大型商城:商品服务API-三级分类

@Configuration // gateway
public class GulimallCorsConfiguration {

    @Bean // 添加过滤器
    public CorsWebFilter corsWebFilter(){
        // 基于url跨域，选择reactive包下的
        UrlBasedCorsConfigurationSource source=new UrlBasedCorsConfigurationSource();
        // 跨域配置信息
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        // 允许跨域的头
        corsConfiguration.addAllowedHeader("*");
        // 允许跨域的请求方式
        corsConfiguration.addAllowedMethod("*");
        // 允许跨域的请求来源
        corsConfiguration.addAllowedOrigin("*");
        // 是否允许携带cookie跨域
        corsConfiguration.setAllowCredentials(true);
        
       // 任意url都要进行跨域配置
        source.registerCorsConfiguration("/**",corsConfiguration);
        return new CorsWebFilter(source);
    }
}

<!--  -->
<template>
  <div>
    <el-switch
      v-model="draggable"
      active-text="开启拖拽排序"
      inactive-text="关闭拖拽排序"
    >
    </el-switch>
    <el-button @click="batchSave">批量保存</el-button>
    <el-button type="danger" @click="batchDelete">批量删除</el-button>
    <!--
      draggable: 拖拽是否开启 TRUE FALSE
       @node-drop="handleDrop" ：拖拽成功完成时触发的事件
       根据返回的 TRUE与FALSE 判断能不能完成拖拽
    -->
    <el-tree
      :data="menus"
      :props="defaultProps"
      @node-click="handleNodeClick"
      :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 type="text" size="mini" @click="() => edit(data)">
            修改
          </el-button>
          <el-button
            v-if="node.level <= 2"
            type="text"
            size="mini"
            @click="() => append(data)"
          >
            添加下級
          </el-button>
          <el-button
            v-if="node.childNodes.length == 0"
            type="text"
            size="mini"
            @click="() => remove(node, data)"
          >
            刪除
          </el-button>
        </span>
      </span>
    </el-tree>

    <el-dialog :title="title" :visible.sync="dialogVisible" width="30%">
      <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.roductUnit" 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》';

import { add } from "../../../mock/modules/job-schedule";

export default {
  // import引入的组件需要注入到对象中才能使用
  components: {},
  data() {
    return {
      pCid: [],
      draggable: false,
      updateNodes: [],
      maxLevel: 0,
      title: "",
      dialogType: "",
      category: {
        name: "",
        parentCid: 0,
        catLevel: 0,
        showStatus: 1,
        sort: 0,
        productUnit: "",
        icon: "",
        catId: null,
      },
      dialogVisible: false,
      menus: [],
      expandedKey: [],
      defaultProps: {
        children: "children",
        label: "name",
      },
    };
  },
  // 监听属性 类似于data概念
  computed: {},
  // 监控data中的数据变化
  watch: {},
  // 方法集合
  methods: {
    handleNodeClick(data) {
      console.log(data);
    },
    submitData() {
      if (this.dialogType == "edit") {
        this.editCategory();
      }
      if (this.dialogType == "add") {
        this.addCategory();
      }
    },
    batchDelete() {
      let catIds = [];
      let checkedNodes = this.$refs.menuTree.getCheckedNodes();
      for (let i = 0; i < checkedNodes.length; i++) {
        catIds.push(checkedNodes[i].catId);
      }
      this.$confirm(`确认删除【${catIds}】菜单？`, "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(() => {
          this.$http({
            url: this.$http.adornUrl("/product/category/delete"),
            method: "post",
            data: this.$http.adornData(catIds, false),
          }).then(({ data }) => {
            this.$notify({
              title: "成功",
              message: "批量删除成功！",
              type: "success",
            });
            //刷新出新的菜单
            this.getMenus();
            //设置需要展开的默认菜单
            this.expandedKey = [node.parent.data.catId];
          });
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除",
          });
        });
    },
    batchSave() {
      this.$http({
        url: this.$http.adornUrl("/product/category/update/sort"),
        method: "post",
        data: this.$http.adornData(this.updateNodes, false),
      }).then(({ data }) => {
        this.$notify({
          title: "成功",
          message: "菜单修改成功！",
          type: "success",
        });
        //刷新
        this.getMenus();
        //设置默认打开的菜单
        this.expandedKey = this.pCid;
        this.updateNodes = [];
        this.maxLevel = 0;
        //this.pCid = 0 ;
      });
    },
    /*
    	拖拽成功完成时触发的事件
      共四个参数，依次为：被拖拽节点对应的 Node、结束拖拽时最后进入的节点、被拖拽节点的放置位置（before、after、inner）、event
    */
    handleDrop(draggingNode, dropNode, dropType, ev) {
      //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;
        siblings = dropNode.parent.childNodes;
      } else {
        pCid = dropNode.data.catId;
        siblings = dropNode.childNodes;
      }
      //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.updataChildNodeLevel(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 });
        }
      }
      this.pCid.push(pCid);
      //3.当前拖拽节点的最新层级
      console.log("new");
      console.log("new", this.updateNodes);
    },
    updataChildNodeLevel(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.updataChildNodeLevel(node.childNodes[i]);
        }
      }
    },
    allowDrop(draggingNode, dropNode, type) {
      //:allow-drop  根据返回的 TRUE与FALSE 判断能不能完成拖拽
      // 1.三级菜单，所以被拖拽的当前节点以及所在的父节点  总层数不大于3
      // 1>.被拖拽的当前节点总层数
      console.log("a:", 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;
      //
      if (type == "inner") {
        return deep + dropNode.level <= 3;
      } else {
        return deep + dropNode.parent.level <= 3;
      }
    },
    countNodeLevel(node) {
      //找到所有的子节点，求最大深度
      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) {
      this.dialogType = "edit";
      this.title = "修改";
      this.dialogVisible = true;
      this.$http({
        url: this.$http.adornUrl(`/product/category/info/${data.catId}`),
        methods: "get",
      }).then(({ data }) => {
        console.log("ssss", data);
        this.category.name = data.data.name;
        this.category.catId = data.data.catId;
        this.category.icon = data.data.icon;
        this.category.productUnit = data.data.productUnit;
      });
    },
    editCategory() {
      var { catId, name, icon, productUnit } = this.category;
      this.$http({
        url: this.$http.adornUrl("/product/category/update"),
        method: "post",
        data: this.$http.adornData({ catId, name, icon, productUnit }, false),
      }).then(({ data }) => {
        this.$notify({
          title: "成功",
          message: "菜单修改成功！",
          type: "success",
        });
        //关闭对话框
        this.dialogVisible = false;
        //刷新
        this.getMenus();
        //设置默认打开的菜单
        this.expandedKey = [this.category.parentCid];
      });
    },
    getMenus() {
      this.$http({
        url: this.$http.adornUrl("/product/category/list/tree"),
        methods: "get",
      }).then(({ data }) => {
        console.log(data.data);
        this.menus = data.data;
      });
    },
    append(data) {
      (this.title = "新增下级"), (this.dialogVisible = true);
      this.dialogType = "add";
      this.category.parentCid = data.catId;
      this.category.catLevel = data.catLevel + 1;
      this.category.catId = null;
      this.category.name = "";
      this.category.icon = "";
      this.category.productUnit = "";
      this.category.sort = 0;
      this.category.showStatus = 1;
    },
    // 提交三級分類
    addCategory() {
      this.$http({
        url: this.$http.adornUrl("/product/category/save"),
        method: "post",
        data: this.$http.adornData(this.category, false),
      }).then(({ data }) => {
        this.$notify({
          title: "成功",
          message: "添加成功！",
          type: "success",
        });
        //关闭对话框
        this.dialogVisible = false;
        //刷新
        this.getMenus();
        //设置默认打开的菜单
        this.expandedKey = [this.category.parentCid];
      });
    },
    remove(node, data) {
      var ids = [data.catId];

      this.$confirm(`确认删除【${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.$http.adornData(ids, false),
          }).then(({ data }) => {
            this.$notify({
              title: "成功",
              message: "删除成功！",
              type: "success",
            });
            //刷新出新的菜单
            this.getMenus();
            //设置需要展开的默认菜单
            this.expandedKey = [node.parent.data.catId];
          });
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除",
          });
        });
      console.log("hhh", node);
    },
  },
  // 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>