场景

流程图中涉及到弯曲的箭头，使用普通的css是画不出来的，至少我是没想到办法。
效果图

代码

option = {
  xAxis: {
    show: false,
    type: 'value'
  },
  yAxis: {
    show: false,
    type: 'value'
  },
  tooltip: {
    formatter: '{b}'
  },
  series: [
    {
      type: 'graph',
      layout: 'none',
      edgeSymbol: ['circle', 'arrow'],
      edgeSymbolSize: [0, 20],
      edgeLabel: {
        normal: {
          show: true,
          position: 'middle',
          textStyle: {
            fontSize: 14
          },
          // label上的文字
          formatter: '{c}'
        }
      },
      zoom: 0.9,
      focusNodeAdjacency: true, // 指定的节点以及其所有邻接节点高亮
      roam: false, // 是否可拖拽

    
      lineStyle: {
        normal: {
          width: 2,
          shadowColor: 'none',
          color: '#142F54',
          curveness: 0.1
        },
      },
      symbolSize: [100, 70],
      // 设置标记点图形
      symbol: 'roundRect',
      label: {
        show: true,
        // 展示的label值
        formatter: function (params) {
          let c = params.data.username || '';
          let b = params.data.name;
          var str = '';
          if (c === '') {
            str = '{p|' + b + '}';
          } else {
            str = '{n|' + c + '}\n{p|' + b + '}';
          }
          return str;
        },
        rich: {
          p: {
            fontSize: 14,
            color: '#142F54',
            align: 'center'
          },
          n: {
            height: 25,
            fontSize: 16,
            color: '#142F54',
            align: 'center'
          }
        }
      },
      itemStyle: {
        normal: {
          color: '#F2F2F2',
          borderColor: '#707070',
          borderWidth: 2,
          shadowColor: 'rgba(225,225,225,0.4)',
          shadowBlur: 10,
          shadowOffsetX: 10,
          shadowOffsetY: 10
        }
      },
      data: [
        {
          import: true,
          level: 'first',
          username: 'A',
          name: '111',
          itemStyle: {
            normal: {
              color: '#EE6F0B'
            }
          },
          x: 0,
          y: 100
        },
        {
          import: false,
          level: 'sconed',
          username: 'B',
          name: '222',
          x: 100,
          y: 50
        },
        {
          import: false,
          level: 'sconed',
          username: "C",
          name: '333',
          x: 200,
          y: 50
        },
        {
          import: false,
          level: 'third',
          username: "D",
          name: '444',
          x: 300,
          y: 100
        },
        {
          import: true,
          level: 'third',
          username: 'E',
          name: '555',
          itemStyle: {
            normal: {
              color: '#EE6F0B'
            }
          },
          x: 100,
          y: 100
        },
        {
          import: false,
          level: 'third',
          username: "F",
          name: '666',
          x: 200,
          y: 100
        },
         {
          import: false,
          level: 'third',
          username: "G",
          name: '777',
          x: 100,
          y:250
        },
      ],

      links: [
        {
          source: '111',
          value: '哈哈哈 ',
          target: '222'
        },
        {
          source: '222',
          value: '嘻嘻嘻 ',
          target: '333'
        },
        {
          source: '333',
          value: '鹅鹅鹅',
          target: '444'
        },
        {
          source: '111',
          value: '5165 ',
          target: '555'
        },
        {
          source: '555',
          value: '5165 ',
          target: '666'
        },
        {
          source: '666',
          value: '5165 ',
          target: '555'
        },
        {
          source: '666',
          value: '5165 ',
          target: '444'
        },
        {
          source: '111',
          value: '5165 ',
          target: '777'
        },
        {
          source: '777',
          value: '5165 ',
          target: '444'
        }
      ]
    }
  ]
};