
2. escapeHTML(String s)
3. escapeHTML(String s)
4. escapeHtml(String s)