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package cn.kk.spring_simple_operation;
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.util.ListUtils;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import java.util.Date;
import java.util.List;
/**
* @author kk
* @date 2025/1/2
*/
@SpringBootTest
public class ExcelTest {
@Test
public void noModelWrite() {
// 写法1
String fileName = "D:\\" + "noModelWrite" + System.currentTimeMillis() + ".xlsx";
// 这里 需要指定写用哪个class去写，然后写到第一个sheet，名字为模板 然后文件流会自动关闭
EasyExcel.write(fileName).head(head()).sheet("模板").doWrite(dataList());
}
private List<List<String>> head() {
List<List<String>> list = ListUtils.newArrayList();
List<String> head0 = ListUtils.newArrayList();
head0.add("字符串" + System.currentTimeMillis());
List<String> head1 = ListUtils.newArrayList();
head1.add("数字" + System.currentTimeMillis());
List<String> head2 = ListUtils.newArrayList();
head2.add("日期" + System.currentTimeMillis());
list.add(head0);
list.add(head1);
list.add(head2);
return list;
}
private List<List<Object>> dataList() {
List<List<Object>> list = ListUtils.newArrayList();
for (int i = 0; i < 10; i++) {
List<Object> data = ListUtils.newArrayList();
data.add("字符串" + i);
data.add(0.56);
data.add(new Date());
list.add(data);
}
return list;
}
}