I want to use charset="GB2312" in JSTL,and input information with GB2312 code in index.jsp page and then I post it to show_parameters.jsp page,I find the charset is not show properly. It shows some '?'.
Why? My code is follows:
*********index.jsp**************
<html>
<head>
<title>Request Decoding by Hand</title>
</head>
<body>
<%@(protected)'%>
<%@(protected)' %>
<%@(protected)' %>
<fmt:setLocale value='zh'/>
<fmt:setBundle basename='app'/>
<fmt:message key='login.form.title'/><hr>
<form action='show_parameters.jsp'>
<table>
<tr>
<td><fmt:message key='login.textfield.name'/></td>
<td><input type='text' name='name' value='<fmt:message key="login.textfield.nameValue"/>'/> </td>
</tr></table> <br>
<input type='submit' value='<fmt:message key="login.button.submit"/>'/>
</form>
<c:set var='requestCharset' value='GB2312' scope='session'/> Response Charset: <c:out value='${pageContext.response.characterEncoding}'/>
</body>
</html>
********show_parameters.jsp***********
<html>
<head>
<title>Request Decoding by Hand</title>
</head>
<body>
<%@(protected)'%>
<%@(protected)' %>
<%@(protected)' %>
<% String charset = (String)pageContext.getAttribute("requestCharset",PageContext.SESSION_SCOPE); request.setCharacterEncoding(charset); %> Request Charset: <c:out value='${pageContext.request.characterEncoding}'/>
Name: <c:out value='${param.name}'/> Request Charset: <c:out value='${pageContext.request.characterEncoding}'/>
</body>
</html>
********app_zh.properties***********
login.page.title=\u8bf7\u767b\u5f55
login.form.title=\u8bf7\u767b\u5f55
login.textfield.name=\u7528\u6237\u540d
login.textfield.nameValue=\u7528\u6237\u540d\u767b\u5f55
login.textfield.pwd=\u5bc6\u7801
login.button.submit=\u767b\u5f55
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