poi带表头多sheet导出

亦凉 2023-10-15 09:45 150阅读 0赞

导出工具类

package com.hieasy.comm.core.excel;
    
    
    import com.hieasy.comm.core.excel.fragment.ExcelFragment;
    import com.hieasy.comm.core.utils.mine.MineDateUtil;
    import org.apache.poi.hssf.usermodel.*;
    import org.apache.poi.ss.usermodel.*;
    import org.apache.poi.ss.util.CellRangeAddress;
    import org.apache.poi.ss.util.CellRangeAddressList;
    import org.apache.poi.xssf.usermodel.XSSFCellStyle;
    import org.apache.poi.xssf.usermodel.XSSFFont;
    
    import java.lang.reflect.Field;
    import java.util.List;
    import java.util.regex.Matcher;
    import java.util.regex.Pattern;
    
    public class CsExcelUtils<T> {
        
        HSSFRow row=null;//行
        HSSFCell cell=null;//单元格
        CellStyle style =null;//单元格样式
        Class<T> clazz;
    
        public CsExcelUtils(Class<T> clazz) {
        
            super();
            this.clazz = clazz;
        }
        /*同表头多sheet导出*/
        public  void   myExcelExportClassList(String fileName, String sheetName, String[][] excelHeader, Class clazz, List<T> list, HSSFWorkbook workbook) throws Exception{
        
    
            HSSFSheet sheet = workbook.createSheet(sheetName); // 为excel创建一个sheet页
            Integer rowIndex=0; //行号
            List<Field> fields = ExcelFragment.fltMappedFileds(ExcelFragment.getMappedFiled(clazz, null),1);
            Integer maxcols=fields.size()>excelHeader[0].length?fields.size():excelHeader[0].length; //列号
            //导出Excel时间：2018-12-27
            HSSFRow row = sheet.createRow(rowIndex++);
            sheet.addMergedRegion(new CellRangeAddress(0,0,0,maxcols-1));
            HSSFCell cell = row.createCell(0);
            cell.setCellValue("导出Excel时间："+ MineDateUtil.getNowDateTime());
            CellStyle cellStyle=getTitle1CellStyler(workbook);
            cell.setCellStyle(cellStyle); // 为B2单元格添加样式
            //大标题
            row = sheet.createRow(rowIndex++);
            row.setHeight((short) (25*20));
            sheet.addMergedRegion(new CellRangeAddress(1,1,0,maxcols-1));
            cell = row.createCell(0);
            cell.setCellValue(fileName);
            cellStyle=getTitle2CellStyler(workbook);
            cell.setCellStyle(cellStyle);
            //Excel 头部占位
            Integer eHBeginRowIndex=rowIndex; //记录Excel头开始行
            rowIndex+=excelHeader.length;     //留空Excel头
            //Table 表头数据
            Integer chRowIndex=    writeExcelHeader(maxcols,eHBeginRowIndex,excelHeader, sheet, workbook);
            //Table BODY的数据
            writeTableBodyOrFooterFromTList(list, chRowIndex,fields,sheet,workbook);
    
        }
        private Integer writeTableBodyOrFooterFromTList(List<T> list, Integer rowIndex,List<java.lang.reflect.Field> fields, HSSFSheet sheet, HSSFWorkbook workbook) throws NoSuchFieldException, SecurityException {
        
            //正式的数据
            row=sheet.createRow(rowIndex);
            autoColumnWidthForChineseChar(sheet,0,fields.size());
            for (int i = 0; i < fields.size(); i++) {
        
                java.lang.reflect.Field field = fields.get(i);
                ExcelVOAttribute attr = field.getAnnotation(ExcelVOAttribute.class);
                int col = getExcelCol(attr.column());// 获得列号
                cell = row.createCell(col);// 创建列
                cell.setCellType(Cell.CELL_TYPE_STRING);// 设置列中写入内容为String类型
                cell.setCellValue(attr.name());
                style = getHeadCellStyler(workbook);
                // 如果设置了提示信息则鼠标放上去提示.
                if (!attr.prompt().trim().equals("")) {
        
                    setSXSSFPrompt(sheet, "", attr.prompt(), 3, 100, col, col);// 这里默认设了2-101列提示.
                }
                // 如果设置了combo属性则本列只能选择不能输入
                if (attr.combo().length > 0) {
        
                    setSXSSFValidation(sheet, attr.combo(), 3, 100, col, col);// 这里默认设了2-101列只能选择不能输入.
                }
                cell.setCellStyle(style);
            }
            rowIndex++;
            //4.设置具体内容
            int startNo = 0;
            int z = rowIndex;
            int endNo = list.size();
            // 写入各条记录,每条记录对应excel表中的一行
            for (int i = startNo; i < endNo; i++) {
        
                row =sheet.createRow(i + z);
                T vo = (T) list.get(i); // 得到导出对象.
                for (int j = 0; j < fields.size(); j++) {
        
                    java.lang.reflect.Field field = fields.get(j);// 获得field.
                    field.setAccessible(true);// 设置实体类私有属性可访问
                    ExcelVOAttribute attr = field.getAnnotation(ExcelVOAttribute.class);
                    try {
        
                        // 根据ExcelVOAttribute中设置情况决定是否导出,有些情况需要保持为空,希望用户填写这一列.
                        if (attr.isExport()) {
        
                            cell = row.createCell(getExcelCol(attr.column()));// 创建cell
                            // 取得类型,并根据对象类型设置值.
                            Class<?> fieldType = field.getType();
                            if (String.class == fieldType) {
        
                                cell.setCellType(Cell.CELL_TYPE_STRING);
                                cell.setCellValue(field.get(vo) == null ? "" : String.valueOf(field.get(vo)));// 如果数据存在就填入,不存在填入空格.
                            } else if ((Integer.TYPE == fieldType) || (Integer.class == fieldType)) {
        
                                cell.setCellType(Cell.CELL_TYPE_NUMERIC);
                                cell.setCellValue(field.get(vo) == null ? 0 : Integer.parseInt(field.get(vo).toString()));
                            } else if ((Long.TYPE == fieldType) || (Long.class == fieldType)) {
        
                                cell.setCellType(Cell.CELL_TYPE_NUMERIC);
                                cell.setCellValue(field.get(vo) == null ? 0 : Long.parseLong(field.get(vo).toString()));
                            } else if ((Float.TYPE == fieldType) || (Float.class == fieldType)) {
        
                                cell.setCellType(Cell.CELL_TYPE_NUMERIC);
                                cell.setCellValue(field.get(vo) == null ? 0 : Double.parseDouble(field.get(vo).toString()));
                            } else if ((Short.TYPE == fieldType) || (Short.class == fieldType)) {
        
    
                            } else if ((Double.TYPE == fieldType) || (Double.class == fieldType)) {
        
                                cell.setCellType(Cell.CELL_TYPE_NUMERIC);
                                cell.setCellValue(field.get(vo) == null ? 0 : Double.parseDouble(field.get(vo).toString()));
                            } else if (Character.TYPE == fieldType) {
        
    
                            }
                        }
                    } catch (IllegalArgumentException e) {
        
                        e.printStackTrace();
                    } catch (IllegalAccessException e) {
        
                        e.printStackTrace();
                    }
                }
                rowIndex++;
            }
            return rowIndex;
        }
    
        private static Integer writeExcelHeader(int maxcols, Integer eHBeginRowIndex, String[][] excelHeader, Sheet sheet, HSSFWorkbook workbook) {
        
            for (String[] hrows : excelHeader) {
        
                /*CellRangeAddress region =new CellRangeAddress(eHBeginRowIndex,eHBeginRowIndex,0,maxcols-1);
                sheet.addMergedRegion(region);*/
                Row row = sheet.createRow(eHBeginRowIndex);
                row.setHeight((short) (25 * 20));
                int cellIndex = 0;
                for (int i = 0; i < maxcols; i++) {
        
                    Cell cell = row.createCell(i);
                    cell.setCellStyle(getExcelHeadCellStyler(workbook));
                    if ((!sheet.isColumnHidden(i)) && cellIndex < hrows.length) {
        
                        cell.setCellValue(hrows[cellIndex++]);
                    }
                }
                autoColumnWidthForChineseChar(sheet,0,maxcols);
                eHBeginRowIndex++;
            }
            return eHBeginRowIndex;
        }
        //设置样式(导出时间)
        private static CellStyle getTitle1CellStyler(HSSFWorkbook workbook ){
        
            CellStyle style = workbook.createCellStyle();
            // 设置样式
            style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
            style.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);
            style.setBorderBottom(XSSFCellStyle.NO_FILL);
            style.setBorderLeft(XSSFCellStyle.NO_FILL);
            style.setBorderRight(XSSFCellStyle.NO_FILL);
            style.setBorderTop(XSSFCellStyle.NO_FILL);
            style.setAlignment(XSSFCellStyle.ALIGN_LEFT);
            // 生成表头字体
            Font font = workbook.createFont();
            font.setColor(IndexedColors.BLACK.getIndex());
            font.setFontHeightInPoints((short) 10);
            //font.setFontName("微软雅黑");
            // 把字体应用到当前的样式
            style.setFont(font);
            return style;
        }
    
        //设置样式(导出标题)
        private static CellStyle getTitle2CellStyler(HSSFWorkbook workbook ){
        
            CellStyle style = workbook.createCellStyle();
            // 设置样式
            style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
            style.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);
            style.setBorderBottom(XSSFCellStyle.NO_FILL);
            style.setBorderLeft(XSSFCellStyle.NO_FILL);
            style.setBorderRight(XSSFCellStyle.NO_FILL);
            style.setBorderTop(XSSFCellStyle.NO_FILL);
            style.setAlignment(XSSFCellStyle.ALIGN_CENTER);
            // 生成表头字体
            Font font = workbook.createFont();
            font.setColor(IndexedColors.BLACK.getIndex());
            font.setFontHeightInPoints((short) 20);
            font.setFontName("微软雅黑");
            font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);
            //font.setFontName("微软雅黑");
            // 把字体应用到当前的样式
            style.setFont(font);
            return style;
        }
        //设置样式(EXCEL表头)
        public static CellStyle getExcelHeadCellStyler(HSSFWorkbook workbook ){
        
            CellStyle style = workbook.createCellStyle();
            style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
            style.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);
            style.setBorderBottom(XSSFCellStyle.NO_FILL);
            style.setBorderLeft(XSSFCellStyle.NO_FILL);
            style.setBorderRight(XSSFCellStyle.NO_FILL);
            style.setBorderTop(XSSFCellStyle.NO_FILL);
            // 生成表头字体
            Font font = workbook.createFont();
            font.setColor(IndexedColors.DARK_TEAL.getIndex());
            font.setFontHeightInPoints((short) 11);
            font.setFontName("微软雅黑");
            font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);
            style.setFont(font);
            return style;
        }
        //设置样式(表头)
        public static CellStyle getHeadCellStyler(HSSFWorkbook workbook ){
        
            CellStyle style = workbook.createCellStyle();
            style.setFillForegroundColor(IndexedColors.LIGHT_CORNFLOWER_BLUE.getIndex());
            style.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);
            style.setBorderBottom(XSSFCellStyle.BORDER_THIN);
            style.setBorderLeft(XSSFCellStyle.BORDER_THIN);
            style.setBorderRight(XSSFCellStyle.BORDER_THIN);
            style.setBorderTop(XSSFCellStyle.BORDER_THIN);
            style.setAlignment(XSSFCellStyle.ALIGN_CENTER);
            // 生成表头字体
            Font font = workbook.createFont();
            font.setColor(IndexedColors.DARK_BLUE.getIndex());
            font.setFontHeightInPoints((short) 10);
            font.setFontName("微软雅黑");
            font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);
            style.setFont(font);
            return style;
        }
    
        //将EXCEL中A,B,C,D,E列映射成0,1,2,3
        private static int getExcelCol(String col) {
        
            col = col.toUpperCase();
            // 从-1开始计算,字母重1开始运算。这种总数下来算数正好相同。
            int count = -1;
            char[] cs = col.toCharArray();
            for (int i = 0; i < cs.length; i++) {
        
                count += (cs[i] - 64) * Math.pow(26, cs.length - 1 - i);
            }
            return count;
        }
        // 设置单元格上提示
        private Sheet setSXSSFPrompt(Sheet sheet, String promptTitle, String promptContent, int firstRow, int endRow, int firstCol, int endCol) {
        
            // 构造constraint对象
            DVConstraint constraint = DVConstraint.createCustomFormulaConstraint("DD1");
            // 四个参数分别是：起始行、终止行、起始列、终止列
            CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
            // 数据有效性对象
            DataValidation data_validation_view = new HSSFDataValidation(regions, constraint);
            data_validation_view.createPromptBox(promptTitle, promptContent);
            sheet.addValidationData(data_validation_view);
            return sheet;
        }
    
        //设置某些列的值只能输入预制的数据,显示下拉框.
        private Sheet setSXSSFValidation(Sheet sheet, String[] textlist, int firstRow, int endRow, int firstCol, int endCol) {
        
            // 加载下拉列表内容
            DVConstraint constraint = DVConstraint.createExplicitListConstraint(textlist);
            // 设置数据有效性加载在哪个单元格上,四个参数分别是：起始行、终止行、起始列、终止列
            CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
            // 数据有效性对象
            DataValidation data_validation_list = new HSSFDataValidation(regions, constraint);
            sheet.addValidationData(data_validation_list);
            return sheet;
        }
    
        /**
         * 自动调整列表宽度适应中文字符串
         * @param sheet
         * @param startColumnNum 要调整的起始列表号
         * @param size  要调整的列表数量
         */
        private static void autoColumnWidthForChineseChar(Sheet sheet, int startColumnNum, int size) {
        
            for (int columnNum = 0; columnNum < size; columnNum++) {
        
                /** 调整每一列宽度 */
                sheet.autoSizeColumn(columnNum);
                /** 获取列宽 */
                final int columnWidth = sheet.getColumnWidth(columnNum);
                if(columnNum >= 256*256 ){
        
                    /** 列宽已经超过最大列宽则放弃当前列遍历 */
                    continue;
                }
                /** 新的列宽 */
                int newWidth = columnWidth;
                /** 遍历所有的行,查找有汉字的列计算新的最大列宽 */
                for (int rowNum = 0; rowNum <= sheet.getLastRowNum(); rowNum++) {
        
                    Row currentRow;
                    if (sheet.getRow(rowNum) == null) {
        
                        continue;
                    } else {
        
                        currentRow = sheet.getRow(rowNum);
                    }
                    if (currentRow.getCell(columnNum) != null) {
        
                        Cell currentCell = currentRow.getCell(columnNum);
                        if (currentCell.getCellType() == HSSFCell.CELL_TYPE_STRING) {
        
                            String value = currentCell.getStringCellValue();
                            /** 计算字符串中中文字符的数量 */
                            int count = chineseCharCountOf(value);
                            /**在该列字符长度的基础上加上汉字个数计算列宽 */
                            int length = value.length()*256+count*256*2;
                            /** 使用字符串的字节长度计算列宽 */
    //	                    int length = value.getBytes().length*256;
                            if (newWidth < length && length < 256*256) {
        
                                newWidth = length;
                            }
                        }
                    }
                }
                if(newWidth != columnWidth){
        
                    //设置列宽
                    sheet.setColumnWidth(columnNum, newWidth);
                }
            }
        }
        /**
         * 计算字符串中中文字符的数量
         * 参见 <a hrft="https://www.cnblogs.com/straybirds/p/6392306.html">《汉字unicode编码范围》</a>
         * @param input
         * @return
         */
        private static int chineseCharCountOf(String input){
        
            int count = 0;//汉字数量
            if(null != input){
        
                String regEx = "[\\u4e00-\\u9fa5]";
                Pattern p = Pattern.compile(regEx);
                Matcher m = p.matcher(input);
                int len = m.groupCount();
                //获取汉字个数
                while (m.find()) {
        
                    for (int i = 0; i <= len; i++) {
        
                        count = count + 1;
                    }
                }
            }
            return count;
        }
    }

导出实体主表类

public class Daochuzb {
        
    
        private String zbzd1;
        private String zbzd2;
        private String zbzd3;
        private String zbzd4;
        private String zbzd5;
    
        public String getZbzd1() {
        
            return zbzd1;
        }
    
        public void setZbzd1(String zbzd1) {
        
            this.zbzd1 = zbzd1;
        }
    
        public String getZbzd2() {
        
            return zbzd2;
        }
    
        public void setZbzd2(String zbzd2) {
        
            this.zbzd2 = zbzd2;
        }
    
        public String getZbzd3() {
        
            return zbzd3;
        }
    
        public void setZbzd3(String zbzd3) {
        
            this.zbzd3 = zbzd3;
        }
    
        public String getZbzd4() {
        
            return zbzd4;
        }
    
        public void setZbzd4(String zbzd4) {
        
            this.zbzd4 = zbzd4;
        }
    
        public String getZbzd5() {
        
            return zbzd5;
        }
    
        public void setZbzd5(String zbzd5) {
        
            this.zbzd5 = zbzd5;
        }
    }

导出sheet1表

public class Daochusheet1 {
        
        @ExcelVOAttribute(name = "字段1",column="A")
        private String zd1;
        @ExcelVOAttribute(name = "字段2",column="B")
        private String zd2;
        @ExcelVOAttribute(name = "字段3",column="C")
        private String zd3;
        @ExcelVOAttribute(name = "字段4",column="D")
        private String zd4;
    
        public Daochusheet1() {
        
        }
    
        public Daochusheet1(String zd1, String zd2, String zd3, String zd4) {
        
            this.zd1 = zd1;
            this.zd2 = zd2;
            this.zd3 = zd3;
            this.zd4 = zd4;
        }
    
        public String getZd1() {
        
            return zd1;
        }
    
        public void setZd1(String zd1) {
        
            this.zd1 = zd1;
        }
    
        public String getZd2() {
        
            return zd2;
        }
    
        public void setZd2(String zd2) {
        
            this.zd2 = zd2;
        }
    
        public String getZd3() {
        
            return zd3;
        }
    
        public void setZd3(String zd3) {
        
            this.zd3 = zd3;
        }
    
        public String getZd4() {
        
            return zd4;
        }
    
        public void setZd4(String zd4) {
        
            this.zd4 = zd4;
        }
    }

导出sheet2表

public class Daochusheet2 {
        
        @ExcelVOAttribute(name = "字段1",column="A")
        private String zd1;
        @ExcelVOAttribute(name = "字段2",column="B")
        private String zd2;
        @ExcelVOAttribute(name = "字段3",column="C")
        private String zd3;
        @ExcelVOAttribute(name = "字段4",column="D")
        private String zd4;
        @ExcelVOAttribute(name = "字段4",column="E")
        private String zd5;
    
        public Daochusheet2() {
        
        }
    
        public Daochusheet2(String zd1, String zd2, String zd3, String zd4, String zd5) {
        
            this.zd1 = zd1;
            this.zd2 = zd2;
            this.zd3 = zd3;
            this.zd4 = zd4;
            this.zd5 = zd5;
        }
    
        public String getZd1() {
        
            return zd1;
        }
    
        public void setZd1(String zd1) {
        
            this.zd1 = zd1;
        }
    
        public String getZd2() {
        
            return zd2;
        }
    
        public void setZd2(String zd2) {
        
            this.zd2 = zd2;
        }
    
        public String getZd3() {
        
            return zd3;
        }
    
        public void setZd3(String zd3) {
        
            this.zd3 = zd3;
        }
    
        public String getZd4() {
        
            return zd4;
        }
    
        public void setZd4(String zd4) {
        
            this.zd4 = zd4;
        }
    
        public String getZd5() {
        
            return zd5;
        }
    
        public void setZd5(String zd5) {
        
            this.zd5 = zd5;
        }
    }

导出

@NoRepeatSubmit
        @PostMapping("/exportcs")
        @ApiOperation(value = "导出测试", notes = "")
        public void exportcs(HttpServletResponse response) throws Exception {
        
            response.setContentType("application/octet-stream");
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(" 导出测试.xls","UTF-8"));
            HSSFWorkbook workbook = new HSSFWorkbook();  // 创建一个excel
            String[][] excelHeader=new String[2][3];
    
            excelHeader[0][0]="主表字段1";
            excelHeader[0][1]="主表字段2";
            excelHeader[0][2]="主表字段3";
    
            excelHeader[1][0]="主表字段4";
            excelHeader[1][1]="主表字段5";
            excelHeader[1][2]="";
            List<Daochusheet1> list1=new ArrayList<>();
            Daochusheet1 daochusheet1=new Daochusheet1("sheet11","sheet12","sheet13","sheet14");
            list1.add(daochusheet1);
            List<Daochusheet2> list2=new ArrayList<>();
            Daochusheet2 daochusheet2=new Daochusheet2("sheet21","sheet22","sheet23","sheet24","sheet25");
            list2.add(daochusheet2);
            CsExcelUtils<Daochusheet1> myExcelUtils=new CsExcelUtils(Daochusheet1.class);
            myExcelUtils.myExcelExportClassList("导出sheet1","导出sheet1",excelHeader,Daochusheet1.class,list1,workbook);
            CsExcelUtils<Daochusheet2> myExcelUtils1=new CsExcelUtils(Daochusheet2.class);
            myExcelUtils1.myExcelExportClassList("导出sheet2","导出sheet2",excelHeader,Daochusheet2.class, list2,workbook);
    
            FileOutputStream fos =null;
            //输出流
            try {
        
                fos = new FileOutputStream("D:\\导出测试.xls");
                workbook.write(fos);
                fos.flush();
            } catch (IOException e) {
        
                e.printStackTrace();
            } finally {
        
                try {
        
                    fos.close();
                } catch (IOException e) {
        
                    e.printStackTrace();
                }
            }
        }

导出结果

![在这里插入图片描述][238fc47c860543bdb46fb1a801f9a788.png]

[238fc47c860543bdb46fb1a801f9a788.png]: https://img-blog.csdnimg.cn/238fc47c860543bdb46fb1a801f9a788.png