第一步 加入依赖 java
<!-- excel 导出 --> <!-- https://mvnrepository.com/artifact/org.apache.poi/poi --> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.14</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.14</version> </dependency>
第二部 添加导出工具类apache
package com.hello.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; /** * @Title: * @TODO: * @Created By yangjie.idea@gmail.com on 2018/10/18/018 16:24 * @param */ public class ExportToExcelUtil { /** * 导出excel * @param title 导出表的标题 * @param rowsName 导出表的列名 * @param dataList 须要导出的数据 * @param fileName 生成excel文件的文件名 * @param response */ public void exportExcel(String title,String[] rowsName,List<Object[]> dataList,String fileName,HttpServletResponse response) throws Exception{ OutputStream output = response.getOutputStream(); response.reset(); response.setHeader("Content-disposition","attachment; filename="+fileName); response.setContentType("application/msexcel"); this.export(title,rowsName,dataList,fileName,output); this.close(output); } /** * @Title: * @TODO:导出数据 * @Created By yangjie.idea@gmail.com on 2018/10/18/018 16:25 * @param */ private void export(String title,String[] rowName,List<Object[]> dataList,String fileName,OutputStream out) throws Exception { try { HSSFWorkbook workbook = new HSSFWorkbook(); // 建立工做簿对象 HSSFSheet sheet = workbook.createSheet(title); // 建立工做表 HSSFRow rowm = sheet.createRow(0); // 产生表格标题行 HSSFCell cellTiltle = rowm.createCell(0); //建立表格标题列 // sheet样式定义; getColumnTopStyle(); getStyle()均为自定义方法 --在下面,可扩展 HSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook);// 获取列头样式对象 HSSFCellStyle style = this.getStyle(workbook); // 获取单元格样式对象 //合并表格标题行,合并列数为列名的长度,第一个0为起始行号,第二个1为终止行号,第三个0为起始列号,第四个参数为终止列号 sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, (rowName.length - 1))); cellTiltle.setCellStyle(columnTopStyle); //设置标题行样式 cellTiltle.setCellValue(title); //设置标题行值 int columnNum = rowName.length; // 定义所需列数 HSSFRow rowRowName = sheet.createRow(2); // 在索引2的位置建立行(最顶端的行开始的第二行) // 将列头设置到sheet的单元格中 for (int n = 0; n < columnNum; n++) { HSSFCell cellRowName = rowRowName.createCell(n); // 建立列头对应个数的单元格 cellRowName.setCellType(HSSFCell.CELL_TYPE_STRING); // 设置列头单元格的数据类型 HSSFRichTextString text = new HSSFRichTextString(rowName[n]); cellRowName.setCellValue(text); // 设置列头单元格的值 cellRowName.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); // 遍历每一个对象 HSSFRow row = sheet.createRow(i + 3); // 建立所需的行数 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 = 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 } } 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); } } workbook.write(out); } catch (Exception e) { e.printStackTrace(); } } /** * @Title: * @TODO:列头单元格样式 * @Created By yangjie.idea@gmail.com on 2018/10/18/018 16:25 * @param */ private 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; } /** * @Title: * @TODO:列数据信息单元格样式 * @Created By yangjie.idea@gmail.com on 2018/10/18/018 16:26 * @param */ private 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; } /** * 关闭输出流 * @param os */ private void close(OutputStream os) { if (os != null) { try { os.close(); } catch (IOException e) { e.printStackTrace(); } } } }
第三部 测试app
/** * @Title: * @TODO:数据统计 导出 * @Created By yangjie.idea@gmail.com on 2018/10/18/018 10:24 * @param */ @RequestMapping("/exportToExcel") public void exportExcelData( HttpServletResponse response){ Log.logger.info("数据统计导出开始" ); // 定义表的标题 String title = "数据统计"; //定义表的列名 String[] rowsName = new String[] {"序号", "字段", "被保险人", "险种", "实收保费", "系统跟单费用比例%", "已结收付费", "已结收开流程","追加金额", "字段","车牌号", "保险费","签单保费","出单机构", "添加日期"}; //定义表的内容 List<Object[]> dataList = new ArrayList<Object[]>(); List<PscSettlementBatchDetailListVO> list = detailInfoMapper.queryInvoiceSettlementBatchDetailPageExport(); int i = 0; for(PscSettlementBatchDetailListVO vo:list){ Object[] objs = new Object[15]; objs[1] = vo.getPolicyNo(); objs[2] = vo.getInsuredPerson(); objs[3] = vo.getInsuranceType().equals("1")?"商业险":(vo.getInsuranceType().equals("2")?"交强险":"其余险"); objs[4] = vo.getInsuranceAmount(); objs[5] = vo.getDocumentaryCostRate(); objs[6] = vo.getPaidSettlementAmount(); objs[7] = vo.getPaidStatus().equals(1)?"已打包":(vo.getPaidStatus().equals(2)?"已开":"未打包"); objs[8] = vo.getAdditionalAmount(); objs[9] = vo.getAddStatus().equals(1)?"已打包":(vo.getAddStatus().equals(2)?"已开":"未打包"); objs[10] = vo.getLicensePlateNo(); objs[11] = vo.getInsuranceAmount(); objs[12] = vo.getWrittenInsuranceAmount(); objs[13] = vo.getIcOrgName(); SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); String date = df.format(vo.getAddTime()); objs[14] = date; dataList.add(i++,objs); } // 建立ExportExcel对象 ExportToExcelUtil excelUtil = new ExportToExcelUtil(); try{ String fileName= new String("数据统计.xlsx".getBytes("UTF-8"),"iso-8859-1"); excelUtil.exportExcel(title,rowsName,dataList,fileName,response); Log.logger.info("数据统计导出结束" ); }catch(Exception e){ e.printStackTrace(); } }
测试结果ide