项目第四天
9-会员管理
1-会员管理Dao层
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创建
MemberTypeDao类，放在dao包下：public class MemberTypeDao { QueryRunner runner = new QueryRunner(); // 查询所有会员类型 public List<MemberType> getAll() throws SQLException { Connection conn = DBHelper.getConnection(); String sql = "select * from membertype"; List<MemberType> memberTypes = runner.query(conn, sql, new BeanListHandler<MemberType>(MemberType.class)); conn.close(); return memberTypes; } // 根据会员编号查询一个会员信息 public MemberType getById(long id) throws SQLException{ Connection conn = DBHelper.getConnection(); String sql = "select * from membertype where id = ?"; MemberType memberType = runner.query(conn, sql, new BeanHandler<MemberType>(MemberType.class), id); conn.close(); return memberType; } } -
创建
MemberDao类，放在dao包下：public class MemberDao { QueryRunner runner = new QueryRunner(); // 添加会员 public int add(String name, String pwd, long typeId, double balance, String tel, String idNumber) throws SQLException { Connection conn = DBHelper.getConnection(); String sql = "insert into member(`name`, pwd, typeId, balance, regdate, tel, idNumber) values(?, ?, ?, ?, CURRENT_DATE, ?, ?)"; int count = runner.update(conn, sql, name, pwd, typeId, balance, tel, idNumber); DBHelper.close(conn); return count; } //修改会员 public int modify(long id, String name, String pwd, long typeId, double balance, String tel, String idNumber) throws SQLException { Connection conn = DBHelper.getConnection(); String sql = "update member set `name`=?, pwd=?, typeId=?, balance=?, tel=?,idNumber=? where id=?"; int count = runner.update(conn, sql, name, pwd, typeId, balance, tel, idNumber, id); DBHelper.close(conn); return count; } // 删除会员 public int remove(long id) throws SQLException { Connection conn = DBHelper.getConnection(); String sql = "delete from member where id = ?"; int count = runner.update(conn, sql, id); DBHelper.close(conn); return count; } // 会员充值 public int modifyBalance(String idNumber, double amount) throws SQLException { Connection conn = DBHelper.getConnection(); String sql = "update member set balance = balance + ? where idNumber = ?"; int count = runner.update(conn, sql, amount, idNumber); DBHelper.close(conn); return count; } // 修改押金 public int modifyBalance (long id, double amount) throws SQLException { Connection conn = DBHelper.getConnection(); String sql = "update member set balance = balance + ? where id = ?"; int count = runner.update(conn, sql, amount, id); DBHelper.close(conn); return count; } // 查询所有会员 public List<Member> getAll() throws SQLException { Connection conn = DBHelper.getConnection(); String sql = "select id, `name`, pwd, typeId, balance, regdate, tel, idNumber from member"; List<Member> members = runner.query(conn, sql, new BeanListHandler<Member>(Member.class)); DBHelper.close(conn); return members; } // 根据会员编号差会员信息 public Member getById(long id) throws SQLException { Connection conn = DBHelper.getConnection(); String sql = "select id, `name`, pwd, typeId, balance, regdate, tel, idNumber from member where id = ?"; Member member = runner.query(conn, sql, new BeanHandler<Member>(Member.class), id); DBHelper.close(conn); return member; } //根据会员身份证查会员信息 public Member getByIdNumber(String idNumber) throws SQLException { Connection conn = DBHelper.getConnection(); String sql = "select id, `name`, pwd, typeId, balance, regdate, tel, idNumber, from member where id = ?"; Member member = runner.query(conn, sql, new BeanHandler<Member>(Member.class), idNumber); DBHelper.close(conn); return member; } //判断会员编号是否存在Record中(作为外键 ） public boolean exits(long id) throws SQLException { Connection conn = DBHelper.getConnection(); String sql = "select count(id) from record where memberId = ?"; Number number = runner.query(conn, sql, new ScalarHandler<>(), id); DBHelper.close(conn); return number.intValue() > 0 ? true : false; } }
2-会员管理Server层
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创建
MemberTypeBiz类，放在biz包下：public class MemberTypeBiz { MemberTypeDao memberTypeDao = new MemberTypeDao(); // 查询所有会员类型 public List<MemberType> getAll() { try { return memberTypeDao.getAll(); } catch (SQLException e) { e.printStackTrace(); return null; } } // 根据会员编号查询一个会员信息 public MemberType getById(long id) { MemberType memberType = null; try { memberType = memberTypeDao.getById(id); } catch (SQLException e) { e.printStackTrace(); } return memberType; } } -
创建
MemberBiz类，放在biz包下：public class MemberBiz { MemberDao memberDao = new MemberDao(); MemberTypeDao typeDao = new MemberTypeDao(); public int add(String name, String pwd, long typeId, double balance, String tel, String idNumber) { int count = 0; try { count = memberDao.add(name, pwd, typeId, balance, tel, idNumber); } catch (SQLException e) { e.printStackTrace(); } return count; } public int modify(long id, String name, String pwd, long typeId, double balance, String tel, String idNumber) { int count = 0; try { count = memberDao.modify(id, name, pwd, typeId, balance, tel, idNumber); } catch (SQLException e) { e.printStackTrace(); } return count; } public int remove(long id) throws Exception { Member member = getById(id); if (member.getBalance() > 0) { throw new Exception("此会员消费金额大于0，删除失败"); } if (memberDao.exits(id)) { throw new Exception("此会员还有在借阅的书籍，删除失败"); } int count = 0; try { count = memberDao.remove(id); } catch (SQLException e) { e.printStackTrace(); } return count; } public int modifyBalance(String idNumber, double amount) { int count = 0; try { count = memberDao.modifyBalance(idNumber, amount); } catch (SQLException e) { e.printStackTrace(); } return count; } public List<Member> getAll() { MemberTypeDao typeDao = new MemberTypeDao(); List<Member> members = null; try { members = memberDao.getAll(); for (Member member: members) { MemberType type = typeDao.getById(member.getTypeId()); member.setType(type); } } catch (SQLException e) { e.printStackTrace(); } return members; } public Member getById(long id) { Member member = null; try { member = memberDao.getById(id); MemberType memberType = typeDao.getById(member.getTypeId()); member.setType(memberType); } catch (SQLException e) { e.printStackTrace(); } return member; } public Member getByIdNumber(String idNumber) { Member member = null; try { member = memberDao.getByIdNumber(idNumber); MemberType memberType = typeDao.getById(member.getTypeId()); member.setType(memberType); } catch (SQLException e) { e.printStackTrace(); } return member; } }
3-实现会员查询功能
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添加
MemberServlet类，放在action包下。@WebServlet("/member.let") public class MemberServlet extends HttpServlet { MemberTypeBiz memberTypeBiz = new MemberTypeBiz(); MemberBiz memberBiz = new MemberBiz(); @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doPost(req, resp); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { req.setCharacterEncoding("utf-8"); resp.setContentType("text/html;charset=utf-8"); PrintWriter out = resp.getWriter(); HttpSession session = req.getSession(); if (session.getAttribute("user") == null) { out.println(""); return; } String type = req.getParameter("type"); switch (type) { case "query": List<Member> memberList = memberBiz.getAll(); req.setAttribute("memberList", memberList); req.getRequestDispatcher("mem_list.jsp").forward(req, resp); break; default: resp.sendError(404, "请求的地址不存在"); } } } -
修改
left.jsp部分代码- 会员开卡
- 会员管理
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把
mem_list.html文件转换成mem_list.jsp文件 -
修改
mem_list.jsp文件-
引入JSTL标准库
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> -
修改文件的from
<table width="100%" class="cont tr_color"> <tr> <th>编号th> <th>会员名称th> <th>联系电话th> <th>会员类型th> <th>余额th> <th>注册时间th> <th>身份证号th> <th>操作th> tr> <c:forEach items="${memberList}" var="m"> <tr align="center" class="d"> <td>${m.id}td> <td>${m.name}td> <td>${m.tel}td> <td>${m.type.name}td> <td>${m.balance}td> <td>${m.regdate}td> <td>${m.idNumber}td> <td> <a onclick="return confirm('确认修改');" href="member.let?type=modifypre&id=${m.id}">修改a> <a onclick="return confirm('确认删除');" href="member.let?type=remove&id=${m.id}">删除a> td> tr> c:forEach> table>
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4-实现会员开卡功能
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在
MemberServlet的switch添加如下代码case "addpre": List<MemberType> memberTypes = memberTypeBiz.getAll(); req.setAttribute("memberTypes", memberTypes); req.getRequestDispatcher("mem_add.jsp").forward(req, resp); break; -
把
mem_add.html文件转换成mem_add.jsp文件 -
修改
mem_add.jsp文件下面显示的代码<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <script src="Js/jquery-3.3.1.min.js">script> <script language="JavaScript"> $(function () { $(":radio").each(function(index, element) { $(this).click(function() { var value = $(this).next().val(); $("#balance").val(value) }) }) }) script> <form action="member.let?type=add" method="post"> <table width="100%" class="cont"> <tr> <td width="10%">用户名：td> <td width="20%"><input class="text" type="text" name="name" value="" required/>td> tr> <tr> <td>密码：td> <td><input class="text" type="password" name="pwd" value="" required />td> <td>td> tr> <tr> <td>确认密码：td> <td><input class="text" type="password" name="pwd2" value="" required/>td> tr> <tr> <td>会员类型td> <td> <c:forEach items="${memberTypes}" var="mt"> <c:if test="${mt.id==1}" > <input type="radio" name="memberType" value="${mt.id}" checked/> ${mt.name} <input type="hidden" value="${mt.recharge}"> c:if> <c:if test="${mt.id!=1}" > <input type="radio" name="memberType" value="${mt.id}" /> ${mt.name} <input type="hidden" value="${mt.recharge}"> c:if> c:forEach> td> tr> <tr> <td>充值金额td> <td> <input class="text" type="number" name="balance" value="100" id="balance" required/> td> tr> table> form> -
在
MemberServlet的switch添加如下代码case "add": String name = req.getParameter("name"); String pwd = req.getParameter("pwd"); long memberTypeId = Long.parseLong(req.getParameter("memberType")); double balance = Double.parseDouble(req.getParameter("balance")); String tel = req.getParameter("tel"); String idNumber = req.getParameter("idNumber"); int count = memberBiz.add(name, pwd, memberTypeId, balance, tel, idNumber); if (count > 0) { out.println(""); } else { out.println(""); } break;
5-实现会员删除功能
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在
MemberServlet的switch添加如下代码case "remove": long memId = Long.parseLong(req.getParameter("id")); try { int count2 = memberBiz.remove(memId); if (count2 > 0) { out.println(""); } else { out.println(""); } } catch (Exception e) { e.printStackTrace(); out.println("alert('"+e.getMessage()+"');location.href='member.let?type=query';"); } break;
6-实现会员修改功能
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在
MemberServlet的switch添加如下代码case "modifypre": long id = Long.parseLong(req.getParameter("id")); Member member = memberBiz.getById(id); List<MemberType> memberTypes2 = memberTypeBiz.getAll(); req.setAttribute("member", member); req.setAttribute("memberTypes", memberTypes2); req.getRequestDispatcher("mem_modify.jsp").forward(req, resp); break; -
把
mem_modify.html文件转换成mem_modify.jsp文件 -
修改
mem_modify.jsp文件下面显示的代码<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <script src="Js/jquery-3.3.1.min.js">script> <script language="JavaScript"> $(function () { $(":radio").each(function(index, element) { $(this).click(function() { var value = $(this).next().val(); $("#balance").val(value) }) }) }) script> <form action="member.let?type=modify" method="post"> <table width="100%" class="cont"> <tr> <td width="10%">用户编号：td> <td width="20%"><input class="text" type="text" name="id" value="${member.id}" readonly/>td> tr> <tr> <td width="10%">用户名：td> <td width="20%"><input class="text" type="text" name="name" value="${member.name}" readonly/>td> tr> <tr> <td>密码：td> <td><input class="text" type="password" name="pwd" value="${member.pwd}" required/>td>> tr> <tr> <td>会员类型td> <td> <c:forEach items="${memberTypes}" var="mt"> <c:if test="${mt.id==member.typeId}"> <input type="radio" name="memberType" value="${mt.id}" checked/>${mt.name} <input type="hidden" value="${mt.recharge}"> c:if> <c:if test="${mt.id!=member.typeId}"> <input type="radio" name="memberType" value="${mt.id}"/>${mt.name} <input type="hidden" value="${mt.recharge}"> c:if> c:forEach> td> tr> tr> <tr> <td>充值金额td> <td> <input class="text" id="balance" type="number" name="balance" value="${member.balance}" readonly/> td> tr> <tr> <td>电话号码td> <td> <input class="text" type="tel" name="tel" value="${member.tel}" required /> td> tr> <tr> <td>身份证号td> <td> <input class="text" type="text" name="idNumber" value="${member.idNumber}" required /> td> tr> table> form> -
在
MemberServlet的switch添加如下代码case "modify": long memberId = Long.parseLong(req.getParameter("id")); String name2 = req.getParameter("name"); String pwd2 = req.getParameter("pwd"); long memberTypeId2 = Long.parseLong(req.getParameter("memberType")); double balance2 = Double.parseDouble(req.getParameter("balance")); String tel2 = req.getParameter("tel"); String idNumber2 = req.getParameter("idNumber"); int count3 = memberBiz.modify(memberId, name2, pwd2, memberTypeId2, balance2, tel2, idNumber2); if (count3 > 0) { out.println(""); } else { out.println(""); } break;
7-实现会员充值功能
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在
MemberServlet的switch添加如下代码case "modifyrecharge": String idNumber3 = req.getParameter("idNumber"); double amount = Double.parseDouble(req.getParameter("amount")); int count4 = memberBiz.modifyBalance(idNumber3, amount); if (count4 > 0) { out.println(""); } else { out.println(""); } break; -
把
mem_recharge.html文件转换成mem_recharge.jsp文件 -
修改
mem_recharge.jsp文件下面显示的代码<form action="member.let?type=modifyrecharge" method="post">