每日日报8月21日

1.今天学习了编写添加界面 addUser.jsp.

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<html>

  <head>

    <title>login.jsp页面</title>

  </head>

  <body>

    <form action="loginCL.jsp" method="post" name=form >

     <font size="5">登录界面</font><br>

     用户名:<input type="text" value=""name="username"><br>

     密    码:<input type="text"value="" name="password"><br>

     <input type="submit"value="提交"name="submit">

     <input type="reset"value="重置">   

    </form>

<%=(String)request.getAttribute("usertxt") %>

  </body>

</html>

3.loginCL.jsp文件代码

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<html>

  <head>

    <title>loginCL.jsp页面</title>

  </head>

  <body>

<%

String referer = request.getHeader("Referer");

if(referer==null||referer.trim().length()==0||

!referer.equals("http://localhost:8081/two/login.jsp")){

response.sendRedirect("login.jsp");

return;

}

request.setCharacterEncoding("utf-8");

response.setContentType("text/html;charset=utf-8");

String name=request.getParameter("username");

String password=request.getParameter("password");

//判断登陆界面的用户名和密码,根据输入的不同情况进行不同的处理

if(name.trim().equals("admin")&&password.trim().equals("1234"))

{

request.setAttribute("usertxt", "正常登录!!!");

request.getRequestDispatcher("success.jsp").forward(request, response);

}

else{

request.setAttribute("usertxt", "用户名或密码错误!!!");

request.getRequestDispatcher("login.jsp").forward(request, response);

}

%>

  </body>

</html>

4.success.jsp文件代码

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<html>

  <head>

    <title>success.jsp页面</title>

  </head>

  <body>

<%

String referer = request.getHeader("Referer");

if(referer==null||referer.trim().length()==0||

!referer.equals("http://localhost:8081/two/login.jsp")){

response.sendRedirect("login.jsp");

return;

}

request.setCharacterEncoding("utf-8");

response.setContentType("text/html;charset=utf-8");

%>  

<%=(String)request.getAttribute("usertxt") %>

  </body>

</html>

2.没有遇到问题

3.明天打算学习

编写添加用户的 Servlet
原文地址:https://www.cnblogs.com/wanghaoning/p/13591725.html