案例：对比使用Java代码与EL表达式获取信息

一、创建MyServletpublic class MyServlet extends HttpServlet {public void doGet(HttpServletRequest request,HttpServletResponseresponse) throws ServletException, IOException {request.setAttribute("username"

axinawang

284人浏览 · 2021-10-27 12:31:55

axinawang · 2021-10-27 12:31:55 发布

一、创建MyServlet

public class MyServlet extends HttpServlet {
	public void doGet(HttpServletRequest request, 
      HttpServletResponse  response) throws ServletException, IOException {
		request.setAttribute("username", "itcast");
		request.setAttribute("password", "123");
         RequestDispatcher dispatcher = request
				.getRequestDispatcher("/myjsp.jsp");
		dispatcher.forward(request, response);
	}
	public void doPost(HttpServletRequest request,
      HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}
}

二、创建myjsp.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
	pageEncoding="utf-8"%>
<html>
<head></head>
<body>
    
	用户名：<%=request.getAttribute("username")%><br /> 
	密 码：<%=request.getAttribute("password")%><br />	
	<hr>
	使用EL表达式:<br />
	用户名：${username}<br />
 	密 码：${password}<br />
	
</body>
</html>