Hi,
The following JSP presents a well-known problem found all over the web
regarding GET form submissions not encoding form parameters properly. The issue
does not exist with POST.
I have read just about every article on the web about this issue, and the below
JSP incorporates all of the solutions.
However, it still does not work and I wonder having seen a few suggestions that
this could be the fault of Tomcat, whether there is any truth in this, since an
equivalent ASP test does not exhibit the issue.
I have used the below JSP test with both a SetCharacterEncodingFilter in front,
and without (this is also catered for by the request.setCharacterEncoding
call).
Everything reads UTF-8 except when you submit the word Amélie into the form,
the output is broken. Interestingly, the QENC string which converts the
request.getParameter to UTF-8 fixes the string. This is impracticle I would
have thought and should be converted by Tomcat given the request encoding which
is correctly set.
My question - is this a Tomcat bug, a Tomcat caveat, or my own silly fault?
Thanks, Allistair
== snip ==
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page language="java" contentType="text/html;charset=UTF-8" %>
<% request.setCharacterEncoding("UTF-8"); %>
<html>
<head>
<title>Form Encoding Test with - Amélie</title>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
</head>
<body>
<p>Submit the form with <b>Amélie</b></p>
<p>request.getCharacterEncoding() : <%= request.getCharacterEncoding()
%></p>
<p>response.getCharacterEncoding() : <%= response.getCharacterEncoding()
%></p>
<p>
<%
String q = request.getParameter("q");
String qenc = "";
if (q != null) {
qenc = new String(request.getParameter("q").getBytes(),
"UTF-8");
} else {
q = "";
}
%>
<form method="get" action="/jsp/enctest/index.jsp"
accept-charset="UTF-8">
<input name="q" type="text" value="<%= q %>" />
<input type="submit" value="Go" />
</form>
<p>new String(request.getParameter("q").getBytes(), "UTF-8") : <%= qenc
%></p>
</body>
</html>
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