Util类
package com.common.util; 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);
}
}
} /**
* 设置表头的单元格样式
*
* @return
*/
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;
} /**
* 设置表体的单元格样式
*
* @return
*/
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;
}
}
service类
public interface ITestExportExcelService
{
public void exportExcel(String hql,String [] titles,ServletOutputStream outputStream);
}
@Service
public class TestExportExcelServiceImpl implements ITestExportExcelService
{
@Resource
private ITestExportExcelDao dao; public void exportExcel(String hql, String[] titles, ServletOutputStream outputStream)
{
List<Goods> list = dao.exportExcel(hql);
// 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excel例子");
ExportUtil exportUtil = new ExportUtil(workBook, sheet);
XSSFCellStyle headStyle = exportUtil.getHeadStyle();
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 (list != null && list.size() > 0)
{
for (int j = 0; j < list.size(); j++)
{
XSSFRow bodyRow = sheet.createRow(j + 1);
Goods goods = list.get(j); cell = bodyRow.createCell(0);
cell.setCellStyle(bodyStyle);
cell.setCellValue(goods.getGoodsName()); cell = bodyRow.createCell(1);
cell.setCellStyle(bodyStyle);
cell.setCellValue(goods.getGoodsCost()); cell = bodyRow.createCell(2);
cell.setCellStyle(bodyStyle);
cell.setCellValue(goods.getGoodsUnit());
}
}
try
{
workBook.write(outputStream);
outputStream.flush();
outputStream.close();
}
catch (IOException e)
{
e.printStackTrace();
}
finally
{
try
{
outputStream.close();
}
catch (IOException e)
{
e.printStackTrace();
}
} } }
dao类
public interface ITestExportExcelDao
{
public List<Goods> exportExcel(String hql);
}
@Repository
public class TestExportExcelDaoImpl implements ITestExportExcelDao
{
@Resource
private SessionFactory factory; /**
* 以goods表为例导出测试
*/
@SuppressWarnings("unchecked")
public List<Goods> exportExcel(String hql)
{
Session session = factory.getCurrentSession();
List<Goods> list = session.createQuery(hql).list();
return list;
} }
控制层Controller
@Controller
@RequestMapping("/testexportexcel/*")
public class TestExportExcelController
{
@Resource
private ITestExportExcelService service; @RequestMapping
public String exportExcel(HttpServletResponse response)
{
response.setContentType("application/binary;charset=ISO8859_1");
try
{
ServletOutputStream outputStream = response.getOutputStream();
String fileName = new String(("导出excel例子").getBytes(), "ISO8859_1");
response.setHeader("Content-disposition", "attachment; filename=" + fileName + ".xlsx");// 组装附件名称和格式
String hql = "from Goods";
String[] titles = { "商品名", "商品单价", "商品单位" };
service.exportExcel(hql, titles, outputStream);
}
catch (IOException e)
{
e.printStackTrace();
}
return null;
} @RequestMapping
public String upload(HttpServletRequest request, HttpServletResponse response)
{
MultipartHttpServletRequest mulRequest = (MultipartHttpServletRequest) request;
MultipartFile file = mulRequest.getFile("excel");
String filename = file.getOriginalFilename();
if (filename == null || "".equals(filename))
{
return null;
}
try
{
InputStream input = file.getInputStream();
XSSFWorkbook workBook = new XSSFWorkbook(input);
XSSFSheet sheet = workBook.getSheetAt(0);
if (sheet != null)
{
for (int i = 1; i < sheet.getPhysicalNumberOfRows(); i++)
{
XSSFRow row = sheet.getRow(i);
for (int j = 0; j < row.getPhysicalNumberOfCells(); j++)
{
XSSFCell cell = row.getCell(j);
String cellStr = cell.toString();
System.out.print("【"+cellStr+"】 ");
}
System.out.println();
} }
}
catch (Exception e)
{
e.printStackTrace();
}
return "/test/uploadExcel.jsp";
} }
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.14</version>
</dependency>