获取列表<items>来自 Vaadin 8 Grid [英] Get List&lt;items&gt; from Vaadin 8 Grid

问题描述

问题:我有一个 Vaadin 8 Grid，但我找不到提取其中项目的方法.

Problem: I have a Vaadin 8 Grid , and I can't find a way to extract the items inside of it.

说明:从网格开始

Grid<Pojo> myGrid = new Grid<>();

我已经对其进行了配置，因此它可以通过延迟加载来获取数据.

I've configured it so it can take data with lazy loading.

    myGrid.setDataProvider(
            (sortOrd, offset, limit) -> dao.getAllFiltered(offset, limit, filter),
            () -> dao.getCountAllFiltered(filter)
    );

此时，我想从网格中提取所有项目(以便将其放入 excel)，例如 Listlist = myGrid.getItems();.我也试过通过 myGrid.getDataProvider() ，但没有有用的 getter.

At this point, I want to extraxt all the items from the grid (for putting that into an excel), something like List<Pojo> list = myGrid.getItems();. I've also tried passing through myGrid.getDataProvider() , but there are no useful getter into it.

我找不到任何吸气剂，我怎样才能做到这一点?谢谢

I can't find any getter, how can I achieve this? Thanks

推荐答案

你基本试过了吗?

List<Pojo> list = grid.getDataProvider()
                      .fetch(new Query<>())
                      .collect(Collectors.toList());

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