本文作为自己记录笔记
看到摩课网视频有介绍java导入导出Excel的视频，看了一下就想着实践一下，本文用的poi导出Excel
工具类
public class ExportUtil {
private XSSFWorkbook wb = null;
private XSSFSheet sheet = null;
/**
* @param wb
* @param sheet
*/
public ExportUtil(XSSFWorkbook wb, XSSFSheet sheet)
{
this.wb = wb;
this.sheet = sheet;
}
/**
* 合并单元格后给合并后的单元格加边框
*
* @param region
* @param cs
*/
public void setRegionStyle(CellRangeAddress region, XSSFCellStyle cs)
{
int toprowNum = region.getFirstRow();
for (int i = toprowNum; i <= region.getLastRow(); i++)
{
XSSFRow row = sheet.getRow(i);
for (int j = region.getFirstColumn(); j <= region.getLastColumn(); j++)
{
XSSFCell cell = row.getCell(j);// XSSFCellUtil.getCell(row,
// (short) j);
cell.setCellStyle(cs);
}
}
}
/**
43 * 设置表头的单元格样式
44 *
45 * @return
46 */
public XSSFCellStyle getHeadStyle()
{
// 创建单元格样式
XSSFCellStyle cellStyle = wb.createCellStyle();
// 设置单元格的背景颜色为淡蓝色
cellStyle.setFillForegroundColor(HSSFColor.PALE_BLUE.index);
cellStyle.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);
// 设置单元格居中对齐
cellStyle.setAlignment(XSSFCellStyle.ALIGN_CENTER);
// 设置单元格垂直居中对齐
cellStyle.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);
// 创建单元格内容显示不下时自动换行
cellStyle.setWrapText(true);
// 设置单元格字体样式
XSSFFont font = wb.createFont();
// 设置字体加粗
font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);
font.setFontName("宋体");
font.setFontHeight((short) 200);
cellStyle.setFont(font);
// 设置单元格边框为细线条
cellStyle.setBorderLeft(XSSFCellStyle.BORDER_THIN);
cellStyle.setBorderBottom(XSSFCellStyle.BORDER_THIN);
cellStyle.setBorderRight(XSSFCellStyle.BORDER_THIN);
cellStyle.setBorderTop(XSSFCellStyle.BORDER_THIN);
return cellStyle;
}
/**
76 * 设置表体的单元格样式
77 *
78 * @return
79 */
public XSSFCellStyle getBodyStyle()
{
// 创建单元格样式
XSSFCellStyle cellStyle = wb.createCellStyle();
// 设置单元格居中对齐
cellStyle.setAlignment(XSSFCellStyle.ALIGN_CENTER);
// 设置单元格垂直居中对齐
cellStyle.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);
// 创建单元格内容显示不下时自动换行
cellStyle.setWrapText(true);
// 设置单元格字体样式
XSSFFont font = wb.createFont();
// 设置字体加粗
font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);
font.setFontName("宋体");
font.setFontHeight((short) 200);
cellStyle.setFont(font);
// 设置单元格边框为细线条
cellStyle.setBorderLeft(XSSFCellStyle.BORDER_THIN);
cellStyle.setBorderBottom(XSSFCellStyle.BORDER_THIN);
cellStyle.setBorderRight(XSSFCellStyle.BORDER_THIN);
cellStyle.setBorderTop(XSSFCellStyle.BORDER_THIN);
return cellStyle;
}
}
主要方法(导出订单)
public void exportExcel(List<OrderBean> orderList,String[] titles, ServletOutputStream outputStream) {
// TODO Auto-generated method stub
//数据
// List<User> orderList = dao.findUser(0, 3);
// 创建一个workbook 对应一个excel应用文件
XSSFWorkbook workBook = new XSSFWorkbook();
// 在workbook中添加一个sheet,对应Excel文件中的sheet
XSSFSheet sheet = workBook.createSheet("导出订单excel例子");
ExportUtil exportUtil = new ExportUtil(workBook, sheet);
//头部样式
XSSFCellStyle headStyle = exportUtil.getHeadStyle();
//内容样式
XSSFCellStyle bodyStyle = exportUtil.getBodyStyle();
// 构建表头
XSSFRow headRow = sheet.createRow(0);
XSSFCell cell = null;
for (int i = 0; i < titles.length; i++)
{
cell = headRow.createCell(i);
cell.setCellStyle(headStyle);
cell.setCellValue(titles[i]);
}
// 构建表体数据
if (orderList != null && orderList.size() > 0)
{
for (int j = 0; j < orderList.size(); j++)
{
XSSFRow bodyRow = sheet.createRow(j + 1);
OrderBean order = orderList.get(j);
cell = bodyRow.createCell(0);
cell.setCellStyle(bodyStyle);
cell.setCellValue(order.getUser().getUsername());
cell = bodyRow.createCell(1);
cell.setCellStyle(bodyStyle);
cell.setCellValue(order.getMoveArrang().getMove().getName());
cell = bodyRow.createCell(2);
//cell.setCellStyle(bodyStyle);
XSSFCellStyle bodyStyle1 = workBook.createCellStyle();
//格式化时间
XSSFDataFormat format= workBook.createDataFormat();
bodyStyle1.setDataFormat(format.getFormat("yyyy-MM-dd"));
bodyStyle1.setBorderLeft(XSSFCellStyle.BORDER_THIN);
bodyStyle1.setBorderBottom(XSSFCellStyle.BORDER_THIN);
bodyStyle1.setBorderRight(XSSFCellStyle.BORDER_THIN);
bodyStyle1.setBorderTop(XSSFCellStyle.BORDER_THIN);
cell.setCellValue(order.getDate());
cell.setCellStyle(bodyStyle1);
cell = bodyRow.createCell(3);
cell.setCellStyle(bodyStyle);
cell.setCellValue(order.getTotal());
cell = bodyRow.createCell(4);
cell.setCellStyle(bodyStyle);
cell.setCellValue(order.getState());
cell = bodyRow.createCell(5);
cell.setCellStyle(bodyStyle);
cell.setCellValue(order.getTelephoto());
}
}
try
{
workBook.write(outputStream);
outputStream.flush();
outputStream.close();
}
catch (IOException e)
{
e.printStackTrace();
}
finally
{
try
{
outputStream.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
传入相关数据
@RequestMapping("/orderExcel")
public String exportExcel(HttpServletResponse response,HttpServletRequest request) {
HttpSession session = request.getSession();
List<OrderBean> orderList = (List<OrderBean>) session.getAttribute("OrderList");
response.setContentType("application/binary;charset=ISO8859_1");
try
{ System.out.println("excel");
ServletOutputStream outputStream = response.getOutputStream();
String fileName = new String(("导出订单excel例子").getBytes(), "ISO8859_1");
response.setHeader("Content-disposition", "attachment; filename=" + fileName + ".xlsx");// 组装附件名称和格式
String[] titles = { "下单者", "电影名称", "上映日期", "价格", "下单状态", "取票手机号码" };
orderService.exportExcel(orderList, titles, outputStream);
}
catch (IOException e)
{
e.printStackTrace();
}
return null;
}
导入相关jar包
<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.14</version> </dependency>