使用JSP实现简单的用户登录注册页面示例代码解析

实验要求:

将实验2中的系统用户登录和注册页面改为JSP页面,并部署自己的Web应用于Tomcat服务器中

具体要求:

完成登录JSP页面设计和注册页面设计

在登录页面表单中使用request对象获取用户信息,建立新的JSP页面完成登录验证(用户名和密码自己指定即可)。

验证结果显示(如登录成功/用户名密码错误,可以使用JavaScript,也可以使用新的JSP页面)。

在注册页面表单中使用request对象获取用户注册信息(注册项目由自己指定),在新的JSP页面显示用户注册信息,并提示注册成功。

代码

登录页面index.html

  <!DOCTYPE html>  <html lang="zh-CN">  <head>   <meta charset="utf-8">   <meta http-equiv="X-UA-Compatible" content="IE=edge">   <meta name="viewport" content="width=device-width, initial-scale=1">   <title>jsp作业</title>   <link href="css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet">  </head>  <body>  <nav class="navbar navbar-default">   <div class="container-fluid">    <div class="navbar-header">     <a class="navbar-brand" href="./" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >jsp作业</a>    </div>    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">     <ul class="nav navbar-nav navbar-right">      <li><a href="login.jsp" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >登录</a></li>     </ul>    </div>   </div>  </nav>  <div class="container">   <div class="jumbotron">    <h1>Hello, world!</h1>    <p>这是一个jsp作业</p>   </div>  </div>  </body>  </html>

登录页面login.jsp

  <%@ page contentType="text/html; charset=utf-8" language="java"%>  <html lang="zh-CN">  <head>   <meta charset="utf-8">   <meta http-equiv="X-UA-Compatible" content="IE=edge">   <meta name="viewport" content="width=device-width, initial-scale=1">   <title>登录</title>   <link href="css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet">  </head>  <body>  <nav class="navbar navbar-default">   <div class="container-fluid">    <div class="navbar-header">     <a class="navbar-brand" href="./" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >jsp作业</a>    </div>    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">     <ul class="nav navbar-nav navbar-right">      <li><a href="login.jsp" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >登录</a></li>     </ul>    </div>   </div>  </nav>  <div class="container">   <div class="row">    <div class="col-md-4">      </div>    <div class="col-md-4">     <form class="form-signin" method="post" action="login-check.jsp">      <h2 class="form-signin-heading">登录到jsp作业</h2>      <label for="">用户名</label>      <input type="text" name="username" id="username" class="form-control" placeholder="请输入用户名" required autofocus><br>      <label for="">密码</label>      <input type="password" name="password" id="password" class="form-control" placeholder="请输入密码" required>      <div class="checkbox">       <label>        <input type="checkbox" value="remember-me" checked="checked"> 记住密码       </label>      </div>      <button type="submit" class="btn btn-primary" id="btn-login">登录</button>      <a href="reg.jsp" rel="external nofollow" rel="external nofollow" class="btn btn-default">注册</a>     </form>    </div>    <div class="col-md-4">    </div>   </div>  </body>  </html>  

登录结果页面login-check.jsp

  <%@ page contentType="text/html; charset=utf-8" language="java"%>  <html lang="zh-CN">  <head>   <meta charset="utf-8">   <meta http-equiv="X-UA-Compatible" content="IE=edge">   <meta name="viewport" content="width=device-width, initial-scale=1">   <title>登录</title>   <link href="css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet">  </head>  <body>  <nav class="navbar navbar-default">   <div class="container-fluid">    <div class="navbar-header">     <a class="navbar-brand" href="./" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >jsp作业</a>    </div>    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">     <ul class="nav navbar-nav navbar-right">      <li><a href="login.jsp" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >登录</a></li>     </ul>    </div>   </div>  </nav>  <div class="container">   <div class="row">    <div class="col-md-4">      </div>    <div class="col-md-4">     <form class="form-signin" method="post" action="login-check.jsp">      <h2 class="form-signin-heading">登录到jsp作业</h2>      <label for="">用户名</label>      <input type="text" name="username" id="username" class="form-control" placeholder="请输入用户名" required autofocus><br>      <label for="">密码</label>      <input type="password" name="password" id="password" class="form-control" placeholder="请输入密码" required>      <div class="checkbox">       <label>        <input type="checkbox" value="remember-me" checked="checked"> 记住密码       </label>      </div>      <button type="submit" class="btn btn-primary" id="btn-login">登录</button>      <a href="reg.jsp" rel="external nofollow" rel="external nofollow" class="btn btn-default">注册</a>     </form>    </div>    <div class="col-md-4">    </div>   </div>  </body>  </html>  

注册页面reg.jsp

  <%@ page contentType="text/html; charset=utf-8" language="java"%>  <html lang="zh-CN">  <head>   <meta charset="utf-8">   <meta http-equiv="X-UA-Compatible" content="IE=edge">   <meta name="viewport" content="width=device-width, initial-scale=1">   <title>注册</title>   <link href="css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet">  </head>  <body>  <nav class="navbar navbar-default">   <div class="container-fluid">    <div class="navbar-header">     <a class="navbar-brand" href="./" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >jsp作业</a>    </div>    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">     <ul class="nav navbar-nav navbar-right">      <li><a href="login.jsp" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >登录</a></li>     </ul>    </div>   </div>  </nav>  <div class="container">   <div class="row">    <div class="col-md-4">    </div>    <div class="col-md-4">       <form class="form-signin" action="reg-submit.jsp" method="post">      <h2 class="form-signin-heading">注册到jsp作业</h2>      <div id="info">        </div>      <label for="">用户名</label>      <input type="text" name="username" id="username" class="form-control" placeholder="请输入用户名" required autofocus><br>      <label for="">密码</label>      <input type="password" name="password" id="password" class="form-control" placeholder="请输入密码" required><br>      <label for="">重复密码</label>      <input type="password" name="password2" id="password2" class="form-control" placeholder="请再次输入密码" required maxLength="16"><br>      <button type="submit" class="btn btn-primary" id="btn-reg">注册</button>      <a href="login.jsp" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="btn btn-default" id="btn-reg">返回登录</a>     </form>    </div>    <div class="col-md-4">    </div>   </div>  </body>  </html>  

注册结果页面reg-submit.jsp

  <%@ page contentType="text/html; charset=utf-8" language="java"%>  <html lang="zh-CN">  <head>   <meta charset="utf-8">   <meta http-equiv="X-UA-Compatible" content="IE=edge">   <meta name="viewport" content="width=device-width, initial-scale=1">   <title>结果</title>   <link href="css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet">  </head>  <body>  <nav class="navbar navbar-default">   <div class="container-fluid">    <div class="navbar-header">     <a class="navbar-brand" href="./" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >jsp作业</a>    </div>    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">     <ul class="nav navbar-nav navbar-right">      <li><a href="login.jsp" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >登录</a></li>     </ul>    </div>   </div>  </nav>  <div class="container">   <% String username = request.getParameter("username");   String password = request.getParameter("password");    String password2 = request.getParameter("password2");    %>   <%   if(password.equals(password2)){    out.println("<div class='alert alert-success' role='alert'>注册成功</div>");    out.println("<ul class='list-group'>");    out.println("<li class='list-group-item'>用户名:" + username + "</li>");    out.println("<li class='list-group-item'>密码:" + password + "</li>");    out.println("</ul>");   }   else{    out.println("<div class='alert alert-danger' role='alert'>两次密码输入不一致,请重新输入</div>");   }   %>   <!-- <%=username %>   <%=password %>   <%=password2 %> -->  </div>  

效果





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使用JSP实现简单的用户登录注册页面示例代码解析

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