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相關資料：
《21天學通Java Web開發》
獲得所有的參數名稱
1.request對象的getParameterNames()方法可以獲得所有的參數名稱。
RequestForm2.jsp
1 <%@ page language="java" contentType="text/html;charset=gb2312" %> 2 <html> 3 <head> 4 <title>表單</title> 5 </head> 6 <body> 7 <form action="RequestDemo2.jsp" method="post"> 8 使用者名稱：<input type= "text" name="username"/><br> 9 使用者密碼：<input type= "password" name="userpassword"/>10 <input type="submit" value="提交">11 </form>12 </body>13 </html>View Code
RequestDemo2.jsp
1 <%@ page language="java" contentType="text/html;charset=gb2312" import="java.util.*" %> 2 <html> 3 <head> 4 <title>使用request對象獲得所有的參數名稱</title> 5 </head> 6 <body> 7 <%-- 通過request對象的getParameterNames --%> 8 <% 9 Enumeration<String> e = request.getParameterNames();//獲得所有的參數名稱10 while(e.hasMoreElements()){ //遍曆Enumeration11 String str = (String)e.nextElement(); //取出下一個元素值12 out.println(str);//列印輸出變數名稱13 }14 %>15 </body>16 </html>View Code
JAVA-JSP內建對象之request獲得所有的參數名稱
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