Hutool工具类ExcelUtil --- 简单表格的创建、数据导入、字体、样式

1.所需依赖

注意：hutool、poi版本不匹配会导致异常

 <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
     <version>2.3.12.RELEASE</version>
     <relativePath/> <!-- lookup parent from repository -->
 </parent>

<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.8.4</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>5.2.2</version>
</dependency>

2.Excel文件创建、内容导入

@Data
public class User {

    private String id;

    private String name;

    private Integer age;

    private Date birthday;

    public User() {
    }

    public User(String id, String name, Integer age, Date birthday) {
        this.id = id;
        this.name = name;
        this.age = age;
        this.birthday = birthday;
    }

    
}

 #控制列顺序，需要使用LinkedHashMap,不能使用HashMap
 Map<String, String> headers = new LinkedHashMap<>();
 headers.put("id","编号");
 headers.put("name","姓名");
 headers.put("age","年龄");
 headers.put("birthday","出生日期");

 ExcelWriter writer = ExcelUtil.getWriter("d:/excelTest.xls");
 #设置表格头部别名
 writer.setHeaderAlias(headers);
 writer.setOnlyAlias(true);
 List<User> userList = new ArrayList<>();
 userList.add(new User("1","小明",20,new Date()));
 userList.add(new User("2","小华",20,new Date()));
 writer.write(userList,true);

 #必须使用close或flush文件才能被创建、数据才能被导入
 writer.close();

3.表格样式设置

Workbook workbook = writer.getWorkbook();
#设置全局样式
StyleSet styleSet = new StyleSet(workbook);

#设置字体样式
Font font = workbook.createFont();
#是否加粗
font.setBold(true);
#颜色
font.setColor(Font.COLOR_RED);
#字体
font.setFontName("微软雅黑");
#斜体
font.setItalic(true);
styleSet.setFont(font,true);

#设置全局行样式
CellStyle cellStyle = styleSet.getCellStyle();
cellStyle.setVerticalAlignment(VerticalAlignment.BOTTOM);
cellStyle.setAlignment(HorizontalAlignment.LEFT);
writer.setStyleSet(styleSet);


#头部样式
CellStyle headCellStyle = styleSet.getHeadCellStyle();
cellStyle.setVerticalAlignment(VerticalAlignment.BOTTOM);
cellStyle.setAlignment(HorizontalAlignment.LEFT);
headCellStyle.setFont(font);