java导出包含多个sheet的Excel代码示例
本文实例为大家分享了java导出包含多个sheet的Excel的具体代码,供大家参考,具体内容如下
要导出多个sheet,关键就是Excel导出的时间设定,在执行导出文件之前,创建多个工作表
HSSFSheet sheet = workbook.createSheet(sheettitle);
这样每创建一个工作表,便会生成一个新的sheet表,在最后导出Excel的时候一次性导出。
示例:
Java类:
try { HSSFWorkbook workbook = new HSSFWorkbook(); OutputStream out = response.getOutputStream(); for(int j=0;j<n;j++){ BaseResult<List<T>> teasalList = service.select(teasal); //接下来循环list放到Excel表中 if(teasalList.isSuccess()&&teasalList.getResult().size()>0){ //文件标题 SimpleDateFormat formatter1 = new SimpleDateFormat("yyyy-MM-dd"); String nowdate = formatter1.format(new Date()); String title = null; title = "excel表格标题-" + nowdate + ".xls"; String sheettitle = "sheet表名"; //设置表格标题行 String oneheaders = "首行标题" ; String dateheaders = nowdate ; String[] headers = new String[] {"列1","列2","列3","列4"}; List<Object[]> dataList = new ArrayList<Object[]>(); Object[] objs = null; for(int i =0; i<3 ; i++){ //循环每一条数据 objs = new Object[headers.length]; objs[1] = "张三"; //姓名 objs[2] = "3"; //序号 //数据添加到excel表格 dataList.add(objs); } //使用流将数据导出 //防止中文乱码 String headStr = "attachment; filename=\"" + new String( title.getBytes("gb2312"), "ISO8859-1" ) + "\""; response.setContentType("octets/stream"); response.setContentType("APPLICATION/OCTET-STREAM"); response.setHeader("Content-Disposition", headStr); ExportExcelDownFee ex ; ex = new ExportExcelDownFee(sheettitle, oneheaders, dateheaders,headers, dataList);//没有标题 ex.export(workbook,out); } } workbook.write(out); //循环生成多个sheet之后在导出Excel out.close(); //关闭流 } catch (Exception e) { e.printStackTrace(); }
工具类:
public class ExportExcelDownFee { //导出表的列名 private String[] rowName ; //导出表的小标题 private String oneheaders; //导出表的日期 private String dateheaders; //sheet表表名 private String sheettitle; private List<Object[]> dataList = new ArrayList<Object[]>(); HttpServletResponse response; //构造方法2,传入要导出的数据 public ExportExcelDownFee( String sheettitle, String oneheaders, String dateheaders, String[] rowName,List<Object[]> dataList){ this.dataList = dataList; this.oneheaders = oneheaders; this.dateheaders = dateheaders; this.rowName = rowName; this.sheettitle = sheettitle; } /* * 导出数据 * */ public void export(HSSFWorkbook workbook,OutputStream out) throws Exception{ try{ HSSFSheet sheet = workbook.createSheet(sheettitle); // 创建工作表 HSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook);//获取列头样式对象 HSSFCellStyle style = this.getStyle(workbook); //单元格样式对象 //第一行 HSSFRow rowfirstName = sheet.createRow(0); HSSFCell oneCellRowName = rowfirstName.createCell(0); //创建列头对应个数的单元格 oneCellRowName.setCellType(HSSFCell.CELL_TYPE_STRING); //设置列头单元格的数据类型 HSSFRichTextString onetext = new HSSFRichTextString(oneheaders); oneCellRowName.setCellValue(onetext); //设置列头单元格的值 //合并单元格CellRangeAddress构造参数依次表示起始行,截至行,起始列, 截至列 sheet.addMergedRegion(new CellRangeAddress(0,0,0,3)); oneCellRowName.setCellStyle(columnTopStyle); //设置列头单元格样式 //第二行 HSSFRow rowDateName = sheet.createRow(1); HSSFCell DateCellRowName = rowDateName.createCell(3); DateCellRowName.setCellValue(dateheaders); DateCellRowName.setCellStyle(columnTopStyle); // 定义所需列数 int columnNum = rowName.length; HSSFRow rowRowName = sheet.createRow(2); // 在索引2的位置创建行(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); //创建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(style); //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);//遍历每个对象 HSSFRow row = sheet.createRow(i+3);//创建所需的行数(从第二行开始写数据) 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 = 0; try { length = currentCell.getStringCellValue().getBytes().length; } catch (Exception e) { e.printStackTrace(); } if (columnWidth < length) { columnWidth = length; } } } } if(colNum == 0){ sheet.setColumnWidth(colNum, (columnWidth-2) * 256); }else{ sheet.setColumnWidth(colNum, (columnWidth+4) * 256); } } }catch(Exception e){ e.printStackTrace(); } } /* * 列头单元格样式 */ 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("宋体"); //设置样式; HSSFCellStyle style = workbook.createCellStyle(); //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; } /* * 列数据信息单元格样式 */ public HSSFCellStyle getStyle(HSSFWorkbook workbook) { // 设置字体 HSSFFont font = workbook.createFont(); //设置字体名字 font.setFontName("宋体"); //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; } }
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