Java实现将txt文件转成xls文件

最近项目用到txt文件和xls文件的转换，这里记录一下具体的思路。

下面利用java代码实现txt转xls，这里要使用到jxl.jar包，这个包是通过java来操作Excel表格的工具类库。
该jar包支持字体、数字、日期操作，能够修饰单元格属性，还能够支持图像和图表，基本上已经满足我们的日常操作，最主要的是这套API是纯Java实现的，在Windows和Linux操作系统下，它都可以正确的处理Excel文件。

具体实现代码如下：

package test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;

import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;

public class txtToxls {
        //txt文本路径
        static String txtFilePath = "D:\\Super_PLU.txt";
        //xls路径
        static String xlsFilePath = "D:\\Super_PLU.xls";
        //每一列的列名
        static String c1Name, c2Name, c3Name, c4Name, c5Name, c6Name, c7Name, c8Name;

        public static void main(String args[]) {
            // 将txt文件进行解析，保存为List
            ArrayList<TxtFile> xlsList = getTxtInfos();
            // 将List以xls保存
            TransToExcel(xlsList);
        }

        private static ArrayList<TxtFile> getTxtInfos() {
            ArrayList<TxtFile> txtFileList = new ArrayList<TxtFile>();
            BufferedReader bufferedReader = null;
            try {
                // 这里注意指定文件的编码格式
                bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(txtFilePath), "gbk"));
                String element = null;
                int index = 0;
                while ((element = bufferedReader.readLine()) != null) {
                    //如果是此行为空，则跳过
                    if(element.trim().equals("")){
                        continue;
                    }
                    //第一行作为每列名称
                    String[] value = element.trim().split(",");
                    if (index == 0) {
                        c1Name = value[0];
                        c2Name = value[1];
                        c3Name = value[2];
                        c4Name = value[3];
                        c5Name = value[4];
                        c6Name = value[5];
                        c7Name = value[6];
                        c8Name = value[7];
                        index = 1;
                        continue;
                    }
                    //从第二行开始读取每行内容，以TxtFile形式存储
                    TxtFile txtFile = new TxtFile(Integer.parseInt(value[0]), Integer.parseInt(value[1]), value[2], value[3], value[4], Integer.parseInt(value[5]), Integer.parseInt(value[6]), Integer.parseInt(value[7]));
                    txtFileList.add(txtFile);
                }
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                if (bufferedReader != null) {
                    try {
                        bufferedReader.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
            return txtFileList;
        }

    private static void TransToExcel(ArrayList<TxtFile> txtFileList) {
        WritableWorkbook book  = null;
        try {
            // 创建一个xls文件
            book = Workbook.createWorkbook(new File(xlsFilePath));
            // 生成名为'商品信息'的工作表，这里参数0表示第一页
            WritableSheet sheet = book.createSheet("商品信息", 0);
            // 在Label对象为每一列添加列名，即每一列的第一行            
            Label label1 = new Label(0, 0, c1Name);
            Label label2 = new Label(1, 0, c2Name);
            Label label3 = new Label(2, 0, c3Name);
            Label label4 = new Label(3, 0, c4Name);
            Label label5 = new Label(4, 0, c5Name);
            Label label6 = new Label(5, 0, c6Name);
            Label label7 = new Label(6, 0, c7Name);
            Label label8 = new Label(7, 0, c8Name); 
            // 将定义好列名添加到工作表中
            sheet.addCell(label1);
            sheet.addCell(label2);
            sheet.addCell(label3);
            sheet.addCell(label4);
            sheet.addCell(label5);
            sheet.addCell(label6);
            sheet.addCell(label7);
            sheet.addCell(label8);

            /*
             * 遍历传进来的List，把每一行的内容再顺序加入到工作表中，
             * 在生成数字单元格时， 必须使用Number的完整包路径 
             */
            for (int i = 0; i < txtFileList.size(); i++) {
                TxtFile p = txtFileList.get(i); 
                jxl.write.Number item_code = new jxl.write.Number(0, (i+1), p.item_code);
                jxl.write.Number plu = new jxl.write.Number(1, (i+1), p.plu);
                Label commodity = new Label(2, (i+1), p.commodity);
                Label ingredient= new Label(3, (i+1), p.ingredient);
                Label special = new Label(4, (i+1), p.special);
                jxl.write.Number use_by_date = new jxl.write.Number(5, (i+1), p.use_by_date);
                jxl.write.Number use_by_date_print = new jxl.write.Number(6, (i+1), p.use_by_date_print);
                jxl.write.Number packge_by_date_print = new jxl.write.Number(7, (i+1), p.packge_by_date_print);

                sheet.addCell(item_code);
                sheet.addCell(plu);
                sheet.addCell(commodity);
                sheet.addCell(ingredient);
                sheet.addCell(special);
                sheet.addCell(use_by_date);
                sheet.addCell(use_by_date_print);
                sheet.addCell(packge_by_date_print);
            }
            book.write();
            book.close();
        } catch (Exception e) {
            e.printStackTrace();;
        }
    }
}
    // txt文件model类
    class TxtFile {
        int item_code;
        int plu;
        String commodity;
        String ingredient;
        String special;
        int use_by_date;
        int use_by_date_print;
        int packge_by_date_print;

        public TxtFile(int item_code, int plu,  String commodity, String ingredient, String special,int use_by_date, int use_by_date_print, int packge_by_date_print) {
            this.item_code = item_code;
            this.plu = plu;
            this.commodity = commodity;
            this.ingredient = ingredient;
            this.special = special;
            this.use_by_date = use_by_date;
            this.use_by_date_print = use_by_date_print;
            this.packge_by_date_print = packge_by_date_print;
        }
    }