前言
在上篇博客我们实现了左侧树形菜单与选项卡,今天我们来实现最重要的部分——数据表格的增删改查
一、后台代码编写
1.1 数据表优化
将rid身份用中文表示,即将 rid 转换为对应的角色名称
SELECT u.*, CASE WHEN u.rid = '1' THEN '管理员' WHEN u.rid = '2' THEN '发起者' WHEN u.rid = '3' THEN '审批者' WHEN u.rid = '4' THEN '参与者' WHEN u.rid = '5' THEN '会议室管理员' ELSE '其他' END AS rname FROM t_oa_user u;
1.2 R工具类
package com.zking.util; import java.util.HashMap; public class R extends HashMap{ public R data(String key, Object value) { this.put(key, value); return this; } /** * data 数据传入 code返回结果成功还是失败 count分页 * @param code * @param msg * @return */ public static R ok(int code, String msg) { R r = new R(); r.data("success", true).data("code", code).data("msg", msg); return r; } public static R error(int code, String msg) { R r = new R(); r.data("success", false).data("code", code).data("msg", msg); return r; } public static R ok(int code, String msg,Object data) { R r = new R(); r.data("success", true).data("code", code).data("msg", msg).data("data", data); return r; } public static R ok(int code, String msg, long count, Object data) { R r = new R(); r.data("success", true).data("code", code).data("msg", msg).data("count", count).data("data", data); return r; } }
- data方法:该方法用于向R对象中添加键值对数据,并返回R对象本身,以支持链式调用
- ok方法和error方法:这些方法用于返回通用格式的响应结果。
- 分页信息:代码中提供了一个构建分页响应结果的方法ok,其中包含了count和data两个部分。
1.3 UserDao新增改查
package com.xqx.dao; import java.util.List; import java.util.Map; import com.xqx.entity.User; import com.zking.util.BaseDao; import com.zking.util.MD5; import com.zking.util.PageBean; import com.zking.util.StringUtils; /** * @author W许潜行 2023年7月11日 上午11:20:43 */ public class UserDao extends BaseDao<User> { /** * 查询所有用户 * * @param user * @param clz * @param pageBean * @return * @throws Exception */ public List<User> list(User user, Class<User> clz, PageBean pageBean) throws Exception { String sql = "select * from t_oa_user where 1=1"; return super.executeQuery(sql, clz, pageBean); } /** * 查询所有用户角色 * * @param user * @param pageBean * @return * @throws Exception */ public List<Map<String, Object>> userRoles(User user, PageBean pageBean) throws Exception { String sql = "SELECT\r\n" + " u.*,\r\n" + " CASE\r\n" + " WHEN u.rid = '1' THEN '管理员'\r\n" + " WHEN u.rid = '2' THEN '发起者'\r\n" + " WHEN u.rid = '3' THEN '审批者'\r\n" + " WHEN u.rid = '4' THEN '参与者'\r\n" + " WHEN u.rid = '5' THEN '会议室管理员'\r\n" + " ELSE '其他'\r\n" + " END AS rname\r\n" + "FROM\r\n" + " t_oa_user u"; // 按照登录账号模糊查询 if (StringUtils.isNotBlank(user.getLoginName())) { sql += " WHERE loginName LIKE '" + user.getLoginName() + "%'"; } return super.executeQuery(sql, pageBean); } /** * 新增用户 * * @param user * @throws Exception */ public int addUser(User user) throws Exception { String sql = "insert into t_oa_user(name,loginName,pwd) values(?,?,?)"; return super.executeUpdate(sql, user, new String[] { "name", "loginName", "pwd" }); } /** * 编辑用户 * * @param user * @throws Exception */ public int editUser(User user) throws Exception { String sql = "update t_oa_user set name=?,loginName=?, pwd=?" + " where id=?"; return super.executeUpdate(sql, user, new String[] { "name", "loginName", "pwd", "id" }); } /** * 删除用户 * * @param user * @throws Exception */ public int delUser(User user) throws Exception { String sql = "delete from t_oa_user where id=?"; return super.executeUpdate(sql, user, new String[] { "id" }); } /** * 登录 * * @param user * @return * @throws Exception */ public User login(User user) throws Exception { String sql = "select * from t_oa_user where loginName='" + user.getLoginName() + "'and pwd='" + user.getPwd() + "'"; List<User> userList = super.executeQuery(sql, User.class, null); if (userList.size() == 1) { return userList.get(0); } return null; } /** * 注册 * * @param user * @return * @throws Exception */ public int register(User user) throws Exception { String sql = "insert into t_oa_user(name,loginName,pwd,rid) values(?,?,?,4)"; return super.executeUpdate(sql, user, new String[] { "name", "loginName", "pwd" }); } }
1.4 Servlet的编写
package com.xqx.web; import java.io.IOException; import java.util.List; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.xqx.dao.UserDao; import com.xqx.entity.User; import com.zking.framework.ActionSupport; import com.zking.framework.ModelDriver; import com.zking.util.PageBean; import com.zking.util.R; import com.zking.util.ResponseUtil; /** * @author W许潜行 2023年7月11日 上午11:20:35 */ public class UserAction extends ActionSupport implements ModelDriver<User> { User user = new User(); UserDao ud = new UserDao(); R R = new R(); public void login(HttpServletRequest req, HttpServletResponse resp) { try { User login = ud.login(user); ResponseUtil.writeJson(resp, login); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } public void register(HttpServletRequest req, HttpServletResponse resp) { try { int register = ud.register(user); ResponseUtil.writeJson(resp, register); } catch (Exception e) { e.printStackTrace(); } } /** * * @param req * @param resp * @throws IOException * @throws ServletException */ public void userRoles(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException { try { PageBean pageBean = new PageBean(); pageBean.setRequest(req); List<Map<String, Object>> list = ud.userRoles(user, pageBean); ResponseUtil.writeJson(resp, R.ok(0, "查询成功", pageBean.getTotal(), list)); } catch (Exception e) { e.printStackTrace(); } } /** * 用户新增 * * @param req * @param resp * @return * @throws IOException * @throws ServletException */ public void addUser(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException { try { int addUser = ud.addUser(user); if (addUser > 0) { ResponseUtil.writeJson(resp, R.ok(200, "用户新增成功")); } else { ResponseUtil.writeJson(resp, R.error(0, "用户新增失败")); } ResponseUtil.writeJson(resp, addUser); } catch (Exception e) { e.printStackTrace(); } } /** * 用户编辑 * * @param req * @param resp * @throws IOException * @throws ServletException */ public void editUser(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException { try { int editUser = ud.editUser(user); if (editUser > 0) { ResponseUtil.writeJson(resp, R.ok(200, "用户编辑成功")); } else { ResponseUtil.writeJson(resp, R.error(0, "用户编辑失败")); } ResponseUtil.writeJson(resp, editUser); } catch (Exception e) { e.printStackTrace(); } } /** * 用户删除 * * @param req * @param resp * @throws IOException * @throws ServletException */ public void delUser(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException { try { int delUser = ud.delUser(user); if (delUser > 0) { ResponseUtil.writeJson(resp, R.ok(200, "用户删除成功")); } else { ResponseUtil.writeJson(resp, R.error(0, "用户删除失败")); } ResponseUtil.writeJson(resp, delUser); } catch (Exception e) { e.printStackTrace(); } } @Override public User getModel() { // TODO Auto-generated method stub return user; } }
二、前台页面的编写
2.1 userManege.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <%@ include file="../../common/head.jsp"%> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <style type="text/css"> .layui-tab{ height: 100%; } </style> </head> <body> <!-- 搜索栏 --> <div class="layui-form-item"> <div class="layui-inline"> <label class="layui-form-label">用户名:</label> <div class="layui-input-inline"> <input type="text" id="name" placeholder="请输入用户名" autocomplete="off" class="layui-input"> </div> </div> <div class="layui-inline"> <div class="layui-input-inline"> <button id="btn_search" type="button" class="layui-btn layui-btn-normal"> <i class="layui-icon layui-icon-search"></i> 查询 </button> <button id="btn_add" type="button" class="layui-btn">新增</button> </div> </div> </div> <!-- 数据表格及分页 --> <table id="tb" lay-filter="tb" class="layui-table" style="margin-top:-15px;"></table> <!-- 对话框(新增和编辑共用一个页面) --> <table class="layui-hide" id="test" lay-filter="test"></table> <script type="text/html" id="toolbarDemo"> <div class="layui-btn-container"> <button class="layui-btn layui-btn-sm" lay-event="getCheckData">获取选中行数据</button> <button class="layui-btn layui-btn-sm" lay-event="getCheckLength">获取选中数目</button> <button class="layui-btn layui-btn-sm" lay-event="isAll">验证是否全选</button> </div> </script> <script type="text/html" id="barDemo"> <a class="layui-btn layui-btn-xs" lay-event="edit">编辑</a> <a class="layui-btn layui-btn-danger layui-btn-xs" lay-event="del">删除</a> </script> <script type="text/javascript" src="static/js/system/userManage.js"></script> </body> </html>
2.2 userManage.js
let layer, $, table; var row; layui.use([ 'jquery', 'layer', 'table' ], function() { layer = layui.layer, $ = layui.jquery, table = layui.table; // 初始化数据表格 initTable(); // 绑定查询按钮的点击事件 $('#btn_search').click(function() { query(); }); // 绑定新增按钮的点击事件 $('#btn_add').click(function() { row = null; open('新增'); }); }); // 1.初始化数据表格 function initTable() { table.render({ elem : '#tb', url : 'user.action?methodName=userRole', toolbar : '#toolbarDemo' // 开启头部工具栏,并为其绑定左侧模板 , defaultToolbar : [ 'filter', 'exports', 'print', { // 自定义头部工具栏右侧图标。如无需自定义,去除该参数即可 title : '提示', layEvent : 'LAYTABLE_TIPS', icon : 'layui-icon-tips' } ], title : '用户数据表', cols : [ [ { type : 'checkbox', fixed : 'left' }, { field : 'id', title : 'ID', width : 80, fixed : 'left', unresize : true, sort : true }, { field : 'loginName', title : '账户名', width : 120, edit : 'text' }, { field : 'name', title : '用户名', width : 150, edit : 'text', templet : function(res) { return '<em>' + res.name + '</em>' } }, { field : 'pwd', title : '密码', width : 80, edit : 'text', sort : true }, { field : 'rname', title : '角色名称', width : 100 }, { fixed : 'right', title : '操作', toolbar : '#barDemo', width : 150 } ] ], page : true }); // 表格监控 table.on('tool(tb)', function(obj) { //给行数据赋值 row = obj.data; if (obj.event == "edit") { open("编辑"); } else if (obj.event == "del") { layer.confirm('确认删除吗?', { icon : 3, title : '提示' }, function(index) { $.post('user.action', { 'methodName' : 'del', 'id' : row.id }, function(rs) { if (rs.success) { // 调用查询方法刷新数据 query(); } else { layer.msg(rs.msg, function() { }); } }, 'json'); layer.close(index); }); } else { } }); } // 2.点击查询 function query() { //表格重载 table.reload('tb', { url : $("#ctx").val() + '/user.action', // 请求地址 method : 'POST', // 请求方式,GET或者POST loading : true, // 是否显示加载条(默认 true) page : true, // 是否分页 where : { // 设定异步数据接口的额外参数,任意设 'methodName' : 'userRole', 'name' : $('#name').val() }, request : { // 自定义分页请求参数名 pageName : 'page', // 页码的参数名称,默认:page limitName : 'rows' // 每页数据量的参数名,默认:limit } }); } // 3.对话框 function open(title) { layer.open({ type : 2, // layer提供了5种层类型。可传入的值有:0(信息框,默认)1(页面层)2(iframe层)3(加载层)4(tips层) title : title, area : [ '660px', '340px' ], // 宽高 skin : 'layui-layer-rim', // 样式类名 content : $("#ctx").val() + '/jsp/system/userEdit.jsp', // 书本编辑页面 btn : [ '保存', '关闭' ], yes : function(index, layero) { // 调用子页面中提供的getData方法,快速获取子页面的form表单数据 getData()子页面的方法 let data = $(layero).find("iframe")[0].contentWindow.getData(); console.log(data); // 判断title标题 let methodName = "add"; if (title == "编辑") methodName = "edit"; $.post('user.action?methodName=' + methodName, data, function(rs) { if (rs.success) { // 关闭对话框 layer.closeAll(); // 调用查询方法刷新数据 query(); } else { layer.msg(rs.msg, function() { }); } }, 'json'); }, btn2 : function(index, layero) { layer.closeAll(); } }); }
2.3 新增、修改用户共用jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@include file="/common/head.jsp"%> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <script type="text/javascript" src="${pageContext.request.contextPath }/static/js/system/userEdit.js"></script> <title>用户新增、修改共用界面</title> </head> <style> .layui-form-select dl{ max-height:150px; } </style> <body> <div style="padding:10px;"> <form class="layui-form layui-form-pane" lay-filter="user"> <input type="hidden" name="id"/> <div class="layui-form-item"> <label class="layui-form-label">用户名称</label> <div class="layui-input-block"> <input type="text" id="name" name="name" autocomplete="off" placeholder="请输入用户名" class="layui-input"> </div> </div> <div class="layui-form-item"> <label class="layui-form-label">用户角色</label> <div class="layui-input-block"> <select name="rid"> <option value="">---请选择---</option> <option value="1">管理员</option> <option value="2">发起者</option> <option value="3">审批者</option> <option value="4">参与者</option> <option value="5">会议管理员</option> </select> </div> </div> <div class="layui-form-item"> <label class="layui-form-label">登录账号</label> <div class="layui-input-block"> <input type="text" name="loginName" lay-verify="required" placeholder="请输入账号" autocomplete="off" class="layui-input"> </div> </div> <div class="layui-form-item"> <label class="layui-form-label">登录密码</label> <div class="layui-input-block"> <input type="password" name="pwd" placeholder="请输入密码" autocomplete="off" class="layui-input"> </div> </div> </form> </div> </body> </html>
2.4add、edit的js
let layer,form,$; layui.use(['layer','form','jquery'],function(){ layer=layui.layer,form=layui.form,$=layui.jquery; initData(); }); function initData(){ if(null!=parent.row){ //parent.row:表格行对象 form.val('user',$.extend({}, parent.row||{})); $('#name').attr('readonly','readonly'); } } function getData(){ return form.val('user'); }
三、演示
3.1 查询
3.2 新增
3.3 修改
3.4 删除