package com.ittax.core.util; import java.util.List; import javax.servlet.ServletOutputStream; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.usermodel.HSSFFont; import org.apache.poi.hssf.usermodel.HSSFHeader; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.util.CellRangeAddress; import com.ittax.nsfw.user.entity.User; /** * excel工具类,支持批量导出 * @author lizewu * */ public class ExcelUtil { /** * 将用户的信息导入到excel文件中去 * @param userList 用户列表 * @param out 输出表 */ public static void exportUserExcel(List<User> userList,ServletOutputStream out) { try{ //1.创建工作簿 HSSFWorkbook workbook = new HSSFWorkbook(); //1.1创建合并单元格对象 CellRangeAddress callRangeAddress = new CellRangeAddress(0,0,0,4);//起始行,结束行,起始列,结束列 //1.2头标题样式 HSSFCellStyle headStyle = createCellStyle(workbook,(short)16); //1.3列标题样式 HSSFCellStyle colStyle = createCellStyle(workbook,(short)13); //2.创建工作表 HSSFSheet sheet = workbook.createSheet("用户列表"); //2.1加载合并单元格对象 sheet.addMergedRegion(callRangeAddress); //设置默认列宽 sheet.setDefaultColumnWidth(25); //3.创建行 //3.1创建头标题行;并且设置头标题 HSSFRow row = sheet.createRow(0); HSSFCell cell = row.createCell(0); //加载单元格样式 cell.setCellStyle(headStyle); cell.setCellValue("用户列表"); //3.2创建列标题;并且设置列标题 HSSFRow row2 = sheet.createRow(1); String[] titles = {"用户名","账号","所属部门","性别","电子邮箱"}; for(int i=0;i<titles.length;i++) { HSSFCell cell2 = row2.createCell(i); //加载单元格样式 cell2.setCellStyle(colStyle); cell2.setCellValue(titles[i]); } //4.操作单元格;将用户列表写入excel if(userList != null) { for(int j=0;j<userList.size();j++) { //创建数据行,前面有两行,头标题行和列标题行 HSSFRow row3 = sheet.createRow(j+2); HSSFCell cell1 = row3.createCell(0); cell1.setCellValue(userList.get(j).getName()); HSSFCell cell2 = row3.createCell(1); cell2.setCellValue(userList.get(j).getAccount()); HSSFCell cell3 = row3.createCell(2); cell3.setCellValue(userList.get(j).getDept()); HSSFCell cell4 = row3.createCell(3); cell4.setCellValue(userList.get(j).isGender()?"男":"女"); HSSFCell cell5 = row3.createCell(4); cell5.setCellValue(userList.get(j).getEmail()); } } //5.输出 workbook.write(out); workbook.close(); //out.close(); }catch(Exception e) { e.printStackTrace(); } } /** * * @param workbook * @param fontsize * @return 单元格样式 */ private static HSSFCellStyle createCellStyle(HSSFWorkbook workbook, short fontsize) { // TODO Auto-generated method stub HSSFCellStyle style = workbook.createCellStyle(); style.setAlignment(HSSFCellStyle.ALIGN_CENTER);//水平居中 style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);//垂直居中 //创建字体 HSSFFont font = workbook.createFont(); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); font.setFontHeightInPoints(fontsize); //加载字体 style.setFont(font); return style; } }
//导出用户列表 public void exportExcel() { try { //1.查找用户列表 userList = userService.findObjects(); //2.导出 HttpServletResponse response = ServletActionContext.getResponse(); //这里设置的文件格式是application/x-excel response.setContentType("application/x-excel"); response.setHeader("Content-Disposition", "attachment;filename=" + new String("用户列表.xls".getBytes(), "ISO-8859-1")); ServletOutputStream outputStream = response.getOutputStream(); userService.exportExcel(userList, outputStream); if(outputStream != null) outputStream.close(); }catch(Exception e) { e.printStackTrace(); } } public String importExcel() { if(userExcel!= null) { //判断是否是Excel文件 if(userExcelFileName.matches("^.+\.(?i)((xls)|(xlsx))$")) { userService.importExcel(userExcel, userExcelFileName); } } return"list"; }
//导出用户列表 public void exportExcel() { try { //1.查找用户列表 userList = userService.findObjects(); //2.导出 HttpServletResponse response = ServletActionContext.getResponse(); //这里设置的文件格式是application/x-excel response.setContentType("application/x-excel"); response.setHeader("Content-Disposition", "attachment;filename=" + new String("用户列表.xls".getBytes(), "ISO-8859-1")); ServletOutputStream outputStream = response.getOutputStream(); userService.exportExcel(userList, outputStream); if(outputStream != null) outputStream.close(); }catch(Exception e) { e.printStackTrace(); } } public String importExcel() { if(userExcel!= null) { //判断是否是Excel文件 if(userExcelFileName.matches("^.+\.(?i)((xls)|(xlsx))$")) { userService.importExcel(userExcel, userExcelFileName); } } return"list"; }
下载完后,打开“poi-bin-3.15-20160924.tar.gz”获取操作excel需要的jar包,并将这些jar包复制到项目中。对于只操作2003 及以前版本的excel,只需要poi-3.15.jar ,如果需要同时对2007及以后版本进行操作则需要复制
poi-ooxml-3.15.jar
poi-ooxml-schemas-3.15.jar
以及复制在ooxml-lib目录下的xmlbeans-2.6.0.jar(但不知为何,我下的jar文件中没有dom4j.jar)这个文件,还是加上dom4j.jar,防止报错.