jxl的简单使用
项目中做统计的时候有时需要生成统计execl报表，java生成execl可以通过jxl包来实现。很简单的说明一下其使用package com.gdapp.oa.app;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.text.SimpleDateFormat;import java.util.Date;import java.util.List;import jxl.Cell;import jxl.Sheet;import jxl.Workbook;import jxl.format.Alignment;import jxl.format.Border;import jxl.format.BorderLineStyle;import jxl.format.CellFormat;import jxl.format.VerticalAlignment;import jxl.write.Label;import jxl.write.WritableCellFormat;import jxl.write.WritableFont;import jxl.write.WritableSheet;import jxl.write.WritableWorkbook;import jxl.write.WriteException;public class ExcelAPP{private static void createTitle(WritableSheet wsheet) throws Exception{wsheet.addCell(new Label(0, 2, "信件号"));wsheet.addCell(new Label(1, 2, "信件类型"));wsheet.addCell(new Label(2, 2, "信件标题"));wsheet.addCell(new Label(3, 2, "信件内容"));wsheet.addCell(new Label(4, 2, "发信人"));wsheet.addCell(new Label(5, 2, "邮政编码"));wsheet.addCell(new Label(6, 2, "发信人地址"));wsheet.addCell(new Label(7, 2, "电话"));wsheet.addCell(new Label(8, 2, "发信人信箱"));wsheet.addCell(new Label(9, 2, "信件状态"));wsheet.addCell(new Label(10, 2, "转发/办理部门"));wsheet.addCell(new Label(11, 2, "来信时间"));wsheet.addCell(new Label(12, 2, "分办时间"));wsheet.addCell(new Label(13, 2, "办回时间"));}private static String toUtf8String(String s){StringBuffer sb = new StringBuffer();for (int i = 0; i < s.length(); i++){char c = s.charAt(i);if (c >= 0 && c <= 255){sb.append(c);} else{byte[] b;try{b = Character.toString(c).getBytes("utf-8");} catch (Exception ex){System.out.println(ex);b = new byte;}for (int j = 0; j < b.length; j++){int k = b;if (k < 0)k += 256;sb.append("%" + Integer.toHexString(k).toUpperCase());}}}return sb.toString();}//直接在本地生成文件static void writeXls(){System.out.println("writing exls.");WritableWorkbook wwb = null;WritableSheet sheet = null;try{String xlsName = "c:\\excel2.xls";File afile = new File(xlsName);if (!afile.exists()){afile.createNewFile();}wwb = Workbook.createWorkbook(afile);sheet = wwb.createSheet("bicashy的测试", 0); //创建标签页WritableFont wf = new WritableFont(WritableFont.TIMES, 10,WritableFont.BOLD, false);//WritableFont wf = new WritableFont(WritableFont.ARIAL, 16,//WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,//Colour.BLACK);WritableCellFormat format = new WritableCellFormat(wf);//添加格式化样式format.setAlignment(Alignment.CENTRE); //设置水平对齐方式format.setVerticalAlignment(VerticalAlignment.CENTRE); //设置垂直对齐方式//remember,the first parameter is column index.Label cell = new Label(0, 0, "row 1,column 1", format);//set the value of cell (0,0)sheet.addCell(cell);cell = new Label(1, 0, "row 1,column 2", format);sheet.addCell(cell);cell = new Label(0, 1, "row 2,column 1", format);sheet.addCell(cell);createTitle(sheet);//将第四行合并前三列，行列默认都是从0开始的sheet.mergeCells(0,3,2,3);cell = new Label(0,3,"合并了三个单元格", format); sheet.addCell(cell);sheet.mergeCells(0,4,0,6);cell = new Label(0,4,"合并三列", format); sheet.addCell(cell);wwb.write();System.out.println("finished.");} catch (WriteException e){e.printStackTrace();} catch (Exception e){e.printStackTrace();} finally{if (wwb != null){try{wwb.close();} catch (Exception e1){e1.printStackTrace();}}}} //直接在本地生成统计文件static void writeXlsTJ(){// 准备设置excel工作表的标题String[] title = {"编号","产品名称","产品价格","产品数量","生产日期","产地","是否出口"};try {// 获得开始时间long start = System.currentTimeMillis();// 输出的excel的路径String filePath = "c:\\test.xls";// 创建Excel工作薄WritableWorkbook wwb;// 新建立一个jxl文件,即在C盘下生成test.xlsOutputStream os = new FileOutputStream(filePath);wwb=Workbook.createWorkbook(os); // 添加第一个工作表并设置第一个Sheet的名字WritableSheet sheet = wwb.createSheet("产品清单", 0);Label label;for(int i=0;i<title.length;i++){// Label(x,y,z)其中x代表单元格的第x+1列，第y+1行, 单元格的内容是y// 在Label对象的子对象中指明单元格的位置和内容label = new Label(i,0,title);// 将定义好的单元格添加到工作表中sheet.addCell(label);}// 下面是填充数据/** 保存数字到单元格，需要使用jxl.write.Number * 必须使用其完整路径，否则会出现错误 * */// 填充产品编号jxl.write.Number number = new jxl.write.Number(0,1,20071001);sheet.addCell(number);// 填充产品名称label = new Label(1,1,"盐水鸭");sheet.addCell(label);/* * 定义对于显示金额的公共格式 * jxl会自动实现四舍五入 * 例如 22.456会被格式化为22.46,22.454会被格式化为22.45 * */jxl.write.NumberFormat nf = new jxl.write.NumberFormat("#.##");jxl.write.WritableCellFormat wcf = new jxl.write.WritableCellFormat(nf);// 填充产品价格jxl.write.Number nb = new jxl.write.Number(2,1,22.45,wcf);sheet.addCell(nb);// 填充产品数量jxl.write.Number numb = new jxl.write.Number(3,1,200);sheet.addCell(numb);/* * 定义显示日期的公共格式 * 如:yyyy-MM-dd hh:mm * */SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");String newdate = sdf.format(new Date());// 填充出产日期label = new Label(4,1,newdate);sheet.addCell(label);// 填充产地label = new Label(5,1,"南京");sheet.addCell(label);/* * 显示布尔值 * */jxl.write.Boolean bool = new jxl.write.Boolean(6,1,true);sheet.addCell(bool);/* * 合并单元格 * 通过writablesheet.mergeCells(int x,int y,int m,int n);来实现的 * 表示将从第x+1列，y+1行到m+1列，n+1行合并 ** */sheet.mergeCells(0,3,2,3);label = new Label(0,3,"合并了三个单元格");sheet.addCell(label);/* ** 定义公共字体格式 * 通过获取一个字体的样式来作为模板 * 首先通过web.getSheet(0)获得第一个sheet * 然后取得第一个sheet的第二列，第一行也就是"产品名称"的字体* */CellFormat cf = wwb.getSheet(0).getCell(1, 0).getCellFormat();WritableCellFormat wc = new WritableCellFormat();// 设置居中wc.setAlignment(Alignment.CENTRE);// 设置边框线wc.setBorder(Border.ALL, BorderLineStyle.THIN);// 设置单元格的背景颜色wc.setBackground(jxl.format.Colour.RED);label = new Label(1,5,"字体",wc);sheet.addCell(label);// 设置字体jxl.write.WritableFont wfont = new jxl.write.WritableFont(WritableFont.createFont("隶书"),20);WritableCellFormat font = new WritableCellFormat(wfont);label = new Label(2,6,"隶书",font);sheet.addCell(label);// 写入数据wwb.write();// 关闭文件wwb.close();long end = System.currentTimeMillis();System.out.println("操作共用的时间:"+(end-start)+"毫秒");} catch (Exception e) {e.printStackTrace();}}//生成流，以便进行下载（用时可将流返回）static void writeXlsStream(){try{ByteArrayOutputStream baos = new ByteArrayOutputStream();WritableWorkbook wbook = Workbook.createWorkbook(baos);wbook.write();wbook.close();byte[] bs = baos.toByteArray();baos.close();//inputstream 可以用于返回InputStream inputstream = new ByteArrayInputStream(bs);String fileName = toUtf8String("数据统计.xls");} catch (WriteException e){// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e){// TODO Auto-generated catch blocke.printStackTrace();}}//读本地文件static void readXls(){try{String filePath = "c:\\excel2.xls";InputStream is = newFileInputStream(filePath);Workbook wb = Workbook.getWorkbook(is); //得到工作薄Sheet sheet = wb.getSheet(0); //得到工作薄中的第一个工作表Cell cell = sheet.getCell(0,0);//得到工作表的第一个单元格,即A1String content=cell.getContents();//getContents()将Cell中的字符转为字符串System.out.println("A1内容=="+content);System.out.println(sheet.getCell(0, 1).getContents());System.out.println("总行数=="+sheet.getRows());System.out.println("总列数=="+sheet.getColumns());wb.close();//关闭工作薄is.close();//关闭输入流} catch (Exception e){// TODO Auto-generated catch blocke.printStackTrace();}}public static void main(String[] args){//writeXls();readXls();}}
需要的jxl.ar
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