創建多樣化Excel表頭

package cn.wizzer.app.web.commons.utils;

import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.nutz.log.Log;
import org.nutz.log.Logs;

import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Ted {
    private Log log= Logs.get();

    /**
     *  導出excel （HSSFWorkbook）
     */
    public void exportExcel() {

        /** 第一步，創建一個Workbook，對應一個Excel文件  */
        HSSFWorkbook wb = new HSSFWorkbook();

        /** 第二步，在Workbook中添加一個sheet,對應Excel文件中的sheet  */
        HSSFSheet sheet = wb.createSheet("excel導出標題");

        /** 第三步，設置樣式以及字體樣式*/
        HSSFCellStyle titleStyle = createTitleCellStyle(wb);
        HSSFCellStyle headerStyle = createHeadCellStyle(wb);
        HSSFCellStyle contentStyle = createContentCellStyle(wb);

        /** 第四步，創建標題 ,合併標題單元格 */
        // 行號
        int rowNum = 0;
        // 創建第一頁的第一行，索引從0開始
        HSSFRow row0 = sheet.createRow(rowNum++);
        log.info("創建第一頁的第"+(rowNum++)+"行");
        row0.setHeight((short) 800);// 設置行高

        String title = "excel導出標題";
        HSSFCell c00 = row0.createCell(0);
        c00.setCellValue(title);
        c00.setCellStyle(titleStyle);
        // 合併單元格，參數依次爲起始行，結束行，起始列，結束列 （索引0開始）
        sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, 6));//標題合併單元格操作，6爲總列數

        // 第二行
        HSSFRow row1 = sheet.createRow(rowNum++);
        log.info("創建第一頁的第"+(rowNum++)+"行");
        row1.setHeight((short) 500);
        String[] row_first = {"填表單位：", "", "", "", "", " 2019年第2季度 ", ""};
        for (int i = 0; i < row_first.length; i++) {
            HSSFCell tempCell = row1.createCell(i);
            tempCell.setCellStyle(headerStyle);
            if (i == 0) {
                tempCell.setCellValue(row_first[i] + "測試單位");
            } else if (i == 5) {
                tempCell.setCellStyle(headerStyle);
                tempCell.setCellValue(row_first[i]);
            } else {
                tempCell.setCellValue(row_first[i]);
            }
        }

        // 合併
        sheet.addMergedRegion(new CellRangeAddress(1, 1, 0, 4));
        sheet.addMergedRegion(new CellRangeAddress(1, 1, 5, 6));

        //第三行
        HSSFRow row2 = sheet.createRow(rowNum++);
        row2.setHeight((short) 700);
        String[] row_second = {"名稱", "採集情況", "", "", "登記情況", "", "備註"};
        for (int i = 0; i < row_second.length; i++) {
            HSSFCell tempCell = row2.createCell(i);
            tempCell.setCellValue(row_second[i]);
            tempCell.setCellStyle(headerStyle);
        }


        // 合併
        sheet.addMergedRegion(new CellRangeAddress(2, 3, 0, 0));//名稱
        sheet.addMergedRegion(new CellRangeAddress(2, 2, 1, 3));//人數情況
        sheet.addMergedRegion(new CellRangeAddress(2, 2, 4, 5));//登記情況
        sheet.addMergedRegion(new CellRangeAddress(2, 3, 6, 6));//備註

        //第三行
        HSSFRow row3 = sheet.createRow(rowNum++);
        row3.setHeight((short) 700);
        String[] row_third = {"", "登記數(人)", "辦證總數(人)", "辦證率(%)", "登記戶數(戶)", "簽訂數(份)", ""};
        for (int i = 0; i < row_third.length; i++) {
            HSSFCell tempCell = row3.createCell(i);
            tempCell.setCellValue(row_third[i]);
            tempCell.setCellStyle(headerStyle);
        }

        //循環每一行數據
        List<Map<String, Object>> dataList = new ArrayList<Map<String, Object>>(); //查詢出來的數據
        Map<String,Object> map = new HashMap<String,Object>();
        map.put("name", "測試名稱1");
        map.put("r1", "111");
        map.put("r2", "222");
        map.put("r3", "333");
        map.put("r4", "444");
        map.put("r5", "555");
        map.put("r6", "666");
        dataList.add(map);
        dataList.add(map);//加多一條list

        for (Map<String, Object> excelData : dataList) {
            HSSFRow tempRow = sheet.createRow(rowNum++);
            tempRow.setHeight((short) 500);
            // 循環單元格填入數據
            for (int j = 0; j < 7; j++) {
                HSSFCell tempCell = tempRow.createCell(j);
                tempCell.setCellStyle(contentStyle);
                String tempValue;
                if (j == 0) {
                    // 鄉鎮、街道名稱
                    tempValue = excelData.get("name").toString();
                } else if (j == 1) {
                    // 登記數（人）
                    tempValue = excelData.get("r1").toString();
                } else if (j == 2) {
                    // 辦證總數（人）
                    tempValue = excelData.get("r2").toString();
                } else if (j == 3) {
                    // 辦證率（%）
                    tempValue = excelData.get("r3").toString();
                } else if (j == 4) {
                    // 登記戶數（戶）
                    tempValue = excelData.get("r4").toString();
                } else if (j == 5) {
                    // 簽訂數（份）
                    tempValue = excelData.get("r5").toString();
                } else {
                    // 備註
                    tempValue = excelData.get("r6").toString();
                }
                tempCell.setCellValue(tempValue);
            }
        }


        // 註釋行
        HSSFRow remark = sheet.createRow(rowNum++);
        remark.setHeight((short) 500);
        String[] row_remark = {"注：表中的“辦證率=辦證總數÷登記數×100%”", "", "", "", "", "", ""};
        for (int i = 0; i < row_remark.length; i++) {
            HSSFCell tempCell = remark.createCell(i);
            if (i == 0) {
                tempCell.setCellStyle(headerStyle);
            } else {
                tempCell.setCellStyle(contentStyle);
            }
            tempCell.setCellValue(row_remark[i]);
        }
        int remarkRowNum = dataList.size() + 4;
        sheet.addMergedRegion(new CellRangeAddress(remarkRowNum, remarkRowNum, 0, 6));//註釋行合併單元格

        // 尾行
        HSSFRow foot = sheet.createRow(rowNum++);
        foot.setHeight((short) 500);
        String[] row_foot = {"審覈人：", "", "填表人：", "", "填表時間：", "", ""};
        for (int i = 0; i < row_foot.length; i++) {
            HSSFCell tempCell = foot.createCell(i);
            tempCell.setCellStyle(contentStyle);
            if (i == 0) {
                tempCell.setCellValue(row_foot[i] + "張三");
            } else if (i == 2) {
                tempCell.setCellValue(row_foot[i] + "李四");
            } else if (i == 4) {
                tempCell.setCellValue(row_foot[i] + "xxxx");
            } else {
                tempCell.setCellValue(row_foot[i]);
            }
        }
        int footRowNum = dataList.size() + 5;
        // 注
        sheet.addMergedRegion(new CellRangeAddress(footRowNum, footRowNum, 0, 1));
        sheet.addMergedRegion(new CellRangeAddress(footRowNum, footRowNum, 2, 3));
        sheet.addMergedRegion(new CellRangeAddress(footRowNum, footRowNum, 4, 6));


        //導出
        //HttpServletResponse response = this.getResponse();
        String fileName = "報表名稱.xls";

        try {
           // fileName = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");
           // response.setHeader("Content-disposition", "attachment;filename=\"" + fileName + "\"");
           // OutputStream stream = response.getOutputStream();
           /* if (null != wb && null != stream) {
                wb.write(stream);// 將數據寫出去  
                wb.close();
                stream.close();
            }*/
            File file = new File("D:\\test.xlsx");
            if(file.exists()){
                file.delete();
                file.createNewFile();
            }else {
                file.createNewFile();
            }
            wb.write(file);
        } catch (Exception e) {
            e.printStackTrace();
        }

    }



    private HSSFCellStyle createContentCellStyle(HSSFWorkbook wb) {
        HSSFCellStyle cellStyle = wb.createCellStyle();
        cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);// 垂直居中
        cellStyle.setAlignment(HorizontalAlignment.CENTER);// 水平居中
        cellStyle.setWrapText(true);// 設置自動換行
        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號字體
        HSSFFont font = wb.createFont();
        font.setColor((short)8);
        font.setFontHeightInPoints((short) 12);
        cellStyle.setFont(font);

        return cellStyle;
    }

    private HSSFCellStyle createHeadCellStyle(HSSFWorkbook wb) {
        HSSFCellStyle cellStyle = wb.createCellStyle();
        cellStyle.setWrapText(true);// 設置自動換行
        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

        HSSFFont headerFont = (HSSFFont) wb.createFont(); // 創建字體樣式
        headerFont.setBold(true); //字體加粗
        headerFont.setFontName("黑體"); // 設置字體類型
        headerFont.setFontHeightInPoints((short) 12); // 設置字體大小
        cellStyle.setFont(headerFont); // 爲標題樣式設置字體樣式

        return cellStyle;
    }

    private HSSFCellStyle createTitleCellStyle(HSSFWorkbook wb) {
        HSSFCellStyle cellStyle = wb.createCellStyle();
        cellStyle.setAlignment(HorizontalAlignment.CENTER);//水平居中
        cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);//垂直對齊
        cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
        cellStyle.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());//背景顏色

        HSSFFont headerFont1 = (HSSFFont) wb.createFont(); // 創建字體樣式
        headerFont1.setBold(true); //字體加粗
        headerFont1.setFontName("黑體"); // 設置字體類型
        headerFont1.setFontHeightInPoints((short) 15); // 設置字體大小
        cellStyle.setFont(headerFont1); // 爲標題樣式設置字體樣式

        return cellStyle;
    }

    public static void main(String[] args) {
        Ted ted = new Ted();
        ted.exportExcel();

    }

}