jxl读写excel, poi读写excel,word, 读取Excel数据到MySQL

这篇blog是介绍:

1. java中的poi技术读取Excel数据，然后保存到MySQL数据中。

2. jxl读写excel

你也可以在 ： java的poi技术读取和导入Excel 了解到写入Excel的方法信息

项目结构：

Excel中的测试数据：

数据库结构：

对应的SQL：

1 CREATE TABLE `student_info` (
2   `id` int(11) NOT NULL AUTO_INCREMENT,
3   `no` varchar(20) DEFAULT NULL,
4   `name` varchar(20) DEFAULT NULL,
5   `age` varchar(10) DEFAULT NULL,
6   `score` float DEFAULT '0',
7   PRIMARY KEY (`id`)
8 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;

插入数据成功：

如果重复数据，则丢掉：

=============================================

源码部分：

=============================================

/ExcelTest/src/com/b510/client/Client.java

 1 /**
 2  * 
 3  */
 4 package com.b510.client;
 5 
 6 import java.io.IOException;
 7 import java.sql.SQLException;
 8 
 9 import com.b510.excel.SaveData2DB;
10 
11 /**
12  * @author Hongten
13  * @created 2014-5-18
14  */
15 public class Client {
16 
17     public static void main(String[] args) throws IOException, SQLException {
18         SaveData2DB saveData2DB = new SaveData2DB();
19         saveData2DB.save();
20         System.out.println("end");
21     }
22 }

/ExcelTest/src/com/b510/common/Common.java

 1 /**
 2  * 
 3  */
 4 package com.b510.common;
 5 
 6 /**
 7  * @author Hongten
 8  * @created 2014-5-18
 9  */
10 public class Common {
11 
12     // connect the database
13     public static final String DRIVER = "com.mysql.jdbc.Driver";
14     public static final String DB_NAME = "test";
15     public static final String USERNAME = "root";
16     public static final String PASSWORD = "root";
17     public static final String IP = "192.168.1.103";
18     public static final String PORT = "3306";
19     public static final String URL = "jdbc:mysql://" + IP + ":" + PORT + "/" + DB_NAME;
20     
21     // common
22     public static final String EXCEL_PATH = "lib/student_info.xls";
23     
24     // sql
25     public static final String INSERT_STUDENT_SQL = "insert into student_info(no, name, age, score) values(?, ?, ?, ?)";
26     public static final String UPDATE_STUDENT_SQL = "update student_info set no = ?, name = ?, age= ?, score = ? where id = ? ";
27     public static final String SELECT_STUDENT_ALL_SQL = "select id,no,name,age,score from student_info";
28     public static final String SELECT_STUDENT_SQL = "select * from student_info where name like ";
29 }

/ExcelTest/src/com/b510/excel/ReadExcel.java

 1 /**
 2  * 
 3  */
 4 package com.b510.excel;
 5 
 6 import java.io.FileInputStream;
 7 import java.io.IOException;
 8 import java.io.InputStream;
 9 import java.util.ArrayList;
10 import java.util.List;
11 
12 import org.apache.poi.hssf.usermodel.HSSFCell;
13 import org.apache.poi.hssf.usermodel.HSSFRow;
14 import org.apache.poi.hssf.usermodel.HSSFSheet;
15 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
16 
17 import com.b510.common.Common;
18 import com.b510.excel.vo.Student;
19 
20 /**
21  * @author Hongten
22  * @created 2014-5-18
23  */
24 public class ReadExcel {
25 
26     public List<Student> readXls() throws IOException {
27         InputStream is = new FileInputStream(Common.EXCEL_PATH);
28         HSSFWorkbook hssfWorkbook = new HSSFWorkbook(is);
29         Student student = null;
30         List<Student> list = new ArrayList<Student>();
31         // 循环工作表Sheet
32         for (int numSheet = 0; numSheet < hssfWorkbook.getNumberOfSheets(); numSheet++) {
33             HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);
34             if (hssfSheet == null) {
35                 continue;
36             }
37             // 循环行Row
38             for (int rowNum = 1; rowNum <= hssfSheet.getLastRowNum(); rowNum++) {
39                 HSSFRow hssfRow = hssfSheet.getRow(rowNum);
40                 if (hssfRow != null) {
41                     student = new Student();
42                     HSSFCell no = hssfRow.getCell(0);
43                     HSSFCell name = hssfRow.getCell(1);
44                     HSSFCell age = hssfRow.getCell(2);
45                     HSSFCell score = hssfRow.getCell(3);
46                     student.setNo(getValue(no));
47                     student.setName(getValue(name));
48                     student.setAge(getValue(age));
49                     student.setScore(Float.valueOf(getValue(score)));
50                     list.add(student);
51                 }
52             }
53         }
54         return list;
55     }
56     
57      @SuppressWarnings("static-access")
58     private String getValue(HSSFCell hssfCell) {
59             if (hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) {
60                 // 返回布尔类型的值
61                 return String.valueOf(hssfCell.getBooleanCellValue());
62             } else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) {
63                 // 返回数值类型的值
64                 return String.valueOf(hssfCell.getNumericCellValue());
65             } else {
66                 // 返回字符串类型的值
67                 return String.valueOf(hssfCell.getStringCellValue());
68             }
69         }
70 }

/ExcelTest/src/com/b510/excel/SaveData2DB.java

 1 /**
 2  * 
 3  */
 4 package com.b510.excel;
 5 
 6 import java.io.IOException;
 7 import java.sql.SQLException;
 8 import java.util.List;
 9 
10 import com.b510.common.Common;
11 import com.b510.excel.util.DbUtil;
12 import com.b510.excel.vo.Student;
13 
14 /**
15  * @author Hongten
16  * @created 2014-5-18
17  */
18 public class SaveData2DB {
19 
20     @SuppressWarnings({ "rawtypes" })
21     public void save() throws IOException, SQLException {
22         ReadExcel xlsMain = new ReadExcel();
23         Student student = null;
24         List<Student> list = xlsMain.readXls();
25 
26         for (int i = 0; i < list.size(); i++) {
27             student = list.get(i);
28             List l = DbUtil.selectOne(Common.SELECT_STUDENT_SQL + "'%" + student.getName() + "%'", student);
29             if (!l.contains(1)) {
30                 DbUtil.insert(Common.INSERT_STUDENT_SQL, student);
31             } else {
32                 System.out.println("The Record was Exist : No. = " + student.getNo() + " , Name = " + student.getName() + ", Age = " + student.getAge() + ", and has been throw away!");
33             }
34         }
35     }
36 }

/ExcelTest/src/com/b510/excel/util/DbUtil.java

  1 /**
  2  * 
  3  */
  4 package com.b510.excel.util;
  5 
  6 import java.sql.Connection;
  7 import java.sql.DriverManager;
  8 import java.sql.PreparedStatement;
  9 import java.sql.ResultSet;
 10 import java.sql.SQLException;
 11 import java.util.ArrayList;
 12 import java.util.List;
 13 
 14 import com.b510.common.Common;
 15 import com.b510.excel.vo.Student;
 16 
 17 /**
 18  * @author Hongten
 19  * @created 2014-5-18
 20  */
 21 public class DbUtil {
 22 
 23     /**
 24      * @param sql
 25      */
 26     public static void insert(String sql, Student student) throws SQLException {
 27         Connection conn = null;
 28         PreparedStatement ps = null;
 29         try {
 30             Class.forName(Common.DRIVER);
 31             conn = DriverManager.getConnection(Common.URL, Common.USERNAME, Common.PASSWORD);
 32             ps = conn.prepareStatement(sql);
 33             ps.setString(1, student.getNo());
 34             ps.setString(2, student.getName());
 35             ps.setString(3, student.getAge());
 36             ps.setString(4, String.valueOf(student.getScore()));
 37             boolean flag = ps.execute();
 38             if(!flag){
 39                 System.out.println("Save data : No. = " + student.getNo() + " , Name = " + student.getName() + ", Age = " + student.getAge() + " succeed!");
 40             }
 41         } catch (Exception e) {
 42             e.printStackTrace();
 43         } finally {
 44             if (ps != null) {
 45                 ps.close();
 46             }
 47             if (conn != null) {
 48                 conn.close();
 49             }
 50         }
 51     }
 52 
 53     @SuppressWarnings({ "unchecked", "rawtypes" })
 54     public static List selectOne(String sql, Student student) throws SQLException {
 55         Connection conn = null;
 56         PreparedStatement ps = null;
 57         ResultSet rs = null;
 58         List list = new ArrayList();
 59         try {
 60             Class.forName(Common.DRIVER);
 61             conn = DriverManager.getConnection(Common.URL, Common.USERNAME, Common.PASSWORD);
 62             ps = conn.prepareStatement(sql);
 63             rs = ps.executeQuery();
 64             while(rs.next()){
 65                 if(rs.getString("no").equals(student.getNo()) || rs.getString("name").equals(student.getName())|| rs.getString("age").equals(student.getAge())){
 66                     list.add(1);
 67                 }else{
 68                     list.add(0);
 69                 }
 70             }
 71         } catch (Exception e) {
 72             e.printStackTrace();
 73         } finally {
 74             if (rs != null) {
 75                 rs.close();
 76             }
 77             if (ps != null) {
 78                 ps.close();
 79             }
 80             if (conn != null) {
 81                 conn.close();
 82             }
 83         }
 84         return list;
 85     }
 86     
 87     
 88     public static ResultSet selectAll(String sql) throws SQLException {
 89         Connection conn = null;
 90         PreparedStatement ps = null;
 91         ResultSet rs = null;
 92         try {
 93             Class.forName(Common.DRIVER);
 94             conn = DriverManager.getConnection(Common.URL, Common.USERNAME, Common.PASSWORD);
 95             ps = conn.prepareStatement(sql);
 96             rs = ps.executeQuery();
 97         } catch (Exception e) {
 98             e.printStackTrace();
 99         } finally {
100             if (rs != null) {
101                 rs.close();
102             }
103             if (ps != null) {
104                 ps.close();
105             }
106             if (conn != null) {
107                 conn.close();
108             }
109         }
110         return rs;
111     }
112 
113 }

/ExcelTest/src/com/b510/excel/vo/Student.java

 1 /**
 2  * 
 3  */
 4 package com.b510.excel.vo;
 5 
 6 /**
 7  * Student
 8  * 
 9  * @author Hongten
10  * @created 2014-5-18
11  */
12 public class Student {
13     /**
14      * id
15      */
16     private Integer id;
17     /**
18      * 学号
19      */
20     private String no;
21     /**
22      * 姓名
23      */
24     private String name;
25     /**
26      * 学院
27      */
28     private String age;
29     /**
30      * 成绩
31      */
32     private float score;
33 
34     public Integer getId() {
35         return id;
36     }
37 
38     public void setId(Integer id) {
39         this.id = id;
40     }
41 
42     public String getNo() {
43         return no;
44     }
45 
46     public void setNo(String no) {
47         this.no = no;
48     }
49 
50     public String getName() {
51         return name;
52     }
53 
54     public void setName(String name) {
55         this.name = name;
56     }
57 
58     public String getAge() {
59         return age;
60     }
61 
62     public void setAge(String age) {
63         this.age = age;
64     }
65 
66     public float getScore() {
67         return score;
68     }
69 
70     public void setScore(float score) {
71         this.score = score;
72     }
73 
74 }

源码下载：http://files.cnblogs.com/hongten/ExcelTest.zip

poi读写excel

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>3.14</version>
</dependency>

一.　创建Excel 文档

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;
import java.io.FileOutputStream;
public class XLS {
    public static String outputFile = "./test.xls";
    public static void main(String argv[]) {
        try {
            // 创建新的Excel 工作簿
            HSSFWorkbook workbook = new HSSFWorkbook();
            // 在Excel工作簿中建一工作表，其名为缺省值
            // 如要新建一名为"效益指标"的工作表，其语句为：
            // HSSFSheet sheet = workbook.createSheet("效益指标");
            HSSFSheet sheet = workbook.createSheet();
            
            //创建第一行
            HSSFRow row = sheet.createRow((short)0);
            //创建第一列
            HSSFCell cell = row.createCell((short)0);
            
            //定义单元格为字符串类型
            cell.setCellType(HSSFCell.CELL_TYPE_STRING);
            //在单元格中输入一些内容
            cell.setCellValue("增加值");
            
            // 新建一输出文件流
            FileOutputStream fOut = new FileOutputStream(outputFile);
            
            // 把相应的Excel 工作簿存盘
            workbook.write(fOut);
            fOut.flush();
            fOut.close();
            System.out.println("文件已经生成...");
        } catch (Exception e) {
            System.out.println("已运行 xlCreate() : " + e);
        }
    }
}

二.　读取Excel文档中的数据

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;

import java.io.FileInputStream;

public class XLS {
    /** windows目录用反斜线 */
    public static String fileToBeRead = "./test.xls";//"D:\test1.xls";

    public static void main(String argv[]) {
        try {
            // 创建对Excel工作簿文件的引用
            HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(fileToBeRead));
            
            // 创建对工作表的引用。此处按名引用（让我们假定那张表有着缺省名"Sheet1"）
            HSSFSheet sheet = workbook.getSheet("Sheet0");
            // 也可用getSheetAt(int index)按索引引用，在Excel文档中，第一张工作表的缺省索引是0，其语句为：HSSFSheet sheet = workbook.getSheetAt(0);
            
            // 读取左上端单元
            HSSFRow row = sheet.getRow(0);
            HSSFCell cell = row.getCell((short) 0);

            // 输出单元内容，cell.getStringCellValue()就是取所在单元的值
            System.out.println("左上端单元是： " + cell.getStringCellValue());
        } catch (Exception e) {
            System.out.println("已运行xlRead() : " + e);
        }
    }
}

设置单元格格式

在这里，我们将只介绍一些和格式设置有关的语句，我们假定workbook就是对一个工作簿的引用。在Java中，第一步要做的就是创建和设置字体和单元格的格式，然后再应用这些格式：

1、创建字体，设置其为红色、粗体：

1 2 3

HSSFFont font = workbook.createFont(); font.setColor(HSSFFont.COLOR_RED); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

2、创建格式

1 2	HSSFCellStyle cellStyle= workbook.createCellStyle(); cellStyle.setFont(font);

3、应用格式

1 2 3 4

HSSFCell cell = row.createCell((short) 0); cell.setCellStyle(cellStyle); cell.setCellType(HSSFCell.CELL_TYPE_STRING); cell.setCellValue("标题 ");

三.　处理WORD文档

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

import java.io. * ; import org.apache.poi.hwpf.extractor.WordExtractor; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFCell; public class TestPoi {     public TestPoi() {}     public static void main(String args[])throws Exception{         FileInputStream in = new FileInputStream("D:\a.doc");         WordExtractor extractor = new WordExtractor();         String str = extractor.extractText(in);         //System.out.println("the result length is"+str.length());         System.out.println(str);     } }

poi读写word: 

http://mvnrepository.com/artifact/org.apache.poi/poi

Apache POI - Java API To Access Microsoft Format Files

http://wuhaidong.iteye.com/blog/1728406

实例一：读excel:

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import jxl.Cell;
import jxl.CellType;
import jxl.Sheet;
import jxl.Workbook;
import jxl.write.Label;
public class xls
{
    public static void main(String[] args)
    {
        jxl.Workbook readwb = null;
        try
        {
            // 构建Workbook对象, 只读Workbook对象,直接从本地文件创建Workbook
            InputStream instream = new FileInputStream("./活动日历.xls");
            readwb = Workbook.getWorkbook(instream);
            // 获取第一张Sheet表
            Sheet readsheet = readwb.getSheet(0);
            int rsColumns = readsheet.getColumns();//总列数
            int rsRows = readsheet.getRows();//总行数
            for (int i = 0; i < rsRows; i++){
                for (int j = 0; j < rsColumns; j++){
                    Cell cell = readsheet.getCell(j, i);
                    System.out.print(cell.getContents() + " ");
                }
                System.out.println();
            }
            //创建新的可写入的Excel工作薄
            jxl.write.WritableWorkbook wwb = Workbook.createWorkbook(new File("./活动日历1.xls"), readwb);
            // 读取第一张工作表
            jxl.write.WritableSheet ws = wwb.getSheet(0);
            // 获得第一个单元格对象
            jxl.write.WritableCell wc = ws.getWritableCell(0, 0);
            // 判断单元格的类型, 做出相应的转化
            if (wc.getType() == CellType.LABEL)
            {
                Label l = (Label) wc;
                l.setString("新姓名");
            }
            wwb.write();
            wwb.close();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            readwb.close();
        }
    }
}

实例二：写excel:

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
import jxl.write.biff.RowsExceededException;

public class xls {
    public void createExcel(OutputStream os) throws WriteException, IOException {
        // 创建工作薄
        WritableWorkbook workbook = Workbook.createWorkbook(os);
        // 创建新的一页
        WritableSheet sheet = workbook.createSheet("First Sheet", 0);
        // 创建要显示的内容,创建一个单元格，第一个参数为列坐标，第二个参数为行坐标，第三个参数为内容
        Label xuexiao = new Label(0, 0, "学校");
        sheet.addCell(xuexiao);
        Label zhuanye = new Label(1, 0, "专业");
        sheet.addCell(zhuanye);
        Label jingzhengli = new Label(2, 0, "专业竞争力");
        sheet.addCell(jingzhengli);

        Label qinghua = new Label(0, 1, "清华大学");
        sheet.addCell(qinghua);
        Label jisuanji = new Label(1, 1, "计算机专业");
        sheet.addCell(jisuanji);
        Label gao = new Label(2, 1, "高");
        sheet.addCell(gao);

        Label beida = new Label(0, 2, "北京大学");
        sheet.addCell(beida);
        Label falv = new Label(1, 2, "法律专业");
        sheet.addCell(falv);
        Label zhong = new Label(2, 2, "中");
        sheet.addCell(zhong);

        Label ligong = new Label(0, 3, "北京理工大学");
        sheet.addCell(ligong);
        Label hangkong = new Label(1, 3, "航空专业");
        sheet.addCell(hangkong);
        Label di = new Label(2, 3, "低");
        sheet.addCell(di);

        // 把创建的内容写入到输出流中，并关闭输出流
        workbook.write();
        workbook.close();
        os.close();
    }

    public static void main(String[] args) throws IOException, RowsExceededException, WriteException {
        try {
            // 打开文件
            WritableWorkbook book = Workbook.createWorkbook(new File("./测试.xls"));
            // 生成名为“第一页”的工作表，参数0表示这是第一页
            WritableSheet sheet = book.createSheet("第一页", 0);
            
            // 在Label对象的构造子中指名单元格位置是第一列第一行(0,0)的内容
            Label label = new Label(0, 0, "测试");
            // 将定义好的单元格添加到工作表中
            sheet.addCell(label);
            
            jxl.write.Number number = new jxl.write.Number(1, 0, 1234567);
            sheet.addCell(number);
            
            jxl.write.Label s = new jxl.write.Label(1, 2, "水电站");
            sheet.addCell(s);
            
            // 写入数据并关闭文件
            book.write();
            book.close(); // 最好在finally中关闭，此处仅作为示例不太规范
        } catch (Exception e) {
            System.out.println(e);
        }
    }

}

实例二：3个功能-----从excel文件F:红楼人物.xls读取数据；生成新的excel文件F:红楼人物2.xls；修改原excel一个单元并输出为F:红楼人物3.xls。

import jxl.*;
import jxl.format.UnderlineStyle;
import jxl.write.*;
import jxl.write.Number;
import jxl.write.Boolean;
import jxl.Cell;

import java.io.*;

public class xls {
    public xls() {
    }

    /*** 读取Excel */
    public static void readExcel(String filePath) {
        try {
            InputStream is = new FileInputStream(filePath);
            Workbook rwb = Workbook.getWorkbook(is);
            // 这里有两种方法获取sheet表:名字和下标（从0开始）
            // Sheet st = rwb.getSheet("original");
            Sheet st = rwb.getSheet(0);
            /**
             * //获得第一行第一列单元的值 Cell c00 = st.getCell(0,0); //通用的获取cell值的方式,返回字符串
             * String strc00 = c00.getContents(); //获得cell具体类型值的方式
             * if(c00.getType() == CellType.LABEL) { LabelCell labelc00 =
             * (LabelCell)c00; strc00 = labelc00.getString(); } //输出
             * System.out.println(strc00);
             */
            // Sheet的下标是从0开始
            // 获取第一张Sheet表
            Sheet rst = rwb.getSheet(0);
            // 获取Sheet表中所包含的总列数
            int rsColumns = rst.getColumns();
            // 获取Sheet表中所包含的总行数
            int rsRows = rst.getRows();
            // 获取指定单元格的对象引用
            for (int i = 0; i < rsRows; i++) {
                for (int j = 0; j < rsColumns; j++) {
                    Cell cell = rst.getCell(j, i);
                    System.out.print(cell.getContents() + " ");
                }
                System.out.println();
            }
            // 关闭
            rwb.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /** 输出Excel */
    public static void writeExcel(OutputStream os) {
        try {
            /**
             * 只能通过API提供的 工厂方法来创建Workbook，而不能使用WritableWorkbook的构造函数，
             * 因为类WritableWorkbook的构造函数为 protected类型：方法一：直接从目标文件中读取
             * WritableWorkbook wwb = Workbook.createWorkbook(new
             * File(targetfile));方法 二：如下实例所示 将WritableWorkbook直接写入到输出流
             */
            WritableWorkbook wwb = Workbook.createWorkbook(os);
            // 创建Excel工作表 指定名称和位置
            WritableSheet ws = wwb.createSheet("Test Sheet 1", 0);
            /************** 往工作表中添加数据 *****************/
            // 1.添加Label对象
            Label label = new Label(0, 0, "测试");
            ws.addCell(label);
            // 添加带有字型Formatting对象
            WritableFont wf = new WritableFont(WritableFont.TIMES, 18, WritableFont.BOLD, true);
            WritableCellFormat wcf = new WritableCellFormat(wf);
            Label labelcf = new Label(1, 0, "this is a label test", wcf);
            ws.addCell(labelcf);
            // 添加带有字体颜色的Formatting对象
            WritableFont wfc = new WritableFont(WritableFont.ARIAL, 10, WritableFont.NO_BOLD, false,
                    UnderlineStyle.NO_UNDERLINE, jxl.format.Colour.DARK_YELLOW);
            WritableCellFormat wcfFC = new WritableCellFormat(wfc);
            Label labelCF = new Label(1, 0, "Ok", wcfFC);
            ws.addCell(labelCF);

            // 2.添加Number对象
            Number labelN = new Number(0, 1, 3.1415926);
            ws.addCell(labelN);
            // 添加带有formatting的Number对象
            NumberFormat nf = new NumberFormat("#.##");
            WritableCellFormat wcfN = new WritableCellFormat(nf);
            Number labelNF = new jxl.write.Number(1, 1, 3.1415926, wcfN);
            ws.addCell(labelNF);

            // 3.添加Boolean对象
            Boolean labelB = new jxl.write.Boolean(0, 2, true);
            ws.addCell(labelB);
            Boolean labelB1 = new jxl.write.Boolean(1, 2, false);
            ws.addCell(labelB1);
            // 4.添加DateTime对象
            jxl.write.DateTime labelDT = new jxl.write.DateTime(0, 3, new java.util.Date());
            ws.addCell(labelDT);

            // 5.添加带有formatting的DateFormat对象
            DateFormat df = new DateFormat("dd MM yyyy hh:mm:ss");
            WritableCellFormat wcfDF = new WritableCellFormat(df);
            DateTime labelDTF = new DateTime(1, 3, new java.util.Date(), wcfDF);
            ws.addCell(labelDTF);
            // 6.添加图片对象,jxl只支持png格式图片
            File image = new File("f:\1.png");
            WritableImage wimage = new WritableImage(0, 4, 6, 17, image);
            ws.addImage(wimage);
            // 7.写入工作表
            wwb.write();
            wwb.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 将file1拷贝后,进行修改并创建输出对象file2 单元格原有的格式化修饰不能去掉，但仍可将新的单元格修饰加上去，
     * 以使单元格的内容以不同的形式表现
     */
    public static void modifyExcel(File file1, File file2) {
        try {
            Workbook rwb = Workbook.getWorkbook(file1);
            WritableWorkbook wwb = Workbook.createWorkbook(file2, rwb);// copy
            WritableFont wfc = new WritableFont(WritableFont.ARIAL, 10, WritableFont.NO_BOLD, false,
                    UnderlineStyle.NO_UNDERLINE, jxl.format.Colour.BLUE);
            WritableCellFormat wcfFC = new WritableCellFormat(wfc);
            WritableSheet ws = wwb.getSheet(0);
            WritableCell wc = ws.getWritableCell(0, 0);
            // 判断单元格的类型,做出相应的转换
            if (wc.getType() == CellType.LABEL) {
                Label labelCF = new Label(0, 0, "人物（新）", wcfFC);
                ws.addCell(labelCF);
                // Label label = (Label)wc;
                // label.setString("被修改");
            }
            wwb.write();
            wwb.close();
            rwb.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // 测试
    public static void main(String args[]) {
        try {
            // 读EXCEL
            xls.readExcel("F:/红楼人物.xls");
            // 输出EXCEL
            File filewrite = new File("F:/红楼人物2.xls");
            filewrite.createNewFile();
            OutputStream os = new FileOutputStream(filewrite);
            xls.writeExcel(os);
            // 修改EXCEL
            xls.modifyExcel(new File("F:/红楼人物.xls"), new File("F:/红楼人物3.xls"));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

            <dependency>
                <groupId>net.sourceforge.jexcelapi</groupId>
                <artifactId>jxl</artifactId>
                <version>2.6.12</version>
            </dependency>