网上书城（登录、注册、权限管理）

- 前言
登录
注册
权限管理

前言

网上书城包括前台、后台
网上书城前台内容：
1 、首页
2、用户注册/登陆
3、书籍查询
4 、购物车
5、订单管理
5.1、订单新增
5.2 、订单查询
5.3、撤单
5.4、签收
网上书城后台内容：
1 、管理员登陆
2、书籍类别管理
3 、书籍管理
3.1、新增
3.2 、未上架
3.2.1、删除
3.2.2 、修改
3.2.3、上传图片(只保存图片名)
3.2.4 、上架
4、订单管理

<%@ 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>登录界面</title><link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/static/css/bootstrap.min.css" /><style>.form-signin{top: 100px;/* 相对定位 */position: relative;width: 600px;left: 50%;margin-left: -300px;}.form-label-group{margin-top: 20px;}</style>
</head>
<body class="text-center">
<form class="form-signin" action="${pageContext.request.contextPath}/user.action?methodName=login" method="post"><div class="text-center mb-4"><img class="mb-4" src="/docs/assets/brand/bootstrap-solid.svg" alt="" width="72" height="72"><h1 class="h3 mb-3 font-weight-normal">登录界面</h1></div><div class="form-label-group"><input type="text" id="name" name="name" class="form-control" placeholder="请输入用户名" required autofocus></div><div class="form-label-group"><input type="password" id="pwd" name="pwd" class="form-control" placeholder="请输入密码" required></div><div class="checkbox mb-3"><label><input type="checkbox" value="remember-me"> Remember me</label></div><button class="btn btn-lg btn-primary btn-block" type="submit">登录</button><p class="mt-5 mb-3 text-muted text-center">&copy; 2017-2020</p></form><script src="${pageContext.request.contextPath }/static/js/bootstrap.min.js"></script>
</body>
</html>

实体类（User）：

package com.dailang.entity;/*** 用户表* @author tuzi** 2020年7月1日 上午9:51:19*/
public class User {private long id;private String name;private String pwd;private int type;public long getId() {return id;}public void setId(long id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPwd() {return pwd;}public void setPwd(String pwd) {this.pwd = pwd;}public int getType() {return type;}public void setType(int type) {this.type = type;}public User() {super();}public User(long id, String name, String pwd, int type) {super();this.id = id;this.name = name;this.pwd = pwd;this.type = type;}@Overridepublic String toString() {return "User [id=" + id + ", name=" + name + ", pwd=" + pwd + ", type=" + type + "]";}}

UserDao（如果名称和密码不为空，就拼接起来）:

public User login(User user,PageBean pageBean) throws Exception{String sql = "SELECT * from t_easyui_user where true ";if(StringUtils.isNotBlank(user.getName())) {sql +=" and name = '"+user.getName()+"'";}if(StringUtils.isNotBlank(user.getPwd())) {sql +=" and pwd = '"+user.getPwd()+"'";}List<User> list = super.executeQuery(sql, User.class, null);if(list.size() == 0) {return null;}return list.get(0);}

UserAction（如果用户名或密码错误，则重新登录，正确就到首页）:

public String login(HttpServletRequest req,HttpServletResponse resp) {try {User curentUser = this.userDao.login(this.user, null);if(curentUser==null) {return "login";}req.getSession().setAttribute("curentUser", curentUser);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return "mains";}

注册

效果图

代码：
UserDao：

public int register(User user) throws Exception {String sql = "insert into t_easyui_user(name,pwd) values(?,?)";return super.executeUpdate(sql, user, new String[] {"name","pwd"});}

UserAction（返回影响行数大于0则注册成功，跳转到登录页面，否则注册失败）：

public String register(HttpServletRequest req,HttpServletResponse resp) {try {int register = this.userDao.register(user);if(register>0) {return "login";}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return "register";}

mvc.xml:

<action path="/user" type="com.dailang.web.UserAction"><forward name="login" path="/login.jsp" redirect="false" /><forward name="mains" path="/bg/main.jsp" redirect="false" /></action>

权限管理

老板界面效果图：

用户界面效果图：

代码：
接前面博客的后续，博客连接如下：
datagrid之增删改
datagrid之查询
tab选项卡实现
tree组件实现
在登录的时候判断，如果是老板的账号，就进入老板后台的界面，如果是用户的账号，就进入用户后台的界面
首先先看一下用户表、用户角色权限中间表、权限表三张表
用户表

用户角色权限中间表

权限表

三张表之间的关系如下图

PermissionDao

public List<Permission> listPermission(String pids,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{String sql = "select * from t_easyui_permission where id in ("+pids+")";return super.executeQuery(sql, Permission.class, pageBean);}public List<TreeVo<Permission>> topNodePermission(String pids,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{List<Permission> list = this.listPermission(pids, pageBean);
//      通过工具类完成指定格式的输出List<TreeVo<Permission>> nodes = new ArrayList<TreeVo<Permission>>();
//      Permission的格式不满足easyui的tree组件的展现的数据格式TreeVo treeVo = null;for (Permission p : list) {treeVo = new TreeVo<>();treeVo.setId(p.getId()+"");treeVo.setText(p.getName());treeVo.setParentId(p.getPid()+"");Map<String, Object> attributes = new HashMap<String, Object>();attributes.put("self", p);treeVo.setAttributes(attributes);nodes.add(treeVo);}return BuildTree.buildList(nodes, "0");}

RolePermissionDao

public List<RolePermission> list(RolePermission rolePermission,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{String sql = "SELECT * from t_easyui_role_permission where true ";long rid = rolePermission.getRid();if(rid!=0) {sql += " and rid = "+rid;}return super.executeQuery(sql, RolePermission.class, pageBean);}

PermissionAction

public String menuTree(HttpServletRequest req,HttpServletResponse resp) {try {User curentUser = (User) req.getSession().getAttribute("curentUser");RolePermission rolePermission = new RolePermission();rolePermission.setRid(curentUser.getType());List<RolePermission> rolePermissions = this.rolePermissionDao.list(rolePermission, null);StringBuilder pids = new StringBuilder();for (RolePermission rp : rolePermissions) {pids.append(",").append(rp.getPid());}List<TreeVo<Permission>> topNodePermission = this.permissionDao.topNodePermission(pids.substring(1), null);ResponseUtil.writeJson(resp,topNodePermission);//           ResponseUtil.writeJson(resp, this.permissionDao.topNode(null, null));} catch (InstantiationException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalAccessException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (SQLException e) { // TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}
//      结果码的位置为了在config.xml中寻找是转发还是重定向return null;}

网上书城的剩余功能后续会有，今天的就这些了，88