注册界面连接数据库

com.bean包：

package com.bean;

public class uBean{
    private String zhanghao;
    private String password;
    private String sex;
    private String name;
    private String id;
    private String postbox;
    private String xueyuan;
    private String xi;
    private String class_;
    private String time;
    private String area; 
    private String beizhu;
    
    public uBean() {}
    public uBean(String zhanghao, String password, String sex, String name, String id, String postbox, String xueyuan,
            String xi, String class_, String time, String area, String beizhu) {
        super();
        this.zhanghao = zhanghao;
        this.password = password;
        this.sex = sex;
        this.name = name;
        this.id = id;
        this.postbox = postbox;
        this.xueyuan = xueyuan;
        this.xi = xi;
        this.class_ = class_;
        this.time = time;
        this.area = area;
        this.beizhu = beizhu;
    }
    public String getZhanghao() {
        return zhanghao;
    }
    public void setZhanghao(String zhanghao) {
        this.zhanghao = zhanghao;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    public String getPostbox() {
        return postbox;
    }
    public void setPostbox(String postbox) {
        this.postbox = postbox;
    }
    public String getXueyuan() {
        return xueyuan;
    }
    public void setXueyuan(String xueyuan) {
        this.xueyuan = xueyuan;
    }
    public String getXi() {
        return xi;
    }
    public void setXi(String xi) {
        this.xi = xi;
    }
    public String getClass_() {
        return class_;
    }
    public void setClass_(String class_) {
        this.class_ = class_;
    }
    public String getTime() {
        return time;
    }
    public void setTime(String time) {
        this.time = time;
    }
    public String getArea() {
        return area;
    }
    public void setArea(String area) {
        this.area = area;
    }
    public String getBeizhu() {
        return beizhu;
    }
    public void setBeizhu(String beizhu) {
        this.beizhu = beizhu;
    }
}

com.dao包：

package com.dao;

import java.sql.Connection;
import java.sql.Statement;

import com.bean.uBean;
import com.db.DB;

public class Dao {
    public boolean add(uBean bean) {
        String tablename = "hhjing";
        DB db=new DB();
        Connection con = db.getCon();
        
        try {
            String sql="insert into "+tablename+"(zhanghao,password,sex,name,id,postbox,xueyuan,xi,class_,time,area,beizhu) values ('"+bean.getZhanghao()+"','"+bean.getPassword()+"','"+bean.getSex()+"','"+bean.getName()+"','"+bean.getId()+"','"+bean.getPostbox()+"','"+bean.getXueyuan()+"','"+bean.getXi()+"','"+bean.getClass_()+"','"+bean.getTime()+"','"+bean.getArea()+"','"+bean.getBeizhu()+"')";
            Statement stm = con.createStatement();
            System.out.println(sql);
            stm.execute(sql);
            db.close(stm, con);
            System.out.println("add success");
        }catch(Exception e) {
            e.printStackTrace();
            System.out.println("add false");
            return false;
        }
        System.out.println("add true");
        return true;
    }
}

com.db包：

package com.db;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import com.sun.corba.se.impl.ior.GenericTaggedComponent;

public class DB {
    private static String mysqlname = "hhjing";
    private static Connection con;
    private static Statement sta;
    private static ResultSet re;
    private static String coursename = "com.mysql.jdbc.Driver";
    private static String url = "jdbc:mysql://127.0.0.1:3306/"+mysqlname+"?useSSL=false&characterEncoding=utf8";
    
    //���ݿ�����
    public static Connection getCon() {
        try {
            Class.forName(coursename);
            System.out.println("驱动加载成功");
        }catch(ClassNotFoundException e) {
            e.printStackTrace();
        }
        try {
            con = DriverManager.getConnection(url,"root","hhj20000604@");
            System.out.println("数据库连接成功");
        }catch(Exception e){
            e.printStackTrace();
            con = null;
        }
        return con;
    }
    
    public static void close(Statement sta,Connection connection) {
        if(sta!=null) {
            try {
                sta.close();
            }catch(SQLException e) {
                e.printStackTrace();
            }
        }
        if(connection!=null) {
            try {
                connection.close();
            }catch(SQLException e) {
                e.printStackTrace();
            }
        }
    }
        
    //���ݿ�ر�
    public static void close(ResultSet re,Statement sta,Connection connection) {
        if(re!=null) {
            try {
                re.close();
            }catch(SQLException e) {
            e.printStackTrace();
            }
        }
        if(sta!=null) {
            try {
                sta.close();
            }catch(SQLException e) {
                e.printStackTrace();
            }
        }
        if(connection!=null) {
            try {
                connection.close();
            }catch(SQLException e) {
                e.printStackTrace();
            }
        }
    }
    public static void main(String[] args)
    {
        getCon();
    }
}

com.servlet包：

package com.servlet;

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.swing.JOptionPane;

import com.bean.uBean;
import com.dao.Dao;

/**
 * Servlet implementation class Servlet
 */
@WebServlet("/Servlet")
public class Servlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public Servlet() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    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");
          response.setContentType("textml;charset=utf-8");
          uBean bean =new uBean(request.getParameter("zhanghao"),request.getParameter("password"),request.getParameter("sex"),request.getParameter("name"),request.getParameter("id"),request.getParameter("postbox"),request.getParameter("xueyuan"),request.getParameter("xi"),request.getParameter("class_"),request.getParameter("time"),request.getParameter("area"),request.getParameter("beizhu"));
          Dao dao = new Dao();
          dao.add(bean);
//          JOptionPane.showMessageDialog(null, "注册成功");
//          //用于跳出框架跳转页面
//          response.sendRedirect("index.jsp");
          PrintWriter out = response.getWriter();
          //index.jsp改成需要跳转的界面,alert里写提示框的内容
          out.print("<script language='javascript'>alert('register success');window.location.href='index.jsp';</script>");
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
    }

}

index.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<div style="width:100%;text-align:center">
        <form id="form" action="Servlet" method="post" onsubmit="return checkAll()">
        <% //form用于提交，table用于布局，tr每行,td每列，使用时table > tr > td ，若报错Invalid location of tag，就是嵌套顺序不对%>
        <table>
            <tr>
                <td>登录账号：</td>
               <td><input id="zhanghao" type=text"  name="zhanghao" onblur="checkZhanghao()" /></td>
               <td><span  style="font-size:13px" id="zhanghaospan"></span></td>
            <tr>
                <td>登录密码:</td>
                <td><input id="password" type="password"  name="password" onblur="checkPassword()" /></td>
                <td><span  style="font-size:13px" id="passwordspan"></span></td>
            </tr>
             <tr>
                <td>性别:</td>
                <td>
                    男:<input type="radio" value="boy" name="sex"/>
                    女:<input type="radio" value="girl" name="sex"/>
                </td>
            </tr>
            <tr>
                <td>姓名:</td>
                <td><input type="text"  value=" " name="name"/></td>
            </tr>
             <tr>
                <td>学号：</td>
               <td><input id="id" type=text"  name="id" onblur="checkId()" /></td>
               <td><span  style="font-size:13px" id="idspan"></span></td>
            </tr>
             <tr>
                <td>电子邮箱:</td>
                <td><input id="postbox" type="text"  name="postbox" onblur="checkPostbox()" placeholder="邮箱"/></td>
                <td><span  style="font-size:13px" id="postboxspan"></span></td>
            </tr>
            <tr>
                <td>所在学院：</td>
               <td><input id="xueyuan" type=text"  name="xueyuan" onblur="checkXueyuan()" /></td>
               <td><span  style="font-size:13px" id="xueyuanspan"></span></td>
            </tr>
            <tr>
                <td>所在系：</td>
               <td><input id="xi" type=text"  name="xi" onblur="checkXi()" /></td>
               <td><span  style="font-size:13px" id="xispan"></span></td>
            </tr>
            <tr>
                <td>所在班级：</td>
               <td><input id="class_" type=text"  name="class_" onblur="checkClass_()" /></td>
               <td><span  style="font-size:13px" id="class_span"></span></td>
            </tr>
            <tr>
                <td>入学年份（界）:</td>
                <td>
                    <select name="time">
                        <option selected= "selected">1998</option>
                        <option>1997</option>
                        <option>1996</option> 
                    </select>
                </td>
            </tr>
            
            <tr>
                <td>生源地:</td>
                <td><input id="area" type="text"  name="area" onblur="checkArea()" /></td>
                <td><span  style="font-size:13px" id="areaspan"></span></td>
            </tr>
            <tr>
                <td>备注:</td>
                <td><input id="beizhu" type="text"  name="beizhu" onblur="checkBeizhu()" /></td>
                <td><span  style="font-size:13px" id="beizhuspan"></span></td>
            </tr>
           <tr>
                <td><input type="submit" value="注册"/></td>
                <td><input type="button" name="" value="重置" onclick="formReset()" /></td>
            </tr>
        </table>
    </form>
</div>
    <script type="text/javascript">
        //重置按钮处添加onclick调用formReset %>
        function formReset() 
        {
            document.getElementById("form").reset();
        }
        function checkZhanghao()
        {
            var zhanghao = document.getElementById("zhanghao").value;
            var spanNode = document.getElementById("zhanghaospan");
            //编写邮箱的正则
            var reg = /^[0-9a-zA-Z]{6}/;
            if(reg.test(zhanghao)){
                //符合规则
                spanNode.innerHTML = "".fontcolor("green");
                return true;
            }else{
                //不符合规则
                spanNode.innerHTML = "登录账号格式不正确，请重新填写！".fontcolor("red");
                return false;
            }
        }
        //邮箱输入框处添加onblur在鼠标焦距移出时调用checkPostbox %>
        function checkPostbox()
        {
            var postbox = document.getElementById("postbox").value;
            var spanNode = document.getElementById("postboxspan");
            //编写邮箱的正则
            var reg = /^[a-z0-9]\w+@[a-z0-9]+(\.[a-z]{2,3}){1,2}$/i;
            if(reg.test(postbox)){
                //符合规则
                spanNode.innerHTML = "".fontcolor("green");
                return true;
            }else{
                //不符合规则
                spanNode.innerHTML = "邮箱格式不正确，请重新填写！".fontcolor("red");
                return false;
            }
        }
        function checkPassword()
        {
            var password = document.getElementById("password").value;
            var spanNode = document.getElementById("passwordspan");
            //编写密码的正则
            var reg =/^(?=.*[0-9])(?=.*[a-zA-Z])(?=.*[^a-zA-Z0-9]).{8,30}$/;
            if(reg.test(password)){
                //符合规则
                spanNode.innerHTML = "".fontcolor("green");
                return true;
            }else{
                //不符合规则
                spanNode.innerHTML = "密码格式不正确，请重新填写！".fontcolor("red");
                return false;
            }
        }
        function checkId()
        {
            var id = document.getElementById("id").value;
            var spanNode = document.getElementById("idspan");
            //学号的正确形式
           // var reg = /^[0-9a-zA-Z]{6}/;
            if((id<"20180000")|| (id>"20189999"))
            {
                spanNode.innerHTML = "学号格式不正确，请重新填写！".fontcolor("red");
                return false;
            }
            else{
                //不符合规则
                spanNode.innerHTML = "".fontcolor("green");
                return true;
            }
        }
        function checkAll(){
            var postbox = checkPostbox();
            var id=checkId();
            var zhanghao=checkZhanghao();
            var password=checkPassword();
            if(postbox&&id&&password&&zhanghao){
                return true;    
            }else{       
                return false;     
            }     
        }
    </script>
</body>
</html>

代码测试截图：

 

 输入数据库截图：

 

来源：https://www.cnblogs.com/hhjing/p/11716205.html