JSP第五次作业

1.教材P78-79 例4-9

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

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
     <%
    double price = 98.78;
     %>
  </head>
  
  <body bgcolor = #ffccff>
   
     <p style = "font-family:宋体;font-size:36;color:blue">
     商品编号 A1001,价格 8765
     <a href = "index2.jsp?id=A1001&price=8765">购买</a><br>
     商品编号 A1002,价格 <%= price %>
     <a href = "index2.jsp?id=A1002&price=<%= price%>">购买</a>
     </p>
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
     <%
    double price = 98.78;
     %>
  </head>
  
  <body bgcolor = #ffccff>
   
     <p style = "font-family:宋体;font-size:36;color:blue">
     商品编号 A1001,价格 8765
     <a href = "index2.jsp?id=A1001&price=8765">购买</a><br>
     商品编号 A1002,价格 <%= price %>
     <a href = "index2.jsp?id=A1002&price=<%= price%>">购买</a>
     </p>
  </body>
</html>

 

 

 

2.教材P97 实验2

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
  </head>
  <body>
    <form action="index2.jsp" method=post name=form>
    输入运算数,选择运算符:<br>
    <input type=text name="numberOne" size=6 />
    <select name="op">
     <option selected="selected" value="+"><option value="-"><option value="*"><option value="/"></select>
    <input type=text name="numberTwo" size=6/><br>
    <input type="submit" name="submit" value="提交"/>
    
    </form>
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
  </head>
  <body>
   <%
    request.setCharacterEncoding("utf-8");
   String numberOne=request.getParameter("numberOne");
   String numberTwo=request.getParameter("numberTwo");
   String op=request.getParameter("op");
   if(numberOne==null||numberOne.length()==0){
        response.sendRedirect("index.jsp");
        return;
   }
   else if(numberTwo==null||numberTwo.length()==0){
        response.sendRedirect("index.jsp");
        return;
   }
   try{
     double a=Double.parseDouble(numberOne);
     double b=Double.parseDouble(numberTwo);
     double r=0;
     if(op.equals("+"))
     r=a+b;  
     else if(op.equals("-"))
     r=a-b;
     else if(op.equals("*"))
     r=a*b;
     else if(op.equals("/"))
     r=a/b;
     out.print(a+" "+op+" "+b+"="+r);
   }
   catch(Exception e){
      out.println("请输入数字字符");
   }
    %>
  </body>
</html>

 

 

 

 

3.制作一个登陆表单,输入账号和密码,如果账号密码相同,跳转到“登录成功”页面,否则跳转到“登录失败”页面。(加上JS非空验证)(选做,加验证码)

4.在上题的表单中增加一个checkbox,让用户选择“是否注册为会员",如果注册为会员,则在显示时增加文本“欢迎您注册为会员”。

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

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   
    <title>My JSP 'index.jsp' starting page</title>
    
  </head>
  
  <body>
  <script type="text/javascript">
  function lg() {
            if (form.user.value == "") {
                alert("账号不能为空!");
                return;
            }
            if (form.password.value == "") {
                alert("密码不能为空!");
                return;
            }
            if (form.validationCode.value == "") {
                alert("验证码不能为空,请输入验证码");
                form.validationCode.focus();
                return;
            }
            if (form.validationCode.value != form.validationCode1.value) {
                alert("请输入正确的验证码");
                form.validationCode.focus();
                return;
            }

            form.submit();
        }
    </script>
    <%
        int intmethod1 = (int) ((((Math.random()) * 5)) + 1);
        int intmethod2 = (int) ((((Math.random()) * 5)) + 1);
        int intmethod3 = (int) ((((Math.random()) * 5)) + 1);
        int intmethod4 = (int) ((((Math.random()) * 5)) + 1);
        String intsum = intmethod1 + "" + intmethod2 + intmethod3
                + intmethod4;
    %>
    <form action="in.jsp" method="post" name="form">
        用户名:<input type="text" name="user" /> <br>
        密码:<input type="password" name="password" /><br>
         验证码:<input type="text" name="validationCode"
                    onKeyDown="if(event.keyCode==13){form.submit.focus();}" size="6">
                    <input type="button" name="validationCode1" size="1"
                    value="<%=intsum%>"><br>
                是否注册会员:<input type="radio" name="fyx" value="是" /><input type="radio" name="fyx" value="否" /><br>           
            <input type="submit" value="登录" onclick="yz()" />
<br>   
</form>
   
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   
    <title>My JSP 'in.jsp' starting page</title>
  
  </head>
  
  <body>
  <%
      request.setCharacterEncoding("utf-8");
      
        String user = request.getParameter("user") == null ? "" : request.getParameter("user");
        String password = request.getParameter("password") == null ? "": request.getParameter("password");
        
        if (user.equals(password)) {
            request.getRequestDispatcher("no.jsp").forward(request, response);
        } else {
            request.getRequestDispatcher("ok.jsp").forward(request, response);
        }
    %>
  
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   
    <title>My JSP 'ok.jsp' starting page</title>
    
  </head>
  
  <body>
   <h1>登陆成功</h1>
      <%
    request.setCharacterEncoding("utf-8");
        String fyx=request.getParameter("fyx");
        if(fyx.equals("")){
            out.print("欢迎您注册为会员");
        }
    
        %>
  
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
    <title>My JSP 'no.jsp' starting page</title>

  </head>
  
  <body>
    <h1>登陆失败</h1>
      <% request.setCharacterEncoding("utf-8");%>
   
  </body>
</html>

 

 

 

 

 

 

5.在页面1的表单内输人一个数字N,提交,能够在另一个页面打印N个“欢迎”字符串。

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

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
    <title>My JSP 'index.jsp' starting page</title>

  </head>
  
  <body>
    <form action="index2.jsp" method="post" name="form">
      输入任意整数N:<input type="text" name="name" >
      <input type="submit" value="提交">
      
      </form>
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   
    <title>My JSP 'index2.jsp' starting page</title>
    
  </head>
  
  <body>
    <%
   request.setCharacterEncoding("UTF-8");
     String name=request.getParameter("name");
        int n=Integer.parseInt(name);
    for(int i=0;i<n;i++){
        out.print("欢迎"+"<br>");
  }
   %>
  </body>
</html>

 

 

 

 

 

6.在页面1中输入账号和密码,进行登录,如果账号和密码相同,则认为成功登录到页面2,在页面2中显示一个文本框输人用户姓名,输人之后提交,在页面3中显示用户的账号和姓名。

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

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   
    <title>My JSP 'index.jsp' starting page</title>
   
  </head>
  
  <body>
  <script>

        function lg() {
               if (form.user.value == "") {
                alert("用户名不能为空!");
                form.user.focus();
                return;
            }
            if (form.password.value == "") {
                alert("密码不能为空!");
                form.password.focus();
                return;
            }
        }
    </script>
    <form action="index2.jsp" method="post" name="form">
    账号:<input type="text" name="user"/><br>
    密码:<input type="password" name="password"/><br>
    <input type="submit" value="登录"/>
    </form>
    </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
    <title>My JSP 'index2.jsp' starting page</title>

  </head>
  
  <body>
  <%
    request.setCharacterEncoding("UTF-8");
    String user=request.getParameter("user");
    String password=request.getParameter("password");
     
    if(user.equals(password)){
        request.getRequestDispatcher("no.jsp").forward(request, response);
         
    }
    else{
        request.getRequestDispatcher("ok.jsp").forward(request, response);
    }
    
   %>
    
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
    <title>My JSP 'ok.jsp' starting page</title>
   
  </head>
  
  <body>
   <%
request.setCharacterEncoding("UTF-8");  
String user=request.getParameter("user");
 %>

    <h1> 登陆成功!</h1>
    <form action="index3.jsp" method="post" name="form">
        用户姓名:<input type="text" name="username"/><br>
        <input type="submit" value="提交"/><br>
        <input type="hidden" name="user" value="<%= user %>"/>
     </form>
  
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   
    <title>My JSP 'no.jsp' starting page</title>
   
  </head>
  
  <body>
  <%
    request.setCharacterEncoding("UTF-8");
   
    %>
      <h1> 登陆失败!</h1>
   
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   
    <title>My JSP 'index3.jsp' starting page</title>
    
  </head>
  
  <body>
   <%
     request.setCharacterEncoding("UTF-8");
     String user=request.getParameter("user");
     String username=request.getParameter("username");
     out.print("账号:"+user+"</br>"+"用户姓名:"+"&nbsp&nbsp&nbsp"+username);
     
   %>
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   
    <title>My JSP 'index3.jsp' starting page</title>
    
  </head>
  
  <body>
   <%
     request.setCharacterEncoding("UTF-8");
     String user=request.getParameter("user");
     String username=request.getParameter("username");
     out.print("账号:"+user+"</br>"+"用户姓名:"+"&nbsp&nbsp&nbsp"+username);
     
   %>
  </body>
</html>

 

 

 

 

 

 

 

posted @ 2022-04-16 20:35  Song、  阅读(5)  评论(0编辑  收藏  举报