const [current , setCurrent] = useState(1);
const [cacheSelectedId, setCacheSelectedId ] = useState([])
const [cacheSelected, setCacheSelected] = useState([])
cosnt [submitData, setSubmitData] = useState([])

// 将选择的数据组合成后端获取的数据
 function getSelectedData(){
   if(cacheSelected.length){
     cosnt result = cacheSelected.reduce((acu, cur)=>acu.concat(cur.data), [])
     setSubmitData(result)
   }
}

//表格分页改变函数
function handleChangePagination(pageNum, pageSize){
 setCurrent(pageNum);
if(cacheSelected.length && cacheSelected.some(itemA=>itemA.page === pageNum){
   const currentPageCacheKeys = cacheSelected.filter(itemB=> itemB.page === pageNum)[0]['data'];
  // 此刻的fd_id与rowSelection的rowKey需要一致
   const reuslt = currentPageCacheKeys .map(itemC =>itemC.fd_id);
   setCacheSelectedId(result)
}else{
   setCacheSelectedId([])
}

const rowSelection = {
  selectedRowKeys: cacheSelectedId,
  onChange: (selectedRowKeys,selectedRows) =>{
   setCacheSelectedId(selectedRowKeys)
   //将每页选中的数据存起来
    if(cacheSelected.length && cacheSelected.some(item=> item.page === current)){
      const result = cacheSelected.map(itemP=>{
        if(itemP.page === current){
            return {
               page: current,
               data: selectedRows
            }
        }else{
            return itemP
        }
      })
      setCacheSelected(result)
    }else{
      const reuslt = cacheSeleted;
      result.push({page: current, data: selectedRows});
      setCacheSelected(result)
    }
   
  }
}

<Table
   rowSelection={{
     type: 'checkbox',
    ...rowSelection
   }}
   rowKey={(row)=> row.fd_id}
/>
<Pagination
 current = { current }
 onChange = { handleChangePagination }
/>