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EasyPoi导出Excel

程序员文章站 2022-07-11 08:27:09
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											EasyPoi导出Excel

按照模板导出 单个导出

public String exportRewardStatistics(RewardStatistics rewardStatistics) throws Exception {
        rewardStatistics.setTemplateName("RewardStatisticsTempleteForOne.xlsx");
        TemplateExportParams params = new TemplateExportParams(uploadpath + "template/" + rewardStatistics.getTemplateName());
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("name", rewardStatistics.getRealname());
        map.put("userId", rewardStatistics.getUserid());
        map.put("implementWorkload", rewardStatistics.getImplementWorkload().toString());
        map.put("implementWorkShow", "");
        map.put("buildWorkload", rewardStatistics.getBuildWorkload().toString());
        map.put("buildWorkShow", "");
        map.put("learningWorkload", rewardStatistics.getLearningWorkload().toString());
        map.put("learningWorkShow", "一、项目获奖/n1、10.06，部级项目《名称》，军队科技进步三等奖，排名2（5分）/n10.12，部级项目");
        map.put("teachWorkload", rewardStatistics.getTeachWorkload().toString());
        map.put("teachWorkShow", "");
        map.put("awordWorkload", rewardStatistics.getAwordWorkload().toString());
        map.put("awordWorkShow", "");
        workbook = ExcelExportUtil.exportExcel(params, map);
        workbook.setSheetName(0,rewardStatistics.getRealname()+"个人工作量");
        String filename = UUID.randomUUID().toString()+".xlsx";
        FileOutputStream excelFileOutPutStream = new FileOutputStream(getAbsoluteFile(filename));
        workbook.write(excelFileOutPutStream);
        excelFileOutPutStream.flush();
        excelFileOutPutStream.close();
        return filename;
    }

TemplateExportParams params = new TemplateExportParams(uploadpath + “template/” + rewardStatistics.getTemplateName()); 获取模板路径

单个sheet页导出时，将数据拼接成键值对的形式,key值与模板中的属性保持一致。EasyPoi导出Excel

按照模板导出 批量导出

 public String exportRewardStatisticsByIds(String ids, String templateName) throws Exception {
        SimpleDateFormat formatter= new SimpleDateFormat("yyyy-MM-dd-HH_mm_ss");
        Date date = new Date(System.currentTimeMillis());
        String filename = formatter.format(date) + "工作量统计.xlsx";
        String[] idArry = ids.split(",");
        List<String> idList = new ArrayList<>(idArry.length);
        Collections.addAll(idList, idArry);
        if(idList.size() == 1){
            RewardStatistics re = getById(idList.get(0));
            re.setTemplateName(templateName);
            return exportRewardStatistics(re);
        }
        List<RewardStatistics> rewardStatisticses = new ArrayList<RewardStatistics>(this.listByIds(idList));
        TemplateExportParams params = new TemplateExportParams(uploadpath + "template/" + templateName);
        List<Map<String,Object>> mapList = new ArrayList<>();
        for (int j = 0; j < rewardStatisticses.size(); j++) {
            try {
                RewardStatistics rewardStatistics = rewardStatisticses.get(j);
                Map<String, Object> map = new HashMap<String, Object>();
                map.put("name", rewardStatistics.getRealname());
                map.put("userId", rewardStatistics.getUserid());
                map.put("implementWorkload", rewardStatistics.getImplementWorkload().toString());
                map.put("implementWorkShow", "");
                map.put("buildWorkload", rewardStatistics.getBuildWorkload().toString());
                map.put("buildWorkShow", "");
                map.put("learningWorkload", rewardStatistics.getLearningWorkload().toString());
                map.put("learningWorkShow", "一、项目获奖/n1、10.06，部级项目《名称》，军队科技进步三等奖，排名2（5分）/n10.12，部级项目");
                map.put("teachWorkload", rewardStatistics.getTeachWorkload().toString());
                map.put("teachWorkShow", "");
                map.put("awordWorkload", rewardStatistics.getAwordWorkload().toString());
                map.put("awordWorkShow", "");
                mapList.add(map);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        Map<String,Object> result = new HashMap<String, Object>() ;
        result.put("list",mapList);
        params.setSheetName("工作量统计");
        workbook = ExcelExportUtil.exportExcel(params, result);
        FileOutputStream excelFileOutPutStream = new FileOutputStream(getAbsoluteFile(filename));
        workbook.write(excelFileOutPutStream);
        excelFileOutPutStream.flush();
        excelFileOutPutStream.close();
        return filename;
    }

由于批量导出时，只选择单个数据，存在 workbook = ExcelExportUtil.exportExcel(params, result); 这里会报错显示 workbook为空，没有解决掉，因此在前面做了个判断，批量导出只导出单个时，调用单个导出的方法。
批量导出模板需要配置，{{$fe:list t.name…}} $fe:list 表示按照list循环，该命名需要与代码中的List名称一致EasyPoi导出Excel

动态列非模板导出

/**
*
* @param title
* 表格标题名
* @param headers
* 表格属性列名数组 （第一行标题） 标题必须与列名数组对应 不然会移位
* @param Col
* 需要显示的表格属性列名数组 如果是javabean 必须和字段名字一直 如果为Map 必须为Map的key名字对应
* @param dataset
* 需要显示的数据集合,集合泛型支持两种，1：符合javabean风格的类的对象 2：Map类型。此方法支持的
* javabean属性的数据类型有基本数据类型及String,Date,byte
* @param pattern
* 如果有时间数据，设定输出格式。默认为"yyy-MM-dd"
* if(pattern == null || pattern.equals("")) pattern = “yyy-MM-dd”; 可以加上判断
* @param userCol
* 这是我自身的一个逻辑
*/

public HSSFWorkbook exportExcel(String title, String[] headers, String[] Col, List<RewardDetail> dataset,String userCol) {
        // 声明一个工作薄
        HSSFWorkbook workbook = new HSSFWorkbook();
        // 生成一个表格
        HSSFSheet sheet = workbook.createSheet(title);
        // 设置表格默认列宽度为15个字节
        sheet.setDefaultColumnWidth(20);
        // 生成一个样式
        HSSFCellStyle style = workbook.createCellStyle();
        // 设置这些样式
        style.setFillForegroundColor(HSSFColor.SKY_BLUE.index);
        style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
        style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
        style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
        style.setBorderRight(HSSFCellStyle.BORDER_THIN);
        style.setBorderTop(HSSFCellStyle.BORDER_THIN);
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        // 生成一个字体
        HSSFFont font = workbook.createFont();
        font.setColor(HSSFColor.VIOLET.index);
        font.setFontHeightInPoints((short) 12);
        font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
        // 把字体应用到当前的样式
        style.setFont(font);
        // 生成并设置另一个样式
        HSSFCellStyle style2 = workbook.createCellStyle();
        style2.setFillForegroundColor(HSSFColor.WHITE.index);
        style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
        style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);
        style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);
        style2.setBorderRight(HSSFCellStyle.BORDER_THIN);
        style2.setBorderTop(HSSFCellStyle.BORDER_THIN);
        style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
        // 生成另一个字体
        HSSFFont font2 = workbook.createFont();
        font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
        // 把字体应用到当前的样式
        style2.setFont(font2);
        // 声明一个画图的*管理器
        HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
        // 产生表格标题行
        HSSFRow row = sheet.createRow(0);
        int Cell = 0;
        List<String> userColList =Arrays.asList(userCol.split(","));
        for (short i = 0; i < headers.length; i++) {
            HSSFCell cell = row.createCell(Cell);
            cell.setCellStyle(style);
            HSSFRichTextString text = new HSSFRichTextString(headers[i]);
            cell.setCellValue(text);
            Cell ++ ;
        }
        for (int i = 0;i<dataset.size();i++) {
            row = sheet.createRow(i + 1);
            String[] fields = Col;
            Cell = 0;
            for (short j = 0; j < fields.length; j++) {
                String fieldName = fields[j];
                HSSFCell cell = row.createCell(Cell);
                row.setHeightInPoints(40);
                cell.setCellStyle(style2);
                try {
                    Object value = "";
                    Class tCls = null;
                    //从这里开始就是获取单元格对应数据 如果是对象 
                    //根据反射获取对应的属性 如果是map集合，根据key值获取对应属性值
                    //使用这套导出代码，只用关注这里即可，其他地方都是样式设置
                    if(userColList.contains(fieldName)){
                        tCls = dataset.get(i).getTeacherInfo().getClass();
                        String getMethodName = "get"
                                + fieldName.substring(0, 1).toUpperCase()
                                + fieldName.substring(1);
                        Method getMethod = tCls.getMethod(getMethodName,new Class[] {});
                        value = getMethod.invoke(dataset.get(i).getTeacherInfo(), new Object[] {});
                    }else{
                        List<Map<String,List<String>>> list = dataset.get(i).getWorkRewardDetail();
                        for (Map<String,List<String>> map:list) {
                            if(map.containsKey(fieldName)){
                                value = map.get(fieldName);
                            }
                        }
                    }
                    //拼接数据到这里结束
                    if(value == null ) value = "";
                    String textValue = null;
                    textValue = value.toString();
                    if (textValue != null) {
                        Pattern p = Pattern.compile("^//d+(//.//d+)?$");
                        Matcher matcher = p.matcher(textValue);
                        if (matcher.matches()) {
                            // 是数字当作double处理
                            cell.setCellValue(Double.parseDouble(textValue));
                        } else {
                            HSSFRichTextString richString = new HSSFRichTextString(textValue);
                            HSSFFont font3 = workbook.createFont();
                            font3.setColor(HSSFColor.BLUE.index);
                            richString.applyFont(font3);
                            cell.setCellValue(richString);
                        }
                    }
                    Cell ++ ;
                }catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
        return workbook;
   }

下面是对单元格数据做判断 由于我的数据基本都是String 类型 因此我没有判断这个 这个可以添加在数据凭借完成后

 					if(value == null ) value = "";
                    // 判断值的类型后进行强制类型转换
                    String textValue = null;
                    if (value instanceof Date) {
                        Date date = (Date) value;
                        SimpleDateFormat sdf = new SimpleDateFormat(pattern);
                        textValue = sdf.format(date);
                    } else if (value instanceof byte[]) {
                        // 有图片时，设置行高为60px;
                        row.setHeightInPoints(60);
                        // 设置图片所在列宽度为80px,注意这里单位的一个换算
                        sheet.setColumnWidth(Cell, (short) (35.7 * 80));
                        // sheet.autoSizeColumn(i);
                        byte[] bsValue = (byte[]) value;
                        HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0,
                                1023, 255, (short) 6, index, (short) 6, index);
                        anchor.setAnchorType(2);
                        patriarch.createPicture(anchor, workbook.addPicture(
                                bsValue, HSSFWorkbook.PICTURE_TYPE_JPEG));
                    } else {
                        // 其它数据类型都当作字符串简单处理
                        textValue = value.toString();
                    }
                    // 如果不是图片数据，就利用正则表达式判断textValue是否全部由数字组成
                    if (textValue != null) {
                        Pattern p = Pattern.compile("^//d+(//.//d+)?$");
                        Matcher matcher = p.matcher(textValue);
                        if (matcher.matches()) {
                            // 是数字当作double处理
                            cell.setCellValue(Double.parseDouble(textValue));
                        } else {
                            HSSFRichTextString richString = new HSSFRichTextString(
                                    textValue);
                            HSSFFont font3 = workbook.createFont();
                            font3.setColor(HSSFColor.BLUE.index);
                            richString.applyFont(font3);
                            cell.setCellValue(richString);
                        }
                    }

样式可以直接调试 sheet.setDefaultColumnWidth(20); 设置单元格默认宽度 row.setHeightInPoints(40);设置行高
EasyPoi导出Excel

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