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| 24. 16. 2. 使用JSTL检查所选表单选项 |
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<html>
<head><title>Select Your Portal</title></head>
<body>
<h1>Select your preferred portal:</h1>
<form action="showportal.jsp" method="get">
<select name="portchoice">
<option>news</option>
<option>weather</option>
<option>entertainment</option>
</select>
<input type="submit" value="Select"/>
</form>
</body>
</html>
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<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<html>
<c:choose>
<c:when test="${param.portchoice == 'news'}">
<head><title>News Portal</title></head>
<body>
<h1>Welcome to the News Portal!</h1>
</body>
</c:when>
<c:when test="${param.portchoice == 'weather'}">
<head><title>Weather Portal</title></head>
<body>
<h1>You Get the Latest Weather!</h1>
</body>
</c:when>
<c:when test="${param.portchoice == 'entertainment'}">
<head><title>Entertainment Portal</title></head>
<body>
<h1>Entertainment News Just for You!</h1>
</body>
</c:when>
<c:otherwise>
<head><title>System Portal</title></head>
<body>
<h1>Application logic problem detected!</h1>
</body>
</c:otherwise>
</c:choose>
</html>
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 Download: JSTLCheckSelectedValueFromFormSelectOption.zip( 1,561 k) |
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