Escapes an XML string by replacing the characters shown below with their equivalent entity references as defined by the XML specification - Java XML

Java examples for XML:XML String Escape

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Description

Escapes an XML string by replacing the characters shown below with their equivalent entity references as defined by the XML specification

Demo Code

import java.io.PrintWriter;
import java.io.StringWriter;

public class Main{

    public static void main(String[] argv){
        String str = "<java2s.com>";
        System.out.println(encodeXML(str));
    }//from w  w w.  j  av  a2s. c o  m
    /**
     *  Escapes an XML string by replacing the characters shown below with their
     *  equivalent entity references as defined by the XML specification.<p>
     *
     *  <table>
     *      <tr><td>Character</td><td>Entity Reference</td></tr>
     *      <tr><td>&lt;</td><td>&amp;lt;</td></tr>
     *      <tr><td>&gt;</td><td>&amp;gt;</td></tr>
     *      <tr><td>&amp;</td><td>&amp;amp;</td></tr>
     *      <tr><td>&apos;</td><td>&amp;apos;</td></tr>
     *      <tr><td>&quot;</td><td>&amp;quot;</td></tr>
     *  </table>
     *
     *  @param str The source string
     *  @return The escaped string
     */
    public static String encodeXML(String str) {
        if (str == null)
            return null;

        StringBuilder b = new StringBuilder();

        int cnt = str.length();
        for (int i = 0; i < cnt; i++) {
            char c = str.charAt(i);

            switch (c) {
            case '<':
                b.append("&lt;");
                break;
            case '>':
                b.append("&gt;");
                break;
            case '\'':
                b.append("&apos;");
                break;
            case '"':
                b.append("&quot;");
                break;
            case '&':
                b.append("&amp;");
                break;
            default:
                b.append((char) c);
            }
        }

        return b.toString();
    }

}

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