本文介绍了JSP单选按钮值的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想知道如何得到单选按钮值。因此,假设,我有了两个单选按钮的形式。我想获得与键关联的值。不过,我得到空当我尝试。
I was wondering how to get radio button values. So suppose, I have a form that has two radio buttons. I would like to get the value associated with the button. However, I get null when I try to.
表格部分
<form method="post" action="insert.jsp" enctype=text/plain>
<table>
<INPUT TYPE="radio" name="command" value="0">Run<INPUT TYPE="radio" NAME="command" VALUE="1">Walk<BR>
Insert.jsp部分
Insert.jsp portion
String sCommand=(String)request.getParameter("command");
out.println(sCommand);
所以反过来,它打印出空
So in turn, it prints out null
推荐答案
使用 GET
方法,而不是 POST
和您code将运行。 (如果你想用'text / plain的'),也看到@divyabharathi正确的是enctype
给予POST方法的答案。
Use GET
method instead of POST
and your code will run. (if you want to use 'text/plain') and also see the answer given by @divyabharathi for the correct enctype
for POST method.
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form method="get" action="insert.jsp" enctype=text/plain>
<INPUT TYPE="radio" name="command" value="0"/>Run
<INPUT TYPE="radio" NAME="command" VALUE="1"/>Walk
<INPUT TYPE="submit" VALUE="submit" />
</form>
<%
String sCommand = request.getParameter("command");
out.println(sCommand);
%>
</body>
</html>
但我强烈建议你不要在你的JSP中使用 scriplets
,看一看的
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