原理解析:每滚动一次相当于翻页,请求后端时给的页码参数要想办法加1,后端才能根据页码给出相应数据

注意后端收到页码参数之后要准确计算出每页的首行数据,关键逻辑代码:
# 根据前端传的页码,进行计算下一页的起始行号
page = (int(params['page'])-1)*10+1
sql = f"SELECT * FROM dong_c_di_comment limit 10 offset {page}"
print(sql)
前端实现部分:
const [loading, setLoading] = useState(false);
const [data, setData] = useState([]);
// 定义传给后端的页码钩子
const [page, setPage] = useState(1);
const loadMoreData = async () => {
if (loading) {
return;
}
setLoading(true);
const params = {page:page}
get_cars(params)
.then(res => {
setData([...data, ...res.data]);
setPage(page + 1);
setLoading(false);
})
.catch(() => {
setLoading(false);
});
};
useEffect(() => {
loadMoreData();
}, []);
return(
<div
id="scrollableDiv"
style={{
width:"350px",
height: "900px",
overflow: 'auto',
padding: '0 16px',
border: '1px solid rgba(140, 140, 140, 0.35)',
}}
>
<InfiniteScroll
dataLength={data.length}
next={loadMoreData}
hasMore={data.length < 50}
loader={<Skeleton avatar paragraph={{ rows: 1 }} active />}
endMessage={<Divider plain>加载完毕, 没有更多数据了哦 🤐</Divider>}
scrollableTarget="scrollableDiv"
>
<List
dataSource={data}
renderItem={(item) => {
// console.log("item1111111",item)
return (
<List.Item key={item.commenter_name}>
<List.Item.Meta
avatar={<Avatar src={item.avatar_url} />}
title={<a href="https://ant.design">{item.title}</a>}
description={item.content}
/>
</List.Item>
)
}
}
/>
</InfiniteScroll>
</div>
)



















