JAVA实现数据库数据导入/导出到Excel（POI）

准备工作：

1.导入POI包：POI下载地址http://mirrors.tuna.tsinghua.edu.cn/apache/poi/release/src/（重要）

如下

2.导入Java界面美化包BeautyEye下载地址http://code.google.com/p/beautyeye/downloads/detail?name=beautyeye_lnf_v3.5_all_in_one.zip&can=2&q=（可选）如果不想加入界面美化代码可以把void setlookandfeel()这个方法及其调用去掉

 

jar在下载解压在文件夹dist目录下

beautyeye_lnf.jar包是个开源的美化Java界面的包，推荐学习做出的Java界面比较美观

BeautyEye L&F简明开发者指南. http://code.google.com/p/beautyeye/wiki/Introduction

 

3.本案例使用Hiberate下配置Oracle导入导出数据

导出的数据库表为users表

SQL> desc system.users; 
Name               Type                           Nullable              Default Comments 
-----               ------------------                   --------                    ------- -------- 
ID                  NUMBER(10)                                   
NAME             VARCHAR2(50 CHAR)                            
PWORD           VARCHAR2(32 CHAR)                            
EMAIL            VARCHAR2(100 CHAR)        Y

注意Column顺序不能乱

1.ExcelOutandIn.java

ExcelOutandIn主要利用Jtable显示数据库里面的数据

显示效果如图所示

package com.wym.tools;



import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.Font;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.util.Comparator;

import java.util.List;

import java.util.Vector;

import javax.swing.DefaultRowSorter;

import javax.swing.JButton;

import javax.swing.JFileChooser;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.RowSorter;

import javax.swing.event.TableModelEvent;

import javax.swing.event.TableModelListener;

import javax.swing.filechooser.FileFilter;

import javax.swing.table.DefaultTableModel;

import javax.swing.table.TableModel;

import javax.swing.table.TableRowSorter;

import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFRow;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import org.hibernate.NonUniqueObjectException;

import org.jb2011.lnf.beautyeye.BeautyEyeLNFHelper;

import cn.wym.hibernate.Users;

import cn.wym.hibernate.UsersDAO;



public class ExcelOutandIn extends JFrame implements ActionListener {



    JButton button1 = new JButton("ToExcel");

    JButton button2 = new JButton("FromExcel");



    Container ct = null;

    DefaultTableModel defaultModel = null;



    JButton add = new JButton("添加");

    JButton delete = new JButton("删除");

    JButton save = new JButton("保存");

    JButton reset = new JButton("刷新");



    JPanel jp1 = new JPanel(), jp;

    JPanel jp2 = new JPanel();

    JScrollPane jsp = null;

    UsersDAO userdao = new UsersDAO();

    Users users = null;

    @SuppressWarnings("unchecked")

    List list = null;



    public List getList() {

        return list;

    }



    public void setList(List list) {

        this.list = list;

    }



    protected JTable table = null;

    protected String oldvalue = "";

    protected String newvalue = "";



    /**

     * @param args

     */

    public static void main(String[] args) {

        // TODO Auto-generated method stub



        ExcelOutandIn tm = new ExcelOutandIn();

        // tm.paintuser();

    }



    public void paintuser() {

        list = this.getUsers();

        for (int i = 0; i < list.size(); i++) {

            users = (Users) list.get(i);

            System.out.println(" ID:" + users.getId() + "");

        }

    }



    @SuppressWarnings("unchecked")

    public List getUsers() {

        list = userdao.findAll();



        return list;



    }



    private File getSelectedOpenFile(final String type) {

        String name = getName();



        JFileChooser pathChooser = new JFileChooser();

        pathChooser.setFileFilter(new FileFilter() {



            @Override

            public boolean accept(File f) {

                if (f.isDirectory()) {

                    return true;

                } else {

                    if (f.getName().toLowerCase().endsWith(type)) {

                        return true;

                    } else {

                        return false;

                    }

                }

            }



            @Override

            public String getDescription() {

                return "文件格式（" + type + "）";

            }

        });

        pathChooser.setSelectedFile(new File(name + type));

        int showSaveDialog = pathChooser.showOpenDialog(this);

        if (showSaveDialog == JFileChooser.APPROVE_OPTION) {

            return pathChooser.getSelectedFile();

        } else {

            return null;

        }

    }



    private File getSelectedFile(final String type) {

        String name = getName();



        JFileChooser pathChooser = new JFileChooser();

        pathChooser.setFileFilter(new FileFilter() {



            @Override

            public boolean accept(File f) {

                if (f.isDirectory()) {

                    return true;

                } else {

                    if (f.getName().toLowerCase().endsWith(type)) {

                        return true;

                    } else {

                        return false;

                    }

                }

            }



            @Override

            public String getDescription() {

                return "文件格式（" + type + "）";

            }

        });

        pathChooser.setSelectedFile(new File(name + type));

        int showSaveDialog = pathChooser.showSaveDialog(this);

        if (showSaveDialog == JFileChooser.APPROVE_OPTION) {

            return pathChooser.getSelectedFile();

        } else {

            return null;

        }

    }



    void setlookandfeel() {

        try {



            BeautyEyeLNFHelper.frameBorderStyle = BeautyEyeLNFHelper.FrameBorderStyle.osLookAndFeelDecorated;

            org.jb2011.lnf.beautyeye.BeautyEyeLNFHelper.launchBeautyEyeLNF();

        } catch (final Exception e) {

            System.out.println("error");



        }

    }



    void init() {

        setlookandfeel();



        buildTable();

        jsp = new JScrollPane(table);



        ct.add(jsp);

        button1.setActionCommand("ToExcel");

        button1.addActionListener(this);



        button2.setActionCommand("FromExcel");

        button2.addActionListener(this);



        delete.setActionCommand("delete");

        delete.addActionListener(this);



        reset.setActionCommand("reset");

        reset.addActionListener(this);



        save.setActionCommand("save");

        save.addActionListener(this);



        add.setActionCommand("add");

        add.addActionListener(this);

    }



    public void ToExcel(String path) {



        list = getUsers();



        HSSFWorkbook wb = new HSSFWorkbook();

        HSSFSheet sheet = wb.createSheet("Users");



        String[] n = { "编号", "姓名", "密码", "邮箱" };



        Object[][] value = new Object[list.size() + 1][4];

        for (int m = 0; m < n.length; m++) {

            value[0][m] = n[m];

        }

        for (int i = 0; i < list.size(); i++) {

            users = (Users) list.get(i);



            value[i + 1][0] = users.getId();

            value[i + 1][1] = users.getUsername();

            value[i + 1][2] = users.getPassword();

            value[i + 1][3] = users.getUEmail();



        }

        ExcelUtil.writeArrayToExcel(wb, sheet, list.size() + 1, 4, value);



        ExcelUtil.writeWorkbook(wb, path);



    }



    /**

     * 从Excel导入数据到数据库

     * @param filename

     */

    public void FromExcel(String filename) {



        String result = "success";

        /** Excel文件的存放位置。注意是正斜线 */

        // String fileToBeRead = "F:\\" + fileFileName;

        try {

            // 创建对Excel工作簿文件的引用

            HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(

                    filename));

            // 创建对工作表的引用。

            // HSSFSheet sheet = workbook.getSheet("Sheet1");

            HSSFSheet sheet = workbook.getSheetAt(0);



            int j = 1;//从第2行开始堵数据

            // 第在excel中读取一条数据就将其插入到数据库中

            while (j < sheet.getPhysicalNumberOfRows()) {

                HSSFRow row = sheet.getRow(j);

                Users user = new Users();



                for (int i = 0; i <= 3; i++) {

                    HSSFCell cell = row.getCell((short) i);



                    if (i == 0) {

                        user.setId((int) cell.getNumericCellValue());

                    } else if (i == 1)

                        user.setUsername(cell.getStringCellValue());

                    else if (i == 2)

                        user.setPassword(cell.getStringCellValue());



                    else if (i == 3)

                        user.setUEmail(cell.getStringCellValue());

                }



                System.out.println(user.getId() + " " + user.getUsername()

                        + " " + user.getPassword() + " " + user.getUEmail());



                j++;



                userdao.save(user);



            }



        } catch (FileNotFoundException e2) {

            // TODO Auto-generated catch block

            System.out.println("notfound");

            e2.printStackTrace();

        } catch (IOException e3) {

            // TODO Auto-generated catch block

            System.out.println(e3.toString());



            e3.printStackTrace();

        } catch (NonUniqueObjectException e4) {

            System.out.println(e4.toString());



        }



    }



    public JTable CreateTable(String[] columns, Object rows[][]) {

        JTable table;

        TableModel model = new DefaultTableModel(rows, columns);



        table = new JTable(model);

        RowSorter sorter = new TableRowSorter(model);

        table.setRowSorter(sorter);



        return table;



    }



    @SuppressWarnings("unchecked")

    public void fillTable(List<Users> users) {

        DefaultTableModel tableModel = (DefaultTableModel) table.getModel();

        tableModel.setRowCount(0);// 清除原有行



        // 填充数据

        for (Users Users : users) {

            Vector vector = new Vector<Users>();



            vector.add(Users.getId());

            vector.add(Users.getUsername());

            vector.add(Users.getPassword());

            vector.add(Users.getUEmail());



            // 添加数据到表格

            tableModel.addRow(vector);

        }



        // 更新表格

        table.invalidate();

    }



    @SuppressWarnings("unchecked")

    public void tableAddRow(int id, String name, String pwd, String email) {

        DefaultTableModel tableModel = (DefaultTableModel) table.getModel();

        tableModel.getColumnCount();



        // 填充数据



        Vector vector = new Vector<Users>();



        vector.add(id);

        vector.add(name);

        vector.add(pwd);

        vector.add(email);



        // 添加数据到表格

        tableModel.addRow(vector);



        // 更新表格

        table.invalidate();

    }



    @SuppressWarnings("unchecked")

    public void buildTable() {

        String[] n = { "编号", "姓名", "密码", "邮箱" };

        list = getUsers();

        Object[][] value = new Object[list.size()][4];



        for (int i = 0; i < list.size(); i++) {

            users = (Users) list.get(i);



            value[i][0] = users.getId();

            value[i][1] = users.getUsername();

            value[i][2] = users.getPassword();

            value[i][3] = users.getUEmail();



        }

        defaultModel = new DefaultTableModel(value, n) {

            boolean[] editables = { false, true, true, true };



            public boolean isCellEditable(int row, int col) {

                return editables[col];

            }

        };

        defaultModel.isCellEditable(1, 1);

        table = new JTable(defaultModel);

        RowSorter sorter = new TableRowSorter(defaultModel);

        table.setRowSorter(sorter);



        // 设置排序

        ((DefaultRowSorter) sorter).setComparator(0, new Comparator<Object>() {

            public int compare(Object arg0, Object arg1) {

                try {

                    int a = Integer.parseInt(arg0.toString());

                    int b = Integer.parseInt(arg1.toString());

                    return a - b;

                } catch (NumberFormatException e) {

                    return 0;

                }

            }

        });

        defaultModel.addTableModelListener(new TableModelListener() {



            public void tableChanged(TableModelEvent e) {

                if (e.getType() == TableModelEvent.UPDATE) {

                    newvalue = table.getValueAt(e.getLastRow(), e.getColumn())

                            .toString();

                    System.out.println(newvalue);

                    int rowss = table.getEditingRow();

                    if (newvalue.equals(oldvalue)) {

                        System.out.println(rowss);

                        System.out.println(table.getValueAt(rowss, 0) + ""

                                + table.getValueAt(rowss, 1) + ""

                                + table.getValueAt(rowss, 2) + ""

                                + table.getValueAt(rowss, 3));

                        JOptionPane.showMessageDialog(null, "数据没有修改");



                    } else {



                        int dialog = JOptionPane.showConfirmDialog(null,

                                "是否确认修改", "温馨提示", JOptionPane.YES_NO_OPTION);

                        if (dialog == JOptionPane.YES_OPTION) {



                            System.out.println(" 修改了");

                            String s1 = (String) table.getValueAt(rowss, 0)

                                    .toString();

                            int id = Integer.parseInt(s1);

                            users = new Users();

                            users.setId(id);

                            users.setUEmail(table.getValueAt(rowss, 3)

                                    .toString());

                            users.setUsername(table.getValueAt(rowss, 1)

                                    .toString());

                            users.setPassword(table.getValueAt(rowss, 2)

                                    .toString());



                            try {

                                userdao.saveOrUpdate2(users);



                            } catch (NonUniqueObjectException noe) {

                                new UsersDAO().saveOrUpdate2(users);

                            }



                        } else if (dialog == JOptionPane.NO_OPTION) {

                            table.setValueAt(oldvalue, rowss, table

                                    .getSelectedColumn());

                            // System.out.println("没有确认修改");

                        }



                    }



                }



            }



        });



        table.addMouseListener(new MouseAdapter() {



            public void mouseClicked(MouseEvent e) {



                // 记录进入编辑状态前单元格得数据



                try {

                    oldvalue = table.getValueAt(table.getSelectedRow(),

                            table.getSelectedColumn()).toString();

                    System.out.println(oldvalue);

                } catch (Exception ex) {

                    // TODO: handle exception

                }



            }



        });

    }



    public ExcelOutandIn() {



        // TODO Auto-generated constructor stub



        new BorderLayout();



        Font font = new Font("宋体", 4, 14);



        add.setFont(font);

        save.setFont(font);

        delete.setFont(font);

        reset.setFont(font);

        jp1.add(button1);

        jp1.add(button2);



        jp2.add(add);

        jp2.add(delete);

        // jp2.add(save);

        jp2.add(reset);



        ct = this.getContentPane();



        ct.add(jp1, BorderLayout.NORTH);

        ct.add(jp2, BorderLayout.SOUTH);



        init();

        this.setTitle("ToOrFromExcel");

        this.setVisible(true);

        this.setSize(600, 400);

        this.setLocation(400, 250);

        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);



    }



    public void actionPerformed(ActionEvent e) {

        // TODO Auto-generated method stub



        if (e.getActionCommand().equals("add")) {



            AddUsers adduser = new AddUsers();

            jp = new JPanel();

            jp.add(adduser);

            ct.add(jp, BorderLayout.WEST);



            /*

             * users= adduser.getU(); if(users==null){

             * JOptionPane.showMessageDialog(null, "Null");

             * 

             * }else{

             * 

             * }

             */

            // tableAddRow(id, name, pwd, email);

        }

        // defaultModel.addRow(v);

        if (e.getActionCommand().equals("delete")) {

            int srow = 0;



            try {

                srow = table.getSelectedRow();

            } catch (Exception ee) {



            }

            int rowcount = defaultModel.getRowCount() - 1;// getRowCount返回行数，rowcount<0代表已经没有任何行了。



            if (srow > 0) {

                Object id = defaultModel.getValueAt(srow, 0);

                String ID = id.toString();

                users = userdao.findById(Integer.parseInt(ID));



                defaultModel.getRowCount();



                System.out.println(ID);

                defaultModel.removeRow(srow);



                // userdao.delete(users);

                defaultModel.setRowCount(rowcount);

            }

        }



        if (e.getActionCommand().equals("save")) {

            System.out.println("save");

            ct.remove(jp);

        }



        if (e.getActionCommand().equals("reset")) {



            System.out.println("reset");

            fillTable(userdao.findAll());



        }



        if (e.getActionCommand().equalsIgnoreCase("toexcel")) {



            File selectedFile = getSelectedFile(".xls");

            if (selectedFile != null) {

                String path = selectedFile.getPath();



                // System.out.println(path);

                ToExcel(path);

            }



        } else if (e.getActionCommand().equalsIgnoreCase("FromExcel")) {

            File selectedFile = getSelectedOpenFile(".xls");

            if (selectedFile != null) {

                // String name=selectedFile.getName();

                String path = selectedFile.getPath();

                FromExcel(path);

                fillTable(userdao.findAll());



            }



        }



    }



}

 

 

 

2.导入导出到Excel工具类ExcelUtil.java

package com.wym.tools;



import java.io.File;



/**

 * 描述：Excel写操作帮助类

 *

 * 

 * */

public class ExcelUtil {

     

    

    

    /**

     * 功能：创建HSSFSheet工作簿

     * @param     wb    HSSFWorkbook

     * @param     sheetName    String

     * @return    HSSFSheet

     */

    public static HSSFSheet createSheet(HSSFWorkbook wb,String sheetName){

        HSSFSheet sheet=wb.createSheet(sheetName);

        sheet.setDefaultColumnWidth(12);

        sheet.setGridsPrinted(false);

        sheet.setDisplayGridlines(false);

        return sheet;

    }

 

    

    

    

    /**

     * 功能：创建HSSFRow

     * @param     sheet    HSSFSheet

     * @param     rowNum    int

     * @param     height    int

     * @return    HSSFRow

     */

    public static HSSFRow createRow(HSSFSheet sheet,int rowNum,int height){

        HSSFRow row=sheet.createRow(rowNum);

        row.setHeight((short)height);

        return row;

    }

    

    

    

    public static HSSFCell createCell0(HSSFRow row,int cellNum){

        HSSFCell cell=row.createCell(cellNum);

         return cell;

    }



    

    /**

     * 功能：创建CELL

     * @param     row        HSSFRow    

     * @param     cellNum    int

     * @param     style    HSSFStyle

     * @return    HSSFCell

     */

    public static HSSFCell createCell(HSSFRow row,int cellNum,CellStyle style){

        HSSFCell cell=row.createCell(cellNum);

        cell.setCellStyle(style);

        return cell;

    }

    

    

    

    /**

     * 功能：创建CellStyle样式

     * @param     wb                HSSFWorkbook    

     * @param     backgroundColor    背景色    

     * @param     foregroundColor    前置色

     * @param    font            字体

     * @return    CellStyle

     */

    public static CellStyle createCellStyle(HSSFWorkbook wb,short backgroundColor,short foregroundColor,short halign,Font font){

        CellStyle cs=wb.createCellStyle();

        cs.setAlignment(halign);

        cs.setVerticalAlignment(CellStyle.VERTICAL_CENTER);

        cs.setFillBackgroundColor(backgroundColor);

        cs.setFillForegroundColor(foregroundColor);

        cs.setFillPattern(CellStyle.SOLID_FOREGROUND);

        cs.setFont(font);

        return cs;

    }

    

    

    /**

     * 功能：创建带边框的CellStyle样式

     * @param     wb                HSSFWorkbook    

     * @param     backgroundColor    背景色    

     * @param     foregroundColor    前置色

     * @param    font            字体

     * @return    CellStyle

     */

    public static CellStyle createBorderCellStyle(HSSFWorkbook wb,short backgroundColor,short foregroundColor,short halign,Font font){

        CellStyle cs=wb.createCellStyle();

        cs.setAlignment(halign);

        cs.setVerticalAlignment(CellStyle.VERTICAL_CENTER);

        cs.setFillBackgroundColor(backgroundColor);

        cs.setFillForegroundColor(foregroundColor);

        cs.setFillPattern(CellStyle.SOLID_FOREGROUND);

        cs.setFont(font);

        cs.setBorderLeft(CellStyle.BORDER_DASHED);

        cs.setBorderRight(CellStyle.BORDER_DASHED);

        cs.setBorderTop(CellStyle.BORDER_DASHED);

        cs.setBorderBottom(CellStyle.BORDER_DASHED);  

        return cs;

    }

    

    

    

    



    /**

     * 功能：多行多列导入到Excel并且设置标题栏格式

     */

    public static void writeArrayToExcel(HSSFSheet sheet,int rows,int cells,Object [][]value){

 

          Row row[]=new HSSFRow[rows];

         Cell cell[]=new HSSFCell[cells];

      

         for(int i=0;i<row.length;i++){

             row[i]=sheet.createRow(i);



             

             for(int j=0;j<cell.length;j++){

                 cell[j]=row[i].createCell(j);

                 cell[j].setCellValue(convertString(value[i][j]));

                

             }

 

         }

    }

    

    

    

    /**

     * 功能：多行多列导入到Excel并且设置标题栏格式

     */

    public static void writeArrayToExcel(HSSFWorkbook wb,HSSFSheet sheet,int rows,int cells,Object [][]value){

 

          Row row[]=new HSSFRow[rows];

         Cell cell[]=new HSSFCell[cells];

     

         

          HSSFCellStyle ztStyle =  (HSSFCellStyle)wb.createCellStyle();



         Font ztFont = wb.createFont();  

         ztFont.setBoldweight(Font.BOLDWEIGHT_BOLD);

         //ztFont.setItalic(true);                     // 设置字体为斜体字  

        // ztFont.setColor(Font.COLOR_RED);            // 将字体设置为“红色”  

         ztFont.setFontHeightInPoints((short)10);    // 将字体大小设置为18px  

         ztFont.setFontName("华文行楷");             // 将“华文行楷”字体应用到当前单元格上  

        // ztFont.setUnderline(Font.U_DOUBLE);

         ztStyle.setFont(ztFont);

         

         for(int i=0;i<row.length;i++){

             row[i]=sheet.createRow(i);



             

             for(int j=0;j<cell.length;j++){

                 cell[j]=row[i].createCell(j);

                 cell[j].setCellValue(convertString(value[i][j]));

               

                 if(i==0)

                   cell[j].setCellStyle(ztStyle);

                  

             }

 

         }

    }

    

    

    

    /**

     * 功能：合并单元格

     * @param     sheet        HSSFSheet

     * @param     firstRow    int

     * @param     lastRow        int

     * @param     firstColumn    int

     * @param     lastColumn    int

     * @return    int            合并区域号码

     */

    public static int mergeCell(HSSFSheet sheet,int firstRow,int lastRow,int firstColumn,int lastColumn){

        return sheet.addMergedRegion(new CellRangeAddress(firstRow,lastRow,firstColumn,lastColumn));    

    }

    

    

    

    /**

     * 功能：创建字体

     * @param     wb            HSSFWorkbook    

     * @param     boldweight    short

     * @param     color        short

     * @return    Font    

     */

    public static Font createFont(HSSFWorkbook wb,short boldweight,short color,short size){

        Font font=wb.createFont();

        font.setBoldweight(boldweight);

        font.setColor(color);

        font.setFontHeightInPoints(size);

        return font;

    }

    

    

    /**

     * 设置合并单元格的边框样式

     * @param    sheet    HSSFSheet    

     * @param     ca        CellRangAddress

     * @param     style    CellStyle

     */

    public static void setRegionStyle(HSSFSheet sheet, CellRangeAddress ca,CellStyle style) {  

        for (int i = ca.getFirstRow(); i <= ca.getLastRow(); i++) {  

            HSSFRow row = HSSFCellUtil.getRow(i, sheet);  

            for (int j = ca.getFirstColumn(); j <= ca.getLastColumn(); j++) {  

                HSSFCell cell = HSSFCellUtil.getCell(row, j);  

                cell.setCellStyle(style);  

            }  

        }  

    }  

    

    /**

     * 功能：将HSSFWorkbook写入Excel文件

     * @param     wb        HSSFWorkbook

     * @param     absPath    写入文件的相对路径

     * @param     wbName    文件名

     */

    public static void writeWorkbook(HSSFWorkbook wb,String fileName){

        FileOutputStream fos=null;

        File f=new File(fileName);

        try {

            fos=new FileOutputStream(f);

            wb.write(fos);

            int dialog = JOptionPane.showConfirmDialog(null,

                    f.getName()+"导出成功！是否打开？",

                    "温馨提示", JOptionPane.YES_NO_OPTION);

            if (dialog == JOptionPane.YES_OPTION) {

    

                Runtime.getRuntime().exec("cmd /c start \"\" \"" + fileName + "\"");

            }    

        

                

        } catch (FileNotFoundException e) {

            JOptionPane.showMessageDialog(null, "导入数据前请关闭工作表");



         } catch ( Exception e) {

            JOptionPane.showMessageDialog(null, "没有进行筛选");



         } finally{

            try {

                if(fos!=null){

                    fos.close();

                }

            } catch (IOException e) {

             }

        }

    }

    

    

    

    public static String convertString(Object value) {

        if (value == null) {

            return "";

        } else {

            return value.toString();

        }

    }







 

}

 

导入的Excel格式

原文：http://www.cnblogs.com/J-wym/p/3260722.html