用戶注冊實例 · Java96班隨堂筆記

[TOC] # 用戶注冊實例 **代碼片段：** reg.jsp ~~~ <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <form action="regService.jsp" method="post"> 用戶名：<input type="text" name="username" value=""/><br/> 密碼：<input type="password" name="password" value=""/><br/> <input type="submit" value="注冊" /> </form> </body> </html> ~~~ regService.jsp ~~~ <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <% String username = request.getParameter("username"); String password = request.getParameter("password"); boolean usernameCheck = null != username && username.trim().length() > 6; boolean passwordCheck = null != password && password.trim().length() > 6; if (usernameCheck && passwordCheck) { // 往數據庫插入數據 %> <jsp:forward page="regSuccess.jsp"></jsp:forward> <% } else { %> <jsp:forward page="regError.jsp"></jsp:forward> <% } %> </body> </html> ~~~ regSuccess.jsp ~~~ <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <h1>恭喜你，注冊成功！</h1>  </body> </html> ~~~ regError.jsp ~~~ <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <h1>用戶名或者密碼不符合要求，<a href="reg.jsp">點擊重新注冊</a></h1> </body> </html> ~~~