这篇文章主要讲解通过JSON数据递归渲染流程图树，如果需要具体静态页面样式，请移步：工作流流程图树结构HTML+CSS_包子源的博客-CSDN博客https://blog.csdn.net/ziwoods/article/details/121640122

首先看一下数据格式，其实和el-tree的数据格式是一样的：

data() {
    return {
      flowArr: [
        {
          taskName: "流程1",
          approverName: "审计测试人员,test1",
          children: [
            {
              taskName: "流程2",
              approverName: "admin,审计局",
              children: [
                { taskName: "流程2", approverName: "admin,审计局" },
                { taskName: "流程2", approverName: "admin,审计局" },
              ],
            },
            {
              taskName: "流程2",
              approverName: "admin,审计局",
              children: [
                { taskName: "流程2", approverName: "admin,审计局" },
                { taskName: "流程2", approverName: "admin,审计局" },
              ],
            },
          ],
        },
        { taskName: "流程3", approverName: "审计单位账号,admin" },
      ]
    };
  },

然后需要封装workTree组件（其实就是递归渲染树结构）：

<template>
  <div>
    <div v-if="list.length == 1">
      <div v-for="(item, index) in list" :key="index" class="branch-one">
        <div class="condition-node-box">
          <div class="line"></div>
          <div class="deal-node-box">
            <div class="audit-background head-row">
              {{ item.taskName }}
            </div>
            <div class="foot-row">{{ item.approverName }}</div>
            <a class="del-node">×</a>
          </div>
          <div class="add-btn-box">
            <button type="button" class="add-bar">+</button>
          </div>
        </div>
        <work-tree v-if="item.children" :list="item.children"></work-tree>
      </div>
    </div>
    <div v-if="list.length > 1" class="flow-child-box">
      <div class="branch">
        <div class="branch-box">
          <div v-for="(item, index) in list" :key="index" class="col-box">
            <div v-if="index == 0" class="top-left-cover-line"></div>
            <div
              v-if="index == list.length - 1"
              class="top-right-cover-line"
            ></div>
            <div class="branch-one">
              <div class="condition-node-box">
                <div class="line"></div>
                <div class="deal-node-box">
                  <div class="audit-background head-row">
                    {{ item.taskName }}
                  </div>
                  <div class="foot-row">{{ item.approverName }}</div>
                  <a class="del-node">×</a>
                </div>
                <div class="add-btn-box">
                  <button type="button" class="add-bar">+</button>
                </div>
              </div>
            </div>
            <work-tree v-if="item.children" :list="item.children"></work-tree>
            <div v-if="index == 0" class="bottom-left-cover-line"></div>
            <div
              v-if="index == list.length - 1"
              class="bottom-right-cover-line"
            ></div>
          </div>
        </div>
        <div class="line-in-middle">
          <div class="line"></div>
          <div class="add-btn-box">
            <button type="button" class="add-bar">+</button>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  name: "workTree",
  props: {
    list: [Array, Object],
  },
};
</script>

在vue中的使用：

<div class="wrapper">
  <div class="flow-parent-box">
    <div class="deal-node-box">
      <div class="fill-background head-row">发起人</div>
      <div class="foot-row">默认发起人</div>
    </div>
    <div class="line-in-middle">
      <div class="line"></div>
      <div class="add-btn-box">
        <button type="button" class="add-bar">+</button>
      </div>
    </div>
  </div>
  <div
    class="flow-parent-box"
    v-for="(item, index) in flowArr"
    :key="index"
  >
    <div class="flow-parent-box">
      <div class="deal-node-box">
        <div class="audit-background head-row">{{ item.taskName }}</div>
        <div class="foot-row">{{ item.approverName }}</div>
        <a class="del-node">×</a>
      </div>
      <div class="line-in-middle">
        <div class="line"></div>
        <div class="add-btn-box">
          <button type="button" class="add-bar">+</button>
        </div>
      </div>
    </div>
    <work-tree v-if="item.children" :list="item.children"></work-tree>
  </div>
  <div class="end-node">结束</div>
</div>

看一下最终效果吧：