easyExcel 多sheet导出 去除默认表头样式及设置内容居中

Excel导出接口

	/**
	 * 信息资源导出
	 */
	@PostMapping({ "/export" })
	@PreAuthorize("@pms.hasPermission('dna_resrc_export')")
	@ApiOperation(value = "信息资源导出", notes = "信息资源导出", httpMethod = "POST")
	public void exportExcel(@RequestBody DnaDirResrcPageDTO dto, HttpServletRequest request,
											  HttpServletResponse response) throws Exception {
		//新增pageWithInput方法，直接获取本身加关联,并按照解析的方式赋值
		List list = dnaResrcService.getVOList(dto);
		//目录
		List poiList = new ArrayList();
		//信息项
		List dnaDirElementPOIS = new ArrayList();

		//设置返回头
//		setResponse(response, "数据资源目录");
		response.setContentType("application/vnd.ms-excel");
		response.setCharacterEncoding("utf-8");
		// 这里URLEncoder.encode可以防止中文乱码
			String fileName = URLEncoder.encode("template", "UTF-8");
			response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".xlsx");
			//新建ExcelWriter
			ExcelWriter excelWriter = EasyExcel.write(response.getOutputStream()).build();
			//获取sheet0对象
			WriteSheet mainSheet = EasyExcel.writerSheet(0, "数据目录").head(DnaDirResrcPOI.class)
					//设置拦截器或自定义样式
					.registerWriteHandler(getStyleStrategy()).build();
			//向sheet0写入数据 传入空list这样只导出表头
			excelWriter.write(poiList, mainSheet);
			//获取sheet1对象
			WriteSheet detailSheet = EasyExcel.writerSheet(1, "信息项").head(DnaDirElementPOI.class)
					//设置拦截器或自定义样式
					.registerWriteHandler(getStyleStrategy())
					.build();
			//向sheet1写入数据 传入空list这样只导出表头
			excelWriter.write(dnaDirElementPOIS, detailSheet);
			//关闭流
			excelWriter.finish();
	}

去除默认表头样式及设置内容居中

//设置样式 去除默认表头样式及设置内容居中
	public static HorizontalCellStyleStrategy getStyleStrategy(){
		//内容样式策略
		WriteCellStyle contentWriteCellStyle = new WriteCellStyle();
		//垂直居中,水平居中
		contentWriteCellStyle.setVerticalAlignment(VerticalAlignment.CENTER);
		contentWriteCellStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);
		contentWriteCellStyle.setBorderLeft(BorderStyle.THIN);
		contentWriteCellStyle.setBorderTop(BorderStyle.THIN);
		contentWriteCellStyle.setBorderRight(BorderStyle.THIN);
		contentWriteCellStyle.setBorderBottom(BorderStyle.THIN);
		//设置 自动换行
		contentWriteCellStyle.setWrapped(true);
		// 字体策略
		WriteFont contentWriteFont = new WriteFont();
		// 字体大小
		contentWriteFont.setFontHeightInPoints((short) 12);
		contentWriteCellStyle.setWriteFont(contentWriteFont);
		//头策略使用默认
		WriteCellStyle headWriteCellStyle = new WriteCellStyle();
		headWriteCellStyle.setFillForegroundColor(IndexedColors.WHITE.getIndex());
		return new HorizontalCellStyleStrategy(headWriteCellStyle, contentWriteCellStyle);
	}