学生登陆查询系统
1 程序的主要功能及特点
实现一个登录界面的基本功能，具体要求：
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登录界面login.jsp含有表单，用户能够输入用户名和密码，并提交表单给verify.jsp。
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Verify.jsp读取表单信息，并验证接收的用户名和密码是否与verify.jsp内置的相应变量值一致。
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如果一致，则转向页面success.jsp，显示"成功登录"并可以手动选择要查询的系统。
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如果不一致，则转向页面failure.jsp，显示"登录失败"并手动返回。
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本系统默认：用户名14347119密码wuxing为正确。
2 程序部署及运行截图和相应说明（手工部署）
部署
- 成功登陆后可以选择登陆某一查询系统，见下图
- 不成功登陆提示错误并返回，见下图
SUCCESS LOGIN
FAILURE LOGIN
3 程序源代码
login.jsp
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <title>loginPage</title> 7 </head> 8 <body bgcolor=AliceBlue > 9 <form name="loginForm" method="post" action="verify.jsp"> 10 <center> 11 <font size=6>学生微教务</font> 12 </center> 13 <center> 14 <table> 15 <tr> 16 <td height="40" weight="100">UserName<input type="text" name="userName" id="userName"></td> 17 </tr> 18 <tr> 19 <td height="40" weight="100">Password<input type="password" name="password" id="password"></td> 20 </tr> 21 <tr> 22 <td><input type="submit" value="login" style="background-color:white"> <input type="reset" value="reset" style="background-color:yellow"></td> 23 </tr> 24 </table> 25 </center> 26 </form> 27 </body> 28 </html>
verify.jsp
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <title>Authentication</title> 7 </head> 8 <body> 9 <% 10 request.setCharacterEncoding("UTF-8"); 11 String name = request.getParameter("userName"); 12 String password = request.getParameter("password"); 13 if(name.equals("14347119")&& password.equals("wuxing")) { 14 %> 15 <jsp:forward page="success.jsp"> 16 <jsp:param name="userName" value="<%=name%>"/></jsp:forward> 17 <%} 18 else{ 19 %> 20 <jsp:forward page="failure.jsp"></jsp:forward> 21 <%} 22 %> 23 </body> 24 </html>
success.jsp
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <title>Login Success</title> 7 </head> 8 <body bgcolor=AliceBlue> 9 <form name="SUCCESS" method="post" action="JMP.jsp"> 10 <center> 11 <%request.setCharacterEncoding("UTF-8"); 12 String name = request.getParameter("userName"); 13 out.println("Welcome:"+name);%><BR> 14 </center> 15 <center> 16 <BR><font size="6">Score Query System</font><BR> 17 <BR><font size="4">Please select one item to check</font> 18 <Select name="grade" > 19 <Option selected value="http://wjw.sysu.edu.cn">Academic performance</option> 20 <Option value="http://cet.99sushe.com">CET-4 & CET-6</option> 21 <Option value="http://chaxun.neea.edu.cn/examcenter/query.cn?op=doQueryCond&pram=results&sid=300"> NCRE</option> 22 </Select> 23 <BR><BR> <Input type="submit" value="submit" name="submit"> 24 </center> 25 </body> 26 </html>
failure.jsp
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>Login Failure</title> 8 </head> 9 <body bgcolor="Aliceblue"> 10 <center><font size="4"> 11 Incorrect username or password! Please return and try again. 12 <BR><A href="login.jsp" >return 13 </font> 14 </center> 15 </body> 16 </html>
JMP.JSP（用于跳转网站页面）
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>JMP</title> 8 </head> 9 <body> 10 <% String s=request.getParameter("grade"); 11 response.sendRedirect( s); %> 12 </body> 13 </html>