vue 使用 ztree 超大量数据，前端树形结构展示

ztree 是一个很经典的基于jquey开发的树结构编辑展示UI组件库。

创建一个文件 ztree.vue，代码如下：

<template>
  <div>
    <div class="ztree vue-giant-tree" :id="ztreeId"></div>
    <div class="treeBox">
      <span slot="footer" class="dialog-footer">
        <el-button
          type="primary"
          @click="pushHandle"
          style="background: #e64e3f; border: none"
          >推 送</el-button
        >
      </span>
    </div>
  </div>
</template>
<script>
import * as $ from "jquery";
if (!window.jQuery) {
  window.jQuery = $;
}
require("@ztree/ztree_v3/js/jquery.ztree.all");
export default {
  props: {
    setting: {
      type: Object,
      require: false,
      default: function () {
        return {};
      },
    },
    nodes: {
      type: Array,
      require: true,
      default: function () {
        return [];
      },
    },
  },
  data() {
    return {
      ztreeId: "ztree_" + parseInt(Math.random() * 1e10),
      ztreeObj: null,
      list: [],
      ztreeSetting: {
        view: {
          showIcon: false, // default to hide icon
        },
        callback: {
          onAsyncError: (...arg) => {
            this.$emit("onAsyncError", ...arg);
          },
          onAsyncSuccess: (...arg) => {
            this.$emit("onAsyncSuccess", ...arg);
          },
          onCheck: (...arg) => {
            this.$emit("onCheck", ...arg);
          },
          onClick: (...arg) => {
            this.$emit("onClick", ...arg);
          },
          onCollapse: (...arg) => {
            this.$emit("onCollapse", ...arg);
          },
          onDblClick: (...arg) => {
            this.$emit("onDblClick", ...arg);
          },
          onDrag: (...arg) => {
            this.$emit("onDrag", ...arg);
          },
          onDragMove: (...arg) => {
            this.$emit("onDragMove", ...arg);
          },
          onDrop: (...arg) => {
            this.$emit("onDrop", ...arg);
          },
          onExpand: (...arg) => {
            this.$emit("onExpand", ...arg);
          },
          onMouseDown: (...arg) => {
            this.$emit("onMouseDown", ...arg);
          },
          onMouseUp: (...arg) => {
            this.$emit("onMouseUp", ...arg);
          },
          onRemove: (...arg) => {
            this.$emit("onRemove", ...arg);
          },
          onRename: (...arg) => {
            this.$emit("onRename", ...arg);
          },
          onRightClick: (...arg) => {
            this.$emit("onRightClick", ...arg);
          },
        },
      },
    };
  },
  methods: {
    pushHandle() {
      var zTree = $.fn.zTree.getZTreeObj(this.ztreeId);
      var dataNodes = [],
        nodes = zTree.getCheckedNodes(true);
      var users = "";
      if (0 === nodes.length) {
        this.$alert("请选择", "提示", {
          confirmButtonText: "确定",
          callback: (action) => {},
        });
        return;
      }
      let count = 0;
      for (var i = 0; i < nodes.length; i++) {
        if (nodes[i].is_last == 1) {
          dataNodes.push(nodes[i].id);
          users += nodes[i].id + ",";
        }
        count++;
        if (count >= nodes.length) {
          if (dataNodes.length == 0) {
            this.$alert("请选择人员", "提示", {
              confirmButtonText: "确定",
              callback: (action) => {},
            });
            return;
          } else {
            users = users.slice(0, -1);
            this.$emit("pushHandleData", users);
          }
        }
      }
    },
  },
  watch: {
    nodes: {
      handler: function (nodes) {
        this.list = nodes;
        // update tree
        if (this.ztreeObj) {
          this.ztreeObj.destroy();
        }
        this.$nextTick(() => {
          this.ztreeObj = $.fn.zTree.init(
            $("#" + this.ztreeId),
            Object.assign({}, this.ztreeSetting, this.setting),
            this.list
          );
          // var zTree = $.fn.zTree.getZTreeObj(this.ztreeId);
          // var datas = nodes.split(',');
          // for (let i = 0; i < datas.length; i++) {
          //   var node = zTree.getNodesByParam("id", datas[i], null)[0];//根据id获取节点
          //   zTree.checkNode(node, true, true);//选中节点
          // zTree.setChkDisabled(node, true);// 禁止勾选节点
          // }
          this.$emit("onCreated", this.ztreeObj);
        });
      },
      deep: true,
      immediate: true,
    },
  },
};
</script>
 
<style>
/* beauty ztree! */
.ztree {
  text-align: left;
  font-size: 14px;
}
.treeBox {
  display: flex;
  justify-content: center;
  margin-top: 10px;
}
.vue-giant-tree li {
  list-style-type: none;
  white-space: nowrap;
  outline: none;
}
.vue-giant-tree li ul {
  position: relative;
  padding: 0 0 0 20px;
  margin: 0;
}
.vue-giant-tree .line:before {
  position: absolute;
  top: 0;
  left: 10px;
  height: 100%;
  content: "";
  border-right: 1px dotted #dbdbdb;
}
.vue-giant-tree .roots_docu:before,
.vue-giant-tree .roots_docu:after,
.vue-giant-tree .center_docu:before,
.vue-giant-tree .bottom_docu:before,
.vue-giant-tree .center_docu:after,
.vue-giant-tree .bottom_docu:after {
  position: absolute;
  content: "";
  border: 0 dotted #dbdbdb;
}
.vue-giant-tree .roots_docu:before {
  left: 10px;
  height: 50%;
  top: 50%;
  border-left-width: 1px;
}
.vue-giant-tree .roots_docu:after {
  top: 50%;
  left: 11px;
  width: 50%;
  border-top-width: 1px;
}
.vue-giant-tree .center_docu:before {
  left: 10px;
  height: 100%;
  border-left-width: 1px;
}
.vue-giant-tree .center_docu:after {
  top: 50%;
  left: 11px;
  width: 50%;
  border-top-width: 1px;
}
.vue-giant-tree .bottom_docu:before {
  left: 10px;
  height: 50%;
  border-left-width: 1px;
}
.vue-giant-tree .bottom_docu:after {
  top: 50%;
  left: 11px;
  width: 50%;
  border-top-width: 1px;
}
.vue-giant-tree li a {
  display: inline-block;
  line-height: 22px;
  height: 22px;
  margin: 0;
  cursor: pointer;
  transition: none;
  vertical-align: middle;
  color: #555555;
}
.vue-giant-tree .node_name {
  display: inline-block;
  padding: 0 3px;
  border-radius: 4px;
}
.vue-giant-tree .curSelectedNode .node_name {
  color: #000;
  background-color: #c9e9f7;
}
.vue-giant-tree .curSelectedNode_Edit {
  height: 20px;
  opacity: 0.8;
  color: #000;
  border: 1px #6cc2e8 solid;
  background-color: #9dd6f0;
}
.vue-giant-tree .tmpTargetNode_inner {
  opacity: 0.8;
  color: #fff;
  background-color: #4fcbf0;
  filter: alpha(opacity=80);
}
.vue-giant-tree .rename {
  font-size: 12px;
  line-height: 22px;
  width: 80px;
  height: 22px;
  margin: 0;
  padding: 0;
  vertical-align: top;
  border: 0;
  background: none;
}
.vue-giant-tree .button {
  position: relative;
  display: inline-block;
  line-height: 22px;
  height: 22px;
  width: 22px;
  cursor: pointer;
  text-align: center;
  vertical-align: middle;
}

.vue-giant-tree .button.edit {
  color: #25ae88;
}
.vue-giant-tree .button.remove {
  color: #cb4042;
}
.vue-giant-tree .button.chk {
  position: relative;
  width: 14px;
  height: 14px;
  margin: 0 4px 0 0;
  border: 1px solid #d7dde4;
  border-radius: 2px;
  background: #fff;
}
.vue-giant-tree .chk.radio_true_full,
.vue-giant-tree .chk.radio_false_full,
.vue-giant-tree .chk.radio_true_full_focus,
.vue-giant-tree .chk.radio_false_full_focus,
.vue-giant-tree .chk.radio_false_disable,
.vue-giant-tree .chk.radio_true_disable,
.vue-giant-tree .chk.radio_true_part,
.vue-giant-tree .chk.radio_false_part,
.vue-giant-tree .chk.radio_true_part_focus,
.vue-giant-tree .chk.radio_false_part_focus {
  border-radius: 8px;
}
.vue-giant-tree .button.chk:after {
  position: absolute;
  top: 1px;
  left: 4px;
  width: 4px;
  height: 8px;
  content: "";
  transition: -webkit-transform 0.2s ease-in-out;
  transition: transform 0.2s ease-in-out;
  transition: transform 0.2s ease-in-out, -webkit-transform 0.2s ease-in-out;
  -webkit-transform: rotate(0deg) scale(0);
  transform: rotate(0deg) scale(0);
  border-right: 2px solid #fff;
  border-bottom: 2px solid #fff;
}
.vue-giant-tree .button.checkbox_false_full_focus {
  border-color: #ccc;
}
.vue-giant-tree .button.checkbox_true_full,
.vue-giant-tree .button.checkbox_true_full_focus,
.vue-giant-tree .button.checkbox_true_part,
.vue-giant-tree .button.checkbox_true_part_focus,
.vue-giant-tree .button.checkbox_true_disable {
  border-color: #39f;
  background-color: #39f;
}
.vue-giant-tree .button.checkbox_true_full:after,
.vue-giant-tree .button.checkbox_true_full_focus:after,
.vue-giant-tree .button.checkbox_true_disable:after {
  -webkit-transform: rotate(45deg) scale(1);
  transform: rotate(45deg) scale(1);
}
.vue-giant-tree .button.checkbox_true_part:after,
.vue-giant-tree .button.checkbox_true_part_focus:after {
  top: 5px;
  left: 2px;
  width: 10px;
  height: 1px;
  -webkit-transform: rotate(0deg) scale(1);
  transform: rotate(0deg) scale(1);
  border-right: 0;
}
.vue-giant-tree .button.radio_true_full,
.vue-giant-tree .chk.radio_true_full_focus,
.vue-giant-tree .chk.radio_true_part,
.vue-giant-tree .chk.radio_true_part_focus {
  border-color: #39f;
}
.vue-giant-tree .button.radio_true_full:after,
.vue-giant-tree .chk.radio_true_full_focus:after,
.vue-giant-tree .chk.radio_true_part:after,
.vue-giant-tree .chk.radio_true_part_focus:after {
  top: 3px;
  left: 3px;
  width: 8px;
  -webkit-transform: rotate(0deg) scale(1);
  transform: rotate(0deg) scale(1);
  border: 0;
  border-radius: 4px;
  background: #39f;
}
.vue-giant-tree .button.checkbox_true_disable,
.vue-giant-tree .button.checkbox_false_disable,
.vue-giant-tree .chk.radio_false_disable,
.vue-giant-tree .chk.radio_true_disable {
  cursor: not-allowed;
}
.vue-giant-tree .button.checkbox_false_disable {
  background-color: #f3f3f3;
}
.vue-giant-tree .button.noline_close:before,
.vue-giant-tree .button.noline_open:before,
.vue-giant-tree .button.root_open:before,
.vue-giant-tree .button.root_close:before,
.vue-giant-tree .button.roots_open:before,
.vue-giant-tree .button.roots_close:before,
.vue-giant-tree .button.bottom_open:before,
.vue-giant-tree .button.bottom_close:before,
.vue-giant-tree .button.center_open:before,
.vue-giant-tree .button.center_close:before {
  position: absolute;
  top: 5px;
  left: 5px;
  content: "";
  transition: -webkit-transform ease 0.3s;
  transition: transform ease 0.3s;
  transition: transform ease 0.3s, -webkit-transform ease 0.3s;
  -webkit-transform: rotateZ(0deg);
  transform: rotateZ(0deg);
  -webkit-transform-origin: 25% 50%;
  transform-origin: 25% 50%;
  border: 6px solid;
  border-color: transparent transparent transparent #666;
}
.vue-giant-tree .button.noline_open:before,
.vue-giant-tree .button.root_open:before,
.vue-giant-tree .button.roots_open:before,
.vue-giant-tree .button.bottom_open:before,
.vue-giant-tree .button.center_open:before {
  -webkit-transform: rotateZ(90deg);
  transform: rotateZ(90deg);
}
.vue-giant-tree .button.ico_loading {
  margin-right: 2px;
  background: url("data:image/gif;base64,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")
    0 center no-repeat;
}
.vue-giant-tree .tmpTargetzTree {
  opacity: 0.8;
  background-color: #2ea9df;
  filter: alpha(opacity=80);
}
.vue-giant-tree .tmpzTreeMove_arrow {
  position: absolute;
  width: 18px;
  height: 18px;
  color: #4fcbf0;
}
</style>
<style>
ul.ztree.zTreeDragUL {
  margin: 0;
  padding: 0;
  position: absolute;
  overflow: hidden;
  background-color: #dedede;
  border: 1px #4fcbf0 dotted;
  border-radius: 4px;
  opacity: 0.7;
}

.zTreeMask {
  position: absolute;
  z-index: 10000;
  opacity: 0;
  background-color: #cfcfcf;
}
</style>

在使用的页面中引入

注意：从接口获取到的树形数据中的 pId 字段名中间的 ‘I’ 是大写，支持非树形结构数据，只需 pId 和 id 都有，ztree根据id及pId层级关系构建树结构

<template>
  <div style="position: relative; margin: 15px">
    <el-button
      type="primary"
      icon="el-icon-document-copy"
      size="small"
      @click="openZtree"
    >保存</el-button>

    <el-dialog
      title="通过组织机构选择"
      :visible.sync="dialogZTreeVisible"
      top="1%"
      width="40%"
    >
      <!-- 操作 -->
      <div class="box">
        <div v-if="loading">
          <zTreeLoadings></zTreeLoadings>
        </div>
        <div v-else>
          <ZTree
            :setting="setting"
            :nodes="nodes"
            @onClick="onClick"
            @onCheck="onCheck"
            @onCreated="handleCreated"
            @pushHandleData="pushHandleData"
          />
        </div>
      </div>
    </el-dialog>
    <wp-message
      v-if="message"
      :message="message"
      @close="closeMessage"
      @isOk="closeMessage"
    ></wp-message>
  </div>
</template>

<script>
import * as Api from "@/api/wp-questionnaire";// 接口文件
import WpMessage from "@/components/wp-message"; // 弹窗组件
import ZTree from "@/components/wp-common/zTree";
import zTreeLoadings from "@/components/wp-common/loading";
export default {
  components: {
    WpMessage,
    ZTree,
    zTreeLoadings
  },
  data() {
    return {
      dialogZTreeVisible: false,
      nodes: [],
      showIndex: 0,
      ztreeObj: null,
      setting: {
        check: {
          enable: true,
          //这里设置是否显示复选框
          chkStyle: "checkbox",
          chkboxType: {
            Y: "s",
            N: "ps",
          }, //设置复选框是否与 父/子 级相关联
        },
        data: {
          simpleData: {
            enable: true, //设置是否启用简单数据格式（zTree支持标准数据格式跟简单数据格式）
            idKey: "id", //设置启用简单数据格式时id对应的属性名称
            pidKey: "pId", //设置启用简单数据格式时parentId对应的属性名称,ztree根据id及pid层级关系构建树结构
            rootPId: null, // 根节点的parentId设置为null
          },
          key: {
            name: "name",
          },
        },
        view: {
          selectedMulti: true, //设置是否能够同时选中多个节点
          showIcon: false, //设置是否显示节点图标
          showLine: true, //设置是否显示节点与节点之间的连线
        },
        callback: {
          onClick: function (e, treeId, treeNode) {
            checkNode_user = treeNode;
          },
        },
      },
      loading: false
    };
  },
  methods: {
    // 推送数据
    pushHandleData(val) {
      let param = {
        Id: id, //推送的数据条Id
        userIds: val, //推送用户列表，多个用户以逗号分隔
      };
      let peosonNum = val.split(",");
      // 调用推送的接口
      Api.questionUserAdd(param).then((res) => {
        if (res.data.code == 200) {
          this.toMessage("推送成功！共推送" + peosonNum.length + "人");
          this.dialogZTreeVisible = false;
          // this.$eventBus.$emit("getTableDataList");// 其他页面刷新页面，如果不需要可不加
        } else if (res.data.code == 504) {
          this.$notify({
            title: "提示",
            message: "当前推送数据量过大，请稍后刷新查看！",
            type: "warning",
            duration: 2000,
          });
          this.dialogZTreeVisible = false;
        } else {
          this.$message({
            type: "error",
            message: res.msg,
          });
        }
      });
    },
    // 获取组织树数据
    getZtreeData() {
      this.dialogZTreeVisible = true
      this.loading = true
      let param = {
        type: 3,
        id: String(this.currentQuertionId),
      };
      Api.searchUserTreeList(param).then((res) => {
        if (res.data.code == 200) {
          this.nodes = res.data.data;
          this.loading = false
        }
      });
    },
    // 打开树形结构弹窗
    openZtree() {
      this.getZtreeData();
      this.dialogZTreeVisible = true;
    },
    clickRemove(treeNode) {
      console.log("remove", treeNode);
      this.ztreeObj && this.ztreeObj.removeNode(treeNode);
    },
    onClick(evt, treeId, treeNode) {
      // 点击事件
      console.log(evt.type, treeNode);
    },
    onCheck(evt, treeId, treeNode) {
      // 选中事件
      console.log(evt.type, treeNode);
    },
    handleCreated(ztreeObj) {
      this.ztreeObj = ztreeObj;
      ztreeObj.expandNode(ztreeObj.getNodes()[0], true);
    }
  },
};
</script>

创建弹窗组件 index.vue：

其中 xhnrtp.png 就是个关闭图片

<template>
  <div class="wp-message">
    <div class="message-container">
      <h4 class="message-header">
        信息
        <img src="@/assets/login/xhnrtp.png" alt="" @click="close" />
      </h4>
      <div class="message-main">
        {{ message }}
      </div>
      <div style="text-align: center; margin-bottom: 10px">
        <el-button
          type="primary"
          icon="el-icon-document-copy"
          size="small"
          @click="handelOk"
          >确定</el-button
        >
      </div>
    </div>
  </div>
</template>

<script>
export default {
  props: {
    message: {
      type: String,
      default: "",
    },
  },
  methods: {
    close() {
      this.$emit("close");
    },
    handelOk() {
      this.$emit("isOk");
    },
  },
};
</script>

<style lang="scss" scoped>
.wp-message {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: 9999;
  background-color: #00000060;
  .message-container {
    width: 300px;
    border-radius: 4px;
    background-color: #fff;
    position: absolute;
    left: 50%;
    top: 300px;
    transform: translateX(-50%);
    padding-bottom: 10px;
    .message-header {
      background-color: #eee;
      font-weight: normal;
      padding: 0px 20px;
      border-radius: 4px 4px 0px 0px;
      margin: 0px;
      height: 40px;
      line-height: 40px;
      color: #333;
      position: relative;
      img {
        position: absolute;
        right: 20px;
        top: 11px;
        cursor: pointer;
      }
    }
    .message-main {
      height: 100px;
      text-align: center;
      color: #333;
      font-size: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 20px;
    }
  }
}
</style>

由于数据量大加载比较慢，可创建一个加载组件 loading.vue

<template>
  <div class="box">
    <img class="imgs" src="@/assets/loading.gif" />
  </div>
</template>

<script>
export default {
  methods: {}
}
</script>
<style scoped>
.box {
  display: flex;
  justify-content: center;
  align-items: center;
}
.imgs {
  width: 50px;
  height: 50px;
}
</style>

其中的 loading.gif 就是个动态图。