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Editorial Team
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Asked: 2026-05-18T23:26:51+00:00

I get a string from my HTML page into my Java HTTPServlet. On my

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I get a string from my HTML page into my Java HTTPServlet.
On my request I get ASCII codes that display Chinese characters:

“& #21487;& #20197;& #21578;& #35785;& #25105;” (without the spaces)

How can I transform this string into Unicode?

HTML code:

<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title>Find information</title>
    <link rel="stylesheet" type="text/css" href="layout.css">
</head>
<body>

<form id="lookupform" name="lookupform" action="LookupServlet" method="post" accept-charset="UTF-8">
    <table id="lookuptable" align="center">
        <tr>
            <label>Question:</label>
            <td><textarea cols="30" rows="2" name="lookupstring" id="lookupstring"></textarea></td>
        </tr>
    </table>
    <input type="submit" name="Look up" id="lookup" value="Look up"/>
</form>

Java code:

request.setCharacterEncoding("UTF-8");
javax.servlet.http.HttpSession session = request.getSession();
LoginResult lr = (LoginResult) session.getAttribute("loginResult");
String[] question = request.getParameterValues("lookupstring");

If I print question[0] then I get this value:
“& #21487;& #20197;& #21578;& #35785;& #25105;”

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1 Answer

  1. Editorial Team

    There is no such thing as ASCII codes that display Chinese characters. ASCII does not represent Chinese characters.

    If you already have a Java string, it already has an internal representation of all characters (US, LATIN, CHINESE). You can then encode that Java string into Unicode using UTF-8 or UTF-16 representations:

    String s = “可以告诉我”; (EDIT: This line won’t display correctly on systems not having fonts for Chinese characters)

    String s = "\u53ef\u4ee5\u544a\u8bc9\u6211";
byte utfString = s.getBytes("UTF-8");

    Now that I look at your updated question, you might be looking for the StringEscapeUtils class. It’s from Apache Commons Text. And will unescape your HTML entities into a Java string:

    String s = StringEscapeUtils.unescapeHtml("& #21487;& #20197;& #21578;& #35785;& #25105;"); // without spaces
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