1.教材P78-79 例4-9

 <body bgcolor=pick>
    <%
    double price=98.78;
     %>
     <p style="font-family:宋体;font-size:36;color:blue">
     商品编号A1001，价格8765
     <a href="MyJsp1.jsp?id=A1001&price=8765">购买</a><br>
     商品编号A1002,价格<%=price %>
     <a href="MyJsp1.jsp?id=A1002&price=<%=price%>">购买</a>
     </p>
  </body>
  <body bgcolor=pick>
  <p style="font-famliy:宋体;font-size;color:blue">
    <%String id=request.getParameter("id");
    String price=request.getParameter("price");
     %>
     <b>商品编号:<%=id %><br>
     商品价格:<%=price %>
     </p>
</body>

 

2.教材P97 实验2

 <body bgcolor="green">
    <form action="MyJsp1.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="+">加
                <option value="-">减
                <option value="*">乘
                <option value="/">除
            </select>
            <input type="text" name="num2" size=6 />
             <input type="submit"  value="提交">
                </p>
    </form>
</body>
 <body bgcolor="green">
    <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>

 

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）

 <body>
     <script type="text/javascript">
        function login(){
            if(logindo.admin.value==""){
                alert("请输入账号");
                return;
            }
            else if(logindo.pass.value==""){
                alert("请输入密码");
                return;
            }
            logindo.submit();
        }
    </script>
  <form action="MyJsp1.jsp" name ="logindo">
    <p style="font-family: 宋体;font-size: 18; color:black">
    请输入账号：
    <input type="text" name="admin" size=10/>
    <br>
    请输入密码：
    <input type="password" name="pass" size=10/>
   
    <br><input type="button" value="登录" onclick="login()"/>
  </form>
  </body>
<body>
  <%
    String admin=request.getParameter("admin");
    String pass=request.getParameter("pass");
    if(admin.equals(pass)){
        request.getRequestDispatcher("MyJsp2.jsp").forward(request, response);
    }
    else{
        response.sendRedirect("MyJsp3.jsp");
    }
   %>
  </body>
 <body>
    登录成功!
  </body>
 <body>
  登录失败!
  </body>

 

 

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”。

 <body>
     <script type="text/javascript">
        function login(){
            if(logindo.admin.value==""){
                alert("请输入账号");
                return;
            }
            else if(logindo.pass.value==""){
                alert("请输入密码");
                return;
            }
            logindo.submit();
        }
    </script>
  <form action="MyJsp1.jsp" name ="logindo">
    <p style="font-family: 宋体;font-size: 18; color:black">
    请输入账号：
    <input type="text" name="admin" size=10/>
    <br>
    请输入密码：
    <input type="password" name="pass" size=10/>
    <br>
   是否注册会员：
    <input type="checkbox" name="yes" value="注册"/>注册
    <input type="checkbox" name="yes" value="不注册"/>不注册
    <br><input type="button" value="登录" onclick="login()"/>
  </form>
  </body>
<body>
  <%
    String admin=request.getParameter("admin");
    String pass=request.getParameter("pass");
    if(admin.equals(pass)){
        request.getRequestDispatcher("MyJsp2.jsp").forward(request, response);
    }
    else{
        response.sendRedirect("MyJsp3.jsp");
    }
   %>
  </body>
 <body>
    登录成功!
     <%
    String []yes=request.getParameterValues("yes");
    for(int i=0;i<yes.length;i++){
            if(yes[i].equals("注册")){
            out.print("注册为会员");
            }
             
        } %>
  </body>
 <body>
  登录失败!
  </body>

 

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。

 <body>
  <form action="MyJsp1.jsp" method="post">
  <input  type="text" name="num"  />
  <br>
  <input type="submit" value="提交" />
  </form>    
  </body>
 <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>

 

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

 <body>
     <script type="text/javascript">
        function login(){
            if(logindo.admin.value==""){
                alert("请输入账号");
                return;
            }
            else if(logindo.pass.value==""){
                alert("请输入密码");
                return;
            }
            logindo.submit();
        }
    </script>
  <form action="MyJsp1.jsp" name ="logindo">
    <p style="font-family: 宋体;font-size: 18; color:black">
    账号:
    <input type="text" name="admin" size=8/>
    <br>
    密码:
    <input type="password" name="pass" size=8/>
 
    <br><input type="button" value="登录" onclick="login()"/>
  </form> 
  </body>
 <body>
  <%
    String admin=request.getParameter("admin");
    String pass=request.getParameter("pass");
     
    if(admin.equals(pass)){
        request.getRequestDispatcher("MyJsp3.jsp").forward(request, response);
         
    }
    else{
        response.sendRedirect("MyJsp4.jsp");
    }
    
   %>
   
   
  </body>
<body>
  <%
     String admin=request.getParameter("admin");
    String uname=request.getParameter("uname");
    out.print("账号："+admin+"</br>"+"用户名称"+uname);  
   %>
  </body>
 <body>
    登录成功
 <%  String admin=request.getParameter("admin"); %>
        <form action="MyJsp2.jsp">
            用户名：<input type="text" name="uname" />
        <input type="submit" value="提交"/>
        <input name="admin" type="hidden" value="<%= admin %>">
        </form>
   
  </body>
 <body> 
  登录失败
   </body>