1.教材P78-79 例4-9

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
    <%
        double price = 98.78;
    %>
    <p style="font-family: 宋体;font-style: 36;color: blue">
        商品编号A1001,价格8765 <a href="index1.jsp?id=A1001&price=8765">购买</a>
        商品编号A1002,价格<%=price%>
        <a href="index1.jsp?id=A1002&price=<%=price%>">购买</a>
    </p>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
    <p style="font-family: 宋体;font-style: 36;color: blue">
        <%
            String id = request.getParameter("id");
            String price = request.getParameter("price");
        %>
        <strong>商品编号:<%=id%><br> 商品价格:<%=price%> </strong>
    </p>

</body>
</html>

 

 

 

 2.教材P97 实验2

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body bgcolor="#ffccff">
    <form action="index1.jsp" method="post" name="form">
        <p style="font-family: 宋体;font-size: 18; color: blue">
            输入运算数,选择运算符:<br> <input type="text" name="num1" size=6 /> <select
                name="oper">
                <option selected="selected" value="+"><option value="-"><option value="*"><option value="/"></select>
            <input type="text" name="num2" size=6 />
             <input type="submit"  value="提交">
                </p>
    </form>



</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body bgcolor="cyan">
    <p style="font-family: 宋体; font-size: 18;color: black;">
        <%
            String num1 = request.getParameter("num1");
            String num2 = request.getParameter("num2");
            String oper = request.getParameter("oper");
            if (num1 == null || num1.length() == 0) {
                response.sendRedirect("index.jsp");
                return;
            } else if (num2 == null || num2.length() == 0) {
                response.sendRedirect("index.jsp");
                return;
            }
            try {
                double a = Double.parseDouble(num1);
                double b = Double.parseDouble(num2);
                double x = 0;
                if (oper.equals("+")) {
                    x = a + b;
                } else if (oper.equals("-")) {
                    x = a - b;
                } else if (oper.equals("*")) {
                    x = a * b;
                } else if (oper.equals("/")) {
                    x = a / b;
                }
                out.print(a+""+oper+""+b+"="+x);
            } catch (Exception e) {
                out.print("请输入数字字符");
            }
        %>


    </p>


</body>
</html>

 

 

 

 

3题和4题、

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)

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 >
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
    <script>

        function yz() {
            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="index3.jsp" method="post" name="form">
        <table>
            <tr>
                <td>用户名:<input type="text" name="user" />
                </td>
            </tr>
            <tr>
                <td>密码:<input type="password" name="password" />
                </td>
            </tr>
            <tr>
                <td>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%>"></td>
            </tr>
            
            <tr>
                <td>是否注册会员:<input type="radio" name="hy" value="是" /><input type="radio" name="hy" value="否" /></td>
            </tr>
            <tr>
                <td><input type="button" value="登录" onclick="yz()" />
                </td>
            </tr>
        </table>
    </form>
</body>
</html>
复制代码
复制代码
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
    <h1>登录成功</h1>
    <%
    request.setCharacterEncoding("utf-8");
        String hy=request.getParameter("hy");
        if(hy.equals("")){
            out.print("欢迎您注册为会员");
        }
    
        
        
        
         
    %>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
  <head>
    <title>My JSP 'index.jsp' starting page</title>
  </head>
  <body>
      <% request.setCharacterEncoding("utf-8");%>
  <h1> 登录失败</h1>
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
  <head>
    <title>My JSP 'index.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("index1.jsp").forward(request, response);
        } else {
            request.getRequestDispatcher("index2.jsp").forward(request, response);
        }
    %>
  
  
  </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 >
<html>
  <head>
    <title>My JSP 'index.jsp' starting page</title>
  </head>
  <body>
  <form action="index1.jsp" method="post">
  <input  type="text" name="num"  />
  <input type="submit" value="提交" />
  </form>
  
  
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
  <head>
    <title>My JSP 'index.jsp' starting page</title>
  </head>
  <body>
  <%
  String string=request.getParameter("num");
  int i=string==null? -1:Integer.parseInt(string);
  for(int j=0;j<i;j++){
  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。(转发)request.getRequestDispacher.....forward

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
    <script>
        function yz() {
            if (form.zh.value == "") {
                alert("用户名不能为空!");
                form.zh.focus();
                return;
            }
            if (form.password.value == "") {
                alert('密码不能为空!');
                form.password.focus();
                return;
            }
            if(form.zh.value==form.password.value){
            form.submit();
            }else{
            alert('登陆失败');
            form.password.focus();
            return;
            }
        }
    </script>

    <form action="index1.jsp" method="post" name="form">
        <table>
            <tr>
                <td>账号</td>
                <td><input type="text" name="zh" />
                </td>
            </tr>
            <tr>
                <td>密码</td>
                <td><input type="password" name="password" />
                </td>
            </tr>
            <tr>
                <td><input type="button" value="登录" onclick="yz()" />
                </td>
            </tr>
        </table>
    </form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<%
String zh=request.getParameter("zh");
 %>

    <form action="index2.jsp" method="post">
        <input type="text" name="name" /> 
        <input type="submit" value="提交" />
        <input type="hidden" name="zh" value="<%=zh %>"/>
    </form>
    
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
  <head>
    <title>My JSP 'index.jsp' starting page</title>
  </head>
  <body>
  <%
  request.setCharacterEncoding("utf-8");
  String zh=request.getParameter("zh");
  String name=request.getParameter("name");
  out.print("用户姓名:"+name+"<br>"+"用户账号:"+zh);
  %>
  
  
  </body>
</html>

 

 

 

posted on 2022-04-16 15:59  计算机1901金百乙  阅读(7)  评论(0编辑  收藏  举报