Hutool工具类excel导出详细教程

Hutool工具类excel导出

1-导入依赖

       <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>5.1.0</version>
        </dependency>

2-excel导出数据实体类

/**
 * @ClassName: ExcelData
 * @Description:
 * @Author: 
 * @Date: 
 **/
@Data
public class ExcelData {


    @ApiModelProperty("姓名")
    private String personName;

    @ApiModelProperty("性别")
    private String gender;


    @ApiModelProperty("年龄")
    private String age;


    @ApiModelProperty("身份证号")
    private String certificateNumber;



    @ApiModelProperty("身高")
    private Integer height;

    @ApiModelProperty("体重")
    private Double weight;

   



    public void setGender(String gender) {
        if(gender.equals("0")){
            this.gender="男";
        }else {
            this.gender="女";
        }
    }
}

@ApiModelProperty注解对应标题名称
3-创建Excel工具类

@Slf4j
public class ExportExcelUtil {

    public static void export(List<ExcelData> data, String path, String fileName, ExcelData excelData) throws IOException {
        log.info("开始导出");
        ExcelWriter writer = ExcelUtil.getWriter();
        List<Map> fieldAnnotation = getFieldAnnotation(excelData);
        for(Map<String,String> map:fieldAnnotation){
            for(String key:map.keySet()){
                String value = map.get(key);
                writer.addHeaderAlias(key,value);
            }
        }

        //第1列40px宽
        //writer.setColumnWidth(0, 40);
        //第2列15px 宽
        //writer.setColumnWidth(1, 15);



        //对齐方式,水平左对齐,垂直中间对齐
        writer.getStyleSet().setAlign(HorizontalAlignment.LEFT, VerticalAlignment.CENTER);

        //标题样式
        CellStyle headCellStyle = writer.getHeadCellStyle();
        //设置背景色
        headCellStyle.setFillForegroundColor(IndexedColors.WHITE1.getIndex());
        //必须设置 否则背景色不生效
        headCellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);

        //创建标题字体
        Font headFont = writer.createFont();
        headFont.setFontName("宋体");
        //大小
        headFont.setFontHeightInPoints((short) 11);
        //加粗
        headFont.setBold(true);
        headCellStyle.setFont(headFont);

        writer.setColumnWidth(-1, 30);
        writer.setRowHeight(-1,20);


        //保存路径
        FileOutputStream output = new FileOutputStream(path+fileName+".xls");
        // 一次性写出内容
        writer.write(data);

        //自适应列宽
        int columnCount = writer.getColumnCount();
        for (int i = 0; i < columnCount; ++i) {
            double width = SheetUtil.getColumnWidth(writer.getSheet(), i, false);
            if (width != -1.0D) {
                width *= 256.0D;
                //此处可以适当调整，调整列空白处宽度
                width += 220D;
                writer.setColumnWidth(i, Math.toIntExact(Math.round(width / 256D)));
            }
        }

        writer.flush(output,true);
        // 关闭writer，释放内存
        writer.close();
    }


    public static List<Map> getFieldAnnotation(Object object) {
        Field[] fields = object.getClass().getDeclaredFields();
        Map<String, String> resultMap = new HashMap();
        List<Map> list=new ArrayList<>();
        for (Field field : fields) {
            // 是否引用ApiModelProperty注解
            boolean bool = field.isAnnotationPresent(ApiModelProperty.class);
            if (bool) {
                resultMap = new HashMap();
                String value = field.getAnnotation(ApiModelProperty.class).value();
                resultMap.put(field.getName(), value);
                list.add(resultMap);
            }
        }
        return list;
    }

}

4-测试

public static void main(String[] args) {

        Date date=new Date();
        SimpleDateFormat format=new SimpleDateFormat("yyyyMMddHHmmss");
        String fileName = "测试"+format.format(date);
        try{
            //路径前端传入
            String path="D:\\文档\\导出\\";
            ExcelData excel=new ExcelData();
            excel.setPersonName("111");
            excel.setGender("女");
            excel.setHeight(178);
            excel.setWeight(158.52);
            excel.setCertificateNumber("320814145718185169");
            //数据库获取
            List<ExcelData> data=new ArrayList<>();
            data.add(excel);
            excel.setPersonName("222");
            excel.setGender("男");
            data.add(excel);
            ExcelData test=new ExcelData();
            ExportExcelUtil.export(data, path,fileName,test);
            System.out.println("数据导出成功!");
        }catch (Exception e){
            e.printStackTrace();
            System.out.println("数据导出失败!");
        }
    }

5-部署
lunix中部署注意事项
查看安装字体
fc-list :lang=zh
没有则安装相对应字体
docker部署注意事项
1-在windows的字体文件复制到lunix中
电脑字体默认在“C:\Windows\Fonts”文件夹下。
2-修改DockerFile配置文件

我个人就是将字体文件放在font文件夹中,跟DockerFile文件同一路径