拿来即用的下载Excel模板

模板导出

拿来即用

	@PostMapping("/templateExport")
	@ApiOperation(value = "模板导出", notes = "作者：yysd")
	public ReturnObject exportAuditContent(HttpServletResponse response) throws Exception{
		ReturnObject returnObject = new ReturnObject();
        OutputStream outputStream = tryCatch2gGetOutput(response);
        HSSFWorkbook workbook = new HSSFWorkbook();
        //headers
        String[] headers=new String[]{"表头1","表头2","表头3","表头4","表头5","表头6","表头7","表头8"};
        String sheetTitle = "机电设备信息缺陷";
        ExcelForMoreSheet.exportExcel(workbook,sheetTitle,headers,outputStream);
        try {
            workbook.write(outputStream);
            outputStream.close();
            returnObject.setRedata("导出成功");
        } catch (Exception e) {
        	returnObject.setRedata("导出失败");
        }
        return returnObject;
    }

	private OutputStream tryCatch2gGetOutput(HttpServletResponse response) throws Exception{
        try {
            OutputStream output = response.getOutputStream();
            response.reset();
            String filename = "机电设备信息缺陷.xls";
            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
            response.setHeader("Content-Disposition", "attachment;filename="
                    .concat(String.valueOf(URLEncoder.encode(filename, "UTF-8"))));
            response.setHeader("Access-Control-Allow-Origin", "*");
            response.setHeader("Cache-Control", "no-cache");
            return output;
        } catch (Exception e) {
            throw new Exception("导出出错");
        }
    }

工具类

  public static void exportExcel(HSSFWorkbook workbook,String sheetTitle, String[] headers,OutputStream out)  {
    	/*
    	 * 设置表头的样式
    	 */
        // 生成一个表格
        HSSFSheet sheet = workbook.createSheet();
        workbook.setSheetName(0, sheetTitle);
        // 设置表格默认列宽度为20个字节
        sheet.setDefaultColumnWidth((short) 20);
        // 生成一个样式
        HSSFCellStyle style = workbook.createCellStyle();
       // 设置这些样式
       style.setAlignment(HorizontalAlignment.CENTER);
       style.setVerticalAlignment(VerticalAlignment.CENTER);
       //上下左右边框
       style.setBorderBottom(BorderStyle.THIN);
       style.setBorderTop(BorderStyle.THIN);
       style.setBorderLeft(BorderStyle.THIN);
       style.setBorderRight(BorderStyle.THIN);
        // 生成一个字体
       HSSFFont font = workbook.createFont();
       font.setColor(IndexedColors.BLACK.index);
        font.setFontHeightInPoints((short) 14);
        font.setFontName("黑体");
        // 把字体应用到当前的样式
        style.setFont(font);
        style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
        style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.index); //背景色

        /*
         * 设置标题样式
         */
        HSSFCellStyle titleStyle = workbook.createCellStyle();        //标题样式
        titleStyle.setAlignment(HorizontalAlignment.CENTER);
        titleStyle.setVerticalAlignment(VerticalAlignment.CENTER);
        titleStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
        titleStyle.setBorderBottom(BorderStyle.THIN);
        titleStyle.setBorderTop(BorderStyle.THIN);
        titleStyle.setBorderLeft(BorderStyle.THIN);
        titleStyle.setBorderRight(BorderStyle.THIN);
        HSSFFont ztFont = workbook.createFont();
        ztFont.setItalic(false);                     // 设置字体为斜体字
        ztFont.setColor(IndexedColors.BLACK.index);            // 将字体设置为“黑色”
        ztFont.setFontHeightInPoints((short)18);    // 将字体大小设置为18px
        ztFont.setFontName("宋体");             // 将“宋体”字体应用到当前单元格上
        ztFont.setBold(true);   //加粗
         titleStyle.setFont(ztFont); 

        // 在sheet里创建第一行，参数为行索引(excel的行)，可以是0～65535之间的任何一个
        HSSFRow row2 = sheet.createRow(0);
        row2.setHeightInPoints((short) 35);
        // 创建单元格（excel的单元格，参数为列索引，可以是0～255之间的任何一个
         HSSFCell cell2 = row2.createCell(0);
        // 合并单元格CellRangeAddress构造参数依次表示起始行，截至行，起始列， 截至列
        sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, headers.length-1));
        // 设置单元格内容
        cell2.setCellValue("机电设备缺陷信息表");
        cell2.setCellStyle(titleStyle);

        // 产生表格标题行
        HSSFRow row = sheet.createRow(1);
        row.setHeightInPoints(23);//设置行高
        sheet.setColumnWidth(0, 20*256);//设置列的宽度
        for (int i = 0; i < headers.length; i++) {
            HSSFCell cell = row.createCell((short) i);
            cell.setCellStyle(style);
            HSSFRichTextString text = new HSSFRichTextString(headers[i]);
            cell.setCellValue(text.toString());
        }
    }
    //下面代码是导出加上数据
  		// 遍历集合数据，产生数据行
		//list对应的是类型List<List<String>> 此处这个list已经是所有的数据，一行数据是List<String>
		if (list != null) {
			int index = 2;//从第一几行开始
			for (List<String> m : list) {
				row = sheet.createRow(index);
				int cellIndex = 0;
				for (String str : m) {
					HSSFCell cell = row.createCell((short) cellIndex);
					if (str == null) {
						str = "";
					}
					cell.setCellValue(str.toString());
					cellIndex++;
				}
				index++;
			}
		}

效果图，此处只是展示模板的，如果要加数据，请看上方代码最后

复杂一些的

public static void exportExcelTemplate(HSSFWorkbook workbook, String sheetTitle, String[] headersFirst, String[] headersSecond, List<String> itemNameList, List<Integer> mergeCoumn) {
		/*
		 * 设置表头的样式
		 */
		// 生成一个表格
		HSSFSheet sheet = workbook.createSheet();
		workbook.setSheetName(0, sheetTitle);
		// 设置表格默认列宽度为20个字节
		sheet.setDefaultColumnWidth((short) 20);
		// 生成一个样式
		HSSFCellStyle style = workbook.createCellStyle();
		// 设置这些样式
		style.setAlignment(HorizontalAlignment.CENTER);
		style.setVerticalAlignment(VerticalAlignment.CENTER);
		// 上下左右边框
		style.setBorderBottom(BorderStyle.THIN);
		style.setBorderTop(BorderStyle.THIN);
		style.setBorderLeft(BorderStyle.THIN);
		style.setBorderRight(BorderStyle.THIN);
		// 生成一个字体
		HSSFFont font = workbook.createFont();
		font.setColor(IndexedColors.BLACK.index);
		font.setFontHeightInPoints((short) 12);
		font.setFontName("宋体");
		// 把字体应用到当前的样式
		style.setFont(font);
		style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
		style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.index); // 背景色

		//第一层表头样式
		// 生成一个样式
		HSSFCellStyle firststyle = workbook.createCellStyle();
		// 设置这些样式
		firststyle.setAlignment(HorizontalAlignment.CENTER);
		firststyle.setVerticalAlignment(VerticalAlignment.CENTER);
		// 上下左右边框
		firststyle.setBorderBottom(BorderStyle.THIN);
		firststyle.setBorderTop(BorderStyle.THIN);
		firststyle.setBorderLeft(BorderStyle.THIN);
		firststyle.setBorderRight(BorderStyle.THIN);
		// 生成一个字体
		HSSFFont firstfont = workbook.createFont();
		firstfont.setColor(IndexedColors.BLACK.index);
		firstfont.setFontHeightInPoints((short) 12);
		firstfont.setFontName("宋体");
		// 把字体应用到当前的样式
		firststyle.setFont(firstfont);
		firststyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
		firststyle.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.index); // 背景色

		/*
		 * 设置标题样式
		 */
		HSSFCellStyle titleStyle = workbook.createCellStyle(); // 标题样式
		titleStyle.setAlignment(HorizontalAlignment.CENTER);
		titleStyle.setVerticalAlignment(VerticalAlignment.CENTER);
		titleStyle.setBorderBottom(BorderStyle.DOTTED);
		titleStyle.setBorderTop(BorderStyle.DOTTED);
		titleStyle.setBorderLeft(BorderStyle.DOTTED);
		titleStyle.setBorderRight(BorderStyle.DOTTED);
		HSSFFont ztFont = workbook.createFont();
		ztFont.setItalic(false); // 设置字体为斜体字
		ztFont.setColor(IndexedColors.BLACK.index); // 将字体设置为“黑色”
		ztFont.setFontHeightInPoints((short) 18); // 将字体大小设置为18px
		ztFont.setFontName("宋体"); // 将“宋体”字体应用到当前单元格上
		ztFont.setBold(true); // 加粗
		titleStyle.setFont(ztFont);

		// 在sheet里创建第一行，参数为行索引(excel的行)，可以是0～65535之间的任何一个
		HSSFRow row2 = sheet.createRow(0);
		row2.setHeightInPoints((short) 35);
		// 创建单元格（excel的单元格，参数为列索引，可以是0～255之间的任何一个
		HSSFCell cell2 = row2.createCell(0);
		// 合并单元格CellRangeAddress构造参数依次表示起始行，截至行，起始列， 截至列
		sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, headersSecond.length - 1));
		// 设置单元格内容
		cell2.setCellValue("机电设备信息表");
		cell2.setCellStyle(titleStyle);

		// 产生表格第一行标题行
		if (mergeCoumn != null && mergeCoumn.size() > 0){
			int column = 0;
			for (int i = 0;i<mergeCoumn.size();i++){
				if (mergeCoumn.get(i) == 0){
					if (i > 0){
						// 合并单元格CellRangeAddress构造参数依次表示起始行，截至行，起始列， 截至列
						sheet.addMergedRegion(new CellRangeAddress(1, 2, column, column));
						column += 1;
					}
				}else{
					if (i > 0 && mergeCoumn.get(i) != 1){
						// 合并单元格CellRangeAddress构造参数依次表示起始行，截至行，起始列， 截至列
						sheet.addMergedRegion(new CellRangeAddress(1, 1, column, column+mergeCoumn.get(i)-1));
						column = column+mergeCoumn.get(i);
					}else if (i > 0 && mergeCoumn.get(i) == 1){
						column = column+mergeCoumn.get(i);
					} else if (i == 0){
						// 合并单元格CellRangeAddress构造参数依次表示起始行，截至行，起始列， 截至列
						sheet.addMergedRegion(new CellRangeAddress(1, 1, column, mergeCoumn.get(i)-1));
						column += mergeCoumn.get(i);
					}
				}
			}
		}

		HSSFRow row3 = sheet.createRow(1);
		row3.setHeightInPoints(20);// 设置行高
		for (int i = 0; i < headersFirst.length; i++) {

			if (i == 0){
				HSSFCell cell3 = row3.createCell((short) 0);
				cell3.setCellStyle(firststyle);
				HSSFRichTextString text2 = new HSSFRichTextString(headersFirst[0]);
				cell3.setCellValue(text2.toString());
			}else {
				int a = 0;
				for (int i1 = 0; i1 < i; i1++) {
					if (mergeCoumn.get(i1) == 0){
						a=a+1;
					}else {
						a=mergeCoumn.get(i1)+a;
					}
				}
				HSSFCell cell3 = row3.createCell((short) a);

				cell3.setCellStyle(firststyle);
				HSSFRichTextString text2 = new HSSFRichTextString(headersFirst[i]);
				cell3.setCellValue(text2.toString());
			}

		}

		// 产生表格第二行标题行
		HSSFRow row = sheet.createRow(2);
		row.setHeightInPoints(20);// 设置行高
		sheet.setColumnWidth(0, 20 * 256);// 设置列的宽度
		for (int i = 0; i < headersSecond.length; i++) {
			HSSFCell cell = row.createCell((short) i);
			cell.setCellStyle(style);
			HSSFRichTextString text = new HSSFRichTextString(headersSecond[i]);
			cell.setCellValue(text.toString());
		}

		/*
		 * 设置下拉选
		 */
		for (int i =0 ;i <headersSecond.length;i++){
			String header = headersSecond[i];
			String[] toBeStored = itemNameList.toArray(new String[itemNameList.size()]);
			setHSSFValidation(sheet, toBeStored, 3,200,2,2);
		}
	}

效果图