weiyong
/
2001010304G01


			
				
					
						
						
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							<%--
  Created by IntelliJ IDEA.
  User: x'b'w
  Date: 2021/5/22
  Time: 11:58
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <div>
        <h1>案例1：</h1>
        请求的URL为：${pageContext.request.requestURL}<br>
        Context-Type响应头：${pageContext.response.contentType}<br>
        服务器信息为：${pageContext.servletContext.serverInfo}<br>
        Servlet注册名为：${pageContext.servletContext.servletNames}<br>
    </div>

    <div>
        <h1>案例2：</h1>
        <%
            pageContext.setAttribute("userName","James");
        %>
        <%
            request.setAttribute("bookName","Java Web");
        %>
        <%
            session.setAttribute("userName","Davis");
        %>
        <%
            application.setAttribute("bookName","Java");
        %>
        表达式：\${pageScope.userName}的值为：${pageScope.userName}<br>
        表达式：\${requestScope.bookName}的值为：${requestScope.bookName}<br>
        表达式：\${sessionScope.userName}的值为：${sessionScope.userName}<br>
        表达式：\${applicationScope.bookName}的值为：${applicationScope.bookName}<br>
        <hr>
        表达式\${userName}的值为：${userName}
    </div>

    <div>
        <h1>案例3：</h1>
        <form>
            num1:<input type="text" name="num1"><br />
            num2:<input type="text" name="num"><br />
            num3:<input type="text" name="num"><br>
            <input type="submit" value="提交">&nbsp;&nbsp;
            <input type="reset" value="重置">
            <hr >
            num1: ${param.num1}<br>
            num2: ${paramValues.num[0]}<br />
            num3: ${paramValues.num[1]}<br />
        </form>
    </div>

    <div>
        <h1>案例4：</h1>
        Cookie对象信息：<br>
        ${cookie.userName}<br>
        Cookie对象的名称和值：<br>
        ${cookie.userName.name}=${cookie.userName.value}
        <%
            response.addCookie(new Cookie("userName","James"));
        %>
    </div>

    <div>
        <h1>案例5：</h1>
        用户名：<%
        request.getAttribute("username");
        %><br>
        密码：<%
        request.getAttribute("password");
        %>
        <hr>
        EL表达式：
        用户名：${username}<br>
        密码：${password}<br>
    </div>
</body>
</html>