目录
1.删除功能的实现
2.新增功能的实现
3.修改功能的实现
4.拖拽功能
1.删除功能的实现
1.1逻辑删除
逻辑删除：不删除数据库中真实的数据，用指定字段，显示的表示是否删除
- 1.在application.yml中加入配置
mybatis-plus:
global-config:
db-config:
logic-delete-value: 1 #1代表删除
logic-not-delete-value: 0 #0代表没删除- 2.实体类字段添加@TableLogic注解
/**
* 是否显示[0-不显示，1显示]
*/
@TableLogic(value = "1",delval = "0")
private Integer showStatus;@TableLogic的属性值：
1.2 service层删除
1.检查删除的菜单是否被其他地方引用
2.controller层直接调用service
/**
* 删除
*
* @param asList
*/
@Override
public void removeMenuByIds(List<Long> asList) {
//TODO 1.检查当前删除的菜单，是否被其他地方引用
baseMapper.deleteBatchIds(asList);
}2.新增功能的实现
因为后端已经生成了save添加功能的接口，所以只对前端代码做改动即可
提示：后端带有@RequestBody注解的要用post请求
<template>
<div>
<el-tree
:data="menus"
:props="defaultProps"
:expand-on-click-node="false"
show-checkbox
node-key="catId"
:default-expanded-keys="expandedKey"
>
<span class="custom-tree-node" slot-scope="{ node, data }">
<span>{{ node.label }}</span>
<span>
<el-button
v-if="node.level <= 2"
type="text"
size="mini"
@click="() => append(data)"
>
Append
</el-button>
<el-button
v-if="node.childNodes.length == 0"
type="text"
size="mini"
@click="() => remove(node, data)"
>
Delete
</el-button>
</span>
</span>
</el-tree>
<el-dialog
title="提示"
:visible.sync="dialogVisible"
width="30%"
>
<el-form :model="category">
<el-form-item label="分类名成" >
<el-input v-model="category.name" autocomplete="off"></el-input>
</el-form-item>
</el-form>
<span slot="footer" class="dialog-footer">
<el-button @click="dialogVisible = false">取 消</el-button>
<el-button type="primary" @click="addCategory"
>确 定</el-button
>
</span>
</el-dialog>
</div>
</template>
<script>
export default {
data () {
return {
category: {name: '', parentCid: 0, catLevel: 0, showStatus: 1, sort: 0},
dialogVisible: false,
menus: [],
expandedKey: [],
defaultProps: {
children: 'children',
label: 'name'
}
}
},
methods: {
handleNodeClick (data) {
console.log(data)
},
getMenus () {
this.$http({
url: this.$http.adornUrl('/product/category/list/tree'),
method: 'get'
}).then(({ data }) => {
console.log('获取成功菜单数据', data.data)
this.menus = data.data
})
},
append (data) {
console.log('append', data)
this.dialogVisible = true
this.category.parentCid = data.catId
this.category.catLevel = data.catLevel * 1 + 1
},
// 添加三级分类
addCategory () {
console.log('提交三级分类数据', this.category)
this.$http({
url: this.$http.adornUrl('/product/category/save'),
method: 'post',
data: this.$http.adornData(this.category, false)
}).then(({ data }) => {
this.$message({
message: '菜单保存成功',
type: 'success'
})
// 关闭对话框
this.dialogVisible = false
// 刷新出新的菜单
this.getMenus()
// 设置默认要展开的菜单
this.expandedKey = [this.category.parentCid]
})
},
remove (node, data) {
var ids = [data.catId]
this.$confirm(`是否删除【${data.name}】菜单？`, '提示', {
confirmButtonText: '确定',
cancelButtonText: '取消',
type: 'warning'
})
.then(() => {
// 发送post请求
this.$http({
url: this.$http.adornUrl('/product/category/delete'),
method: 'post',
data: this.$http.adornData(ids, false)
}).then(({ data }) => {
this.$message({
message: '菜单删除成功',
type: 'success'
})
// 刷新出新菜单
this.getMenus()
// 设置需要默认展开的菜单
this.expandedKey = [node.parent.data.catId]
})
})
.catch(() => {})
console.log('remove', node, data)
}
},
created () {
this.getMenus()
}
}
</script>
3.修改功能的实现
后端用直接生成好的接好，直接调用
/**
* 批量修改
*/
@RequestMapping("/update/sort")
public R updateSort(@RequestBody CategoryEntity[] category){
categoryService.updateBatchById(Arrays.asList(category));
return R.ok();
}
/**
* 修改
*/
@RequestMapping("/update")
//@RequiresPermissions("product:category:update")
public R update(@RequestBody CategoryEntity category){
categoryService.updateById(category);
return R.ok();
}前端直接调用接口即可~（全部放到后面）
4.拖拽功能
全部都是vue+elementUI完成，直接上代码
<template>
<div>
<el-switch
v-model="draggable"
active-text="开启拖拽"
inactive-text="关闭拖拽"
></el-switch>
<el-button v-if="draggable" @click="batchSave">批量保存</el-button>
<el-button type="danger" @click="batchDelete">批量删除</el-button>
<el-tree
:data="menus"
:props="defaultProps"
:expand-on-click-node="false"
show-checkbox
node-key="catId"
:default-expanded-keys="expandedKey"
:draggable="draggable"
:allow-drop="allowDrop"
@node-drop="handleDrop"
ref="menuTree"
>
<span class="custom-tree-node" slot-scope="{ node, data }">
<span>{{ node.label }}</span>
<span>
<el-button
v-if="node.level <= 2"
type="text"
size="mini"
@click="() => append(data)"
>添加</el-button
>
<el-button type="text" size="mini" @click="edit(data)"
>修改</el-button
>
<el-button
v-if="node.childNodes.length == 0"
type="text"
size="mini"
@click="() => remove(node, data)"
>删除</el-button
>
</span>
</span>
</el-tree>
<el-dialog
:title="title"
:visible.sync="dialogVisible"
width="30%"
:close-on-click-modal="false"
>
<el-form :model="category">
<el-form-item label="分类名称">
<el-input v-model="category.name" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="图标">
<el-input v-model="category.icon" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="计量单位">
<el-input
v-model="category.productUnit"
autocomplete="off"
></el-input>
</el-form-item>
</el-form>
<span slot="footer" class="dialog-footer">
<el-button @click="dialogVisible = false">取 消</el-button>
<el-button type="primary" @click="submitData">确 定</el-button>
</span>
</el-dialog>
</div>
</template>
<script>
//这里可以导入其他文件（比如：组件，工具js，第三方插件js，json文件，图片文件等等）
//例如：import 《组件名称》 from '《组件路径》';
export default {
//import引入的组件需要注入到对象中才能使用
components: {},
props: {},
data() {
return {
pCid: [],
draggable: false,
updateNodes: [],
maxLevel: 0,
title: "",
dialogType: "", //edit,add
category: {
name: "",
parentCid: 0,
catLevel: 0,
showStatus: 1,
sort: 0,
productUnit: "",
icon: "",
catId: null,
},
dialogVisible: false,
menus: [],
expandedKey: [],
defaultProps: {
children: "children",
label: "name",
},
};
},
//计算属性 类似于data概念
computed: {},
//监控data中的数据变化
watch: {},
//方法集合
methods: {
getMenus() {
this.$http({
url: this.$http.adornUrl("/product/category/list/tree"),
method: "get",
}).then(({ data }) => {
console.log("成功获取到菜单数据...", data.data);
this.menus = data.data;
});
},
batchDelete() {
let catIds = [];
let checkedNodes = this.$refs.menuTree.getCheckedNodes();
console.log("被选中的元素", checkedNodes);
for (let i = 0; i < checkedNodes.length; i++) {
catIds.push(checkedNodes[i].catId);
}
this.$confirm(`是否批量删除【${catIds}】菜单?`, "提示", {
confirmButtonText: "确定",
cancelButtonText: "取消",
type: "warning",
})
.then(() => {
this.$http({
url: this.$http.adornUrl("/product/category/delete"),
method: "post",
data: this.$http.adornData(catIds, false),
}).then(({ data }) => {
this.$message({
message: "菜单批量删除成功",
type: "success",
});
this.getMenus();
});
})
.catch(() => {});
},
batchSave() {
this.$http({
url: this.$http.adornUrl("/product/category/update/sort"),
method: "post",
data: this.$http.adornData(this.updateNodes, false),
}).then(({ data }) => {
this.$message({
message: "菜单顺序等修改成功",
type: "success",
});
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = this.pCid;
this.updateNodes = [];
this.maxLevel = 0;
// this.pCid = 0;
});
},
handleDrop(draggingNode, dropNode, dropType, ev) {
console.log("handleDrop: ", draggingNode, dropNode, dropType);
//1、当前节点最新的父节点id
let pCid = 0;
let siblings = null;
if (dropType == "before" || dropType == "after") {
pCid =
dropNode.parent.data.catId == undefined
? 0
: dropNode.parent.data.catId;
siblings = dropNode.parent.childNodes;
} else {
pCid = dropNode.data.catId;
siblings = dropNode.childNodes;
}
this.pCid.push(pCid);
//2、当前拖拽节点的最新顺序，
for (let i = 0; i < siblings.length; i++) {
if (siblings[i].data.catId == draggingNode.data.catId) {
//如果遍历的是当前正在拖拽的节点
let catLevel = draggingNode.level;
if (siblings[i].level != draggingNode.level) {
//当前节点的层级发生变化
catLevel = siblings[i].level;
//修改他子节点的层级
this.updateChildNodeLevel(siblings[i]);
}
this.updateNodes.push({
catId: siblings[i].data.catId,
sort: i,
parentCid: pCid,
catLevel: catLevel,
});
} else {
this.updateNodes.push({ catId: siblings[i].data.catId, sort: i });
}
}
//3、当前拖拽节点的最新层级
console.log("updateNodes", this.updateNodes);
},
updateChildNodeLevel(node) {
if (node.childNodes.length > 0) {
for (let i = 0; i < node.childNodes.length; i++) {
var cNode = node.childNodes[i].data;
this.updateNodes.push({
catId: cNode.catId,
catLevel: node.childNodes[i].level,
});
this.updateChildNodeLevel(node.childNodes[i]);
}
}
},
allowDrop(draggingNode, dropNode, type) {
//1、被拖动的当前节点以及所在的父节点总层数不能大于3
//1）、被拖动的当前节点总层数
console.log("allowDrop:", draggingNode, dropNode, type);
//
this.countNodeLevel(draggingNode);
//当前正在拖动的节点+父节点所在的深度不大于3即可
let deep = Math.abs(this.maxLevel - draggingNode.level) + 1;
console.log("深度：", deep);
// this.maxLevel
if (type == "inner") {
// console.log(
// `this.maxLevel：${this.maxLevel}；draggingNode.data.catLevel：${draggingNode.data.catLevel}；dropNode.level：${dropNode.level}`
// );
return deep + dropNode.level <= 3;
} else {
return deep + dropNode.parent.level <= 3;
}
},
countNodeLevel(node) {
//找到所有子节点，求出最大深度
if (node.childNodes != null && node.childNodes.length > 0) {
for (let i = 0; i < node.childNodes.length; i++) {
if (node.childNodes[i].level > this.maxLevel) {
this.maxLevel = node.childNodes[i].level;
}
this.countNodeLevel(node.childNodes[i]);
}
}
},
edit(data) {
console.log("要修改的数据", data);
this.dialogType = "edit";
this.title = "修改分类";
this.dialogVisible = true;
//发送请求获取当前节点最新的数据
this.$http({
url: this.$http.adornUrl(`/product/category/info/${data.catId}`),
method: "get",
}).then(({ data }) => {
//请求成功
console.log("要回显的数据", data);
this.category.name = data.data.name;
this.category.catId = data.data.catId;
this.category.icon = data.data.icon;
this.category.productUnit = data.data.productUnit;
this.category.parentCid = data.data.parentCid;
this.category.catLevel = data.data.catLevel;
this.category.sort = data.data.sort;
this.category.showStatus = data.data.showStatus;
/**
* parentCid: 0,
catLevel: 0,
showStatus: 1,
sort: 0,
*/
});
},
append(data) {
console.log("append", data);
this.dialogType = "add";
this.title = "添加分类";
this.dialogVisible = true;
this.category.parentCid = data.catId;
this.category.catLevel = data.catLevel * 1 + 1;
this.category.catId = null;
this.category.name = "";
this.category.icon = "";
this.category.productUnit = "";
this.category.sort = 0;
this.category.showStatus = 1;
},
submitData() {
if (this.dialogType == "add") {
this.addCategory();
}
if (this.dialogType == "edit") {
this.editCategory();
}
},
//修改三级分类数据
editCategory() {
var { catId, name, icon, productUnit } = this.category;
this.$http({
url: this.$http.adornUrl("/product/category/update"),
method: "post",
data: this.$http.adornData({ catId, name, icon, productUnit }, false),
}).then(({ data }) => {
this.$message({
message: "菜单修改成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
//添加三级分类
addCategory() {
console.log("提交的三级分类数据", this.category);
this.$http({
url: this.$http.adornUrl("/product/category/save"),
method: "post",
data: this.$http.adornData(this.category, false),
}).then(({ data }) => {
this.$message({
message: "菜单保存成功",
type: "success",
});
//关闭对话框
this.dialogVisible = false;
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [this.category.parentCid];
});
},
remove(node, data) {
var ids = [data.catId];
this.$confirm(`是否删除【${data.name}】菜单?`, "提示", {
confirmButtonText: "确定",
cancelButtonText: "取消",
type: "warning",
})
.then(() => {
this.$http({
url: this.$http.adornUrl("/product/category/delete"),
method: "post",
data: this.$http.adornData(ids, false),
}).then(({ data }) => {
this.$message({
message: "菜单删除成功",
type: "success",
});
//刷新出新的菜单
this.getMenus();
//设置需要默认展开的菜单
this.expandedKey = [node.parent.data.catId];
});
})
.catch(() => {});
console.log("remove", node, data);
},
},
//生命周期 - 创建完成（可以访问当前this实例）
created() {
this.getMenus();
},
//生命周期 - 挂载完成（可以访问DOM元素）
mounted() {},
beforeCreate() {}, //生命周期 - 创建之前
beforeMount() {}, //生命周期 - 挂载之前
beforeUpdate() {}, //生命周期 - 更新之前
updated() {}, //生命周期 - 更新之后
beforeDestroy() {}, //生命周期 - 销毁之前
destroyed() {}, //生命周期 - 销毁完成
activated() {}, //如果页面有keep-alive缓存功能，这个函数会触发
};
</script>
<style scoped>
</style>
