第七周上机练习

1.教材P78-79 例4-9

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
  
   <%  double price=98.78;
    %>
    <p style="font-family: 宋体;font-size: 36; color:blue">
    商品编号A10001,价格 8765
    <a href="ex02.jsp?id=A10001&price=8765">购买</a><br>
    商品编号A10002,价格<%=price %>
     <a href="ex02.jsp?id=A10002&price=<%=price %>">购买</a><br>
  </body>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
  
    <p style="font-family: 宋体;font-size: 36"; color:blue>
  	<% String id=request.getParameter("id");
  	String price=request.getParameter("price");
  	out.print("商品编号:"+id+"</br>"+"商品价格"+price);
  	 %>
  </body>
</html>

  

 

 

 

 

2.教材P97 实验2

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
  <form action="ex02.jsp">
  	<p style="font-family: 宋体;font-size: 18; color:blue">
  	输入运算数,选择运算符号:
  	<input type="text" name="one" size=6/> 
  	<select name="op">
  		<option value="+">加</option>
  		<option value="-">减</option>
  		<option value="*">乘</option>
  		<option value="/">除</option>
  	</select>
  	<input type="text" name="two" size=6/>
  	<br><input type="submit" value="提交"/> 
  </form>
 
    
  </body>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
  
    <p style="font-family: 宋体;font-size: 18; color:black">
  	<%
  	String one=request.getParameter("one");
  	String two=request.getParameter("two");
  	String op=request.getParameter("op");
  	
  	if(one==null||one.length()==0){
  		response.sendRedirect("ex01.jsp");
  		return;
  	}
  	else if(two==null||two.length()==0){
  		response.sendRedirect("ex01.jsp");
  		return;
  	}
  	
  		double a=Double.parseDouble(one);
  		double b=Double.parseDouble(two);
  		double r=0;
  		try{
  		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.print("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)

 

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <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="ex02.jsp" name ="logindo">
  	<p style="font-family: 宋体;font-size: 18; color:blue">
  	账号:
  	<input type="text" name="admin" size=6/> 
  	密码:
  	<input type="password" name="pass" size=6/>
  	
  
  	<br><input type="button" value="登录" onclick="login()"/> 
  </form>
 
 
  </body>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
  <%
  	String admin=request.getParameter("admin");
  	String pass=request.getParameter("pass");
  	if(admin.equals(pass)){
  		request.getRequestDispatcher("ok.jsp").forward(request, response);
  	}
  	else{
  		response.sendRedirect("no.jsp");
  	}
   %>
  </body>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

 登录失败!!!!!!!
  </body>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

 登录成功!!!!!!!
  </body>
</html>

  

 

 

 

 

 

 

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"%>

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <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="ex02.jsp" name ="logindo">
  	<p style="font-family: 宋体;font-size: 18; color:blue">
  	账号:
  	<input type="text" name="admin" size=6/> 
  	密码:
  	<input type="password" name="pass" size=6/>
  	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>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
  <%
  	String admin=request.getParameter("admin");
  	String pass=request.getParameter("pass");
  	
  	if(admin.equals(pass)){
  		request.getRequestDispatcher("ok.jsp").forward(request, response);
  		
  	}
  	else{
  		response.sendRedirect("no.jsp");
  	}
   
   %>
  
  
  </body>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

 <h1>登录失败!!!!!!!</h1>
  </body>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

 <h1>登录成功!!!!!!!</h1>
 <%
 	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>
</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"%>

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
    
  <form action="ex02.jsp" name ="logindo">
  	<p style="font-family: 宋体;font-size: 18; color:blue">
  	请输入数字
  	<input type="text" name="num" size=6/> 
  	<br><input type="submit" value="提交"/> 
  </form>
 
 
  </body>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
	  <%
	  	String num=request.getParameter("num");
	  	int n=Integer.parseInt(num);
	  	
	   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。(转发)request.getRequestDispacher.....forward

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <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="ex02.jsp" name ="logindo">
  	<p style="font-family: 宋体;font-size: 18; color:blue">
  	账号:
  	<input type="text" name="admin" size=6/> 
  	密码:
  	<input type="password" name="pass" size=6/>

  	<br><input type="button" value="登录" onclick="login()"/> 
  </form>
 
 
  </body>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
  <%
  	String admin=request.getParameter("admin");
  	String pass=request.getParameter("pass");
  	
  	if(admin.equals(pass)){
  		request.getRequestDispatcher("ok.jsp").forward(request, response);
  		
  	}
  	else{
  		response.sendRedirect("no.jsp");
  	}
   
   %>
  
  
  </body>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
  <%
 	 String admin=request.getParameter("admin");
  	String uname=request.getParameter("uname");
  	out.print("账号:"+admin+"</br>"+"用户名称"+uname);
  	
   
   %>
  
  
  </body>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

 登录失败!!!!!!!
  </body>
</html>

  

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

 <%
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
 登录成功!!!!!!!
 <%	String admin=request.getParameter("admin"); %>
		<form action="ex03.jsp">
			用户名:<input type="text" name="uname" />
		<input type="submit" value="提交"/>
		<input name="admin" type="hidden" value="<%= admin %>">
		</form>
  
  </body>
</html>

  

 

 

 

 

 

 

posted @ 2022-04-13 13:43  倪楠  阅读(60)  评论(0编辑  收藏  举报