Java POI Excel 导入导出

这个东西很容易懂，不是特别难，难就难在一些复杂的计算和Excel格式的调整上。

近期写了一个小列子，放上来便于以后使用。

POI.jar下载地址：http://mirror.bit.edu.cn/apache/poi/release/bin/poi-bin-3.17-20170915.zip

Entity 实体类

package com.test2;

import java.util.Date;

public class User {

    private int id;

    private String username;

    private String password;

    private String sex;

    private int age;

    private Date birth;

    public int getId() {

        return id;

    }

    public String getUsername() {

        return username;

    }

    public String getPassword() {

        return password;

    }

    public String getSex() {

        return sex;

    }

    public int getAge() {

        return age;

    }

    public Date getBirth() {

        return birth;

    }

    public void setId(int id) {

        this.id = id;

    }

    public void setUsername(String username) {

        this.username = username;

    }

    public void setPassword(String password) {

        this.password = password;

    }

    public void setSex(String sex) {

        this.sex = sex;

    }

    public void setAge(int age) {

        this.age = age;

    }

    public void setBirth(Date birth) {

        this.birth = birth;

    }

    @Override

    public String toString() {

        return "User [id=" + id + ", username=" + username + ", password=" + password + ", sex=" + sex + ", age=" + age

                + ", birth=" + birth + "]";

    }

    public User() {};

    public User(int id, String username, String password, String sex, int age, Date birth) {

        super();

        this.id = id;

        this.username = username;

        this.password = password;

        this.sex = sex;

        this.age = age;

        this.birth = birth;

    }

}

Excel 导出：

package com.test2;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Date;

import java.util.List;

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

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

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

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

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

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

import org.apache.poi.hssf.util.HSSFColor;

import org.apache.poi.ss.usermodel.BorderStyle;

import org.apache.poi.ss.usermodel.HorizontalAlignment;

import org.apache.poi.ss.usermodel.VerticalAlignment;

import org.apache.poi.ss.util.CellRangeAddress;

public class ExportExcel {

    public static void main(String[] args) {

        try {

            // 创建一个工作簿

            HSSFWorkbook workbook = new HSSFWorkbook();

            CellRangeAddress cellRangeAddress = new CellRangeAddress(0, 0, 0, 5);

            HSSFCellStyle headStyle = getStyle(workbook,(short) 15);

            HSSFCellStyle colStyle = getStyle(workbook,(short) 12);

            //新建一个excel页签

            HSSFSheet createSheet = workbook.createSheet("用户信息列表");

            // 将合并表格的对象添加页签中

            createSheet.addMergedRegion(cellRangeAddress);

            // 设置单元格的默认宽度

            createSheet.setDefaultColumnWidth(25);

            // 创建一行

            HSSFRow row0 = createSheet.createRow(0);

            HSSFCell cell0 = row0.createCell(0);

            // 添加标题样式

            cell0.setCellStyle(headStyle);

            // 添加标题

            cell0.setCellValue("用户信息列表");

            //设置列的标题

            String [] titles = {"id","用户名","密码","年龄","性别","生日"};

            HSSFRow row1 = createSheet.createRow(1);

            //  循环往excel中添加列标题

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

                HSSFCell cell1 = row1.createCell(i);

                cell1.setCellStyle(colStyle);

                cell1.setCellValue(titles[i]);

            }

            List<User> userList = new ArrayList<User>();

            userList.add(new User(1,"zhangsan1","123","男",21,new Date()));

            userList.add(new User(2,"zhangsan2","456","男",21,new Date()));

            userList.add(new User(3,"zhangsan3","789","女",21,new Date()));

            userList.add(new User(4,"zhangsan4","000","男",21,new Date()));

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

                //创建第三行

                HSSFRow row2 = createSheet.createRow(i + 2);

                HSSFCell cell_0 = row2.createCell(0);

                cell_0.setCellValue(userList.get(i).getId());

                HSSFCell cell_1 = row2.createCell(1);

                cell_1.setCellValue(userList.get(i).getUsername());

                HSSFCell cell_2 = row2.createCell(2);

                cell_2.setCellValue(userList.get(i).getPassword());

                HSSFCell cell_3 = row2.createCell(3);

                cell_3.setCellValue(userList.get(i).getAge());

                HSSFCell cell_4 = row2.createCell(4);

                cell_4.setCellValue(userList.get(i).getSex());

                HSSFCell cell_5 = row2.createCell(5);

                cell_5.setCellValue(new SimpleDateFormat("yyyy-MM-dd").format(userList.get(i).getBirth()));

            }

            OutputStream os = new FileOutputStream("E:/test.xls");

            workbook.write(os);

            os.close();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

    public static HSSFCellStyle getStyle(HSSFWorkbook workbook,short fontSize) {

        // 创建样式对象

        HSSFCellStyle createCellStyle = workbook.createCellStyle();

        //水平居中

        createCellStyle.setAlignment(HorizontalAlignment.CENTER);

        //垂直居中

        createCellStyle.setVerticalAlignment(VerticalAlignment.CENTER);

        // 设置边框

        createCellStyle.setBorderBottom(BorderStyle.THIN);

        createCellStyle.setBorderLeft(BorderStyle.THIN);

        createCellStyle.setBorderRight(BorderStyle.THIN);

        createCellStyle.setBorderTop(BorderStyle.THIN);

        //  创建一个字体对象

        HSSFFont createFont = workbook.createFont();

        // 设置字体的大小

        createFont.setFontHeightInPoints(fontSize);

        // 设置字体类型

        createFont.setFontName("微软雅黑");

        // 设置字体的颜色

        createFont.setColor(HSSFColor.RED.index);

        //将字体放置到样式中

        createCellStyle.setFont(createFont);

        return createCellStyle;

    }

}

以下是导出Excel的结果图：

这里补充下合并单元格的知识点：

/*合并单元格需要用到CellRangeAddress对象

CellRangeAddress对象需要传入四个参数 列如：CellRangeAddress(param1,param2,param3,param4)；

参数分别代表如下：

param1：开始行

param2：结束行

param3：开始列

param4：结束列

例如：

合并第一行和第二行，此合并只是合并了第一列,第二列、第三列...等后面的列的一二行并没有合并

给合并的单元格赋值是需要注意行号变化

注意：记住行号和列号是从0起始

*/

sheet.addMergedRegion(new CellRangeAddress(0,1,0,0));

下面粘贴一段合并单元格行和列的综合代码：

public static void main(String[] args) {

    try {

        // 创建标题栏

        String[] titles = new String[] {"公司名称","项目名称","地址名称"};

        String[] strDate = new String[] {"2018-04-29","2018-04-30","2018-05-01","2018-05-02","2018-05-03"};

        // 创建一个工作簿

        HSSFWorkbook workbook = new HSSFWorkbook();

        //拿到标题样式和单元格样式

        HSSFCellStyle headStyle = getStyle(workbook,(short) 15);

        HSSFCellStyle colStyle = getStyle(workbook,(short) 12);

        //新建一个excel页签

        HSSFSheet createSheet = workbook.createSheet("地址信息报表");

        // 将合并表格的对象添加页签中

        CellRangeAddress cellRangeAddress = new CellRangeAddress(0, 0, 0, (6+strDate.length));

        createSheet.addMergedRegion(cellRangeAddress);

        //循环合并1至3列的的一二行

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

            createSheet.addMergedRegion(new CellRangeAddress(1, 2, i, i));

        }

        createSheet.addMergedRegion(new CellRangeAddress(1, 1, 3, 3+strDate.length));

        // 设置单元格的默认宽度

        createSheet.setDefaultColumnWidth(25);

        // 创建一行

        HSSFRow row0 = createSheet.createRow(0);

        HSSFCell cell0 = row0.createCell(0);

        // 添加标题样式

        cell0.setCellStyle(headStyle);

        // 添加标题

        cell0.setCellValue("地址信息报表");

        //设置列的标题

        HSSFRow row1 = createSheet.createRow(1);

        //  循环往excel中添加列标题

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

            HSSFCell cell1 = row1.createCell(i);

            cell1.setCellStyle(colStyle);

            cell1.setCellValue(titles[i]);

        }

        HSSFCell dateCell = row1.createCell(titles.length);

        dateCell.setCellStyle(colStyle);

        dateCell.setCellValue("2018-04-29 / 2018-05-03");

        HSSFRow row2 = createSheet.createRow(2);

        //  循环往excel中添加列标题

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

            HSSFCell cell1 = row2.createCell(i + titles.length);

            cell1.setCellStyle(colStyle);

            cell1.setCellValue(strDate[i]);

        }

        OutputStream os = new FileOutputStream("E:/test.xls");

        workbook.write(os);

        os.close();

    } catch (Exception e){

        e.printStackTrace();

    }

}

结果如下：

aaarticlea/png;base64,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" alt="" width="1164" height="136" />

Excel导入：

package com.test2;

import java.io.FileInputStream;

import java.io.InputStream;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.List;

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;

/**

 *

 * @author zhangxiang

 *

 */

public class ImportExcel {

    public static void main(String[] args) {

        try {

            //创建输入流对象

            InputStream inputStream = new FileInputStream("E:/test.xls");

            // 创建工作波对象

            HSSFWorkbook workbook = new HSSFWorkbook(inputStream);

            // 创建user集合对象用于存储Excel导入的信息

            List<User> userList = new ArrayList<User>();

            //  是否能拿到excel页签

            for (int i = 0; i < workbook.getNumberOfSheets(); i++) {

                HSSFSheet sheetAt = workbook.getSheetAt(i);

                //  不存在就结束循环

                if(null == sheetAt) {

                    continue;

                }

                //  是否存在row

                for (int j = 0; j < sheetAt.getPhysicalNumberOfRows(); j++) {

                    // 拿到第 j+2 行  前两行是标题

                    HSSFRow row = sheetAt.getRow(2+j);

                    // 不存在row就结束循环

                    if(null == row) {

                        continue;

                    }

                    // 存储一行的每个单元格拿到的值

                    User user = new User();

                    // 拿到第一个单元格的值   单元格从0开始

                    HSSFCell cell0 = row.getCell(0);

                    Float f = Float.parseFloat(cell0.toString());

                    user.setId(f.intValue());

                    // 第二个单元格的值

                    HSSFCell cell1 = row.getCell(1);

                    user.setUsername(cell1.toString());

                    //第三个

                    HSSFCell cell2 = row.getCell(2);

                    user.setPassword(cell2.toString());

                    //第四个

                    HSSFCell cell3 = row.getCell(3);

                    Float a = Float.parseFloat(cell3.toString());

                    user.setAge(a.intValue());

                    // 第五个

                    HSSFCell cell4 = row.getCell(4);

                    user.setSex(cell4.toString());

                    //第六个

                    HSSFCell cell5 = row.getCell(5);

                    user.setBirth(new SimpleDateFormat("yyyy-MM-dd").parse(cell5.toString()));

                    userList.add(user);

                }

            }

            //  输出信息  查看是否正确

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

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}

以下是导入Excel 的部分打印结果图：

以上代码直接就可以运行！！

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