目录
[2.case when的处理](#2.case when的处理)
LayUI之入门
1.什么是layui
2.layui入门
3.自定义模块
参考 模块规范
4.用户登录
这里没有与数据库进行交互
5.主页搭建
参考网站布局
LayUI之动态树
思路
- 静态页面数据是什么样?
- 分析需要什么样的数据?
- 我们如何得到这些数据?
- 将现有的数据如何转换成我们需要的数据?
- 将具有层级关系的数据渲染成树形结构.
main.jsp
<div class="layui-side layui-bg-black">
<div class="layui-side-scroll">
<!-- 左侧导航区域(可配合layui已有的垂直导航) -->
<ul class="layui-nav layui-nav-tree" lay-filter="test" id="layui_menus">
<li class="layui-nav-item layui-nav-itemed">
<a class="" href="javascript:;">menu group 1</a>
<dl class="layui-nav-child">
<dd><a href="javascript:;" onclick="openTab('','','')">menu 1</a></dd>
<dd><a href="javascript:;">menu 2</a></dd>
<dd><a href="javascript:;">menu 3</a></dd>
<dd><a href="">the links</a></dd>
</dl>
</li>
<li class="layui-nav-item">
<a href="javascript:;">menu group 2</a>
<dl class="layui-nav-child">
<dd><a href="javascript:;">list 1</a></dd>
<dd><a href="javascript:;">list 2</a></dd>
<dd><a href="">超链接</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="javascript:;">click menu item</a></li>
<li class="layui-nav-item"><a href="">the links</a></li>
</ul>
</div>
</div>
此处后台代码...
main.js
let layer,$,element;
layui.use(['jquery', 'layer', 'element'], function(){
layer = layui.layer
,$ = layui.jquery
,element = layui.element;
$.ajax({
url:'${pageContext.request.contextPath }/permission.action?methodName=menus'
,dataType:'json'
,success:function(data){
let htmlstr = '';
let json = data.data;
$.each(json,function(i,n){
htmlstr += '<li class="layui-nav-item layui-nav-itemed">';
htmlstr += ' <a class="" href="javascript:;">'+json[i].text+'</a>';
if(json[i].hasChildren){
let children = json[i].children;
$.each(children,function(index,node){
htmlstr += '<dl class="layui-nav-child">';
htmlstr += '<dd><a href="javascript:;" onclick="openTab(\''+children[index].text+'\',\''+children[index].attributes.self.url+'\',\''+children[index].id+'\');" >'+children[index].text+'</a></dd>';
htmlstr += '</dl>';
});
}
htmlstr += '</li>';
})
$("#layui_menus").html(htmlstr);
}
});
});
LayUI之动态选项卡
思路
- 选项卡简介
- 动态添加选项卡
- 重复选项卡的限定
- 切换指定选项卡
- 选项卡样式
- 用户登录-结果返回R类的增强
1.选项卡
<style>
.layui-tab-title>li:first-child>i{
display:none;
}
.layui-tab>.layui-tab-content{
padding:0px;
}
body,html{
padding:0px;
margin:0px;
overflow:hidden;
}
</style>
main.jsp
<div class="layui-body">
<!-- 内容主体区域 -->
<div style="padding: 15px;">
<div class="layui-tab" lay-filter="openTab" lay-allowclose="true">
<ul class="layui-tab-title">
<li class="layui-this" lay-id="-1">首页</li>
</ul>
<div class="layui-tab-content">
<div class="layui-tab-item layui-show">首页内容</div>
</div>
</div>
</div>
main.js
function openTab(title,url,id){
let $node = $("li[lay-id='"+id+"']");
if($node.length == 0){
element.tabAdd('openTab', {
title: title
,content: "<iframe frameborder='0' src='"+url+"' scrolling='auto' style='width:100%;height:100%;'></iframe>"
,id: id
})
}
element.tabChange('openTab', id); //切换到:用户管理
}
2.用户登录
User.java
package com.zking.entity;
public class User {
private Long id;
private String name;
private String loginName;
private String pwd;
private Long rid;
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 getLoginName() {
return loginName;
}
public void setLoginName(String loginName) {
this.loginName = loginName;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
public Long getRid() {
return rid;
}
public void setRid(Long rid) {
this.rid = rid;
}
public User() {
super();
// TODO Auto-generated constructor stub
}
@Override
public String toString() {
return "User [id=" + id + ", name=" + name + ", loginName=" + loginName + ", pwd=" + pwd + ", rid=" + rid + "]";
}
}
UserDao.java
package com.zking.dao;
import java.util.List;
import com.zking.entity.User;
import com.zking.util.BaseDao;
import com.zking.util.PageBean;
import com.zking.util.StringUtils;
public class UserDao extends BaseDao<User> {
public User login(User user, PageBean pageBean) throws Exception {
String loginName = user.getLoginName();
String pwd = user.getPwd();
String sql = "select * from t_oa_user where loginname = '" + loginName + "' and pwd = '"+pwd+"'";
List<User> users = super.executeQuery(sql, User.class, pageBean);
return users == null || users.size() == 0 ? null : users.get(0);
}
}
UserAction.java
package com.zking.web;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.zking.dao.UserDao;
import com.zking.entity.User;
import com.zking.framework.ActionSupport;
import com.zking.framework.ModelDriver;
import com.zking.util.CommonUtils;
import com.zking.util.PageBean;
import com.zking.util.R;
import com.zking.util.ResponseUtil;
public class UserAction extends ActionSupport implements ModelDriver<User> {
private User user = new User();
private UserDao userDao = new UserDao();
public String login(HttpServletRequest req, HttpServletResponse resp) {
try {
User u = userDao.login(user, null);
if (u != null) {
ResponseUtil.writeJson(resp, R.ok(200, "登录成功"));
req.getSession().setAttribute("user", u);
}else {
ResponseUtil.writeJson(resp, R.error(0, "登录失败"));
}
} catch (Exception e) {
e.printStackTrace();
try {
ResponseUtil.writeJson(resp, R.error(0, "登录失败"));
} catch (Exception e1) {
e1.printStackTrace();
}
}
return null;
}
@Override
public User getModel() {
return user;
}
}
R.java
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;
}
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;
}
}
LayUI之用户管理
思路
- 用户查询
- 用户角色case when后台处理
- 用户新增
- 用户修改
- 用户删除
1.用户查询
2.case when的处理
UserDao.java
public List<User> list(User user, PageBean pageBean) throws Exception {
String sql = "select * from t_oa_user where 1=1 ";
String name = user.getName();
if (StringUtils.isNotBlank(name))
sql += " and name like '%" + name + "%'";
return super.executeQuery(sql, User.class, pageBean);
}
public List<Map<String, Object>> listUserRole(User user, PageBean pageBean) throws Exception {
String sql = "select *,\r\n" +
"(case rid\r\n" +
"when 1 then '管理人员'\r\n" +
"when 4 then '参与者'\r\n" +
"else '其他角色' end) as rname\r\n" +
"from t_oa_user ";
String name = user.getName();
if (StringUtils.isNotBlank(name))
sql += " and name like '%" + name + "%'";
return super.executeQuery(sql, pageBean);
}
public int add(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"});
}
public int edit(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"});
}
public int del(User user) throws Exception {
String sql = "delete from t_oa_user where id = ?";
return super.executeUpdate(sql, user, new String[] {"id"});
}
UserAction.java
public String listUserRole(HttpServletRequest req, HttpServletResponse resp) {
try {
PageBean pageBean = new PageBean();
pageBean.setRequest(req);
List<Map<String, Object>> users = userDao.listUserRole(user, pageBean);
// layui 的code 返回一定要是 0,不能是200,否者返回不了数据
ResponseUtil.writeJson(resp, R.ok(0, "查询成功", pageBean.getTotal(), users));
} catch (Exception e) {
e.printStackTrace();
try {
ResponseUtil.writeJson(resp, R.error(0, "查询失败"));
} catch (Exception e1) {
e1.printStackTrace();
}
}
return null;
}
userManage.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="${pageContext.request.contextPath }/static/js/system/userManage.js"></script>
<title>用户管理</title>
</head>
<body>
<!-- 搜索栏 -->
<div class="layui-form-item">
<div class="layui-inline">
<label class="layui-form-label">用户名:</label>
<div class="layui-input-inline">
<input type="text" id="name" placeholder="请输入用户名" autocomplete="off" class="layui-input">
</div>
</div>
<div class="layui-inline">
<div class="layui-input-inline">
<button id="btn_search" type="button" class="layui-btn layui-btn-normal">
<i class="layui-icon layui-icon-search"></i>
查询
</button>
<button id="btn_add" type="button" class="layui-btn">新增</button>
</div>
</div>
</div>
<!-- 数据表格及分页 -->
<table id="tb" lay-filter="tb" class="layui-table" style="margin-top:-15px;"></table>
<!-- 对话框(新增和编辑共用一个页面) -->
<script type="text/html" id="toolbar">
<button class="layui-btn layui-btn-sm" lay-event="edit">编辑</button>
<button class="layui-btn layui-btn-sm" lay-event="del">删除</button>
<button class="layui-btn layui-btn-sm" lay-event="reset">重置密码</button>
</script>
</body>
</html>
userManage.js
let layer,$,table;
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();
});
});
//1.初始化数据表格
function initTable(){
table.render({ //执行渲染
elem: '#tb', //指定原始表格元素选择器(推荐id选择器)
// url: 'user.action?methodName=list', //请求地址
height: 340, //自定义高度
loading: false, //是否显示加载条(默认 true)
cols: [[ //设置表头
{field: 'id', title: '用户编号', width: 120},
{field: 'name', title: '用户名', width: 120},
{field: 'loginName', title: '登录账号', width: 140},
{field: '', title: '操作', width: 220,toolbar:'#toolbar'},
]]
});
}
//2.点击查询
function query(){
table.reload('tb', {
url: $("#ctx").val()+'/user.action', //请求地址
method: 'POST', //请求方式,GET或者POST
loading: true, //是否显示加载条(默认 true)
page: true, //是否分页
where: { //设定异步数据接口的额外参数,任意设
'methodName':'listUserRole',
'name':$('#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.用户新增
UserAction.java
public String add(HttpServletRequest req, HttpServletResponse resp) {
try {
int rs = userDao.add(user);
if (rs > 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"));
}
} catch (Exception e) {
e.printStackTrace();
try {
ResponseUtil.writeJson(resp, R.error(0, "用户新增失败"));
} catch (Exception e1) {
e1.printStackTrace();
}
}
return null;
}
public String edit(HttpServletRequest req, HttpServletResponse resp) {
try {
int rs = userDao.edit(user);
if (rs > 0) {
ResponseUtil.writeJson(resp, R.ok(200, "用户修改成功"));
}else {
ResponseUtil.writeJson(resp, R.error(0, "用户修改失败"));
}
} catch (Exception e) {
e.printStackTrace();
try {
ResponseUtil.writeJson(resp, R.error(0, "用户修改失败"));
} catch (Exception e1) {
e1.printStackTrace();
}
}
return null;
}
public String del(HttpServletRequest req, HttpServletResponse resp) {
try {
int rs = userDao.del(user);
if (rs > 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"));
}
} catch (Exception e) {
e.printStackTrace();
try {
ResponseUtil.writeJson(resp, R.error(0, "用户删除失败"));
} catch (Exception e1) {
e1.printStackTrace();
}
}
return null;
}
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');
});
});
//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
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";
$.post($("#ctx").val()+'/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();
}
});
}
userEdit.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="${pageContext.request.contextPath }/static/js/system/userEdit.js"></script>
<title>用户新增</title>
</head>
<style>
.layui-form-select dl{
max-height:150px;
}
</style>
<body>
<div style="padding:10px;">
<form class="layui-form layui-form-pane" lay-filter="user">
<input type="hidden" name="id"/>
<div class="layui-form-item">
<label class="layui-form-label">用户名称</label>
<div class="layui-input-block">
<input type="text" id="name" name="name" autocomplete="off" placeholder="请输入用户名" class="layui-input">
</div>
</div>
<div class="layui-form-item">
<label class="layui-form-label">用户角色</label>
<div class="layui-input-block">
<select name="rid">
<option value="">---请选择---</option>
<option value="1">管理员</option>
<option value="2">发起者</option>
<option value="3">审批者</option>
<option value="4">参与者</option>
<option value="5">会议管理员</option>
</select>
</div>
</div>
<div class="layui-form-item">
<label class="layui-form-label">登录账号</label>
<div class="layui-input-block">
<input type="text" name="loginName" lay-verify="required" placeholder="请输入账号" autocomplete="off" class="layui-input">
</div>
</div>
<div class="layui-form-item">
<label class="layui-form-label">登录密码</label>
<div class="layui-input-block">
<input type="password" name="pwd" placeholder="请输入密码" autocomplete="off" class="layui-input">
</div>
</div>
</form>
</div>
</body>
</html>
userEdit.js
let layer,form,$;
layui.use(['layer','form','jquery'],function(){
layer=layui.layer,form=layui.form,$=layui.jquery;
initData();
});
function initData(){
console.log(parent.row);
if(null!=parent.row){
//因为layui.each内部的逻辑问题导致的所以要先深拷贝一份然后再去val
//parent.row:表格行对象
form.val('user',$.extend({}, parent.row||{}));
$('#name').attr('readonly','readonly');
}
}
function getData(){
return form.val('user');
}
4.用户修改
5.用户删除
userManage.js
//1.初始化数据表格
function initTable(){
table.render({ //执行渲染
elem: '#tb', //指定原始表格元素选择器(推荐id选择器)
// url: 'user.action?methodName=list', //请求地址
height: 340, //自定义高度
loading: false, //是否显示加载条(默认 true)
cols: [[ //设置表头
{field: 'id', title: '用户编号', width: 120},
{field: 'name', title: '用户名', width: 120},
{field: 'loginName', title: '登录账号', width: 140},
{field: '', title: '操作', width: 220,toolbar:'#toolbar'},
]]
});
//在页面中的<table>中必须配置lay-filter="tb_goods"属性才能触发属性!!!
table.on('tool(tb)', function (obj) {
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){
$.post($("#ctx").val()+'/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{
}
});
}