Jsp&Servlet實現註冊功能
先給出目錄結構，方便理解後面路徑
1.web.xml代碼
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<servlet>
<servlet-name>RegServlet</servlet-name>
<servlet-class>Servlet.RegServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>RegServlet</servlet-name>
<url-pattern>/Servlet/RegServlet</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>register.jsp</welcome-file>
</welcome-file-list>
</web-app>
2.register.jsp代碼
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Register</title>
</head>
<body>
<div>
<form action="Servlet/RegServlet" method="post">
<table >
<tr>
<td>Username:</td>
<td><input type="text" name="username"></td>
</tr>
<tr>
<td>Password:</td>
<td><input type="password" name="password"></td>
</tr>
<tr>
<td>Confirm Password:</td>
<td><input type="password" name="confirm_password"></td>
</tr>
<tr>
<td>Gender:</td>
<td> <input type="text" name="gender"></td>
</tr>
<tr>
<td>Tel:</td>
<td><input type="text" name="tel"></td>
</tr>
<tr>
<td><input type="submit" value="Register" ></td>
</tr>
</table>
</form>
</div>
</body>
</html>
3.RegServlet.java代碼
package Servlet;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebServlet(name = "RegServlet")
public class RegServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String username = request.getParameter("username");
String password = request.getParameter("password");
String confirm_password =request.getParameter("confirm_password");
String gender = request.getParameter("gender");
String tel =request.getParameter("tel");
if("Tom".equals(username)&&"123".equals(password)&&confirm_password.equals(password)&&"Male".equals(gender)&&"12345678".equals(tel)){
request.getRequestDispatcher("/RegSucc.jsp").forward(request,response);
}
else{
request.getRequestDispatcher("/RegFailed.jsp").forward(request,response);
}
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request,response);
}
}
4.RegSucc.jsp代碼
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Register Successfully</title>
<style>
table{
border-collapse: collapse
}
tr,td{
text-align: center;
border: 2px solid black;
}
td{
width: 100px;
}
</style>
</head>
<body>
<%
String username = request.getParameter("username");
String password = request.getParameter("password");
String confirm_password =request.getParameter("confirm_password");
String gender = request.getParameter("gender");
String tel =request.getParameter("tel");
%>
<div>
<p>Congratulations. <%=username%> has registered successfully!</p>
<table>
<tr>
<td>Username</td>
<td><%=username%></td>
</tr>
<tr>
<td>Password</td>
<td><%=password%></td>
</tr>
<tr>
<td>Gender</td>
<td><%=gender%></td>
</tr>
<tr>
<td>Tel</td>
<td><%=tel%></td>
</tr>
</table>
</div>
</body>
</html>
5.RegFailed.jsp代碼
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>RegFailed</title>
</head>
<body>
<div>
<p>Register failed! Please go back to registration page and try again.</p>
<a href="/register.jsp">Registration page</a>
</div>
</body>
</html>
效果如下：
成功
失敗
