用户对于jsp页面访问权限

最新推荐文章于 2021-02-26 11:07:24 发布

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最新推荐文章于 2021-02-26 11:07:24 发布

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分类专栏：学习总结 java

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本文介绍了如何通过session实现用户访问jsp页面的权限验证。详细讲述了利用servlet进行登录检查，以及login.jsp、servlet.java和welcome.jsp在验证流程中的作用。

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利用session保存用户信息，验证用户是否有权访问该页面。
验证：2个jsp，一个servlet
login.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="servlet1" method="post">
姓名：<input type="text" name="name" id="" value="" ><br />
手机：<input type="text" name="mobile" id="" value="" ><br />
<input type="submit" value="提交">
</form>
</body>
</html>

servlet.java

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class servlet1 extends HttpServlet {

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
	request.setCharacterEncoding("UTF-8");
	response.setCharacterEncoding("UTF-8");
	String name=request.getParameter("name");
	String mobile =request.getParameter("mobile");
	if("lisi".equals(name)&&"123".equals(mobile) ) {
		request.getSession().setAttribute("name", name);
		request.getRequestDispatcher("/welcome.jsp").forward(request, response);
		
	}else {
		request.getRequestDispatcher("/login.jsp").forward(request, response);
	}
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}

}

welcome.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
welcome！
！
<%
if (null==session.getAttribute("name")){
	out.write("无权访问");
}
else{
	out.write("欢迎"+session.getAttribute("name"));
}
%>
</body>
</html>