antd获取table中checkbox选中的值

可以通过antd的`Table`组件中的`rowSelection`属性来实现多选和单选功能，并通过`selectedRowKeys`属性来获取当前选中的行的key值。

具体实现步骤如下:

1. 在`<Table>`组件中添加`rowSelection`属性，设置`type`为`checkbox`表示启用多选功能。

<Table
  rowSelection={{
    type: "checkbox",
    onChange: this.onSelectChange,
    selectedRowKeys: this.state.selectedRowKeys
  }}
  columns={columns}
  dataSource={data}
/>

2. 在`<Table>`组件中添加`onChange`事件处理函数`onSelectChange`。

onSelectChange = (selectedRowKeys, selectedRows) => {
  this.setState({ selectedRowKeys });
};

3. 在`render()`函数中获取当前选中行的key值。

const { selectedRowKeys } = this.state;

完整示例代码如下:

import React from "react";
import ReactDOM from "react-dom";
import { Table } from "antd";

const columns = [
  {
    title: "Name",
    dataIndex: "name"
  },
  {
    title: "Age",
    dataIndex: "age"
  },
  {
    title: "Address",
    dataIndex: "address"
  }
];

const data = [
  {
    key: "1",
    name: "John Brown",
    age: 32,
    address: "New York No. 1 Lake Park"
  },
  {
    key: "2",
    name: "Jim Green",
    age: 42,
    address: "London No. 1 Lake Park"
  },
  {
    key: "3",
    name: "Joe Black",
    age: 32,
    address: "Sidney No. 1 Lake Park"
  },
  {
    key: "4",
    name: "Jim Red",
    age: 32,
    address: "London No. 2 Lake Park"
  }
];

class App extends React.Component {
  state = {
    selectedRowKeys: []
  };

  onSelectChange = (selectedRowKeys, selectedRows) => {
    this.setState({ selectedRowKeys });
  };

  render() {
    const { selectedRowKeys } = this.state;
    const rowSelection = {
      type: "checkbox",
      onChange: this.onSelectChange,
      selectedRowKeys
    };
    return (
      <Table
        rowSelection={rowSelection}
        columns={columns}
        dataSource={data}
      />
    );
  }
}

ReactDOM.render(<App />, document.getElementById("container"));