jexcel 应用实例

import java.io.File;import java.io.FileOutputStream; import java.io.OutputStream; import java.util.Date; import jxl.Cell;import jxl.Sheet;import jxl.Workbook; import jxl.format.Alignment; import jxl.format.Border; import jxl.format.BorderLineStyle; import jxl.format.Colour; import jxl.format.VerticalAlignment; import jxl.write.Label; import jxl.write.NumberFormat; import jxl.write.WritableCellFormat; import jxl.write.WritableFont; import jxl.write.WritableSheet; import jxl.write.WritableWorkbook; import jxl.write.WriteException; public class JExcelUtils { /** * 生成Excel文件 * @param path 文件路径 * @param sheetName 工作表名称 * @param dataTitles 数据标题 */ public void createExcelFile(String path,String sheetName,String[] dataTitles){ WritableWorkbook workbook; try{ OutputStream os=new FileOutputStream(path); workbook=Workbook.createWorkbook(os); WritableSheet sheet = workbook.createSheet(sheetName, 0); //添加第一个工作表 //setRowView(int row, int height);--行高 //sheet.setRowView(0,100); //setColumnView(int col,int width); --列宽 sheet.setColumnView(0,20); Label label; for (int i=0; i<dataTitles.length; i++){ //Label(列号,行号,内容,风格) label = new Label(i, 0, dataTitles[i],getTitleCellFormat()); sheet.addCell(label); } //插入一行 insertRowData(sheet,1,new String[]{"200201001","张三","100","60","100","260"},getDataCellFormat(String.class)); //一个一个插入行 label = new Label(0, 2,"200201002",getDataCellFormat(String.class)); sheet.addCell(label); label = new Label(1, 2,"李四",getDataCellFormat(String.class)); sheet.addCell(label); insertOneCellData(sheet,2,2,70.5,getDataCellFormat(Double.class)); insertOneCellData(sheet,3,2,90.5,getDataCellFormat(Double.class)); insertOneCellData(sheet,4,2,60.5,getDataCellFormat(Double.class)); insertOneCellData(sheet,5,2,221.5,getDataCellFormat(Double.class)); //插入日期 mergeCellsAndInsertData(sheet, 0, 3, 5, 3, new Date(), getDataCellFormat(Date.class)); workbook.write(); workbook.close(); }catch(Exception e){ e.printStackTrace(); } } /** * 插入一行数据 * @param sheet 工作表 * @param row 行号 * @param content 内容 * @param format 风格 */ public void insertRowData(WritableSheet sheet,Integer row,String[] dataArr,WritableCellFormat format){ try{ Label label; for(int i=0;i<dataArr.length;i++){ label = new Label(i,row,dataArr[i],format); sheet.addCell(label); } }catch(Exception e){ e.printStackTrace(); } } /** * 插入单元格数据 * @param sheet * @param col * @param row * @param data */ public void insertOneCellData(WritableSheet sheet,Integer col,Integer row,Object data,WritableCellFormat format){ try{ if(data instanceof Double){ jxl.write.Number labelNF = new jxl.write.Number(col,row,(Double)data,format); sheet.addCell(labelNF); }else if(data instanceof Boolean){ jxl.write.Boolean labelB = new jxl.write.Boolean(col,row,(Boolean)data,format); sheet.addCell(labelB); }else if(data instanceof Date){ jxl.write.DateTime labelDT = new jxl.write.DateTime(col,row,(Date)data,format); sheet.addCell(labelDT); }else{ Label label = new Label(col,row,data.toString(),format); sheet.addCell(label); } }catch(Exception e){ e.printStackTrace(); } } /** * 合并单元格，并插入数据 * @param sheet * @param col_start * @param row_start * @param col_end * @param row_end * @param data * @param format */ public void mergeCellsAndInsertData(WritableSheet sheet,Integer col_start,Integer row_start,Integer col_end,Integer row_end,Object data, WritableCellFormat format){ try{ sheet.mergeCells(col_start,row_start,col_end,row_end);//左上角到右下角 insertOneCellData(sheet, col_start, row_start, data, format); }catch(Exception e){ e.printStackTrace(); } } /** * 得到数据表头格式 * @return */ public WritableCellFormat getTitleCellFormat(){ WritableCellFormat wcf = null; try { //字体样式 WritableFont wf = new WritableFont(WritableFont.TIMES,12, WritableFont.NO_BOLD,false);//最后一个为是否italic wf.setColour(Colour.RED); wcf = new WritableCellFormat(wf); //对齐方式 wcf.setAlignment(Alignment.CENTRE); wcf.setVerticalAlignment(VerticalAlignment.CENTRE); //边框 wcf.setBorder(Border.ALL,BorderLineStyle.THIN); //背景色 wcf.setBackground(Colour.GREY_25_PERCENT); } catch (WriteException e) { e.printStackTrace(); } return wcf; } /** * 得到数据格式 * @return */ @SuppressWarnings("unchecked")public WritableCellFormat getDataCellFormat(Class clazz){ WritableCellFormat wcf = null; try { //字体样式 if(clazz.getName().endsWith("Double")){//数字 NumberFormat nf = new NumberFormat("#.#"); wcf = new WritableCellFormat(nf); }else if(clazz.getName().endsWith("Date")){//日期 jxl.write.DateFormat df = new jxl.write.DateFormat("yyyy-MM-dd hh:mm:ss"); wcf = new jxl.write.WritableCellFormat(df); }else{ WritableFont wf = new WritableFont(WritableFont.TIMES,10, WritableFont.NO_BOLD,false);//最后一个为是否italic wcf = new WritableCellFormat(wf); } //对齐方式 wcf.setAlignment(Alignment.CENTRE); wcf.setVerticalAlignment(VerticalAlignment.CENTRE); //边框 wcf.setBorder(Border.LEFT,BorderLineStyle.THIN); wcf.setBorder(Border.BOTTOM,BorderLineStyle.THIN); wcf.setBorder(Border.RIGHT,BorderLineStyle.THIN); //背景色 wcf.setBackground(Colour.WHITE); wcf.setWrap(true);//自动换行 } catch (WriteException e) { e.printStackTrace(); } return wcf; } /** * 打开文件看看 * @param exePath * @param filePath */ public void openExcel(String exePath,String filePath){ Runtime r=Runtime.getRuntime(); String cmd[]={exePath,filePath}; try{ r.exec(cmd); }catch(Exception e){ e.printStackTrace(); } } /** * 读取excel * @param filePath */ public void readExcel(String filePath){ try { Workbook book = Workbook.getWorkbook(new File(filePath)); // 获得第一个工作表对象 Sheet sheet = book.getSheet(0); System.out.println("总列数:"+sheet.getColumns()); System.out.println("总行数:"+sheet.getRows()); // 得到单元格 for (int i = 0; i < sheet.getRows(); i++) { for (int j = 0; j < sheet.getColumns(); j++) { Cell cell = sheet.getCell(j, i); System.out.print(cell.getContents() + " "); } System.out.println(); } book.close(); } catch (Exception e) { System.out.println(e); } } public static void main(String[] args){ String[] titles = {"学号","姓名","语文","数学","英语","总分"}; JExcelUtils jxl = new JExcelUtils(); String filePath = "E:/test.xls"; jxl.createExcelFile(filePath,"成绩单",titles); jxl.openExcel("C:/Program Files/Microsoft Office/OFFICE11/EXCEL.EXE",filePath); jxl.readExcel(filePath); } }