【Hutool】：使用hutool實現復雜excel導出功能

 

 轉自：https://blog.csdn.net/weixin_45511500/article/details/118884656

引入依賴

<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.7.2</version>
</dependency>

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>4.1.2</version>
</dependency>

<!-- lombok -->
 <dependency>
     <groupId>org.projectlombok</groupId>
     <artifactId>lombok</artifactId>
     <version>1.18.20</version>
     <scope>provided</scope>
 </dependency>

　　

編寫pojo類

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Student {

    /**
     * 學號
     */
    private String sno;

    /**
     * 姓名
     */
    private String name;

    /**
     * 年齡
     */
    private Integer age;

    /**
     * 性別
     */
    private String gender;

    /**
     * 籍貫
     */
    private String nativePlace;

    /**
     * 入學時間
     */
    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
    private Date enrollmentTime;

    private BigDecimal money;

}

　　

編寫實現類

	@PostMapping("user_export_excel")
    @ResponseBody
    public void exportExcel(HttpServletResponse response) throws UnsupportedEncodingException, ParseException {
         // 設置響應類型
        response.setContentType("application/vnd.ms-excel");
        // 設置字符編碼
        response.setCharacterEncoding("utf-8");
        // 設置響應頭信息
        response.setHeader("Content-disposition",
                "attachment;filename*=utf-8''" + URLEncoder.encode("學生花名冊", "UTF-8") + ".xlsx");


        List<Student> studentList = new ArrayList<Student>() {
            {
                SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
                add(new Student("1001", "張三", 23, "男", "陝西西安", dateFormat.parse("2020-09-01"), BigDecimal.valueOf(22.33)));
                add(new Student("1002", "李四", 22, "女", "陝西渭南", dateFormat.parse("2020-09-01"),BigDecimal.valueOf(11.99)));
            }
        };

        // 寫入文件
        ExcelWriter writer = ExcelUtil.getWriter();
        // 設置合並單元格
//        writer.merge(11, "BOM報價單", false);
//        writer.merge(3,"您上傳的BOM", false);
//        writer.merge(1, 1 ,4,9,"商城報價單", false);
        // 設置標題一樣式
        CellStyle cellStyle1 = writer.createCellStyle();
        cellStyle1.setVerticalAlignment(VerticalAlignment.CENTER);
        cellStyle1.setAlignment(HorizontalAlignment.CENTER);
        cellStyle1.setBorderLeft(writer.getCellStyle().getBorderLeft());
        cellStyle1.setBorderRight(writer.getCellStyle().getBorderRight());
        cellStyle1.setBorderBottom(writer.getCellStyle().getBorderBottom());
        Font font = writer.createFont();
        font.setBold(true);
        font.setFontHeightInPoints((short) 12);
        font.setFontName("微軟雅黑");
        cellStyle1.setFont(font);

        // 設置“總價” 單元格樣式
        CellStyle cellStyle = writer.createCellStyle();
        cellStyle.setFillForegroundColor(HSSFColor.HSSFColorPredefined.GOLD.getIndex());
        cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
        //設置垂直居中和水平居中
        cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);
        cellStyle.setAlignment(HorizontalAlignment.LEFT);
        //設置邊框
        cellStyle.setBorderRight(writer.getCellStyle().getBorderRight());
        cellStyle.setBorderBottom(writer.getCellStyle().getBorderBottom());


        // 標題一
        writer.merge(0,0,0,11, "BOM報價單", cellStyle1);
        // 標題二
        writer.merge(1,1,0,3,"您上傳的BOM", cellStyle1);
        writer.merge(1, 1 ,4,9,"商城報價單", cellStyle1);
        writer.merge(1,1,10,11,"總價（含稅）: "+ " 99.99",cellStyle);
        // 跳過前面兩行（為了設置標題樣式）原始的設置標題方法，不可以，例：merge(3, "標題名", false);
        writer.passRows(2);

        // 設置高度（行row）
        writer.setRowHeight(0, 50);
        writer.setRowHeight(1, 30);


        // 設置導出信息的表頭
        writer.addHeaderAlias("sno", "學號");
        writer.addHeaderAlias("name", "姓名");
        writer.addHeaderAlias("age", "年齡");
        writer.addHeaderAlias("gender", "性別");
        writer.addHeaderAlias("nativePlace", "籍貫");
        writer.addHeaderAlias("enrollmentTime", "入學時間");
        writer.addHeaderAlias("money", "金錢");

        // 設置列寬（Colum）
        writer.setColumnWidth(5, 20);
        writer.setColumnWidth(10, 10);
        writer.setColumnWidth(11, 10);

        // 設置導出表頭樣式，但不包括合並單元格
        CellStyle headCellStyle = writer.getHeadCellStyle();
        headCellStyle.setFillForegroundColor(HSSFColor.HSSFColorPredefined.LIME.getIndex());
        headCellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);

        // 寫入
        writer.write(studentList, true);

        // 主要針對自定義表頭設置 行高（必須要寫入完成后才可以設置）
        for (int i = 2; i < studentList.size(); i++) {
            writer.setRowHeight(i,20);
        }

        try {
            writer.flush(response.getOutputStream(), true);
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            writer.close();
        }
    }

　　

效果圖

 

 

 

參考資料

參考文章一
參考文章二
hutool官方文檔