整理了一些关于Spring 中如何用poi导出excel的文章，如下：
导出excel 工具类的写法
[html] view plain copy package com.fuiou.MyProject.unit; import java.io.IOException; import java.io.OutputStream; import java.net.URLEncoder; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletResponse; 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.HSSFRichTextString; 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.hssf.util.HSSFColor; import org.apache.poi.ss.util.CellRangeAddress; public class ExportExcelUtils { private String title; // 导出表格的表名 private String[] rowName;// 导出表格的列名 private List<Object[]> dataList = new ArrayList<Object[]>(); // 对象数组的List集合 private HttpServletResponse response; // 传入要导入的数据 public ExportExcelUtils(String title,String[] rowName,List<Object[]> dataList,HttpServletResponse response){ this.title=title; this.rowName=rowName; this.dataList=dataList; this.response = response; } // 导出数据 public void exportData(){ try { HSSFWorkbook workbook =new HSSFWorkbook(); // 创建一个excel对象 HSSFSheet sheet =workbook.createSheet(title); // 创建表格 // 产生表格标题行 HSSFRow rowm =sheet.createRow(0); // 行 HSSFCell cellTiltle =rowm.createCell(0); // 单元格 // sheet样式定义 HSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook); // 头样式 HSSFCellStyle style = this.getStyle(workbook); // 单元格样式 /** * 参数说明 * 从0开始 第一行 第一列 都是从角标0开始 * 行 列 行列 (0,0,0,5) 合并第一行 第一列 到第一行 第六列 * 起始行，起始列，结束行，结束列 * * new Region() 这个方法使过时的 */ // 合并第一行的所有列 sheet.addMergedRegion(new CellRangeAddress(0, (short) 0, 0, (short) (rowName.length-1))); cellTiltle.setCellStyle(columnTopStyle); cellTiltle.setCellValue(title); int columnNum = rowName.length; // 表格列的长度 HSSFRow rowRowName = sheet.createRow(1); // 在第二行创建行 HSSFCellStyle cells =workbook.createCellStyle(); cells.setBottomBorderColor(HSSFColor.BLACK.index); rowRowName.setRowStyle(cells); // 循环 将列名放进去 for (int i = 0; i < columnNum; i++) { HSSFCell cellRowName = rowRowName.createCell((int)i); cellRowName.setCellType(HSSFCell.CELL_TYPE_STRING); // 单元格类型 HSSFRichTextString text = new HSSFRichTextString(rowName[i]); // 得到列的值 cellRowName.setCellValue(text); // 设置列的值 cellRowName.setCellStyle(columnTopStyle); // 样式 } // 将查询到的数据设置到对应的单元格中 for (int i = 0; i < dataList.size(); i++) { Object[] obj = dataList.get(i);//遍历每个对象 HSSFRow row = sheet.createRow(i+2);//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){ // 第一列设置为序号 cell = row.createCell(j,HSSFCell.CELL_TYPE_NUMERIC); cell.setCellValue(i+1); }else{ cell = row.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 }else{ cell.setCellValue(" "); } } cell.setCellStyle(style); // 样式 } } // 让列宽随着导出的列长自动适应 sheet.autoSizeColumn((short)0); //调整第一列宽度 sheet.autoSizeColumn((short)1); //调整第二列宽度 sheet.autoSizeColumn((short)2); //调整第三列宽度 sheet.autoSizeColumn((short)3); //调整第四列宽度 sheet.autoSizeColumn((short)4); //调整第五列宽度 sheet.autoSizeColumn((short)5); //调整第六列宽度 if(workbook !=null){ try { // excel 表文件名 String fileName = title + String.valueOf(System.currentTimeMillis()).substring(4, 13) + ".xls"; String fileName11 = URLEncoder.encode(fileName,"UTF-8"); String headStr = "attachment; filename=\"" + fileName11 + "\""; response.setContentType("APPLICATION/OCTET-STREAM"); response.setHeader("Content-Disposition", headStr); OutputStream out = response.getOutputStream(); workbook.write(out); out.flush(); out.close(); } catch (IOException e) { e.printStackTrace(); } } }catch(Exception e){ e.printStackTrace(); } } public 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; } public HSSFCellStyle getStyle(HSSFWorkbook workbook) { // 设置字体 HSSFFont font = workbook.createFont(); //设置字体大小 //font.setFontHeightInPoints((short)10); //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; } } jsp 页面
[html] view plain copy <td><a href="${pageContext.request.contextPath}/user/exportExcel.action">导出数据</a></td> controller 层中的代码
[html] view plain copy @RequestMapping(value ="/exportExcel.action") public ModelAndView exportExcel(HttpServletRequest request,HttpServletResponse response){ try { UserInfoPO user =new UserInfoPO(); // 查出用户数据 List<UserInfoPO> userlist = userInfoService.queryList(user); String title ="用户信息表"; String[] rowsName=new String[]{"序号","ID","用户名","性别","登录id","登录密码"}; List<Object[]> dataList = new ArrayList<Object[]>(); Object[] objs = null; for (int i = 0; i < userlist.size(); i++) { UserInfoPO po =userlist.get(i); objs = new Object[rowsName.length]; objs[0] = i; objs[1] = po.getId(); objs[2] = po.getUserName(); objs[3] = po.getSex(); objs[4] = po.getLoginId(); objs[5] = po.getLoginPassword(); dataList.add(objs); } // ExportExcelUtils ex =new ExportExcelUtils(title, rowsName, dataList,response); ex.exportData(); } catch (Exception e) { e.printStackTrace(); } return null; } 原文地址 http://blog.csdn .NET /wangchangpen62/article/details/44410967
原文地址 http://blog.csdn .NET /wangchangpen62/article/details/44410967
