利用GO整合百度AI人臉識別演算法的開發實踐
<%@ page contentType="text/html"%> <%@ page pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body bgcolor=#ffccff> <% double price=98.78; %> <p style="font-family: 宋體;font-size: 36;color: blue"> 商品編號 A1001,價格8765 <a href="receive.jsp?id=A1001&price=8765">購買</a><br> 商品編號 A1002,價格<%=price %> <a href="receive.jsp?id=A1002&price=<%=price%>">購買</a> </p> </body> </html>
<%@ page contentType="text/html"%> <%@ page pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body bgcolor=#EEEEFF> <p style="font-family: 宋體;font-size: 36;color: blue"> <% String id=request.getParameter("id"); String price=request.getParameter("price"); %> <b>商品編號:<%=id %><br> 商品價格:<%=price %> </b> </p> </body> </html>
2.教材P97 實驗2
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ pagecontentType="text/html" %> <% 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> <base href="<%=basePath%>"> <title>My JSP 'input.jsp' starting page</title> </head> <body bgcolor=#ffccff> <form action="computer.jsp" method=post name=form> <p style="font-family:宋體;font-size:18;coloe:blue"> 輸入運算數,選擇運算子號:<br> <input type=text name="numberOne" size=6/> <select name="operator"> <option selected="selected" value="+">加 <option value="-">減 <option value="*">乘 <option value="/">除 </select> <input type=text name="numberTwo" size=6/> <br><input type="submit" value="提交"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ pagecontentType="text/html" %> <% 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> <base href="<%=basePath%>"> <title>My JSP 'input.jsp' starting page</title> </head> <body bgcolor=cyan> <p style="font-family:宋體;font-size:18;color:black"> <% String numberOne=request.getParameter("numberOne"); String numberTwo=request.getParameter("numberTwo"); String operator=request.getParameter("operator"); if(numberOne==null||numberOne.length()==0){ response.sendRedirect("input.jsp"); return; } else if(numberTwo==null||numberTwo.length()==0){ response.sendRedirect("input.jsp"); return; } try{ double a=Double.parseDouble(numberOne); double b=Double.parseDouble(numberTwo); double r=0; if(operator.equals("+")) r=a+b; if(operator.equals("-")) r=a-b; if(operator.equals("*")) r=a*b; if(operator.equals("/")) r=a/b; out.print(a+""+operator+""+b+"="+r); } catch(Exception e){ out.println("請輸入數字字元"); } %> </body> </html>
3.製作一個登陸表單,輸入賬號和密碼,如果賬號密碼相同,跳轉到“登入成功”頁面,否則跳轉到“登入失敗”頁面。(加上JS非空驗證)(選做,加驗證碼)
<%@ 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 'index.jsp' starting page</title> </head> <body> <script type="text/javascript"> function validate() { if (loginForm.uname.value == "") { alert("賬號不能為空!"); return; } if (loginForm.upwd.value == "") { alert("密碼不能為空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="2.jsp" method="post"> 使用者名稱:<input type="text" name="uname"><br> 密碼: <input type="password" name="upwd"> <br> <input type="button" value="登入" onClick="validate()"> </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 'index.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); if (uname.equals(upwd)) request.getRequestDispatcher("3.jsp").forward(request, response); else request.getRequestDispatcher("4.jsp").forward(request, response); %> </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 '3.jsp' starting page</title> </head> <body bgcolor=#ffccff> <p>登入成功!</p> </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 '4.jsp' starting page</title> </head> <body bgcolor=#EEEEFF> <p>登入失敗!</p> </body> </html>
4.在上題的表單中增加一個checkbox,讓使用者選擇“是否註冊為會員",如果註冊為會員,則在顯示時增加文字“歡迎您註冊為會員”。
<%@ 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 '5.jsp' starting page</title> </head> <script type="text/javascript"> function validate() { if (loginForm.uname.value == "") { alert("賬號不能為空!"); return; } if (loginForm.upwd.value == "") { alert("密碼不能為空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="6.jsp" method="post"> 使用者名稱:<input type="text" name="uname"><br> 密碼: <input type="password" name="upwd"> <br> 是否註冊為會員:<input type="checkbox" name="member" value="註冊">註冊 <input type="checkbox" name="member" value="不註冊">不註冊<br> <input type="button" value="登入" onClick="validate()"> </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 '6.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); if (uname.equals(upwd)) request.getRequestDispatcher("7.jsp").forward(request, response); else request.getRequestDispatcher("8.jsp").forward(request, response); %> </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 '7.jsp' starting page</title> </head> <p>登入成功!</p> <% request.setCharacterEncoding("utf-8"); String[] member = request.getParameterValues("member"); for (int i = 0; i < member.length; i++) { if (member[i].equals("註冊")) { out.print("歡迎您註冊為會員!"); } } %> </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 '8.jsp' starting page</title> </head> <p>登入失敗!</p> </body> </html>
5.在頁面1的表單內輸人一個數字N,提交,能夠在另一個頁面列印N個“歡迎”字串。
<%@ 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 '9.jsp' starting page</title> </head> <form action="10.jsp" method="post"> <p style="font-family:宋體;font-size:18;color:black"> 請輸入數字:<input type="text" name="number" size=10><br> <br> <br> <input type="submit" name="submit" value="提交"> </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 '10.jsp' starting page</title> </head> <% request.setCharacterEncoding("utf-8"); String number = request.getParameter("number"); int a = Integer.parseInt(number); for (int i = 0; i < a; i++) { out.print("歡迎" + "<br>"); } %> </body> </html>
.在頁面1中輸入賬號和密碼,進行登入,如果賬號和密碼相同,則認為成功登入到頁面2,在頁面2中顯示一個文字框輸人使用者姓名,輸人之後提交,在頁面3中顯示使用者的賬號和姓名。(轉發)request.getRequestDispacher.....forward
<%@ 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 '11.jsp' starting page</title> </head> <script type="text/javascript"> function validate() { if (loginForm.account.value == "") { alert("賬號不能為空!"); return; } if (loginForm.upwd.value == "") { alert("密碼不能為空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="12.jsp" method="post"> 賬號:<input type="text" name="account"><br> 密碼: <input type="password" name="upwd"> <br> <input type="button" value="登入" onClick="validate()"> </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 '12.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); String password = request.getParameter("upwd"); if (account.equals(password)) request.getRequestDispatcher("13.jsp").forward(request, response); else request.getRequestDispatcher("14.jsp").forward(request, response); %> </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 '13.jsp' starting page</title> </head> <p>登入成功!</p> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); %> <form action="15.jsp" method="post"> 使用者名稱:<input type="text" name="username"><br> <br> <input type="submit" name="submit" value="提交"> <input type="hidden" name="account" value="<%=account%>"> </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 '14.jsp' starting page</title> </head> <p>登入失敗!</p> </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 '15.jsp' starting page</title> </head> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); String uname = request.getParameter("username"); out.print("賬號:" + account + "<br>" + "<br>"+"使用者名稱:" + uname); %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <!DOCTYPE HTML> 3 <html> 4 <head> 5 <title>首頁</title> 6 </head> 7 8 <body> 9 輸入運算數,選擇運算子號:<br> 10 <form action="jisuan.jsp"> 11 <input type="text" name="num1" > 12 <select name="fuhao"> 13 <option value="+">加 14 <option value="-">減 15 <option value="*">乘 16 <option value="/">除 17 </select> 18 <input type="text" name="num2" > 19 <br><input type="submit" value="提交"> 20 </form> 21 </body> 22 </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <!DOCTYPE HTML> 3 <html> 4 <head> 5 <title>首頁</title> 6 </head> 7 8 <body> 9 <% 10 String num1 = request.getParameter("num1"); 11 String num2 = request.getParameter("num2"); 12 String fuhao = request.getParameter("fuhao"); 13 if (num1 == null || num2 == null || num1.length() == 0 14 || num2.length() == 0) { 15 response.sendRedirect("index.jsp"); 16 return; 17 } 18 try { 19 double a = Double.parseDouble(num1); 20 double b = Double.parseDouble(num2); 21 double r = 0; 22 if ("+".equals(fuhao)) { 23 r = a + b; 24 } else if ("-".equals(fuhao)) { 25 r = a - b; 26 } else if ("*".equals(fuhao)) { 27 r = a * b; 28 } else if ("/".equals(fuhao)) { 29 r = a / b; 30 } 31 out.print(a + "" + fuhao + "" + b + "=" + r); 32 } catch (Exception e) { 33 out.print("請輸入正確的數字"); 34 } 35 %> 36 </body> 37 </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <!DOCTYPE HTML> 3 <html> 4 <head> 5 <title>登入</title> 6 </head> 7 8 <body> 9 <script> 10 function validate() { 11 if (form.uname.value == "") { 12 alert("賬號不能為空!"); 13 return; 14 } 15 if (form.password.value == "") { 16 alert("密碼不能為空!"); 17 return; 18 } 19 form.submit(); 20 } 21 </script> 22 <form name="form" action="dologin.jsp" method="post"> 23 使用者名稱:<input type="text" name="uname"><br> 密碼: <input 24 type="password" name="password"> <br> 驗證碼: <input 25 type="text" name="checkcode" size="4" /> 26 <!-- 驗證碼--> 27 <img src="img.jsp" /><br> 28 <input type="button" value="登入" onClick="validate()"> 29 </form> 30 </body> 31 </html>
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 request.setCharacterEncoding("utf-8"); 4 %> 5 <!DOCTYPE HTML> 6 <html> 7 <head> 8 <title></title> 9 </head> 10 <body> 11 <% 12 String uname = request.getParameter("uname"); 13 String password = request.getParameter("password"); 14 String checkcode = request.getParameter("checkcode"); 15 session = request.getSession(); 16 String realcode = (String)session.getAttribute("checkcode"); 17 if (uname.equals(password)&&checkcode.equals(realcode)) { 18 request.getRequestDispatcher("true.jsp").forward(request, 19 response); 20 } else { 21 request.getRequestDispatcher("false.jsp").forward(request, 22 response); 23 } 24 %> 25 </body> 26 </html>
1 <%@page import="javax.imageio.ImageIO"%> 2 <%@page import="java.awt.image.BufferedImage"%> 3 <%@ page import="java.awt.*"%> 4 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 5 6 <%!public Color getColor() { 7 Random ran = new Random(); 8 int R = ran.nextInt(255); 9 int G = ran.nextInt(255); 10 int B = ran.nextInt(255); 11 return new Color(R, G, B); 12 } 13 14 public String codeGenerate() { 15 int code = (int) (Math.random() * 9000 + 1000); 16 return String.valueOf(code); 17 }%> 18 <% 19 response.setHeader("Pragma", "no-cache"); 20 response.setHeader("Cache-Control", "no-cache"); 21 response.setHeader("Expires", "0"); 22 BufferedImage image = new BufferedImage(80, 30, 23 BufferedImage.TYPE_INT_RGB); 24 Graphics pen = image.getGraphics(); 25 pen.fillRect(0, 0, 80, 30); 26 pen.setFont(new Font("seif", Font.BOLD, 20)); 27 pen.setColor(Color.BLACK); 28 String checkCode = codeGenerate(); 29 StringBuffer sb = new StringBuffer(); 30 for (int i = 0; i < checkCode.length(); i++) { 31 sb.append(checkCode.charAt(i) + " "); 32 } 33 pen.drawString(sb.toString(), 15, 20); 34 for (int i = 0; i < 20; i++) { 35 Random ran = new Random(); 36 int xBegin = ran.nextInt(80); 37 int yBegin = ran.nextInt(30); 38 int xEnd = ran.nextInt(xBegin + 15); 39 int yEnd = ran.nextInt(yBegin + 15); 40 pen.setColor(getColor()); 41 pen.drawLine(xBegin, yBegin, xEnd, yEnd); 42 } 43 session.setAttribute("checkcode", checkCode); 44 ImageIO.write(image, "jpeg", response.getOutputStream()); 45 out.clear(); 46 out = pageContext.pushBody(); 47 %>
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <!DOCTYPE HTML> 3 <html> 4 <head> 5 <title></title> 6 </head> 7 <body> 8 <h2>登入成功</h2> 9 </body> 10 </html>
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <!DOCTYPE HTML> 3 <html> 4 <head> 5 <title></title> 6 </head> 7 <body> 8 <h2>登入失敗</h2> 9 </body> 10 </html>
4.在上題的表單中增加一個checkbox,讓使用者選擇“是否註冊為會員",如果註冊為會員,則在顯示時增加文字“歡迎您註冊為會員”。
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <!DOCTYPE HTML> 3 <html> 4 <head> 5 <title>註冊會員</title> 6 </head> 7 <body> 8 <script> 9 function validate() { 10 if (form.uname.value == "") { 11 alert("賬號不能為空!"); 12 return; 13 } 14 if (form.password.value == "") { 15 alert("密碼不能為空!"); 16 return; 17 } 18 form.submit(); 19 } 20 </script> 21 22 <form name="form" action="../code03/dologin.jsp" method="post"> 23 使用者名稱:<input type="text" name="uname"><br> 密碼: <input 24 type="password" name="password"> <br> 是否註冊為會員:<input 25 type="checkbox" name="member" value="註冊">註冊 <input 26 type="checkbox" name="member" value="不註冊">不註冊<br> 27 驗證碼: <input type="text" name="checkcode" size="4" /> 28 <!-- 驗證碼--> 29 <img src="../code03/img.jsp" /><br> 30 <input type="button" value="登入" onClick="validate()"> 31 32 </form> 33 </body> 34 </html>
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 request.setCharacterEncoding("utf-8"); 4 %> 5 <!DOCTYPE HTML> 6 <html> 7 <head> 8 <title></title> 9 </head> 10 <body> 11 <% 12 String uname = request.getParameter("uname"); 13 String password = request.getParameter("password"); 14 String checkcode = request.getParameter("checkcode"); 15 session = request.getSession(); 16 String realcode = (String)session.getAttribute("checkcode"); 17 if (uname.equals(password)&&checkcode.equals(realcode)) { 18 request.getRequestDispatcher("true.jsp").forward(request, 19 response); 20 } else { 21 request.getRequestDispatcher("false.jsp").forward(request, 22 response); 23 } 24 %> 25 </body> 26 </html>
1 <%@page import="javax.imageio.ImageIO"%> 2 <%@page import="java.awt.image.BufferedImage"%> 3 <%@ page import="java.awt.*"%> 4 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 5 6 <%!public Color getColor() { 7 Random ran = new Random(); 8 int R = ran.nextInt(255); 9 int G = ran.nextInt(255); 10 int B = ran.nextInt(255); 11 return new Color(R, G, B); 12 } 13 14 public String codeGenerate() { 15 int code = (int) (Math.random() * 9000 + 1000); 16 return String.valueOf(code); 17 }%> 18 <% 19 response.setHeader("Pragma", "no-cache"); 20 response.setHeader("Cache-Control", "no-cache"); 21 response.setHeader("Expires", "0"); 22 BufferedImage image = new BufferedImage(80, 30, 23 BufferedImage.TYPE_INT_RGB); 24 Graphics pen = image.getGraphics(); 25 pen.fillRect(0, 0, 80, 30); 26 pen.setFont(new Font("seif", Font.BOLD, 20)); 27 pen.setColor(Color.BLACK); 28 String checkCode = codeGenerate(); 29 StringBuffer sb = new StringBuffer(); 30 for (int i = 0; i < checkCode.length(); i++) { 31 sb.append(checkCode.charAt(i) + " "); 32 } 33 pen.drawString(sb.toString(), 15, 20); 34 for (int i = 0; i < 20; i++) { 35 Random ran = new Random(); 36 int xBegin = ran.nextInt(80); 37 int yBegin = ran.nextInt(30); 38 int xEnd = ran.nextInt(xBegin + 15); 39 int yEnd = ran.nextInt(yBegin + 15); 40 pen.setColor(getColor()); 41 pen.drawLine(xBegin, yBegin, xEnd, yEnd); 42 } 43 session.setAttribute("checkcode", checkCode); 44 ImageIO.write(image, "jpeg", response.getOutputStream()); 45 out.clear(); 46 out = pageContext.pushBody(); 47 %>
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 request.setCharacterEncoding("utf-8"); 4 %> 5 <!DOCTYPE HTML> 6 <html> 7 <head> 8 <title></title> 9 </head> 10 <body> 11 <h2>登入成功</h2> 12 <% 13 String[] member = request.getParameterValues("member"); 14 for (int i = 0; i < member.length; i++) { 15 if (member[i].equals("註冊")) { 16 out.print("歡迎您註冊為會員!"); 17 } 18 } 19 %> 20 </body> 21 </html>
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <!DOCTYPE HTML> 3 <html> 4 <head> 5 <title></title> 6 </head> 7 <body> 8 <h2>登入失敗</h2> 9 </body> 10 </html>
5.在頁面1的表單內輸人一個數字N,提交,能夠在另一個頁面列印N個“歡迎”字串。
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <!DOCTYPE HTML> 3 <html> 4 <head> 5 <title>登入</title> 6 </head> 7 <body> 8 <form action="print.jsp" method="post"> 9 請輸入數字:<input type="text" name="number" size=10><br> 10 <input type="submit" name="submit" value="提交"> 11 </form> 12 </body> 13 </html>
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 request.setCharacterEncoding("utf-8"); 4 %> 5 <!DOCTYPE HTML> 6 <html> 7 <head> 8 <title>登入</title> 9 </head> 10 <body> 11 <% 12 String number = request.getParameter("number"); 13 int a = Integer.parseInt(number); 14 for (int i = 0; i < a; i++) { 15 out.print("歡迎" + "<br>"); 16 } 17 %> 18 </body> 19 </html>
6.在頁面1中輸入賬號和密碼,進行登入,如果賬號和密碼相同,則認為成功登入到頁面2,在頁面2中顯示一個文字框輸人使用者姓名,輸人之後提交,在頁面3中顯示使用者的賬號和姓名。
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <!DOCTYPE HTML> 3 <html> 4 <head> 5 <title>登入</title> 6 </head> 7 <body> 8 <script> 9 function validate() { 10 if (form.account.value == "") { 11 alert("賬號不能為空!"); 12 return; 13 } 14 if (form.password.value == "") { 15 alert("密碼不能為空!"); 16 return; 17 } 18 form.submit(); 19 } 20 </script> 21 22 <form name="form" action="dologin.jsp" method="post"> 23 賬號:<input type="text" name="account"><br> 密碼: <input 24 type="password" name="password"> <br> <input type="button" 25 value="登入" onClick="validate()"> 26 27 </form> 28 </body> 29 </html>
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 request.setCharacterEncoding("utf-8"); 4 %> 5 <!DOCTYPE HTML> 6 <html> 7 <head> 8 <title>登入</title> 9 </head> 10 <body> 11 <% 12 String account = request.getParameter("account"); 13 String password = request.getParameter("password"); 14 if (account.equals(password)) { 15 request.getRequestDispatcher("true.jsp").forward(request, 16 response); 17 } else { 18 request.getRequestDispatcher("false.jsp").forward(request, 19 response); 20 } 21 %> 22 </body> 23 </html>
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 request.setCharacterEncoding("UTF-8"); 4 %> 5 <!DOCTYPE HTML> 6 <html> 7 <head> 8 <title></title> 9 </head> 10 <body> 11 <h2>登入成功</h2> 12 <% 13 String account = request.getParameter("account"); 14 %> 15 <form action="show.jsp" method="post"> 16 使用者名稱:<input type="text" name="username"><br> <br> <input 17 type="submit" name="submit" value="提交"> <input type="hidden" 18 name="account" value="<%=account%>"> 19 </form> 20 </body> 21 </html>
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <!DOCTYPE HTML> 3 <html> 4 <head> 5 <title></title> 6 </head> 7 <body> 8 <h2>登入失敗</h2> 9 </body> 10 </html>
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 request.setCharacterEncoding("utf-8"); 4 %> 5 <!DOCTYPE HTML> 6 <html> 7 <head> 8 <title></title> 9 </head> 10 <body> 11 <% 12 String account = request.getParameter("account"); 13 String uname = request.getParameter("username"); 14 out.print("賬號:" + account + "<br>" + "<br>" + "使用者名稱:" + uname); 15 %> 16 </bod
2.教材P97 實驗2
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ pagecontentType="text/html" %> <% 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> <base href="<%=basePath%>"> <title>My JSP 'input.jsp' starting page</title> </head> <body bgcolor=#ffccff> <form action="computer.jsp" method=post name=form> <p style="font-family:宋體;font-size:18;coloe:blue"> 輸入運算數,選擇運算子號:<br> <input type=text name="numberOne" size=6/> <select name="operator"> <option selected="selected" value="+">加 <option value="-">減 <option value="*">乘 <option value="/">除 </select> <input type=text name="numberTwo" size=6/> <br><input type="submit" value="提交"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ pagecontentType="text/html" %> <% 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> <base href="<%=basePath%>"> <title>My JSP 'input.jsp' starting page</title> </head> <body bgcolor=cyan> <p style="font-family:宋體;font-size:18;color:black"> <% String numberOne=request.getParameter("numberOne"); String numberTwo=request.getParameter("numberTwo"); String operator=request.getParameter("operator"); if(numberOne==null||numberOne.length()==0){ response.sendRedirect("input.jsp"); return; } else if(numberTwo==null||numberTwo.length()==0){ response.sendRedirect("input.jsp"); return; } try{ double a=Double.parseDouble(numberOne); double b=Double.parseDouble(numberTwo); double r=0; if(operator.equals("+")) r=a+b; if(operator.equals("-")) r=a-b; if(operator.equals("*")) r=a*b; if(operator.equals("/")) r=a/b; out.print(a+""+operator+""+b+"="+r); } catch(Exception e){ out.println("請輸入數字字元"); } %> </body> </html>
3.製作一個登陸表單,輸入賬號和密碼,如果賬號密碼相同,跳轉到“登入成功”頁面,否則跳轉到“登入失敗”頁面。(加上JS非空驗證)(選做,加驗證碼)
<%@ 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 'index.jsp' starting page</title> </head> <body> <script type="text/javascript"> function validate() { if (loginForm.uname.value == "") { alert("賬號不能為空!"); return; } if (loginForm.upwd.value == "") { alert("密碼不能為空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="2.jsp" method="post"> 使用者名稱:<input type="text" name="uname"><br> 密碼: <input type="password" name="upwd"> <br> <input type="button" value="登入" onClick="validate()"> </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 'index.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); if (uname.equals(upwd)) request.getRequestDispatcher("3.jsp").forward(request, response); else request.getRequestDispatcher("4.jsp").forward(request, response); %> </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 '3.jsp' starting page</title> </head> <body bgcolor=#ffccff> <p>登入成功!</p> </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 '4.jsp' starting page</title> </head> <body bgcolor=#EEEEFF> <p>登入失敗!</p> </body> </html>
4.在上題的表單中增加一個checkbox,讓使用者選擇“是否註冊為會員",如果註冊為會員,則在顯示時增加文字“歡迎您註冊為會員”。
<%@ 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 '5.jsp' starting page</title> </head> <script type="text/javascript"> function validate() { if (loginForm.uname.value == "") { alert("賬號不能為空!"); return; } if (loginForm.upwd.value == "") { alert("密碼不能為空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="6.jsp" method="post"> 使用者名稱:<input type="text" name="uname"><br> 密碼: <input type="password" name="upwd"> <br> 是否註冊為會員:<input type="checkbox" name="member" value="註冊">註冊 <input type="checkbox" name="member" value="不註冊">不註冊<br> <input type="button" value="登入" onClick="validate()"> </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 '6.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); if (uname.equals(upwd)) request.getRequestDispatcher("7.jsp").forward(request, response); else request.getRequestDispatcher("8.jsp").forward(request, response); %> </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 '7.jsp' starting page</title> </head> <p>登入成功!</p> <% request.setCharacterEncoding("utf-8"); String[] member = request.getParameterValues("member"); for (int i = 0; i < member.length; i++) { if (member[i].equals("註冊")) { out.print("歡迎您註冊為會員!"); } } %> </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 '8.jsp' starting page</title> </head> <p>登入失敗!</p> </body> </html>
5.在頁面1的表單內輸人一個數字N,提交,能夠在另一個頁面列印N個“歡迎”字串。
<%@ 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 '9.jsp' starting page</title> </head> <form action="10.jsp" method="post"> <p style="font-family:宋體;font-size:18;color:black"> 請輸入數字:<input type="text" name="number" size=10><br> <br> <br> <input type="submit" name="submit" value="提交"> </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 '10.jsp' starting page</title> </head> <% request.setCharacterEncoding("utf-8"); String number = request.getParameter("number"); int a = Integer.parseInt(number); for (int i = 0; i < a; i++) { out.print("歡迎" + "<br>"); } %> </body> </html>
.在頁面1中輸入賬號和密碼,進行登入,如果賬號和密碼相同,則認為成功登入到頁面2,在頁面2中顯示一個文字框輸人使用者姓名,輸人之後提交,在頁面3中顯示使用者的賬號和姓名。(轉發)request.getRequestDispacher.....forward
<%@ 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 '11.jsp' starting page</title> </head> <script type="text/javascript"> function validate() { if (loginForm.account.value == "") { alert("賬號不能為空!"); return; } if (loginForm.upwd.value == "") { alert("密碼不能為空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="12.jsp" method="post"> 賬號:<input type="text" name="account"><br> 密碼: <input type="password" name="upwd"> <br> <input type="button" value="登入" onClick="validate()"> </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 '12.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); String password = request.getParameter("upwd"); if (account.equals(password)) request.getRequestDispatcher("13.jsp").forward(request, response); else request.getRequestDispatcher("14.jsp").forward(request, response); %> </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 '13.jsp' starting page</title> </head> <p>登入成功!</p> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); %> <form action="15.jsp" method="post"> 使用者名稱:<input type="text" name="username"><br> <br> <input type="submit" name="submit" value="提交"> <input type="hidden" name="account" value="<%=account%>"> </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 '14.jsp' starting page</title> </head> <p>登入失敗!</p> </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 '15.jsp' starting page</title> </head> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); String uname = request.getParameter("username"); out.print("賬號:" + account + "<br>" + "<br>"+"使用者名稱:" + uname); %> </body> </html>