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Java實(shí)現(xiàn)多級(jí)表頭和復(fù)雜表頭的導(dǎo)出功能

更新時(shí)間：2024年03月15日 16:00:55 作者：IT行業(yè)小趴菜

這篇文章主要為大家詳細(xì)介紹了Java實(shí)現(xiàn)多級(jí)表頭和復(fù)雜表頭的導(dǎo)出功能的相關(guān)知識(shí),文中的示例代碼講解詳細(xì),感興趣的小伙伴可以跟隨小編一起學(xué)習(xí)一下

前言

大概內(nèi)容：

多級(jí)表頭，復(fù)雜表頭的導(dǎo)出功能都可以仿照這個(gè)例子去編寫

提示：以下是本篇文章正文內(nèi)容，下面案例可供參考

一、實(shí)現(xiàn)的效果

二、調(diào)用工具類

業(yè)務(wù)層調(diào)用

    //假設(shè)這是需要導(dǎo)出的數(shù)據(jù)
   List<MonitorFoldLineTable> data = new ArrayList();
   //調(diào)用導(dǎo)出工具類
   FileExportUtil.testExcelDemo(data,response);

對(duì)應(yīng)的實(shí)體類

public class MonitorFoldLineTable {
    private String cdbh;
    private String sd;
    private Double dcsg;
    private Double dcdsf;
    private Double dcc;
    private Double ljsg;
    private Double ljdsf;
    private Double ljc;;
    private Double bxsg;
    private Double bxdsf;
    private Double bxc;
    private String time;
}

三、詳細(xì)工具類

直接copy改吧改吧就可以使用，有詳細(xì)注釋

import com.iS3.manager.monitoring.domain.vo.MonitorFoldLineTable;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xssf.usermodel.*;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.List;

/**
 * Created with IntelliJ IDEA.
 *
 * @Author: yangyongzhuo
 * @Date: 2021/07/21/8:58
 * @Description:
 */
public class FileExportUtil {

    /**
     * @param list 需要寫入excel的數(shù)據(jù) 從數(shù)據(jù)庫或者其他途徑讀取
     * @Description: 導(dǎo)出監(jiān)測對(duì)比數(shù)據(jù)的工具類
     * @return:
     * @Author: yangyongzhuo
     * @Date: 2021/7/25 9:29
     */
    public static void testExcelDemo(List<MonitorFoldLineTable> list, HttpServletResponse response) {
        /** 第一步，創(chuàng)建一個(gè)Workbook，對(duì)應(yīng)一個(gè)Excel文件  */
        XSSFWorkbook wb = new XSSFWorkbook();
        /** 第二步，在Workbook中添加一個(gè)sheet,對(duì)應(yīng)Excel文件中的sheet  */
        XSSFSheet sheet = wb.createSheet("excel導(dǎo)出標(biāo)題");
        /** 第三步，設(shè)置樣式以及字體樣式*/
        XSSFCellStyle titleStyle = createTitleCellStyle(wb);
        XSSFCellStyle headerStyle = createHeadCellStyle(wb);
        XSSFCellStyle contentStyle = createContentCellStyle(wb);
        /** 第四步，創(chuàng)建標(biāo)題 ,合并標(biāo)題單元格 */
        // 行號(hào)
        int rowNum = 0;
        // 創(chuàng)建第一頁的第一行，索引從0開始
        XSSFRow row0 = sheet.createRow(rowNum++);
        row0.setHeight((short) 600);// 設(shè)置行高

            String[] row_Text = {"測點(diǎn)編號(hào)", "單次變化量", "", "", "累計(jì)變化量", "", "", "變形速率", "", "", "監(jiān)測時(shí)間"};
            for (int i = 0; i < row_Text.length; i++) {
                XSSFCell c00 = row0.createCell(i);
                c00.setCellValue(row_Text[i]);
                c00.setCellStyle(headerStyle);
            }
            // 合并單元格，參數(shù)依次為起始列，結(jié)束列，起始行，結(jié)束行 （索引0開始）
            sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, 0));//標(biāo)題合并單元格操作，4為總列數(shù)
            sheet.addMergedRegion(new CellRangeAddress(0, 0, 1, 3));//標(biāo)題合并單元格操作，4為總列數(shù)
            sheet.addMergedRegion(new CellRangeAddress(0, 0, 4, 6));//標(biāo)題合并單元格操作，4為總列數(shù)
            sheet.addMergedRegion(new CellRangeAddress(0, 0, 7, 9));//標(biāo)題合并單元格操作，4為總列數(shù)
            sheet.addMergedRegion(new CellRangeAddress(0, 1, 10, 10));//標(biāo)題合并單元格操作，4為總列數(shù)
            //第二行
            XSSFRow row2 = sheet.createRow(rowNum++);
            row2.setHeight((short) 700);
            String[] row_third = {"", "施工監(jiān)測", "第三方監(jiān)測", "前后差值", "施工監(jiān)測", "第三方監(jiān)測", "前后差值", "施工監(jiān)測", "第三方監(jiān)測", "前后差值"};
            for (int i = 0; i < row_third.length; i++) {
                XSSFCell tempCell = row2.createCell(i);
                tempCell.setCellValue(row_third[i]);
                tempCell.setCellStyle(headerStyle);
            }


        for (MonitorFoldLineTable value : list) {
  
            XSSFRow tempRow = sheet.createRow(rowNum++);
            tempRow.setHeight((short) 500);
            // 循環(huán)單元格填入數(shù)據(jù)
            for (int j = 0; j < 12; j++) {
                //列寬自適應(yīng)，j為自適應(yīng)的列，true就是自適應(yīng)，false就是不自適應(yīng)，默認(rèn)不自適應(yīng)
                sheet.autoSizeColumn(j, true);
                XSSFCell tempCell = tempRow.createCell(j);
                tempCell.setCellStyle(contentStyle);
                String tempValue = "";
                    switch (j) {
                        case 0:
                            tempValue = value.getCdbh();
                            break;
                        case 1:
                            tempValue = value.getSd();
                            break;
                        case 2:
                            tempValue = value.getDcsg().toString();
                            break;
                        case 3:
                            tempValue = value.getDcdsf().toString();
                            break;
                        case 4:
                            tempValue = value.getDcc().toString();
                            break;
                        case 5:
                            tempValue = value.getLjsg().toString();
                            break;
                        case 6:
                            tempValue = value.getLjdsf().toString();
                            break;
                        case 7:
                            tempValue = value.getLjc().toString();
                            break;
                        case 8:
                            tempValue = value.getBxsg().toString();
                            break;
                        case 9:
                            tempValue = value.getBxdsf().toString();
                            break;
                        case 10:
                            tempValue = value.getBxc().toString();
                            break;
                        case 11:
                            tempValue = value.getTime();
                            break;
                    }
                    tempCell.setCellValue(tempValue);
            }
        }
        //導(dǎo)出到瀏覽器下載
        buildExcelDocument("監(jiān)測數(shù)據(jù)", wb, response);
    }

    /**
     * @Description: [導(dǎo)出到瀏覽器]
     * @Param: [fileName, wb, response]
     * @return: void
     * @Author: yangyongzhuo
     * @Date: 2021/7/25 9:40
     */
    private static void buildExcelDocument(String fileName, Workbook wb, HttpServletResponse response) {
        try {
            response.setContentType("application/octet-stream");
            // 可自行定義編碼格式
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "utf-8"));
            //清除jsp編譯html文件的空白,防止excel出現(xiàn)空行
            response.flushBuffer();
            //寫出
            wb.write(response.getOutputStream());
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            IOUtils.closeQuietly(wb);
        }
    }
//---------------------------------------以下是封裝的樣式-----------------------------

    /**
     * 創(chuàng)建標(biāo)題樣式
     *
     * @param wb
     * @return
     */
    private static XSSFCellStyle createTitleCellStyle(XSSFWorkbook wb) {
        XSSFCellStyle cellStyle = wb.createCellStyle();
        cellStyle.setAlignment(HorizontalAlignment.CENTER);//水平居中
        cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);//垂直對(duì)齊
        cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
//        cellStyle.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());//背景顏色

        XSSFFont headerFont1 = (XSSFFont) wb.createFont(); // 創(chuàng)建字體樣式
        headerFont1.setBold(true); //字體加粗
        headerFont1.setFontName("黑體"); // 設(shè)置字體類型
        headerFont1.setFontHeightInPoints((short) 15); // 設(shè)置字體大小
        cellStyle.setFont(headerFont1); // 為標(biāo)題樣式設(shè)置字體樣式
        return cellStyle;
    }

    /**
     * 創(chuàng)建表頭樣式
     *
     * @param wb
     * @return
     */
    private static XSSFCellStyle createHeadCellStyle(XSSFWorkbook wb) {
        XSSFCellStyle cellStyle = wb.createCellStyle();
        cellStyle.setWrapText(true);// 設(shè)置自動(dòng)換行
        cellStyle.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());//背景顏色
        cellStyle.setAlignment(HorizontalAlignment.CENTER); //水平居中
        cellStyle.setVerticalAlignment(VerticalAlignment.CENTER); //垂直對(duì)齊
        cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
//        cellStyle.setBottomBorderColor(IndexedColors.BLACK.index);
        cellStyle.setBorderBottom(BorderStyle.THIN); //下邊框
        cellStyle.setBorderLeft(BorderStyle.THIN); //左邊框
        cellStyle.setBorderRight(BorderStyle.THIN); //右邊框
        cellStyle.setBorderTop(BorderStyle.THIN); //上邊框

        XSSFFont headerFont = (XSSFFont) wb.createFont(); // 創(chuàng)建字體樣式
        headerFont.setBold(true); //字體加粗
        headerFont.setFontName("黑體"); // 設(shè)置字體類型
        headerFont.setFontHeightInPoints((short) 12); // 設(shè)置字體大小
        cellStyle.setFont(headerFont); // 為標(biāo)題樣式設(shè)置字體樣式

        return cellStyle;
    }

    /**
     * 創(chuàng)建內(nèi)容樣式
     *
     * @param wb
     * @return
     */
    private static XSSFCellStyle createContentCellStyle(XSSFWorkbook wb) {
        XSSFCellStyle cellStyle = wb.createCellStyle();
        cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);// 垂直居中
        cellStyle.setAlignment(HorizontalAlignment.CENTER);// 水平居中
        cellStyle.setWrapText(true);// 設(shè)置自動(dòng)換行
        cellStyle.setBorderBottom(BorderStyle.THIN); //下邊框
        cellStyle.setBorderLeft(BorderStyle.THIN); //左邊框
        cellStyle.setBorderRight(BorderStyle.THIN); //右邊框
        cellStyle.setBorderTop(BorderStyle.THIN); //上邊框

        // 生成12號(hào)字體
        XSSFFont font = wb.createFont();
        font.setColor((short) 8);
        font.setFontHeightInPoints((short) 12);
        cellStyle.setFont(font);

        return cellStyle;
    }
}

以上就是Java實(shí)現(xiàn)多級(jí)表頭和復(fù)雜表頭的導(dǎo)出功能的詳細(xì)內(nèi)容，更多關(guān)于Java表頭導(dǎo)出的資料請(qǐng)關(guān)注腳本之家其它相關(guān)文章！

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