easyExcel动态复杂表头导出(可直接用)

一、前端代码(仅供参考)

页面代码

<el-button type="primary" icon="el-icon-upload2" @click="download" v-loading="loading">导出</el-button>

js代码

download: function () {axios({method: "get",url: urlComme + "/pension/Report/exportTotalList",params: data,headers: {"content-type": "application/x-www-form-urlencoded","Access-Token": window.sessionStorage.token},timeout: 600000,withCredentials: true,responseType: "blob"}).then(function (response) {vm_phe.loading = false;if (response.data.token == "-1") {vue.$confirm("未登录或登录过期！", "警告", {confirmButtonText: "确定",cancelButtonText: "取消",type: "error"}).then(() => {if (parent.parent != undefined) {parent.window.location = "/index.html?v=" + timestamp();} else if (parent != undefined) {parent.window.location = "/index.html?v=" + timestamp();} else {window.location = "/index.html?v=" + timestamp();}});}else{let nameData = "统计表.xlsx";vm_phe.downloadDoc(response.data, nameData);}});}
}

downloadDoc: function (fileData, filename) {var blob = new Blob([fileData]);if (window.navigator.msSaveOrOpenBlob) {navigator.msSaveBlob(blob, filename);} else {var a = document.createElement("a");var url = window.URL.createObjectURL(blob);if (!url) {url = window.webkitURL.createObjectURL(blob);}a.href = url;a.download = filename;if (navigator.userAgent.indexOf("Firefox") > -1) {let e = document.createEvent("MouseEvents");e.initEvent("click", true, true);a.dispatchEvent(e);} else {a.click();}// a.click()window.URL.revokeObjectURL(url);}},

二、后端代码

引入pom

<dependency><groupId>com.alibaba</groupId><artifactId>easyexcel</artifactId><version>2.2.6</version>
</dependency>

接口部分

    @GetMapping("/exportTotalList")@ApiOperation(value = "导出统计表", notes = "****")public void exportTotalList(@RequestParam Map<String, String> map, HttpServletRequest request, HttpServletResponse response) throws IOException {SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");//表头处理String[] headArray = new String[]{};List<List<String>> headList = new ArrayList<>();//表内数据处理List<Map<Integer, Object>> mapList = new ArrayList<>();response.setContentType("application/vnd.ms-excel");response.setCharacterEncoding("utf-8");String fileName = null;try {fileName = URLEncoder.encode("***统计表", "UTF-8");} catch (UnsupportedEncodingException e) {e.printStackTrace();}String dataName = "***统计表";//如果第二行有时间范围则为0，否则为1String type = "0";//第一行第二行合并列数int columns = headList.size() - 1;//如果有时间范围则设置时间范围，否则设置成空(根据需求自行设置)String timeFrame = sdf.format(new Date());// 头的策略WriteCellStyle headWriteCellStyle = new WriteCellStyle();// 背景设置为红色
//        headWriteCellStyle.setFillForegroundColor(IndexedColors.RED.getIndex());WriteFont headWriteFont = new WriteFont();headWriteFont.setFontHeightInPoints((short) 10);headWriteCellStyle.setWriteFont(headWriteFont);WriteFont contentWriteFont = new WriteFont();// 字体大小contentWriteFont.setFontHeightInPoints((short) 10);// 内容的策略WriteCellStyle contentWriteCellStyle = setWriteCellStyle(contentWriteFont);// 这个策略是 头是头的样式 内容是内容的样式 其他的策略可以自己实现HorizontalCellStyleStrategy horizontalCellStyleStrategy = new HorizontalCellStyleStrategy(headWriteCellStyle, contentWriteCellStyle);response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".xlsx");try {EasyExcel.write(response.getOutputStream()).registerWriteHandler(new DetectionSheetWriteHandler(dataName, type, columns, timeFrame)).registerWriteHandler(horizontalCellStyleStrategy).head(headList).relativeHeadRowIndex(2).sheet("***统计表").doWrite(firstDetail(mapList));} catch (IOException e) {e.printStackTrace();}}

relativeHeadRowIndex(2)表示表头从第二行开始处理

表头数据处理

    //动态表头数据传入public static List<List<String>> firstHead(String[] header) {List<List<String>> headTitles = Lists.newArrayList();//根据具体业务处理int k = 0;for (String h : header) {if (k > 0) {headTitles.add(Lists.newArrayList(h, h, "人数"));headTitles.add(Lists.newArrayList(h, h, "工时"));} else {headTitles.add(Lists.newArrayList(h));}k++;}return headTitles;}

相邻两个表头数据一样，表头会合并

表内数据处理

    private List<List<Object>> firstDetail(List<Map<Integer, Object>> mapList) {List<List<Object>> list = new ArrayList<List<Object>>();for (Map<Integer, Object> map : mapList) {List<Object> objectList = new ArrayList<>();for (Integer key : map.keySet()) {objectList.add(map.get(key));}list.add(objectList);}return list;}

内容策略

    // 内容的策略private WriteCellStyle setWriteCellStyle(WriteFont font) {WriteCellStyle contentWriteCellStyle = new WriteCellStyle();// 这里需要指定 FillPatternType 为FillPatternType.SOLID_FOREGROUND 不然无法显示背景颜色.头默认了 FillPatternType所以可以不指定
//        contentWriteCellStyle.setFillPatternType(FillPatternType.);contentWriteCellStyle.setBorderBottom(BorderStyle.THIN);contentWriteCellStyle.setBorderLeft(BorderStyle.THIN);contentWriteCellStyle.setBorderRight(BorderStyle.THIN);contentWriteCellStyle.setBorderTop(BorderStyle.THIN);// 背景绿色
//        contentWriteCellStyle.setFillForegroundColor(IndexedColors.WHITE.getIndex());contentWriteCellStyle.setWriteFont(font);return contentWriteCellStyle;}

6.自定义处理

public class DetectionSheetWriteHandler implements SheetWriteHandler {private String titleName;private String type;private int columns;private String timeFrame;public DetectionSheetWriteHandler() {}public DetectionSheetWriteHandler(String titleName, String type, int columns, String timeFrame) {this.titleName = titleName;this.type = type;this.columns = columns;this.timeFrame = timeFrame;}@Overridepublic void beforeSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) {}@Overridepublic void afterSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) {Workbook workbook = writeWorkbookHolder.getWorkbook();Sheet sheet = workbook.getSheetAt(0);Row row1 = sheet.createRow(0);row1.setHeight((short) 500);Cell row1Cell1 = row1.createCell(0);row1Cell1.setCellValue(titleName);CellStyle row1CellStyle = workbook.createCellStyle();row1CellStyle.setVerticalAlignment(VerticalAlignment.CENTER);row1CellStyle.setAlignment(HorizontalAlignment.CENTER);
//        row1CellStyle.setTopBorderColor((short) 10);
//        row1CellStyle.setLeftBorderColor((short) 10);
//        row1CellStyle.setBottomBorderColor((short) 10);
//        row1CellStyle.setRightBorderColor((short) 10);
//        row1CellStyle.setBorderBottom(BorderStyle.THIN);
//        row1CellStyle.setBorderLeft(BorderStyle.THIN);
//        row1CellStyle.setBorderRight(BorderStyle.THIN);
//        row1CellStyle.setBorderTop(BorderStyle.THIN);row1Cell1.setCellStyle(row1CellStyle);//合并单元格，起始行,结束行,起始列,结束列sheet.addMergedRegionUnsafe(new CellRangeAddress(0, 0, 0, columns));if (type.equals("0")) {//0有时间范围Row row2 = sheet.createRow(1);row2.setHeight((short) 500);Cell row2Cell1 = row2.createCell(0);row2Cell1.setCellValue("时间范围：" + timeFrame);CellStyle row2CellStyle = workbook.createCellStyle();row2CellStyle.setVerticalAlignment(VerticalAlignment.CENTER);row2CellStyle.setAlignment(HorizontalAlignment.RIGHT);Font row2Font = workbook.createFont();row2Font.setFontName("宋体");row2Font.setFontHeightInPoints((short) 10);row2CellStyle.setFont(row2Font);row2Cell1.setCellStyle(row2CellStyle);sheet.addMergedRegionUnsafe(new CellRangeAddress(1, 1, 0, columns));}}
}

导出excel样例
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easyExcel动态复杂表头导出

easyExcel动态复杂表头导出(可直接用)

一、前端代码(仅供参考)

二、后端代码

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