Java Excel复杂表头，表头合并单元格

效果预览

一、maven依赖

 <!--操作excel --><dependency><groupId>com.alibaba</groupId><artifactId>easyexcel</artifactId><version>2.1.1</version><scope>test</scope></dependency><dependency><groupId>com.alibaba</groupId><artifactId>easyexcel</artifactId><version>2.1.1</version><scope>compile</scope></dependency>

二、Excel DTO

import com.alibaba.excel.annotation.ExcelIgnore;
import com.alibaba.excel.annotation.ExcelProperty;
import lombok.Data;import java.util.Date;//导出数据成excel  多级头导出  配合测试类
@Data
public class DemoData {@ExcelProperty({"序号"})private Integer orderNumber;@ExcelProperty({"一级","二三四级"})private String ceshi;@ExcelProperty({"一级","二级头", "三级头","四级"})private String string;@ExcelProperty({"一级","二级头", "三级头","四级"})private Date date;@ExcelProperty({"一级","二级头", "三级头","四级"})private Double doubleData;@ExcelIgnoreprivate String ignore;
}

三、测试类

import java.util.ArrayList;
import java.util.Date;
import java.util.List;import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.write.merge.LoopMergeStrategy;public class Test {public static void main(String[] args) {Test.mergeWrite();System.out.println("hao");}//多级输出excelpublic static void mergeWrite() {//创建数据List<DemoData> list = new ArrayList<DemoData>();for (int i = 0; i < 10; i++) {DemoData data = new DemoData();data.setOrderNumber(i);data.setCeshi("测试");data.setString("测试" + i);data.setDate(new Date());data.setDoubleData(0.820);list.add(data);}//文件名String fileName = System.currentTimeMillis()+".xlsx";// 每隔2行会合并 把eachColumn 设置成 3 也就是我们数据的长度，所以就第一列会合并。当然其他合并策略也可以自己写LoopMergeStrategy loopMergeStrategy = new LoopMergeStrategy(2, 1);// 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, DemoData.class).registerWriteHandler(loopMergeStrategy).sheet("合并单元格").doWrite(list);}
}