这个压缩包里的都是超级经典的java例子

				
				
				
				Getting a Request Parameter Using JSTL in a JSP Page (Java Developers Almanac Example)
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				The Java Developers Almanac 1.4
				
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				    javax.servlet.jsp.jstl.core
				         [6 examples]
				    
				
				  e1066. Getting a Request Parameter Using JSTL in a JSP Page
				
				When using the JSTL's expression language (see
				e1065 Enabling the JSTL Expression Language in a JSP Page), the request parameters
				are made available in the implicit object param.  This example
				demonstrates how to include the value of a request parameter from the
				query string or posted data in the generated output:
				
				
				    <%-- Declare the core library --%>
				    <%@ taglib uri="/WEB-INF/tld/c.tld" prefix="c" %>
				    
				    <c:choose>
				        <c:when test="${empty param.name}">
				            Please enter your name.
				        </c:when>
				        <c:otherwise>
				            Hello <b><c:out value="${param.name}" /></b>!
				        </c:otherwise>
				    </c:choose>
				
				If the page was accessed with the URL:
				
				    http://hostname.com/mywebapp/mypage.jsp?name=John+Smith
				
				the resulting output would be:
				
				    Hello <b>John Smith</b>!
				
				
				
				
				             Related Examples
				
				
				
				
				e1064. 
				    Using the Java Standard Tag Library (JSTL) in a JSP Page
				
				
				
				e1065. 
				    Enabling the JSTL Expression Language in a JSP Page
				
				
				
				e1067. 
				    Saving Data Using JSTL in a JSP Page
				
				
				
				e1068. 
				    Saving and Emitting HTML Fragments Using JSTL in a JSP Page
				
				
				
				e1069. 
				    Conditionally Generating Output Using JSTL in a JSP Page
				
				
				
				
				
				
				
				
				© 2002 Addison-Wesley.