提交表单后转到JSP文件后不能正常显示

文件1:creditCardForm.htm <html> 
<head> 
<meta http-equiv="Content-Language" content="zh-cn"> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> 
<title>新信用卡信息</title> 
</head> <body> 
<FORM action="creditCardForm.jsp" method="post"> 
<p>信用卡信息</p> 
<p>姓名：<input type="text" name="name" size="20"></p> 
<p>信用卡号码：<input type="text" name="number" size="20"></p> 
<p>信用卡类型：<select size="1" name="type"> 
<option>Visa</option> 
<option>Master Card</option> 
</select></p> 
<p>出生年月：<select size="1" name="month"> 
<option>1</option> 
<option>2</option> 
<option>3</option> 
</select> <select size="1" name="year"> 
<option>1980</option> 
<option>1981</option> 
<option>1982</option> 
</select></p> 
<p> </p> 
<p><input type="submit" value="提交" name="Submit"> <input type="reset" value="重置" name="Reset"> 
</body> </html> 文件2：creditCardForm.jsp <html> <head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> 
<title>信用卡处理JSP</title> 
</head> <body> 
信用卡处理 
<UL> 
<L1>姓名 = <%=request.getParameter("name")%> 
<L1>号码 = <%=request.getParameter("number")%> 
<L1>类型 = <%=request.getParameter("type")%> 
<L1>出生年月 = <%=request.getParameter("month")%>/ 
<%=request.getParameter("year")%> 
</UL> 
</body> 
</html> 为什么点击“提交”后会显示如下 <html> <head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> 
<title>信用卡处理JSP</title> 
</head> <body> 
信用卡处理 
<UL> 
<L1>姓名 = <%=request.getParameter("name")%> 
<L1>号码 = <%=request.getParameter("number")%> 
<L1>类型 = <%=request.getParameter("type")%> 
<L1>出生年月 = <%=request.getParameter("month")%>/ 
<%=request.getParameter("year")%> 
</UL> 
</body> 
</html>