JavaWeb之Servlet注册页面怎么实现

2023-06-30 00:06:43 540人浏览安东尼

摘要

这篇“javaweb之Servlet注册页面怎么实现”文章的知识点大部分人都不太理解，所以小编给大家总结了以下内容，内容详细，步骤清晰，具有一定的借鉴价值，希望大家阅读完这篇文章能有所收获，下面我们一起来看看这篇“JavaWEB之Servl

这篇“javaweb之Servlet注册页面怎么实现”文章的知识点大部分人都不太理解，所以小编给大家总结了以下内容，内容详细，步骤清晰，具有一定的借鉴价值，希望大家阅读完这篇文章能有所收获，下面我们一起来看看这篇“JavaWEB之Servlet注册页面怎么实现”文章吧。

Servlet-注册页面

环境准备：

本文所用到环境如下：

软件：Eclipse(2018)

服务器：Tomcat 9

JavaWeb之Servlet注册页面怎么实现

在index.jsp添加相关的代码

<%@ 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><h2>用户注册</h2><div>    <fORM action="ReGISterServlet" method="get">    <table>    <tr>    <td>登录名：</td>     <td><input type="text" name="username" required> (可包含a-z、0-9和下划线)</td>    </br>    <tr>    <td>密码：</td>     <td><input type="passWord" name="password" required> (至少包含6个字符)</td>    </tr>    <tr>    <td>再次输入密码：</td>     <td><input type="password" name="confirmPassword" required></td>    </tr>    <tr>    <td>电子邮箱：</td>     <td><input type="text" id="email" name="youxaing" required> (必须包含@字符)</td>    </tr>    <tr>    <td>性别：</td>     <td><input type="radio" name="gender" value="男" required>男        <input type="radio" name="gender" value="女" required>女</td>    </tr>     <td>头像：</td>     <td><input type="file" name="bfile" value="选择文件" accept="image@WebServlet("/Login_Servlet")public class Login_Servlet extends httpservlet {private static final long serialVersionUID = 1L;               public Login_Servlet() {        super();        // TODO Auto-generated constructor stub    }protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stub//response.getWriter().append("Served at: ").append(request.getContextPath()); request.setCharacterEncoding("UTF-8");//处理乱码问题        response.setCharacterEncoding("UTF-8");//处理乱码问题        //获得用户在register界面提交的数据        String username = request.getParameter("username");        String password = request.getParameter("password");        String confirmPassword = request.getParameter("confirmPassword");        String gender = request.getParameter("gender");        String youxaing = request.getParameter("youxaing");        String bfile = request.getParameter("bfile");        String hobby  = request.getParameter("hobby");        String selectList = request.getParameter("selectList");        //判断密码是否正确        if (password.equals(confirmPassword)){//如果密码相同，重定向到成功界面            HttpSession session = request.getSession();//获取session            session.setAttribute("session_username",username);            session.setAttribute("session_password",password);            session.setAttribute("session_gender",gender);            session.setAttribute("session_youxaing",youxaing);            session.setAttribute("session_bfile",bfile);            session.setAttribute("session_hobby", hobby);            session.setAttribute("session_selectList",selectList);                       request.getRequestDispatcher("SuccessServlet").forward(request, response);          //  response.sendRedirect("register_login.jsp");//重定向到成功页面        }else {//如果密码不同，通知用户密码输入不一样            request.getSession().setAttribute("passwordError","yes");            request.getRequestDispatcher("ErrorServlet").forward(request, response);//            response.sendRedirect("register.jsp");//重定向到登陆界面        }    }protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stubdoGet(request, response);}}

配置web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">  <display-name>onlyxiu_ceshi</display-name>  <welcome-file-list>    <welcome-file>index.html</welcome-file>    <welcome-file>index.htm</welcome-file>    <welcome-file>index.jsp</welcome-file>    <welcome-file>default.html</welcome-file>    <welcome-file>default.htm</welcome-file>    <welcome-file>default.jsp</welcome-file>  </welcome-file-list>    <servlet>    <servlet-name>Login_Servlet</servlet-name>    <servlet-class>onlyxiu_ceshi.com</servlet-class>  </servlet>  <servlet-mapping>    <servlet-name>Login_Servlet</servlet-name>    <url-pattern>/onlyxiu_ceshi/Login_Servlet</url-pattern>  </servlet-mapping>  </web-app>

JavaWeb之Servlet注册页面怎么实现

ErrorServlet.java的代码

package onlyxiu_ceshi.com;import java.io.IOException;import java.io.PrintWriter;import java.util.Arrays;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;@WebServlet("/ErrorServlet")public class ErrorServlet extends HttpServlet {private static final long serialVersionUID = 1L;               public ErrorServlet() {        super();        // TODO Auto-generated constructor stub    }protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stub//response.getWriter().append("Served at: ").append(request.getContextPath());response.setHeader("Content-type","text/html; charset=UTF-8");String username = request.getParameter("username");String password = request.getParameter("password");String gender = request.getParameter("gender");String youxaing = request.getParameter("youxaing");String bfile = request.getParameter("bfile");String hobby = request.getParameter("hobby");String selectList = request.getParameter("selectList");PrintWriter out = response.getWriter();out.print("<h2>用户注册信息</h2>");out.print("用户名:\n"+username+"<br>");out.print("密码:"+password+"<br>");out.print("电子邮箱："+youxaing+"<br>");out.print("性别:"+gender+"<br>");out.print("头像："+bfile+"<br>");out.print("爱好："+hobby+"<br>");out.print("喜欢的城市："+selectList+"<br>");//out.print("登陆失败");out.close();}protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stub//doGet(request, response);}}

SuccessServlet.java

package onlyxiu_ceshi.com;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;@WebServlet("/SuccessServlet")public class SuccessServlet extends HttpServlet {private static final long serialVersionUID = 1L;               public SuccessServlet() {        super();        // TODO Auto-generated constructor stub    }protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stub//response.getWriter().append("Served at: ").append(request.getContextPath());response.setHeader("Content-type","text/html; charset=UTF-8");String username = request.getParameter("username");String password = request.getParameter("password");String gender = request.getParameter("gender");String youxaing = request.getParameter("youxaing");String bfile = request.getParameter("bfile");String hobby = request.getParameter("hobby");String selectList = request.getParameter("selectList");PrintWriter out = response.getWriter();out.print("<h2>用户注册信息</h2>");out.print("用户名:\n"+username+"<br>");out.print("密码:"+password+"<br>");out.print("电子邮箱："+youxaing+"<br>");out.print("性别:"+gender+"<br>");out.print("头像："+bfile+"<br>");out.print("爱好："+hobby+"<br>");out.print("喜欢的城市："+selectList+"<br>");//out.println("登陆成功");out.close();}protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stub//doGet(request, response);}}

JavaWeb之Servlet注册页面怎么实现