JExcel的使用demo

下面方法中有Excel格式的生成，以及下载写法。

import jxl.Workbook;
import jxl.format.Border;

import jxl.format.BorderLineStyle;

import jxl.format.Colour;
import jxl.format.UnderlineStyle;

import jxl.write.Label;
import jxl.write.WritableCellFormat;

import jxl.write.WritableFont;
import jxl.write.WritableSheet;

import jxl.write.WritableWorkbook;
import jxl.write.WriteException;

import jxl.write.biff.RowsExceededException;

private String downloadFileName = "归档文件目录.xls";//下载文件名称



    public String getDownloadFileName() {

        try {

            this.downloadFileName = new String(downloadFileName.getBytes("GBK"),"ISO8859-1");

        } catch (UnsupportedEncodingException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        return this.downloadFileName;

    }



    public void setDownloadFileName(String downloadFileName) {

        this.downloadFileName = downloadFileName;

    }

    

    /**

     * filestream 下载文件流

     * 

     * getFilestream 得到下载文件流方法

     * setFilestream 设置下载文件流方法

     */

    private BufferedInputStream filestream;//文件流



    public BufferedInputStream getFilestream() {

        try {

            String uploadPath = WAFConfigure.getProperty("UploadFile_Path2");

            filestream = new BufferedInputStream(new FileInputStream(uploadPath + "/" + downloadFileName));

        } catch (FileNotFoundException e) {

            e.printStackTrace();

        }

        return this.filestream;

    }



    public void setFilestream(BufferedInputStream filestream) {

        this.filestream = filestream;

    }

    

    /**

     * 文件下载的action

     * 

     * uploadPath 文件的存储路径

     * downloadFileName 获取的文件名称

     * filestream 返回的文件流

     */

    public String downLoad() {

        creatExcel();

        try {

            // 设置返回的url值

            String url = "SUCCESS";

            // 从Property文件中获取图片的存储路径

            String uploadPath = WAFConfigure.getProperty("UploadFile_Path2");

            File folder = new File(uploadPath + "/" + downloadFileName);

            // 判断文件是否存在

            if (folder.exists()) {

                // 文件存在时创建下载文件的输出流

                filestream = new BufferedInputStream(new FileInputStream(

                        uploadPath + "/" + downloadFileName));

                byte[] buffer = new byte[filestream.available()];

                filestream.read(buffer);

                if (filestream == null) {

                    url = ERROR;

                } else {

                    url = SUCCESS;

                }

            } else {

                String noticeInfo = "文件已删除";

                url = "nosession";

            }

            return url;

        } catch (Exception ex) {

            ex.printStackTrace();

            return ERROR;

        } 

    }

    

    

    //生成导出的Excel文件

    public void creatExcel() {

        String path = WAFConfigure.getProperty("UploadFile_Path2");

        try {

            WritableWorkbook book = Workbook.createWorkbook(new File(path+"/"+this.downloadFileName));

            WritableSheet sheet = book.createSheet("第一页", 0);

            /*********表头样式初始化***********/

            //表头样式1

            WritableCellFormat tcellFormat1 = new WritableCellFormat();

            tcellFormat1.setAlignment(jxl.format.Alignment.CENTRE);//设置水平居中               

            tcellFormat1.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);//设置垂直居中             

            tcellFormat1.setWrap(true);//设置自动换行             

            tcellFormat1.setFont(new WritableFont(WritableFont.createFont("楷体_GB2312"),26,WritableFont.NO_BOLD,false,

                    UnderlineStyle.NO_UNDERLINE,Colour.BLACK)); //设置显示的字体样式，字体，字号，是否粗体，字体颜色 

            //表头样式2

            WritableCellFormat tcellFormat2 = new WritableCellFormat();

            tcellFormat2.setAlignment(jxl.format.Alignment.LEFT);            

            tcellFormat2.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);

            tcellFormat2.setWrap(true);       

            tcellFormat2.setFont(new WritableFont(WritableFont.createFont("楷体_GB2312"),18,WritableFont.NO_BOLD,false,

                    UnderlineStyle.NO_UNDERLINE,Colour.BLACK));

            //表头样式3

            WritableCellFormat tcellFormat3 = new WritableCellFormat();

            tcellFormat3.setAlignment(jxl.format.Alignment.CENTRE);          

            tcellFormat3.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);      

            tcellFormat3.setWrap(true);         

            tcellFormat3.setFont(new WritableFont(WritableFont.createFont("楷体_GB2312"),14,WritableFont.NO_BOLD,false,

                    UnderlineStyle.NO_UNDERLINE,Colour.BLACK)); 

            tcellFormat3.setBorder(Border.ALL, BorderLineStyle.THIN, Colour.BLACK);

            //件号样式

            WritableCellFormat bcellFormat0 = new WritableCellFormat();

            bcellFormat0.setAlignment(jxl.format.Alignment.CENTRE);          

            bcellFormat0.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);      

            bcellFormat0.setWrap(true);         

            bcellFormat0.setFont(new WritableFont(WritableFont.createFont("宋体"),12,WritableFont.NO_BOLD,false,

                    UnderlineStyle.NO_UNDERLINE,Colour.BLACK)); 

            bcellFormat0.setBorder(Border.ALL, BorderLineStyle.THIN, Colour.BLACK);

            //责任者样式

            WritableCellFormat bcellFormat1 = new WritableCellFormat();

            bcellFormat1.setAlignment(jxl.format.Alignment.CENTRE);          

            bcellFormat1.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);      

            bcellFormat1.setWrap(true);         

            bcellFormat1.setFont(new WritableFont(WritableFont.createFont("宋体"),12,WritableFont.NO_BOLD,false,

                    UnderlineStyle.NO_UNDERLINE,Colour.BLACK)); 

            bcellFormat1.setBorder(Border.ALL, BorderLineStyle.THIN, Colour.BLACK);

            //文号

            WritableCellFormat bcellFormat2 = new WritableCellFormat();

            bcellFormat2.setAlignment(jxl.format.Alignment.CENTRE);          

            bcellFormat2.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);      

            bcellFormat2.setWrap(true);         

            bcellFormat2.setFont(new WritableFont(WritableFont.createFont("宋体"),10,WritableFont.NO_BOLD,false,

                    UnderlineStyle.NO_UNDERLINE,Colour.BLACK)); 

            bcellFormat2.setBorder(Border.ALL, BorderLineStyle.THIN, Colour.BLACK);

            //题名

            WritableCellFormat bcellFormat3 = new WritableCellFormat();       

            bcellFormat3.setVerticalAlignment(jxl.format.VerticalAlignment.BOTTOM);      

            bcellFormat3.setWrap(true);         

            bcellFormat3.setFont(new WritableFont(WritableFont.createFont("宋体"),12,WritableFont.NO_BOLD,false,

                    UnderlineStyle.NO_UNDERLINE,Colour.BLACK)); 

            bcellFormat3.setBorder(Border.ALL, BorderLineStyle.THIN, Colour.BLACK);

            //日期,页数

            WritableCellFormat bcellFormat4 = new WritableCellFormat();

            bcellFormat4.setAlignment(jxl.format.Alignment.CENTRE);          

            bcellFormat4.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);      

            bcellFormat4.setWrap(true);         

            bcellFormat4.setFont(new WritableFont(WritableFont.createFont("宋体"),13,WritableFont.NO_BOLD,false,

                    UnderlineStyle.NO_UNDERLINE,Colour.BLACK)); 

            bcellFormat4.setBorder(Border.ALL, BorderLineStyle.THIN, Colour.BLACK);

            //备注

            WritableCellFormat bcellFormat5 = new WritableCellFormat();

            bcellFormat5.setAlignment(jxl.format.Alignment.CENTRE);          

            bcellFormat5.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);      

            bcellFormat5.setWrap(true);         

            bcellFormat5.setFont(new WritableFont(WritableFont.createFont("宋体"),12,WritableFont.NO_BOLD,false,

                    UnderlineStyle.NO_UNDERLINE,Colour.BLACK)); 

            bcellFormat5.setBorder(Border.ALL, BorderLineStyle.THIN, Colour.BLACK);

            /*********表头部分***********/

            //表头1

            sheet.mergeCells(0, 0, 6, 0);//合并单元格

            sheet.setRowView(0, 1000);//设置行高

            sheet.addCell(new Label(0, 0, "归 档 文 件 目 录", tcellFormat1));//要插入的单元格内容,第一个是列，第二个是行，第三个是值，第四个是样式

            

            //表头2

            sheet.mergeCells(0, 1, 3, 1);

            sheet.mergeCells(4, 1, 6, 1);

            sheet.setRowView(1, 650);

            sheet.addCell(new Label(0, 1, "机构（问题）：" + this.problem, tcellFormat2));

            sheet.addCell(new Label(4, 1, "期限：" + this.qixian, tcellFormat2));

            

            //表头3

            sheet.setRowView(2, 650);

            sheet.setColumnView(1, 10);//列宽设置

            sheet.setColumnView(4, 7);//列宽设置

            sheet.setColumnView(5, 7);//

            sheet.setColumnView(3, 39);

            

            sheet.addCell(new Label(0, 2, "件号", tcellFormat3));

            sheet.addCell(new Label(1, 2, "责任者", tcellFormat3));

            sheet.addCell(new Label(2, 2, "文号", tcellFormat3));

            sheet.addCell(new Label(3, 2, "题        名", tcellFormat3));

            sheet.addCell(new Label(4, 2, "日期", tcellFormat3));

            sheet.addCell(new Label(5, 2, "页数", tcellFormat3));

            sheet.addCell(new Label(6, 2, "备注", tcellFormat3));

            

            /*********表格主体部分***********/

            /*测试用

            for(int i = 3; i < 30; i++) {

                sheet.setRowView(i, 650);//设置行高                    

                sheet.addCell(new Label(0, i, "30", bcellFormat0));

                sheet.addCell(new Label(1, i, "北京市爱莲舞蹈学校", bcellFormat1));

                sheet.addCell(new Label(2, i, "京兴政办通〔2008〕05号", bcellFormat2));

                sheet.addCell(new Label(3, i, "北京市大兴区人民政府办公室关于2", bcellFormat3));

                sheet.addCell(new Label(4, i, "20081028", bcellFormat4));

                sheet.addCell(new Label(5, i, "8", bcellFormat4));

                sheet.addCell(new Label(6, i, "发文（京兴政函[2012]31号）", bcellFormat5));

            }*/

            

            ArrayList arrayList = new ArrayList();

            if(listSearch() != null && !listSearch().equals("")) {

                arrayList = (ArrayList)listSearch();

            }

            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");

            int length = listSearch().size()+3;

            //取得实体的游标值

            int getNumber = 0;

            for(int i = 3; i < length; i++) {

                Archives archives = (Archives)arrayList.get(getNumber);

                String tm = archives.getTiming();

                int tmlength = tm.length();

                //一行只能有16个长度

                int bs = tmlength/16; //计算出16的倍数

                int ys = 1%16;        //计算出余数

                //如果有余数，最后一行截取的起始下标

                int end = 0;

                //题名小于16的长度

                if(bs == 0) {

                    sheet.setRowView(i, 650);//设置行高

                    sheet.addCell(new Label(0, i, archives.getSbjh(), bcellFormat0));

                    sheet.addCell(new Label(1, i, archives.getZeren(), bcellFormat1));

                    sheet.addCell(new Label(2, i, archives.getWenhao(), bcellFormat2));

                    sheet.addCell(new Label(3, i, archives.getTiming(), bcellFormat3));

                    String time = dateFormat.format(archives.getTime());

                    sheet.addCell(new Label(4, i, time, bcellFormat4));

                    sheet.addCell(new Label(5, i, archives.getPage(), bcellFormat4));

                    sheet.addCell(new Label(6, i, archives.getBeizhu(), bcellFormat5));

                //题名大于16的长度

                }else {

                    for(int j = 1; j <=bs; j++) {

                        sheet.setRowView(i, 650);//设置行高

                        sheet.addCell(new Label(0, i, archives.getSbjh(), bcellFormat0));

                        sheet.addCell(new Label(1, i, archives.getZeren(), bcellFormat1));

                        sheet.addCell(new Label(2, i, archives.getWenhao(), bcellFormat2));

                        //循环取得截取的字符串，长度为16

                        sheet.addCell(new Label(3, i, tm.substring((j-1)*16, j*16), bcellFormat3));

                        sheet.addCell(new Label(4, i, null, bcellFormat4));

                        sheet.addCell(new Label(5, i, null, bcellFormat4));

                        sheet.addCell(new Label(6, i, archives.getBeizhu(), bcellFormat5));    

                        if(j != 1) {

                            sheet.setRowView(i, 650);//设置行高

                            sheet.addCell(new Label(0, i, null, bcellFormat0));

                            sheet.addCell(new Label(1, i, null, bcellFormat1));

                            sheet.addCell(new Label(2, i, null, bcellFormat2));

                            sheet.addCell(new Label(3, i, tm.substring((j-1)*16, j*16), bcellFormat3));

                            //没有余数时控制时间、页数在最后一行显示

                            String page = null;

                            String showtime = null;

                            if(j == bs && ys == 0) {

                                page = archives.getPage();

                                showtime = dateFormat.format(archives.getTime());

                            }

                            sheet.addCell(new Label(4, i, showtime, bcellFormat4));

                            sheet.addCell(new Label(5, i, page, bcellFormat4));

                            sheet.addCell(new Label(6, i, null, bcellFormat5));

                        }

                        end = j*16;

                        length++;

                        i++;

                    }

                    //有余数时

                    if(ys != 0){

                        sheet.setRowView(i, 650);//设置行高

                        sheet.addCell(new Label(0, i, null, bcellFormat0));

                        sheet.addCell(new Label(1, i, null, bcellFormat1));

                        sheet.addCell(new Label(2, i, null, bcellFormat2));

                        sheet.addCell(new Label(3, i, tm.substring(end), bcellFormat3));

                        String time = dateFormat.format(archives.getTime());

                        sheet.addCell(new Label(4, i, time, bcellFormat4));

                        sheet.addCell(new Label(5, i, archives.getPage(), bcellFormat4));

                        sheet.addCell(new Label(6, i, null, bcellFormat5));

                    }

                }

                getNumber++;

            }                                                             

            //开始执行写入操作  

            book.write(); 

            //关闭流  

            book.close();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (RowsExceededException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (WriteException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }