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基于javaweb+jsp的访客管理系统

IT影子 2022-03-30 阅读 40
javawebjspmysqlservletssm

JavaWeb JavaBean JSP MVC MySQL Tomcat JavaScript Bootstrap

基础JSP+Servlet或JSP+SSM(Spring、SpringMVC、MyBatis)框架或JSP+SSM+Maven(pom.xml)框架或SpringBoot…均可

开发工具：eclipse/idea/myeclipse/sts等均可配置运行

适用

课程设计，大作业，毕业设计，项目练习，学习演示等

import com.demo.service.impl.UserServiceImpl;
import com.demo.vo.User;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.Serializable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 用户模块的Servlet控制层，负责接收页面传过来的请求参数，根据action参数的值来确定页面要执行的具体操作<br>
 * 而后再调用UserService业务层的方法来处理具体的业务，最后将处理完成的结果返回或跳转至相应页面
 */
//@WebServlet("/UserServlet")
public class UserServlet extends HttpServlet {

    /**
     * 处理Post请求
     *
     * @param request

        return (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
                || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
                || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
                || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS);
    }

    /**
     * 判断字符串是否是乱码
     *
     * @param strName
     * @return
     */
    public static boolean isMessyCode(String strName) {
        java.util.regex.Pattern p = java.util.regex.Pattern.compile("\\s*|\t*|\r*|\n*");

import com.demo.vo.User;

import javax.imageio.ImageIO;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;

                str = new String(str.getBytes("GB2312"), "ISO-8859-1");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("GBK"), "ISO-8859-1");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("UTF-8"), "GB2312");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("ISO-8859-1"), "GB2312");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("GBK"), "GB2312");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("UTF-8"), "GBK");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("ISO-8859-1"), "GBK");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("GB2312"), "GBK");

    <%@ include file="include/head.jsp" %>
</head>
<body>
<div class="container-fluid">
    <ul class="nav nav-tabs">
        <li><a href="UserServlet?action=list">用户列表</a></li>
        <li class="active"><a href="#">添加</a></li>
    </ul>
    <br/>
    <form class="form-horizontal" role="form" action="UserServlet?action=add" method="post" onsubmit="return check()">
        <div class="form-group">
            <label class="col-sm-3 control-label">用户名：</label>
            <div class="col-sm-5">
                <input type="text" class="form-control" id="username" name="username">
            </div>
        </div>
        <div class="form-group">
            <label class="col-sm-3 control-label">密码：</label>
            <div class="col-sm-5">
                <input type="text" class="form-control" id="password" name="password">
            </div>

        if (totalRecord % pageSize == 0) {
            //说明整除，正好每页显示pageSize条数据，没有多余一页要显示少于pageSize条数据的
            this.totalPage = totalRecord / pageSize;
        } else {
            //不整除，就要在加一页，来显示多余的数据。
            this.totalPage = totalRecord / pageSize + 1;
        }
        //开始索引
        this.startIndex = (pageNum - 1) * pageSize;
        //显示5页，这里自己可以设置，想显示几页就自己通过下面算法修改
        this.start = 1;

                    list.add(vo);
                }
            String sqlCount = "select count(*) from `t_user` where 1=1 " + condition;
            ps = c.prepareStatement(sqlCount);
            rs = ps.executeQuery();
            if (rs.next()) {
                totalCount = rs.getInt(1);
            }
            rs.close();
            ps.close();
            c.close();

                this.end = 5;
            }
            if (end > this.totalPage) {
                //比如当前页是倒数第2页或者最后一页，也同样不符合上面这个规则
                this.end = totalPage;
                this.start = end - 5;
            }
        }
    }

    //get、set方法。
    public int getPageNum() {
        return pageNum;

                <input type="text" class="form-control" id="password" name="password">
            </div>
        </div>
        <div class="form-group">
            <label class="col-sm-3 control-label">姓名：</label>
            <div class="col-sm-5">
                <input type="text" class="form-control" id="realName" name="realName">
            </div>
        </div>
        <div class="form-group">

    public void setId(Long id) {
        this.id = id;
    }
    public String getLaifangName() {
        return laifangName;
    }

    public void setLaifangName(String laifangName) {
        this.laifangName = laifangName;
    }
    public String getLaifangSex() {
        return laifangSex;
    }


            ps.execute();
            ps.close();
            c.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    //@Override
    public boolean delete(long id) {
        try {
            Connection c = Util.getConnection();
            Statement s = c.createStatement();
            String sql = "delete from `t_laifang` where id = " + id;
            s.execute(sql);
            s.close();
            c.close();
            return true;
        } catch (Exception e) {
            e.printStackTrace();

    public String getLaifangOutdate() {
        return laifangOutdate;
    }

    public void setLaifangOutdate(String laifangOutdate) {
        this.laifangOutdate = laifangOutdate;
    }
    public String getLaifangReason() {
        return laifangReason;
    }

    public void setLaifangReason(String laifangReason) {
        this.laifangReason = laifangReason;

        return laifangText;
    }

    public void setLaifangText(String laifangText) {
        this.laifangText = laifangText;
    }
}
<%@ page contentType="text/html; charset=utf-8" pageEncoding="utf-8" %>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>来访编辑</title>
    <%@ include file="include/head.jsp" %>
</head>

            //不整除，就要在加一页，来显示多余的数据。
            this.totalPage = totalRecord / pageSize + 1;
        }
        //开始索引
        this.startIndex = (pageNum - 1) * pageSize;
        //显示5页，这里自己可以设置，想显示几页就自己通过下面算法修改
        this.start = 1;
        this.end = 5;
        //显示页数的算法
        if (totalPage <= 5) {
            //总页数都小于5，那么end就为总页数的值了。


/**
 * 公告模块的Servlet控制层，负责接收页面传过来的请求参数，根据action参数的值来确定页面要执行的具体操作<br>
 * 而后再调用NoticeService业务层的方法来处理具体的业务，最后将处理完成的结果返回或跳转至相应页面
 */
//@WebServlet("/NoticeServlet")
public class NoticeServlet extends HttpServlet {

    /**
     * 处理Post请求
     *
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */
    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //过滤编码
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
        String action = Util.decode(request, "action");

                <input type="submit" class="btn btn-line btn-primary btn-sm" value="保存">
                <input type="button" class="btn btn-line btn-default btn-sm" value="返回" onclick="javascript:history.back(-1);">
            </div>
        </div>
    </form>
</div>
</body>
<script type="text/javascript">
    //提交之前进行检查，如果return false，则不允许提交
    function check() {
        //根据ID获取值
        if (document.getElementById("username").value.trim().length == 0) {
            alert("用户名不能为空!");

    }
    public String getLaifangReason() {
        return laifangReason;
    }

    public void setLaifangReason(String laifangReason) {
        this.laifangReason = laifangReason;
    }
    public String getLaifangText() {
        return laifangText;
    }

    public void setLaifangText(String laifangText) {
        this.laifangText = laifangText;
    }

 */
//@WebServlet("/UserServlet")
public class UserServlet extends HttpServlet {

    /**
     * 处理Post请求
     *
     * @param request
     * @param response
     * @throws ServletException

    //@Override
    public void update(Notice vo) {
        String sql = "update `t_notice` set `notice_name` = ? ,`notice_text` = ? ,`notice_type` = ? ,`create_date` = ?  where `id` = ?";
        try {
            Connection c = Util.getConnection();
            PreparedStatement ps = c.prepareStatement(sql);
            
            ps.setString(1, vo.getNoticeName());
            ps.setString(2, vo.getNoticeText());
            ps.setString(3, vo.getNoticeType());
            ps.setString(4, vo.getCreateDate());
            ps.setLong(5, vo.getId());
            ps.execute();
            ps.close();
            c.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


        response.sendRedirect("notice_list.jsp");
    }
}
package com.demo.dao.impl;

import com.demo.util.Util;
import com.demo.dao.UserDAO;
import com.demo.vo.User;

import java.io.Serializable;
import java.sql.Connection;

        //  获得红色的随机颜色值
        int red = minColor + random.nextInt(maxColor - minColor);
        //  获得绿色的随机颜色值
        int green = minColor + random.nextInt(maxColor - minColor);
        //  获得蓝色的随机颜色值
        int blue = minColor + random.nextInt(maxColor - minColor);
        return new Color(red, green, blue);
    }
}
package com.demo.servlet;

import com.demo.util.Util;
import com.demo.service.LaifangService;
import com.demo.service.impl.LaifangServiceImpl;
import com.demo.vo.Laifang;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.Serializable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


    public int getTotalPage() {
        return totalPage;
    }

    public void setTotalPage(int totalPage) {
        this.totalPage = totalPage;
    }

    public int getStartIndex() {
        return startIndex;
    }


    }
    /**
     * 测试连接是否成功
     *
     * @param args
     * @throws Exception
     */
    public static void main(String[] args) {
        try {
            Connection conn = Util.getConnection();
            System.out.println("数据库连接成功！！！");
            conn.close();
        } catch (Exception e) {
            e.printStackTrace();

    private int totalPage;    //总页数，通过totalRecord和pageSize计算可以得来
    //开始索引，也就是我们在数据库中要从第几行数据开始拿，有了startIndex和pageSize，
    //就知道了limit语句的两个数据，就能获得每页需要显示的数据了
    private int startIndex;
    //分页显示的页数,比如在页面上显示1，2，3，4，5页，start就为1，end就为5，这个也是算过来的
    private int start;
    private int end;

    private String servlet;//查询时要请求的接口
    private String searchColumn;//待模糊查询的列
    private String keyword;//待模糊查询的关键字


        if ("add".equals(action)) {//增加
            Notice vo = new Notice();
            //取出页面传进来的各个数据，并设置到Notice对象的属性里
            vo.setNoticeName(Util.decode(request, "noticeName"));
            vo.setNoticeText(Util.decode(request, "noticeText"));
            vo.setNoticeType(Util.decode(request, "noticeType"));
            vo.setCreateDate(Util.decode(request, "createDate"));
            NoticeService noticeService = new NoticeServiceImpl();
            //调用Service层增加方法（add），增加记录
            noticeService.add(vo);
            this.redirectList(request, response);
        } else if ("delete".equals(action)) {//删除
            //取出表要删除的公告记录的主键
            long id = Long.parseLong(Util.decode(request, "id"));
            NoticeService noticeService = new NoticeServiceImpl();
            //调用Service层删除方法（delete），将对应的记录删除
            noticeService.delete(id);

            for (User user : list) {
                if (user.getUsername().equals(username) && user.getPassword().equals(password)) {//找到这个管理员了
                    request.getSession().setAttribute("loginUser", user);
                    request.getRequestDispatcher("menu.jsp").forward(request, response);
                    return;
                }
            }
            request.getSession().setAttribute("alert_msg", "错误：用户名或密码错误！");
            request.getRequestDispatcher("login.jsp").forward(request, response);
        } else if ("register".equalsIgnoreCase(action)) {//注册
            String username = Util.decode(request, "username");
            String password = Util.decode(request, "password");
            System.out.println("username=" + username);
            System.out.println("password=" + password);
            UserService userService = new UserServiceImpl();
            Map<String, Object> params = new HashMap();
            params.put("searchColumn", "username");//使用`username`字段进行模糊查询

            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("GBK"), "UTF-8");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("UTF-8"), "ISO-8859-1");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("GB2312"), "ISO-8859-1");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("GBK"), "ISO-8859-1");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("UTF-8"), "GB2312");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("ISO-8859-1"), "GB2312");

    </script>
</head>
<body>
<div class="bg"></div>
<div class="container">
    <div class="line bouncein">
        <div class="xs6 xm4 xs3-move xm4-move">
            <div style="height:150px;"></div>
            <div class="media media-y margin-big-bottom">
            </div>
            <form action="AuthServlet?action=login" method="post" onsubmit="return check()">
                <div class="panel loginbox">
                    <div class="text-center margin-big padding-big-top" style="font-size: 35px;font-weight: 700;color:#000000;text-shadow: 2px 3px #FFFFFF;">访客管理系统</div>
                    <a style="font-size: 24px;color: #269abc;text-decoration: none;padding-left: 140px;">登录</a>&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp<a href="register.jsp" style="font-size: 24px;color:black ;text-decoration: none;">注册</a>
                    <div class="panel-body" style="padding:30px; padding-bottom:10px; padding-top:10px;">

        //  保存minColor最大不会超过255
        if (maxColor > 255)
            maxColor = 255;
        //  获得红色的随机颜色值
        int red = minColor + random.nextInt(maxColor - minColor);
        //  获得绿色的随机颜色值
        int green = minColor + random.nextInt(maxColor - minColor);
        //  获得蓝色的随机颜色值
        int blue = minColor + random.nextInt(maxColor - minColor);
        return new Color(red, green, blue);
    }
}
package com.demo.servlet;

import com.demo.util.Util;
import com.demo.service.LaifangService;
import com.demo.service.impl.LaifangServiceImpl;
import com.demo.vo.Laifang;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

运行环境

Java≥6、Tomcat≥7.0、MySQL≥5.5

开发工具

eclipse/idea/myeclipse/sts等均可配置运行

技术框架

JavaWeb JavaBean JSP MVC MySQL Tomcat JavaScript Bootstrap

基础JSP+Servlet或JSP+SSM(Spring、SpringMVC、MyBatis)框架或JSP+SSM+Maven(pom.xml)框架或SpringBoot…均可

适用

课程设计，大作业，毕业设计，项目练习，学习演示等

功能说明

登录、注册、退出、用户模块、公告模块、来访模块的增删改查管理

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20220319003343

20220319003344

20220319003345

20220319003346

20220319003347

20220319003348

20220319003349

20220319003350

document

↖[获取源码方式]见左侧

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