1. 引入依赖
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>easyexcel</artifactId>
<version>2.2.6</version>
</dependency>
2.创建存储数据的实体类
@Data
public class Detail {
//姓名
private String name;
//省
private String address;
//市
private String phone;
//备注
private String remark;
}
3.自定义excel的列宽和行高
public class CustomizeColumnWidth extends AbstractColumnWidthStyleStrategy {
//自定义列宽
@Override
protected void setColumnWidth(WriteSheetHolder writeSheetHolder, List<CellData> list, Cell cell, Head head, Integer integer, Boolean isHead) {
// 测试为 COLUMN 宽度定制.
if (isHead && cell.getRowIndex() == 2) {
int columnWidth = cell.getStringCellValue().getBytes().length;
int cellIndex = cell.getColumnIndex();
switch (cellIndex) {
case 0:
case 2:
case 3:
columnWidth = 10;
break;
case 1:
columnWidth = 12;
break;
case 4:
columnWidth = 15;
break;
case 5:
columnWidth = 50;
break;
default:
break;
}
if (columnWidth > 255) {
columnWidth = 255;
}
writeSheetHolder.getSheet().setColumnWidth(cellIndex, columnWidth * 256);
}
}
//自定义行高
@Override
public void beforeCellCreate(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, Row row, Head head, Integer columnIndex, Integer relativeRowIndex, Boolean isHead) {
// 设置行高测试
int rowIndex = row.getRowNum();
System.out.println("当前行: " + rowIndex);
short height = 600;
row.setHeight(height);
}
}
4.生成excel的表头以及生成excel
在controller类中加入以下几个方法
public void exportData(HttpServletResponse response) throws IOException {
List<Demo> list = new ArrayList<>();
for (int i = 0; i < 10; i++) {
Demo demo = new Demo();
demo.setName("姓名" + i);
demo.setProvince("省" + i);
demo.setCity("市" + i);
demo.setPhone("电话" + i);
list.add(demo);
}
//设置返回数据的类型
response.setContentType("application/msexcel");
//设置返回数据的字符集编码
response.setCharacterEncoding("utf-8");
// 这里URLEncoder.encode可以防止中文乱码 当然和easyexcel没有关系
String fileName = URLEncoder.encode("ParamsConfig", "UTF-8").replaceAll("\\+", "%20");
response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");
EasyExcel.write(response.getOutputStream(), Demo.class)
.head(getHeader())
.registerWriteHandler(new CustomizeColumnWidth())
.registerWriteHandler(getStyleStrategy())
.sheet("sheet名称")
.doWrite(list);
}
//获取自定义表头:1.表头总共占用几行,就要在定义的每个list中添加几条数据 2.表头总共有几列就
//要定义几个list
private List<List<String>> getHeader() {
String first = "报表";
List<List<String>> list = new ArrayList<List<String>>();
List<String> head0 = new ArrayList<String>();
//注意这里是表头的合并上下两行
head0.add(first);
head0.add("姓名");
head0.add("姓名");
//注意这里是合并表头的左右两行
List<String> head1 = new ArrayList<String>();
head1.add(first);
head1.add("地址");
head1.add("省");
List<String> head2 = new ArrayList<String>();
head2.add(first);
head2.add("地址");
head2.add("市");
//注意这里是表头的合并上下两行
List<String> head3 = new ArrayList<String>();
head3.add(first);
head3.add("电话");
head3.add("电话");
list.add(head0);
list.add(head1);
list.add(head2);
list.add(head3);
return list;
}
5.测试导出结果
如果只导出正常表头的excel,请点击此处链接https://blog.csdn.net/qq_41774102/article/details/128252059
说明:本文章内容为笔者亲测有效,若有不当之处,希望各位大佬不吝赐告,笔者定当虚心接收并改正。