ExportExcelUtil.java
公共工具类
package com.ningpai.util; import org.apache.poi.hssf.usermodel.*; import org.apache.poi.hssf.util.HSSFColor; import org.apache.poi.ss.util.CellRangeAddress; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.io.OutputStream; import java.util.List; /** * 导出Excel工具类 * * @author ChenDaiMing * @since 2016/1/14 */ public class ExportExcelUtil { /** * Excel导出 * @author ChenDaiMing * @param response response * @param title Excel标题 <br> * 用户信息列表 <br><br> * @param columnsName Excel列名称 <br> * String[] rowsName = new String[]{"ID","账号","姓名"}; <br><br> * @param dataList 导出的数据<br> * List< Object[] > dataList = new ArrayList< Object[] >(); <br> * Object[] obj = new Object[3]; <br> * obj[0] = ID数据; <br> * obj[1] = 账号数据; <br> * obj[2] = 姓名数据; <br> */ public static void export(HttpServletResponse response, String title, String[] columnsName, List<Object[]> dataList) throws IOException { //创建工作簿对象 HSSFWorkbook workbook = new HSSFWorkbook(); //创建工作表sheet HSSFSheet sheet = workbook.createSheet(title); //产生表格标题行 HSSFRow row = sheet.createRow(0); HSSFCell cellTitle = row.createCell(0); //sheet样式定义 //获取列头样式对象 HSSFCellStyle columnTopStyle = ExportExcelUtil.getColumnTopStyle(workbook); HSSFCellStyle style = ExportExcelUtil.getStyle(workbook); //合并 sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, (columnsName.length - 1))); cellTitle.setCellStyle(columnTopStyle); cellTitle.setCellValue(title); //定义所需列数 int columnNum = columnsName.length; //创建列头行 HSSFRow rowName = sheet.createRow(2); // 将列头设置到sheet的单元格中 for (int i = 0; i < columnNum; i++) { HSSFCell cellName = rowName.createCell(i); //创建列头对应个数的单元格 cellName.setCellType(HSSFCell.CELL_TYPE_STRING); //设置列头单元格的数据类型 HSSFRichTextString text = new HSSFRichTextString(columnsName[i]); cellName.setCellValue(text); //设置列头单元格的值 cellName.setCellStyle(columnTopStyle); //设置列头单元格样式 } //将查询出的数据设置到sheet对应的单元格中 for (int i = 0; i < dataList.size(); i++) { Object[] obj = dataList.get(i);//遍历每个对象 HSSFRow tempRow = sheet.createRow(i + 3);//创建所需的行数 for (int j = 0; j < obj.length; j++) { HSSFCell cell = null; //设置单元格的数据类型 if (j == 0) { cell = tempRow.createCell(j, HSSFCell.CELL_TYPE_NUMERIC); cell.setCellValue(i + 1); } else { cell = tempRow.createCell(j, HSSFCell.CELL_TYPE_STRING); if (!"".equals(obj[j]) && obj[j] != null) { cell.setCellValue(obj[j].toString()); //设置单元格的值 } } cell.setCellStyle(style); //设置单元格样式 } } //让列宽随着导出的列长自动适应 for (int colNum = 0; colNum < columnNum; colNum++) { int columnWidth = sheet.getColumnWidth(colNum) / 256; for (int rowNum = 0; rowNum < sheet.getLastRowNum(); rowNum++) { HSSFRow currentRow; //当前行未被使用过 if (sheet.getRow(rowNum) == null) { currentRow = sheet.createRow(rowNum); } else { currentRow = sheet.getRow(rowNum); } if (currentRow.getCell(colNum) != null) { HSSFCell currentCell = currentRow.getCell(colNum); if (currentCell.getCellType() == HSSFCell.CELL_TYPE_STRING) { int length = currentCell.getStringCellValue().getBytes().length; if (columnWidth < length) { columnWidth = length; } } } } if (colNum == 0) { sheet.setColumnWidth(colNum, (columnWidth - 2) * 256); } else { sheet.setColumnWidth(colNum, (columnWidth + 4) * 256); } } //输出到客户端进行下载 OutputStream out = null; if (workbook != null) { String fileName = "Excel-" + String.valueOf(System.currentTimeMillis()).substring(4, 13) + ".xls"; String headStr = "attachment; filename=" + fileName; response.setContentType("APPLICATION/OCTET-STREAM"); response.setHeader("Content-Disposition", headStr); out = response.getOutputStream(); workbook.write(out); out.flush(); out.close(); } } /* * 列头单元格样式 */ private static HSSFCellStyle getColumnTopStyle(HSSFWorkbook workbook) { // 设置字体 HSSFFont font = workbook.createFont(); //设置字体大小 font.setFontHeightInPoints((short) 11); //字体加粗 font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); //设置字体名字 font.setFontName("Courier New"); //设置样式; HSSFCellStyle style = workbook.createCellStyle(); //设置底边框; style.setBorderBottom(HSSFCellStyle.BORDER_THIN); //设置底边框颜色; style.setBottomBorderColor(HSSFColor.BLACK.index); //设置左边框; style.setBorderLeft(HSSFCellStyle.BORDER_THIN); //设置左边框颜色; style.setLeftBorderColor(HSSFColor.BLACK.index); //设置右边框; style.setBorderRight(HSSFCellStyle.BORDER_THIN); //设置右边框颜色; style.setRightBorderColor(HSSFColor.BLACK.index); //设置顶边框; style.setBorderTop(HSSFCellStyle.BORDER_THIN); //设置顶边框颜色; style.setTopBorderColor(HSSFColor.BLACK.index); //在样式用应用设置的字体; style.setFont(font); //设置自动换行; style.setWrapText(false); //设置水平对齐的样式为居中对齐; style.setAlignment(HSSFCellStyle.ALIGN_CENTER); //设置垂直对齐的样式为居中对齐; style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); return style; } /* * 列数据信息单元格样式 */ private static HSSFCellStyle getStyle(HSSFWorkbook workbook) { // 设置字体 HSSFFont font = workbook.createFont(); //设置字体名字 font.setFontName("Courier New"); //设置样式; HSSFCellStyle style = workbook.createCellStyle(); //设置底边框; style.setBorderBottom(HSSFCellStyle.BORDER_THIN); //设置底边框颜色; style.setBottomBorderColor(HSSFColor.BLACK.index); //设置左边框; style.setBorderLeft(HSSFCellStyle.BORDER_THIN); //设置左边框颜色; style.setLeftBorderColor(HSSFColor.BLACK.index); //设置右边框; style.setBorderRight(HSSFCellStyle.BORDER_THIN); //设置右边框颜色; style.setRightBorderColor(HSSFColor.BLACK.index); //设置顶边框; style.setBorderTop(HSSFCellStyle.BORDER_THIN); //设置顶边框颜色; style.setTopBorderColor(HSSFColor.BLACK.index); //在样式用应用设置的字体; style.setFont(font); //设置自动换行; style.setWrapText(false); //设置水平对齐的样式为居中对齐; style.setAlignment(HSSFCellStyle.ALIGN_CENTER); //设置垂直对齐的样式为居中对齐; style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); return style; } }
使用Controller.java
/** * 导出销售额Excel * @param response * @param startTime * @param endTime * @author ChenDaiMing */ @RequestMapping("/exportSaleMoney") public void exportSaleMoney(HttpServletResponse response,String startTime, String endTime){ String title = "销售额统计"; String[] columnsName = {"序号","日期","PC端销售额","移动端销售额","总销售额"}; List<String> payTime = DateUtil.getAllDateBetween2Date(startTime, endTime); List<Order> orderListAll = orderService.querySaleMoneyByDay(startTime, endTime,null); List<Order> orderListPC = orderService.querySaleMoneyByDay(startTime, endTime,"0"); List<Order> orderListMobile = orderService.querySaleMoneyByDay(startTime, endTime,"1"); //总计list List<BigDecimal> totalList = new ArrayList<BigDecimal>(); List<BigDecimal> pcTotalList = new ArrayList<BigDecimal>(); List<BigDecimal> mobileTotalList = new ArrayList<BigDecimal>(); //总价 BigDecimal total = new BigDecimal(0); BigDecimal pcTotal = new BigDecimal(0); BigDecimal mobileTotal = new BigDecimal(0); //为导出的每日订单计算销售额,无销售额的为零 for(String time : payTime) { boolean flag = false; //计算总销售额 for(Order order : orderListAll) { if(time.equals(DateUtil.dateToString(order.getPayTime(), "yyyy-MM-dd"))) { flag = true; totalList.add(order.getDayMoney()); total = total.add(order.getDayMoney()); } } if(!flag){ totalList.add(new BigDecimal(0)); } flag = false; //计算PC总销售额 for(Order order : orderListPC) { if(time.equals(DateUtil.dateToString(order.getPayTime(), "yyyy-MM-dd"))) { flag = true; pcTotalList.add(order.getDayMoney()); pcTotal = pcTotal.add(order.getDayMoney()); } } if(!flag){ pcTotalList.add(new BigDecimal(0)); } flag = false; //计算移动端总销售额 for(Order order : orderListMobile) { if(time.equals(DateUtil.dateToString(order.getPayTime(), "yyyy-MM-dd"))) { flag = true; mobileTotalList.add(order.getDayMoney()); mobileTotal = mobileTotal.add(order.getDayMoney()); } } if(!flag){ mobileTotalList.add(new BigDecimal(0)); } flag = false; } //获取查询的订单数据 List<Object[]> dataList = new ArrayList<>(); //根据查询日期进行导出数据 for (int i = 0; i <payTime.size(); i++) { Object[] objs = new Object[columnsName.length]; objs[0] = i; objs[1] = payTime.get(i); objs[2] = pcTotalList.get(i); objs[3] = mobileTotalList.get(i); objs[4] = totalList.get(i); dataList.add(objs); } //销售额总计 Object[] totalObjs = new Object[columnsName.length]; totalObjs[0] = ""; totalObjs[1] = ""; totalObjs[2] = pcTotal.toString(); totalObjs[3] = mobileTotal.toString(); totalObjs[4] = total.toString(); dataList.add(totalObjs); try { ExportExcelUtil.export(response,title,columnsName,dataList); } catch (IOException e) { e.printStackTrace(); } }