JAVAEE综合实验--新闻管理系统

新闻管理系统

文章目录

效果图

JAVAEE综合实验--新闻管理系统

一、用户管理模块

1. 登录校验过滤器

@WebFilter("/*")
public class LoginFilter implements Filter {

    @Override
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {

        //0.强制转换
        HttpServletRequest request = (HttpServletRequest) req;

        //1.获取资源请求路径
        String uri = request.getRequestURI();
        //2.判断是否包含登录相关资源路径,要注意排除掉 css/js/图片/验证码等资源
        if(uri.contains("/index.jsp") || uri.contains("/login.jsp") || uri.contains("/loginServlet") || uri.contains("/css/") || uri.contains("/js/") || uri.contains("/fonts/")  || uri.contains("/add.jsp") || uri.contains("/img/")  ){
            //包含,主页不用登陆 用户就是想登录。放行
            chain.doFilter(req, resp);
        }else{
            //不包含,需要验证用户是否登录
            //3.从获取session中获取user
            Object user = request.getSession().getAttribute("user");
            if(user != null){
                //登录了。放行
                chain.doFilter(req, resp);
            }else{
                //没有登录。跳转登录页面
                request.setAttribute("login_msg","您尚未登录,请登录");
                request.getRequestDispatcher("/login.jsp").forward(request,resp);
            }
        }

    }
    @Override
    public void init(FilterConfig config) throws ServletException {

    }
    @Override
    public void destroy() {
    }

}

2. 用户注册

  1. 效果图

JAVAEE综合实验--新闻管理系统

  1. 页面jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <!-- 指定字符集 -->
    <meta charset="utf-8">
    <!-- 使用Edge最新的浏览器的渲染方式 -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <!-- viewport视口:网页可以根据设置的宽度自动进行适配,在浏览器的内部虚拟一个容器,容器的宽度与设备的宽度相同。
    width: 默认宽度与设备的宽度相同
    initial-scale: 初始的缩放比,为1:1 -->
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>用户注册</title>

    <!-- 1. 导入CSS的全局样式 -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <!-- 2. jQuery导入,建议使用1.9以上的版本 -->
    <script src="js/jquery-2.1.0.min.js"></script>
    <!-- 3. 导入bootstrap的js文件 -->
    <script src="js/bootstrap.min.js"></script>
</head>
<body>
<%
    //省份
    String[] provinces = new String[]{
            "河北","山西","辽宁","吉林","黑龙江","江苏","浙江","安徽",
            "福建","江西","山东","河南","湖北","湖南","广东","海南",
            "四川","贵州","云南","陕西","甘肃","青海","*",
            "内蒙古","广西","*","宁夏","*",
            "北京","上海","天津","重庆",
            "香港","澳门"
    };
    request.setAttribute("provinces",provinces);
%>
<div class="container">
    <center><h3>用户注册</h3></center>
    <form action="${pageContext.request.contextPath}/addUserServlet" method="post">

        <div class="form-group">
            <label for="username">用户名:</label>
            <input type="text" class="form-control" id="username" name="username" placeholder="请输入呢称">
        </div>

        <div class="form-group">
            <label for="password">密码:</label>
            <input type="password" class="form-control" id="password" name="password" placeholder="请输入密码">
        </div>

        <div class="form-group">
            <label for="name">姓名:</label>
            <input type="text" class="form-control" id="name" name="name" placeholder="请输入真实姓名">
        </div>

        <div class="form-group">
            <label>性别:</label>
            <input type="radio" name="gender" value="男" checked="checked"/>男
            <input type="radio" name="gender" value="女"/>女
        </div>

        <div class="form-group">
            <label for="age">生日:</label>
            <input type="text" class="form-control" id="age" name="birthday" placeholder="请输入生日,如:1998-09-21">
        </div>

        <div class="form-group">
            <label for="address">籍贯:</label>
            <select name="hometown"  id="address" class="form-control" >
                <c:forEach items="${provinces}" var="province">
                    <option value=${province}>${province}</option>
                </c:forEach>
            </select>
        </div>

        <div class="form-group">
            <label for="hobby">爱好:</label>
            <input type="text" class="form-control"  name="hobby" id="hobby"  placeholder="请输入你的爱好"/>
        </div>

        <div class="form-group">
            <label for="introduction">简介:</label>
            <input type="text" class="form-control" name="introduction" id="introduction" placeholder="让我们多了解你"/>
        </div>

        <div class="form-group" style="text-align: center">
            <input class="btn btn-primary" type="submit" value="提交" />
            <input class="btn btn-default" type="reset" value="重置" />
            <a class="btn btn-default"  href="javascript:history.back(-1)">返回</a>
        </div>
    </form>
</div>
</body>
</html>

  1. sevlet 实现
@WebServlet("/addUserServlet")
public class AddUserServlet extends HttpServlet {

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.设置字符编码
        request.setCharacterEncoding("utf-8");
        //2.获取表单数据
        Map<String, String[]> map = request.getParameterMap();
        //3.数据封装
        User user = new User();
        try {
            BeanUtils.populate(user, map);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
        //3.1补充表单没有的数据
        UserService service = new UserServiceImp();
        //判断是否是第一个注册
        //如果是 则为管理员 否则 为普通成员
        if (service.countUser() > 1) {
            user.setCasting(0);
        } else {
            user.setCasting(1);
        }
        //注册时间设置
        user.setRegisterTime(this.getRegisterTime());
        //4.service完成成员注册
        service.insertUser(user);
        //5.注册成功 转发到登录页面
        response.sendRedirect(request.getContextPath()+"/login.jsp");
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }

    /**
     * 获取注册时间
     * */
    private String getRegisterTime() {
        String format = "yyyy-MM-dd HH:mm:ss";
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
        return simpleDateFormat.format(new Date());
    }


}

3.用户登录

  1. 效果图

JAVAEE综合实验--新闻管理系统

  1. 前端jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>用户登录</title>

    <!-- Bootstrap -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <!-- jQuery  -->
    <script src="js/jquery-2.1.0.min.js"></script>
    <!-- 导入bootstrap的js文件 -->
    <script src="js/bootstrap.min.js"></script>
</head>
<body>

<div class="container" style="width: 400px;">
    <h3 style="text-align: center;">用户登录</h3>

    <form action="${pageContext.request.contextPath}/loginServlet" method="post">

        <div class="form-group">
            <label for="user">用户名:</label>
            <input type="text" name="username" class="form-control" id="user" placeholder="请输入用户名"/>
        </div>

        <div class="form-group">
            <label for="password">密码:</label>
            <input type="password" name="password" class="form-control" id="password" placeholder="请输入密码"/>
        </div>

        <div class="form-group" style="text-align: center;">
            <input class="btn btn btn-primary" type="submit" value="登录">
            <a href="${pageContext.request.contextPath}/add.jsp" class="btn btn btn-primary">注册</a>
        </div>

    </form>

    <!-- 出错显示的信息框 -->
    <div class="alert alert-warning alert-dismissible" role="alert">
        <button type="button" class="close" data-dismiss="alert">
            <span>&times;</span></button>
        <strong>${login_msg}</strong>
    </div>

</div>

</body>
</html>

  1. servlet实现
/**
 * @author iforeverhz
 */
@WebServlet("/loginServlet")
public class LoginServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        this.doGet(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // 1.设置编码
        req.setCharacterEncoding("utf-8");
        //2.获得所有请求参数
        Map<String, String[]> map = req.getParameterMap();
        //3.1封装User对象
        User loginUser = new User();
        try {
            BeanUtils.populate(loginUser, map);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
        //4.调用UserService 查询
        UserService service = new UserServiceImp();
        User user = service.login(loginUser);
        //5.判断用户是否注册 根据情况进行请求转发
        if (user == null) {
            //登录失败
            req.setAttribute("login_msg", "用户名或密码错误!");
            //转发到登录页面
            req.getRequestDispatcher("/login.jsp").forward(req, resp);
        } else if (user.getEntry() == 0) {
            //登录失败 注册但还未审核
            req.setAttribute("login_msg", "您的注册还在审核中,请稍等!");
            //转发到登录页面
            req.getRequestDispatcher("/login.jsp").forward(req, resp);
        } else if (user.getCasting() == 1) {
            //存储数据
            req.getSession().setAttribute("user", user);
            //登录成功 管理员 重复定到管理界面
            //resp.sendRedirect(req.getContextPath() + "/findUserByPageServlet");
            resp.sendRedirect(req.getContextPath() + "/index.jsp");
        } else {
            //存储数据
            req.getSession().setAttribute("user", user);
            //登录成功 返回首页
            resp.sendRedirect(req.getContextPath() + "/index.jsp");
        }
    }
}

4. 用户信息管理界面

  1. 效果图

JAVAEE综合实验--新闻管理系统

  1. 前端jsp
<%@ page import="java.util.List" %>
<%@ page import="com.hky.pojo.User" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <!-- 指定字符集 -->
    <meta charset="utf-8">
    <!-- 使用Edge最新的浏览器的渲染方式 -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <!-- viewport视口:网页可以根据设置的宽度自动进行适配,在浏览器的内部虚拟一个容器,容器的宽度与设备的宽度相同。
    width: 默认宽度与设备的宽度相同
    initial-scale: 初始的缩放比,为1:1 -->
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>用户信息管理系统</title>

    <!-- 1. 导入CSS的全局样式 -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <!-- 2. jQuery导入,建议使用1.9以上的版本 -->
    <script src="js/jquery-2.1.0.min.js"></script>
    <!-- 3. 导入bootstrap的js文件 -->
    <script src="js/bootstrap.min.js"></script>
    <style type="text/css">
        td, th {
            text-align: center;
        }

        .company {
            height: 40px;
            background-color: #ffc900;
            text-align: center; /*水平居中*/
            line-height: 40px; /*垂直居中*/
            size: 8px;
        }

        html, body {
            margin: 0;
            padding: 0;
        }

        .container {
            min-height: 100%;
        }

        main {
            padding-bottom: 100px;
        }

        /* main的padding-bottom值要等于或大于footer的height值 */
        footer {
            height: 100px;
            margin-top: -100px;
        }

        /* margin-top(负值的)高度等于footer的height值 */
    </style>
</head>
<body>

<div class="container">
    <header class="">
        <div class="row">
            <img src="img/top.png" class="img-responsive" style="width: 100% ;height: auto">
        </div>
        <div class="row">
            <!--页眉-->
            <nav class="navbar navbar-inverse">

                <div class="container-fluid">
                    <!-- Brand and toggle get grouped for better mobile display -->
                    <div class="navbar-header">
                        <button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
                                data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                            <span class="sr-only">Toggle navigation</span>
                            <span class="icon-bar"></span>
                            <span class="icon-bar"></span>
                            <span class="icon-bar"></span>
                        </button>
                        <a class="navbar-brand" href="index.jsp">首页</a>
                    </div>

                    <!-- Collect the nav links, forms, and other content for toggling -->
                    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">

                        <ul class="nav navbar-nav">
                            <li class="active"><a href="${pageContext.request.contextPath}/findUserByPageServlet">用户管理
                                <span class="sr-only">(current)</span></a></li>
                            <li><a href="${pageContext.request.contextPath}/findNewsByPageServlet">新闻管理</a></li>
                        </ul>

                        <ul class="nav navbar-nav navbar-right">
                            <li class="dropdown">
                                <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button"
                                   aria-haspopup="true"
                                   aria-expanded="false">当前用户:${pageContext.session.getAttribute("user").username} <span
                                        class="caret"></span></a>
                                <ul class="dropdown-menu">
                                    <li><a href="${pageContext.request.contextPath}/logoutServlet">退出登录</a></li>
                                    <li role="separator" class="divider"></li>
                                    <li>
                                        <a href="${pageContext.request.contextPath}/findUserServlet?id=${user.id}">修改信息</a>
                                    </li>
                                    <li role="separator" class="divider"></li>
                                </ul>
                            </li>
                            <li><a class="navbar-brand " href="${pageContext.request.contextPath}/login.jsp">登录</a></li>
                            <li><a class="navbar-brand " href="${pageContext.request.contextPath}/add.jsp">注册</a></li>

                        </ul>
                    </div><!-- /.navbar-collapse -->
                </div><!-- /.container-fluid -->
            </nav>
        </div>
    </header>
    <main>
        <div class="">
            <h3 style="text-align: center">用户信息列表</h3>

            <div style="float: left">
                <form class="form-inline"
                      action="${pageContext.request.contextPath}/findUserByPageServlet?currentPage=${ pb.currentPage -1}&rows=8"
                      method="post">

                    <div class="form-group">
                        <label for="exampleInputName2">用户名</label>
                        <input type="text" class="form-control" name="username" value="${condition.username[0]}"
                               id="exampleInputName2">
                    </div>
                    <div class="form-group">
                        <label for="exampleInputEmail2">籍贯</label>
                        <input type="text" class="form-control" name="hometown" value="${condition.hometown[0]}"
                               id="exampleInputEmail2">
                    </div>
                    <div class="form-group">
                        <label for="exampleInputEmail">性别</label>
                        <input type="text" class="form-control" name="gender" value="${condition.gender[0]}"
                               id="exampleInputEmail">
                    </div>
                    <button type="submit" class="btn btn-default">查询</button>
                </form>

            </div>

            <%--            <div style="float: right; margin: 5px">--%>
            <%--                <a class="btn btn-primary" href="${pageContext.request.contextPath}/add.jsp">添加联系人</a>--%>
            <%--            </div>--%>

            <table border="1" class="table table-bordered table-hover">

                <tr class="success">
                    <th>编号</th>
                    <th>用户名</th>
                    <th>密码</th>
                    <th>姓名</th>
                    <th>性别</th>
                    <th>出生日期</th>
                    <th>籍贯</th>
                    <th>爱好</th>
                    <th>简介</th>
                    <th>注册时间</th>
                    <th>是否审核</th>
                    <th>操作</th>
                </tr>

                <c:forEach items="${pb.list}" var="user" varStatus="s">
                    <tr>
                        <td>${s.count}</td>
                        <td>${user.username}</td>
                        <td>${user.password}</td>
                        <td>${user.name}</td>
                        <td>${user.gender}</td>
                        <td>${user.birthday}</td>
                        <td>${user.hometown}</td>
                        <td>${user.hobby}</td>
                        <td>${user.introduction}</td>
                        <td>${user.registerTime}</td>
                        <td>${user.entry == 0 ? "否":"是"} </td>
                        <td>
                            <a class="btn btn-default btn-sm"
                               href="${pageContext.request.contextPath}/findUserServlet?id=${user.id}">修改</a>&nbsp;
                            <a class="btn btn-default btn-sm"
                               href="${pageContext.request.contextPath}/delUserServlet?id=${user.id}">删除</a>
                            <a class="btn btn-default btn-sm"
                               href="${pageContext.request.contextPath}/entryUserServlet?id=${user.id}">审核通过</a>
                        </td>
                    </tr>
                </c:forEach>

            </table>


            <div>
                <nav aria-label="Page navigation">
                    <ul class="pagination">
                        <c:if test="${pb.currentPage == 1}">
                            <li class="disabled">
                                <a href="${pageContext.request.contextPath}/findUserByPageServlet?currentPage=${ pb.currentPage -1}&rows=8&username=${condition.username[0]}&hometown=${condition.hometown[0]}&gender=${condition.gender[0]}"
                                   aria-label="Previous">
                                    <span aria-hidden="true">&laquo;</span>
                                </a>
                            </li>
                        </c:if>
                        <c:if test="${pb.currentPage != 1}">
                            <li>
                                <a href="${pageContext.request.contextPath}/findUserByPageServlet?currentPage=${ pb.currentPage -1}&rows=8&username=${condition.username[0]}&hometown=${condition.hometown[0]}&gender=${condition.gender[0]}"
                                   aria-label="Previous">
                                    <span aria-hidden="true">&laquo;</span>
                                </a>
                            </li>
                        </c:if>

                        <c:forEach begin="1" end="${pb.totalPage}" var="i">
                            <c:if test="${pb.currentPage == i}">
                                <li class="active"><a
                                        href="${pageContext.request.contextPath}/findUserByPageServlet?currentPage=${i}&rows=8&username=${condition.username[0]}&hometown=${condition.hometown[0]}&gender=${condition.gender[0]}">${i}</a>
                                </li>
                            </c:if>

                            <c:if test="${ pb.currentPage != i}">
                                <li>
                                    <a href="${pageContext.request.contextPath}/findUserByPageServlet?currentPage=${i}&rows=8&username=${condition.username[0]}&hometown=${condition.hometown[0]}&gender=${condition.gender[0]}">${i}</a>
                                </li>
                            </c:if>
                        </c:forEach>

                        <c:if test="${pb.currentPage == pb.totalPage }">
                            <li class="disabled">
                                <a href="${pageContext.request.contextPath}/findUserByPageServlet?currentPage=${ pb.currentPage +1}&rows=8&username=${condition.username[0]}&hometown=${condition.hometown[0]}&gender=${condition.gender[0]}"
                                   aria-label="Next">
                                    <span aria-hidden="true">&raquo;</span>
                                </a>
                            </li>
                        </c:if>

                        <c:if test="${pb.currentPage != pb.totalPage }">
                            <li>
                                <a href="${pageContext.request.contextPath}/findUserByPageServlet?currentPage=${ pb.currentPage +1}&rows=8&username=${condition.username[0]}&hometown=${condition.hometown[0]}&gender=${condition.gender[0]}"
                                   aria-label="Next">
                                    <span aria-hidden="true">&raquo;</span>
                                </a>
                            </li>
                        </c:if>

                        <span style="font-size: 25px; margin: 15px">
                    共${pb.totalCount}条记录,共${pb.totalPage}页
                </span>

                    </ul>

                </nav>
            </div>

        </div>
    </main>
</div>


<!--页脚部分-->
<footer class="container">
    <div class="row company">
        Copyright @2018-2022 Iforeverhz 在线新闻系统 版权所有 | 联系热线:408888888
    </div>
</footer>

</body>
</html>

5. 用户信息修改

思路:管理页面点击修改按钮->后台根据用户id查询信息(findUserServlet),转发到用户信息更新页面(update.jsp),数据回显->修改信息,点击提交(updateUserServlet)

  1. 效果图

JAVAEE综合实验--新闻管理系统

  1. servlet设计
@WebServlet("/findUserServlet")
public class FindUserServlet extends HttpServlet {

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.获取id
        String id = request.getParameter("id");
        //2.调用service
        UserService service = new UserServiceImp();
        User user = service.findUser(id);
        //3.转发到update.jsp
        request.setAttribute("user", user);
        request.getRequestDispatcher("/update.jsp").forward(request,response);

    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}

@WebServlet("/updateUserServlet")
public class UpdateUserServlet extends HttpServlet {

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.设置字符编码
        request.setCharacterEncoding("utf-8");
        //2.疯转表单对象
        Map<String, String[]> map = request.getParameterMap();

        User user = new User();
        try {
            BeanUtils.populate(user, map);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
        //3.调用修改用户服务 修改用户信息
        UserService service = new UserServiceImp();
        service.updateUser(user);
        //4.重定向 用户管理界面
        response.sendRedirect(request.getContextPath() + "/findUserByPageServlet");
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}

6. 用户删除

@WebServlet("/delUserServlet")
public class DelUserServlet extends HttpServlet {

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.获取删除用户的id
        String id = request.getParameter("id");
        //2.调用service 删除user
        UserService service = new UserServiceImp();
        service.delUserById(id);
        //3.重定向到list.jsp
        response.sendRedirect(request.getContextPath()+"/findUserByPageServlet");
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}

7. 用户审核

@WebServlet("/entryUserServlet")
public class EntryUserServlet extends HttpServlet {

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.获取删除用户的id
        String id = request.getParameter("id");
        //2.调用service 删除user
        UserService service = new UserServiceImp();
        service.passEntry(id);
        //3.重定向到list.jsp
        response.sendRedirect(request.getContextPath() + "/findUserByPageServlet");
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}


8. 用户相关service

  1. 接口定
/**
 * @author iforeverhz
 */
public interface UserService {
    /**
     * 查找全部用户信息
     *
     * @return List<User>
     */
    public List<User> findAll();

    /**
     * 用户登录校验
     *
     * @param user user对象
     * @return User
     */
    public User login(User user);

    /**
     * 用户新增
     *
     * @param user user对象
     */
    public void insertUser(User user);

    /**
     * 查询表中用户的的数量
     *
     * @return int
     */
    public int countUser();

    /**
     * 根据id删除用户
     *
     * @param id id
     */
    public void delUserById(String id);

    /**
     * 查询用户
     *
     * @param id
     * @return User
     */
    public User findUser(String id);

    /**
     * 更新用户信息
     *
     * @param user
     */
    public void updateUser(User user);

    /**
     * 分页条件查询
     *
     * @param currentPage
     * @param rows
     * @param condition
     * @return
     */
    public PageBean<User> findUserByPage(String currentPage, String rows, Map<String, String[]> condition);

    /**
     * 管理员审核其他用户
     * @param id
     */
    public void passEntry(String id);

}


  1. 实现类
/**
 * @author iforeverhz
 */
public class UserServiceImp implements UserService {
    UserDao userDao = new UserDaoImp();

    @Override
    public List<User> findAll() {
        return userDao.findAll();
    }

    @Override
    public User login(User user) {
        return userDao.findUserByUsernameAndPassword(user.getUsername(), user.getPassword());
    }

    @Override
    public void insertUser(User user) {
        userDao.insertUser(user);
    }

    @Override
    public int countUser() {
        return userDao.countUser();
    }

    @Override
    public void delUserById(String id) {
        userDao.delUserById(Integer.parseInt(id));
    }

    @Override
    public User findUser(String id) {
        return userDao.findUserById(Integer.parseInt(id));
    }

    @Override
    public void updateUser(User user) {
        userDao.update(user);
    }

    @Override
    public PageBean<User> findUserByPage(String _currentPage, String _rows, Map<String, String[]> condition) {
        //1.创建PageBean
        PageBean<User> pageBean = new PageBean<>();
        //2.数据类型转换
        int currentPage = Integer.parseInt(_currentPage);
        int rows = Integer.parseInt(_rows);
        //3.查询数据总数
        int totalCount = userDao.findTotalCount(condition);
        pageBean.setTotalCount(totalCount);
        //4.总页码计算
        int totalPage = totalCount % rows == 0 ? (totalCount / rows) : (totalCount / rows + 1);
        pageBean.setTotalPage(totalPage);
        //5.对当前页数进行限制
        if (currentPage <= 0) {
            currentPage = 1;
        }else if (currentPage >= totalPage) {
            currentPage = totalPage;
        }
        pageBean.setCurrentPage(currentPage);
        pageBean.setRows(rows);
        //6.分页查询数据
        int start = (currentPage - 1) * rows;
        List<User> users = userDao.findByPage(start, rows, condition);
        pageBean.setList(users);
        return pageBean;
    }

    @Override
    public void passEntry(String id) {
        if (id != null ||"".equals(id)){
            int uid = Integer.parseInt(id);
            userDao.updateEntry(uid);
        }

    }
}


9. 用户相关Dao

  1. 接口定义
public interface UserDao {
    /**
     * 查询所有用户
     *
     * @return User对象
     */
    public List<User> findAll();

    /**
     * 通过用户名和密码查询用户
     *
     * @param username 用户名
     * @param password 用户密码
     * @return User对象
     */
    public User findUserByUsernameAndPassword(String username, String password);

    /**
     * 统计User表用户数量
     *
     * @return int 用户数量
     */
    public int countUser();

    /**
     * 用户注册
     *
     * @return 无
     */
    public void insertUser(User user);

    /**
     * 根据id删除用户
     *
     * @param id
     */
    public void delUserById(int id);

    /**
     * 根据id查找用户
     *
     * @param id
     * @return User
     */
    public User findUserById(int id);

    /**
     * @param user
     */
    public void update(User user);

    /**
     * 分页查询总数
     *
     * @param condition
     * @return
     */
    public int findTotalCount(Map<String, String[]> condition);

    /**
     * 分页查询数据
     *
     * @param start
     * @param rows
     * @param condition
     * @return
     */
    public List<User> findByPage(int start, int rows, Map<String, String[]> condition);

    /**
     * 修改 entry值
     * @param uid
     */
    public void updateEntry(int uid);
}


  1. 接口实现
public class UserDaoImp implements UserDao {

    private JdbcTemplate template = new JdbcTemplate(JDBCUtils.getDataSource());


    @Override
    public List<User> findAll() {
        String sql = "select * from `user`";
        List<User> users = template.query(sql, new BeanPropertyRowMapper<>(User.class));
        return users;
    }

    @Override
    public User findUserByUsernameAndPassword(String username, String password) {
        try {
            String sql = "select * from `user` where username = ? and password = ? ";
            User user = template.queryForObject(sql, new BeanPropertyRowMapper<>(User.class), username, password);
            return user;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    public int countUser() {
        String sql = "select count(id) from `user`";

        Integer count = template.queryForObject(sql, Integer.class);

        return  count;
    }

    @Override
    public void insertUser(User user) {

        String sql = "insert into `user` values(?,?,?,?,?,?,?,?,?,?,?,?)";

        Object[] obj = new Object[]{
                null, user.getUsername(), user.getPassword(), user.getName(), user.getGender(), user.getBirthday(), user.getHometown(),
                user.getHobby(), user.getIntroduction(), user.getCasting(), user.getRegisterTime(), 0
        };
        int i = template.update(sql, obj);
    }

    @Override
    public void delUserById(int id) {
        String sql = "delete from `user` where id = ? ";
        template.update(sql, id);
    }

    @Override
    public User findUserById(int id) {
        String sql = "select * from `user` where id =?";
        User user = template.queryForObject(sql, new BeanPropertyRowMapper<>(User.class), id);
        if (user != null) {
            return user;
        } else {
            return null;
        }
    }

    @Override
    public void update(User user) {
        String sql = "update `user` set `password` = ? ,`name` = ?, gender = ? ,birthday = ?,hometown = ?, hobby = ? ,introduction = ? where id = ?";
        Object[] args = new Object[]{
                user.getPassword(), user.getName(), user.getGender(), user.getBirthday(),
                user.getHometown(), user.getHobby(), user.getIntroduction(), user.getId()
        };
        template.update(sql, args);
    }

    @Override
    public int findTotalCount(Map<String, String[]> condition) {
        //1.定义模班
        String sql = "select count(*) from `user` where 1 = 1 ";
        //2.动态拼接sql
        StringBuilder stringBuilder = new StringBuilder(sql);
        //3.定义参数集合
        List<Object> params = new ArrayList<>();
        //4.遍历map
        Set<String> keySet = condition.keySet();
        for (String key : keySet) {
            //排除分页条件参数
            if ("currentPage".equals(key) || "rows".equals(key)) {
                continue;
            }
            //获得value
            String value = condition.get(key)[0];
            if (value != null || !"".equals(value)) {
                //查询条件有值
                stringBuilder.append(" and " + key + " like ? ");
                //占位符的值
                params.add("%" + value + "%");
            }
        }
        return template.queryForObject(stringBuilder.toString(), Integer.class, params.toArray());
    }


    @Override
    public List<User> findByPage(int start, int rows, Map<String, String[]> condition) {
        //1.sql模版
        String sql = "select * from `user` where 1 = 1 ";
        //2.动态拼接sql
        StringBuilder stringBuilder = new StringBuilder(sql);
        //3.定义参数集合
        List<Object> params = new ArrayList<>();
        //4.遍历map
        Set<String> keySet = condition.keySet();
        for (String key : keySet) {
            //排除分页条件参数
            if ("currentPage".equals(key) || "rows".equals(key)) {
                continue;
            }
            //获得value
            String value = condition.get(key)[0];
            if (value != null || !"".equals(value)) {
                //查询条件有值
                stringBuilder.append(" and " + key + " like ? ");
                //占位符的值
                params.add("%" + value + "%");
            }
        }
        //5.添加分页查询条件
        stringBuilder.append(" limit ?,?");
        //6.添加分页查询参数
        params.add(start);
        params.add(rows);

        List<User> users = template.query(stringBuilder.toString(), new BeanPropertyRowMapper<>(User.class), params.toArray());

        return users;
    }

    @Override
    public void updateEntry(int uid) {
        String sql = "update `user` set  entry = ? where id = ?";
        template.update(sql, 1, uid);
    }
}


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