java使用easyexcel模板导出excel
时间: 2023-05-24 16:03:34 浏览: 316
文件时,如何设置单元格样式?
A:使用easyexcel模板导出Excel文件时,可以通过设置注解@ExcelProperty的style属性来指定对应单元格的样式。具体操作如下:
1. 定义样式类,继承自com.alibaba.excel.write.style.AbstractCellStyleStrategy,重写setCellStyle方法,对单元格样式进行设置。示例代码如下:
```
public class CustomCellStyleStrategy extends AbstractCellStyleStrategy {
private CellStyle cellStyle;
public CustomCellStyleStrategy(Workbook workbook) {
this.cellStyle = workbook.createCellStyle();
Font font = workbook.createFont();
font.setFontName("微软雅黑");
font.setFontHeightInPoints((short) 12);
cellStyle.setFont(font);
cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);
cellStyle.setAlignment(HorizontalAlignment.CENTER);
cellStyle.setBorderTop(BorderStyle.THIN);
cellStyle.setBorderRight(BorderStyle.THIN);
cellStyle.setBorderBottom(BorderStyle.THIN);
cellStyle.setBorderLeft(BorderStyle.THIN);
}
@Override
protected CellStyle setCellStyle(Cell cell, Head head, Integer integer, Integer integer1) {
return cellStyle;
}
}
```
2. 在需要导出的实体类中,为需要定制样式的属性添加@ExcelProperty注解,设置style属性为对应的样式类。示例代码如下:
```
public class User {
@ExcelProperty(value = "姓名", index = 0, style = CustomCellStyleStrategy.class)
private String name;
@ExcelProperty(value = "年龄", index = 1)
private Integer age;
// ...
}
```
在注解中,value属性指定了单元格的标题,index属性指定了导出的顺序,style属性指定了样式类。
通过以上步骤,即可设置单元格样式。需要注意的是,样式类需要在导出Excel时传入,如下示例代码:
```
List<User> userList = new ArrayList<>();
// ... 添加用户数据
// 构造导出参数对象
WriteWorkbook writeWorkbook = EasyExcel.write(fileName).build();
WriteSheet writeSheet = EasyExcel.writerSheet("Sheet1").head(User.class).registerWriteHandler(new CustomCellStyleStrategy(writeWorkbook.getWorkbook())).build();
// 执行导出
EasyExcel.write(fileName, User.class).sheet("Sheet1").build().write(userList);
```
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