LayUI是现在比较流行的一款前端框架
也有很多人基于LayUI开发了很多不错的组件,比如treetable树形表格。
因为treetable是第三方基于LayUI开发的,所以需要先用Layui引入一下文件。
layui.config({ base : 'static/layui/' }).extend({ treetable : 'treetable-lay/treetable' });
之后先看一下显示的效果。
之后页面只需要引入LayUI的CSS和JS就可以了。
页面给一个table标签,用于显示treetable中的数据样式。
<table class="layui-hide" id = "menu" lay-filter="menu"></table>
表格左上方的工具栏按钮组件代码。
<script type="text/html" id="toolbarDemo"> <div class="layui-btn-group"> <button class="layui-btn layui-btn-sm" lay-event="add"><i class="layui-icon"></i>新增</button> <button class="layui-btn layui-btn-sm" lay-event="updata"><i class="layui-icon"></i>修改</button> <button class="layui-btn layui-btn-sm" lay-event="delete"><i class="layui-icon"></i>删除</button> <button class="layui-btn layui-btn-sm" lay-event="refresh"><i class="layui-icon"></i>刷新</button> </div> </script>
JS请求加载数据及设置表格样式。
yui.use(['treetable', 'table', 'layer'], function () { var table = layui.table; var layer = layui.layer; var treetable = layui.treetable; //渲染表格 var renderTable = function(){ layer.load(2); //加载层 treetable.render({ height: 'full-160', id:'menu', treeColIndex: 1, //树形图标显示在第几列 treeSpid: '0', //最上级的父级id treeIdName: 'id', //id字段的名称 treePidName: 'parentId', //父级节点字段 treeDefaultClose: false, //是否默认折叠 treeLinkage: false, //父级展开时是否自动展开所有子级 elem: '#menu', //表格id url: 'menu/treedata', toolbar: '#toolbarDemo', page: false, cols: [ [ {type:'radio'}, {field: 'name', title: '菜单名称'}, {field: 'url' , title: '地址'}, {field: 'icon' , hide : true, title: '图标'}, {field: 'idx', title: '排序'} ] ], //数据渲染完的回调 done: function () { //关闭加载 layer.closeAll('loading'); } }) }; renderTable(); });
其中URL地址为请求数据地址。后台对应的方法。
@RequestMapping(value="/treedata") @ResponseBody public Object list(TbMenuForm form){ Sort sort = bulidSort(); //排序 Specification<TbMenu> spec = buildSpec(form); //查询条件 List<TbMenu> list = menuService.findAll(spec, sort); return new TreeTableModel(list); } public Sort bulidSort() { return Sort.by("idx"); //按idx字段排序 } public Specification<TbMenu> buildSpec(TbMenuForm form){ return null; }
list方法中的TbMenuForm接收类中的字段和实体类字段差不多。其中TreeTableModel返回类为返回数据格式的工具类。
实体类TbMenu代码
import com.fasterxml.jackson.annotation.JsonIgnore; import org.springframework.data.annotation.CreatedBy; import javax.persistence.*; import java.util.ArrayList; import java.util.List; @Entity public class TbMenu { private Integer id; private String name; //菜单名称 private String url; //路径 private String icon; //图标 private double idx; //排序 @JsonIgnore private TbMenu parent; @JsonIgnore private List<TbMenu> children=new ArrayList<>(); @Id @GeneratedValue public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } public String getIcon() { return icon; } public void setIcon(String icon) { this.icon = icon; } public double getIdx() { return idx; } public void setIdx(double idx) { this.idx = idx; } @ManyToOne @CreatedBy public TbMenu getParent() { return parent; } public void setParent(TbMenu parent) { this.parent = parent; } @OneToMany(cascade=CascadeType.ALL,mappedBy="parent") @OrderBy(value="idx") public List<TbMenu> getChildren() { return children; } public void setChildren(List<TbMenu> children) { this.children = children; } public TbMenu(Integer id, String name, String url, String icon, double idx, TbMenu parent, List<TbMenu> children) { this.id = id; this.name = name; this.url = url; this.icon = icon; this.idx = idx; this.parent = parent; this.children = children; } public TbMenu(Integer id) { this.id = id; } public TbMenu() { } @Transient public Integer getParentId() { return parent==null? 0 : parent.getId(); } }
TbMenuForm接收类
public class TbMenuForm { private Integer id; private String name; //菜单名称 private String url; //路径 private String icon; //图标 private double idx; //排序 private Integer parentId; //父节点id public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } public String getIcon() { return icon; } public void setIcon(String icon) { this.icon = icon; } public double getIdx() { return idx; } public void setIdx(double idx) { this.idx = idx; } public Integer getParentId() { return parentId; } public void setParentId(Integer parentId) { this.parentId = parentId; } }
返回数据格式TreeTableModel类
public class TreeTableModel { private Integer code=0; private String msg="ok"; private Integer count; private List data; public Integer getCode() { return code; } public void setCode(Integer code) { this.code = code; } public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public Integer getCount() { return count; } public void setCount(Integer count) { this.count = count; } public List getData() { return data; } public void setData(List data) { this.data = data; } public TreeTableModel() { super(); // TODO Auto-generated constructor stub } public TreeTableModel(Integer code, String msg, Integer count, List data) { super(); this.code = code; this.msg = msg; this.count = count; this.data = data; } public TreeTableModel(List data) { super(); this.count=data.size(); this.data = data; } }
返回的JSON数据格式,这里需要注意的是parentId为父节点,需要和前面的JS中设置的属性值一样,没有父级节点parentId需要为0,不能为null。
{ "code": 0, "msg": "ok", "count": 6, "data": [ { "id": 1, "name": "系统设置", "url": "", "icon": "", "idx": 1.0, "parentId": 0 //最上级节点,父节点为0 }, { "id": 2, "name": "角色管理", "url": "", "icon": "", "idx": 1.0, "parentId": 1 //上级节点 }, { "id": 6, "name": "数据表格", "url": "", "icon": "", "idx": 1.0, "parentId": 5 }, { "id": 3, "name": "部门管理", "url": "", "icon": "", "idx": 2.0, "parentId": 1 }, { "id": 5, "name": "表格案例", "url": "", "icon": "", "idx": 2.0, "parentId": 0 }, { "id": 7, "name": "树形表格", "url": "", "icon": "", "idx": 2.0, "parentId": 5 } ] }
数据加载完成后,页面中就可以显示出数据了,效果如下。
使用table.on('toolbar(menu)', function(obj){})监听表格上面的工具类按钮点击事件。
监听工具栏的新增修改删除和刷新按钮方法
table.on('toolbar(menu)', function(obj){ var checkStatus = table.checkStatus('menu'); var data = checkStatus.data; if(obj.event === 'add'){ var parentId = data.length==0? 0 : data[0].id; $.get('menu/edit', {parentId: parentId}, function(data){ layer.open({ type: 1, title: '新增', area: ['530px'], content: data, btn: ['提交', '退出'], yes:function(){ }, success:function(layero,index){ layui.use('form',function(){ var form=layui.form; layero.addClass('layui-form'); var submitBtn=layero.find('.layui-layer-btn0'); submitBtn.attr('lay-filter','formVerify').attr('lay-submit',''); layero.keydown(function(e){ if(e.keyCode==13){ submitBtn.click(); } }); form.on('submit(formVerify)',function(data){ $.post('menu/save',data.field,function(result){ if(result.success){ layer.close(index); //刷新,重新渲染表格 renderTable(); } layer.msg(result.msg,{offset:'rb'}); }); return false; }); }); } }) }) }else if(obj.event === 'updata'){ if(data.length != 1){ layer.msg("请选择一行进行编辑",{offset:'rb'}); }else{ var id = data[0].id; $.get('menu/edit', {id: id}, function(data){ layer.open({ type: 1, title: '修改', area: ['530px'], content: data, btn: ['提交', '退出'], yes:function(){ }, success:function(layero,index){ layui.use('form',function(){ var form=layui.form; layero.addClass('layui-form'); var submitBtn=layero.find('.layui-layer-btn0'); submitBtn.attr('lay-filter','formVerify').attr('lay-submit',''); layero.keydown(function(e){ if(e.keyCode==13){ submitBtn.click(); } }); form.on('submit(formVerify)',function(data){ $.post('menu/save',data.field,function(result){ if(result.success){ layer.close(index); //刷新,重新渲染表格 renderTable(); } layer.msg(result.msg,{offset:'rb'}); }); return false; }); }); } }) }) } }else if(obj.event === "delete"){ if(data.length != 1){ layer.msg("请选择一行进行删除",{offset:'rb'}); }else{ var id = data[0].id; layer.confirm('确定删除选定行的数据吗?', function(index){ $.post('menu/delete',{id:id},function(result){ if(result.success){ layer.close(index); renderTable(); } layer.msg(result.msg,{offset:'rb'}); }); }); } }else if(obj.event === "refresh"){ renderTable(); } })
其中obj.event值为点击工具栏按钮的lay-event属性值。
新增和修改方法,先请求后台menu/edit获取到新增修改的页面,把页面用LayUI的layer弹框显示出来。这里新增和修改用的是一个方法和一个页面。修改时传递了一个id参数,用于查询修改的数据和区别新增还是修改。新增时如果选中了一行,会把当前行的id作为参数,传递到后台,相当于默认的父节点id。
跳转到新增和修改页面的edit后台方法。如果修改就把当前修改的数据传递到前台,新增时,如果有选中的节点,就把选中节点的id作为父节点id传递到前台。
@Override public void edit(TbMenuForm form, ModelMap map) throws InstantiationException, IllegalAccessException { TbMenu model = new TbMenu(); Integer id = form.getId(); if(id != null) { model = menuService.findById(id); } map.put("model", model); //修改的对象,如果新增model就为null map.put("parentId", form.getParentId()); //父节点id }
edit页面代码,上级菜单是用LayUI的TreeSelect做的,对于TreeSelect的用法,大家可以访问LayUI下拉树TreeSelect的使用。
<style type="text/css"> .myData .layui-form-item{ margin: 20px 100px 10px 45px; } .myData .layui-form-label{ width: 80px; } </style> <form class="layui-form myData" action="save" method="post" lay-filter="stuform"> <input type="hidden" name="id" data-th-value="${model.id}" /> <div class="layui-form-item"> <label class="layui-form-label">上级菜单:</label> <div class="layui-input-block"> <input type="text" name="parentId" id="tree" lay-filter="tree" class="layui-input" /> </div> </div> <div class="layui-form-item"> <label class="layui-form-label">菜单名称:</label> <div class="layui-input-block"> <input type="text" name="name" lay-verify="required" th:value="${model.name}" class="layui-input" /> </div> </div> <div class="layui-form-item" > <label class="layui-form-label">菜单地址:</label> <div class="layui-input-block"> <input type="text" name="url" th:value="${model.url}" class="layui-input" /> </div> </div> <div class="layui-form-item" > <label class="layui-form-label">图标:</label> <div class="layui-input-block"> <input type="text" name="icon" th:value="${model.icon}" class="layui-input" /> </div> </div> <div class="layui-form-item" > <label class="layui-form-label">排序:</label> <div class="layui-input-block"> <input type="text" name="idx" th:value="${model.idx}" class="layui-input" /> </div> </div> </form> <script th:inline="javascript"> layui.use(["treeSelect", "form"], function () { var form = layui.form; form.render('select'); var treeSelect = layui.treeSelect; treeSelect.render({ // 选择器 elem: '#tree', // 数据 data: 'menu/treeSelect?id='+[[${model.id==null ? 0 : model.id}]], // 异步加载方式:get/post,默认get type: 'post', // 占位符 placeholder: '上级菜单', // 是否开启搜索功能:true/false,默认false search: true, // 一些可定制的样式 style: { folder: { enable: true }, line: { enable: true } }, // 加载完成后的回调函数 success: function (d) { // 选中节点,根据id筛选 treeSelect.checkNode('tree', [[${model.parent == null? parentId: model.parent.id}]]); // 刷新树结构 treeSelect.refresh('tree'); } }); }); </script>
menu/treeSelect加载TreeSelect数据。对于TreeSelect的用法,大家可以访问LayUI下拉树TreeSelect的使用。
@RequestMapping(value="/treeSelect") @ResponseBody public Object treeSelect(Integer id) { Sort sort = Sort.by("idx"); //排序 Specification<TbMenu> spec = buildSpec1(); //查询条件,可以自行添加,对应的buildSpec1方法 List<TbMenu> list = menuService.findAll(spec,sort); return buildTree(list, id); } private Object buildTree(List<TbMenu> list, Integer id) { List<HashMap<String, Object>> result=new ArrayList<>(); for (TbMenu dept : list) { if(dept.getId() != id) { HashMap<String, Object> node=new HashMap<>(); node.put("id", dept.getId()); node.put("name",dept.getName()); node.put("open", false); node.put("checked", false); if(dept.getChildren().size() != 0) { node.put("children",buildTree(dept.getChildren(), id)); } result.add(node); } } return result; } public Specification<TbMenu> buildSpec1() { Specification<TbMenu> specification = new Specification<TbMenu>() { private static final long serialVersionUID = 1L; @Override public Predicate toPredicate(Root<TbMenu> root, CriteriaQuery<?> query, CriteriaBuilder cb) { HashSet<Predicate> rules=new HashSet<>(); Predicate parent = cb.isNull(root.get("parent")); //添加父节点为空的条件,即查询最上级数据 rules.add(parent); return cb.and(rules.toArray(new Predicate[rules.size()])); } }; return specification; }
页面显示效果。
后台保存方法
@Override public Object save(TbMenuForm form) { try { TbMenu model = new TbMenu(); Integer id = form.getId(); if(id != null) { model = menuService.findById(id); } //父级菜单id Integer parentId = form.getParentId(); if(parentId == null) { model.setParent(null); }else { model.setParent(new TbMenu(parentId)); } BeanUtils.copyProperties(form, model,"id", "parent"); menuService.save(model); return new AjaxResult("数据保存成功!"); } catch (Exception e) { return new AjaxResult(false,"数据保存失败"); } }
AjaxResult类是一个请求完成返回的一个工具类。
import java.util.HashMap; import org.springframework.data.domain.Page; public class AjaxResult { private Boolean success; private String msg; public Boolean getSuccess() { return success; } public void setSuccess(Boolean success) { this.success = success; } public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public AjaxResult(String msg) { super(); this.success=true; this.msg = msg; } public AjaxResult(Boolean success, String msg) { super(); this.success = success; this.msg = msg; } public AjaxResult(boolean success) { this.success=success; } @SuppressWarnings("rawtypes") public static HashMap<String, Object> bulidPageResult(Page page) { HashMap<String, Object> result=new HashMap<>(); result.put("total", page.getTotalElements()); result.put("rows", page.getContent()); return result; } }
新增和修改就完了,下面就是删除数据。删除需要先判断是否选中了一行。然后把选中行的id作为参数,传递到后台,根据id删除数据就可以了。
if(data.length != 1){ layer.msg("请选择一行进行删除",{offset:'rb'}); }else{ var id = data[0].id; layer.confirm('确定删除选定行的数据吗?', function(index){ $.post('menu/delete',{id:id},function(result){ if(result.success){ layer.close(index); renderTable(); } layer.msg(result.msg,{offset:'rb'}); }); }); }
最后一个就是刷新了,刷新只需要把表格刷新一下就可以了,调用一下表格刷新方法。
renderTable();
这里持久层框架用的Spring-Data-Jpa,但只要数据传递到后台了,怎么处理都差不多,请求的数据只要按照规定的JSON格式返回就可以了。后台方法代码上面基本的有,前台页面代码有些零散,下面是显示页面完整代码。
<script type="text/html" id="toolbarDemo"> <div class="layui-btn-group"> <button class="layui-btn layui-btn-sm" lay-event="add"><i class="layui-icon"></i>新增</button> <button class="layui-btn layui-btn-sm" lay-event="updata"><i class="layui-icon"></i>修改</button> <button class="layui-btn layui-btn-sm" lay-event="delete"><i class="layui-icon"></i>删除</button> <button class="layui-btn layui-btn-sm" lay-event="refresh"><i class="layui-icon"></i>刷新</button> </div> </script> <table class="layui-hide" id = "menu" lay-filter="menu"></table> <script type="text/javascript"> layui.use(['treetable', 'table', 'layer'], function () { var table = layui.table; var layer = layui.layer; var treetable = layui.treetable; //渲染表格 var renderTable = function(){ layer.load(2); //加载层 treetable.render({ height: 'full-160', id:'menu', treeColIndex: 1, //树形图标显示在第几列 treeSpid: '0', //最上级的父级id treeIdName: 'id', //id字段的名称 treePidName: 'parentId', //pid字段的名称,父级菜单id treeDefaultClose: false, //是否默认折叠 treeLinkage: false, //父级展开时是否自动展开所有子级 elem: '#menu', //表格id url: 'menu/treedata', toolbar: '#toolbarDemo', page: false, cols: [ [ {type:'radio'}, {field: 'name', title: '菜单名称'}, {field: 'url' , title: '地址'}, {field: 'icon' , hide : true, title: '图标'}, {field: 'idx', title: '排序'} ] ], //数据渲染完的回调 done: function () { //关闭加载 layer.closeAll('loading'); } }) }; renderTable(); table.on('toolbar(menu)', function(obj){ var checkStatus = table.checkStatus('menu'); var data = checkStatus.data; if(obj.event === 'add'){ var parentId = data.length==0? 0 : data[0].id; $.get('menu/edit', {parentId: parentId}, function(data){ layer.open({ type: 1, title: '新增', area: ['530px'], content: data, btn: ['提交', '退出'], yes:function(){ }, success:function(layero,index){ layui.use('form',function(){ var form=layui.form; layero.addClass('layui-form'); var submitBtn=layero.find('.layui-layer-btn0'); submitBtn.attr('lay-filter','formVerify').attr('lay-submit',''); layero.keydown(function(e){ if(e.keyCode==13){ submitBtn.click(); } }); form.on('submit(formVerify)',function(data){ $.post('menu/save',data.field,function(result){ if(result.success){ layer.close(index); //刷新,重新渲染表格 renderTable(); } layer.msg(result.msg,{offset:'rb'}); }); return false; }); }); } }) }) }else if(obj.event === 'updata'){ if(data.length != 1){ layer.msg("请选择一行进行编辑",{offset:'rb'}); }else{ var id = data[0].id; $.get('menu/edit', {id: id}, function(data){ layer.open({ type: 1, title: '修改', area: ['530px'], content: data, btn: ['提交', '退出'], yes:function(){ }, success:function(layero,index){ layui.use('form',function(){ var form=layui.form; layero.addClass('layui-form'); var submitBtn=layero.find('.layui-layer-btn0'); submitBtn.attr('lay-filter','formVerify').attr('lay-submit',''); layero.keydown(function(e){ if(e.keyCode==13){ submitBtn.click(); } }); form.on('submit(formVerify)',function(data){ $.post('menu/save',data.field,function(result){ if(result.success){ layer.close(index); //刷新,重新渲染表格 renderTable(); } layer.msg(result.msg,{offset:'rb'}); }); return false; }); }); } }) }) } }else if(obj.event === "delete"){ if(data.length != 1){ layer.msg("请选择一行进行删除",{offset:'rb'}); }else{ var id = data[0].id; layer.confirm('确定删除选定行的数据吗?', function(index){ $.post('menu/delete',{id:id},function(result){ if(result.success){ layer.close(index); renderTable(); } layer.msg(result.msg,{offset:'rb'}); }); }); } }else if(obj.event === "refresh"){ renderTable(); } }) }) </script>
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以上为个人经验,希望能给大家一个参考,也希望大家多多支持阿兔在线工具。