onChange: (selectedRowKeys, selectedRows) => {
  console.log(`selectedRowKeys: ${selectedRowKeys}`, 'selectedRows: ', selectedRows);
 },

  rowSelection() {
   const { selectedRowKeys } = this;
   return {
    onChange: (selectedRowKeys, selectedRows) => {
     console.log(`selectedRowKeys: ${selectedRowKeys}`, 'selectedRows: ', selectedRows);
    },
    getCheckboxProps: record => ({
     props: {
      disabled: record.name === 'Disabled User', // Column configuration not to be checked
      name: record.name,
     }
    }),
   }
  }

data () {
  return {
   // ... 
   record: '',
   rowSelection: {
    selectedRowKeys: [],
    onChange: this.onSelectChange
   }
 },
 methods: {
   handleEdit (record) {
   //...省略我的业务逻辑
    if (record) {
    //...省略我的业务逻辑
    let selectedRowKeys =
     (record.roleIdList.length > 0 && record.roleIdList.split(',')) || [];
    this.rowSelection = {
     selectedRowKeys: selectedRowKeys,
     onChange: this.onSelectChange,
     getCheckboxProps: record => {
      return {
       props: {
        defaultChecked: selectedRowKeys.includes(record.id)
       }
      };
     }
    };
   } else {
    this.record = '';
    this.rowSelection = {
     selectedRowKeys: [],
     onChange: this.onSelectChange
    }
   }

 },
 onSelectChange (selectedRowKeys) {
   // 去重 Array.from(new Set(arr))
   this.rowSelection.selectedRowKeys = Array.from(new Set(selectedRowKeys));
 }
 }