Java_导出Excel

导出的Excel标题、Sheet名称、数据内容都可以使用中文?


一、pom.xml引入jar包


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<dependency>

            <groupId>org.apache.poi</groupId>

            <artifactId>poi-ooxml</artifactId>

            <version>3.13</version>

        </dependency>

二、Excel操作内部类


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

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

import org.apache.poi.xssf.usermodel.*;

public class ExportInternalUtil {

    private XSSFWorkbook wb = null;

    private XSSFSheet sheet = null;

    /**

     * @param wb

     * @param sheet

     */

    public ExportInternalUtil(XSSFWorkbook wb, XSSFSheet sheet) {

        this.wb = wb;

        this.sheet = sheet;

    }

    /**

     * 合并单元格后给合并后的单元格加边框

     *

     * @param region

     * @param cs

     */

    public void setRegionStyle(CellRangeAddress region, XSSFCellStyle cs) {

        int toprowNum = region.getFirstRow();

        for (int i = toprowNum; i <= region.getLastRow(); i++) {

            XSSFRow row = sheet.getRow(i);

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

                XSSFCell cell = row.getCell(j);// XSSFCellUtil.getCell(row,

                                                // (short) j);

                cell.setCellStyle(cs);

            }

        }

    }

    /**

     * 设置表头的单元格样式

     *

     * @return

     */

    public XSSFCellStyle getHeadStyle() {

        // 创建单元格样式

        XSSFCellStyle cellStyle = wb.createCellStyle();

        // 设置单元格的背景颜色为淡蓝色

        cellStyle.setFillForegroundColor(HSSFColor.PALE_BLUE.index);

        cellStyle.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);

        // 设置单元格居中对齐

        cellStyle.setAlignment(XSSFCellStyle.ALIGN_CENTER);

        // 设置单元格垂直居中对齐

        cellStyle.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);

        // 创建单元格内容显示不下时自动换行

        cellStyle.setWrapText(true);

        // 设置单元格字体样式

        XSSFFont font = wb.createFont();

        // 设置字体加粗

        font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);

        font.setFontName("宋体");

        font.setFontHeight((short) 200);

        cellStyle.setFont(font);

        // 设置单元格边框为细线条

        cellStyle.setBorderLeft(XSSFCellStyle.BORDER_THIN);

        cellStyle.setBorderBottom(XSSFCellStyle.BORDER_THIN);

        cellStyle.setBorderRight(XSSFCellStyle.BORDER_THIN);

        cellStyle.setBorderTop(XSSFCellStyle.BORDER_THIN);

        return cellStyle;

    }

    /**

     * 设置表体的单元格样式

     *

     * @return

     */

    public XSSFCellStyle getBodyStyle() {

        // 创建单元格样式

        XSSFCellStyle cellStyle = wb.createCellStyle();

        // 设置单元格居中对齐

        cellStyle.setAlignment(XSSFCellStyle.ALIGN_CENTER);

        // 设置单元格垂直居中对齐

        cellStyle.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);

        // 创建单元格内容显示不下时自动换行

        cellStyle.setWrapText(true);

        // 设置单元格字体样式

        XSSFFont font = wb.createFont();

        // 设置字体加粗

        font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);

        font.setFontName("宋体");

        font.setFontHeight((short) 200);

        cellStyle.setFont(font);

        // 设置单元格边框为细线条

        cellStyle.setBorderLeft(XSSFCellStyle.BORDER_THIN);

        cellStyle.setBorderBottom(XSSFCellStyle.BORDER_THIN);

        cellStyle.setBorderRight(XSSFCellStyle.BORDER_THIN);

        cellStyle.setBorderTop(XSSFCellStyle.BORDER_THIN);

        return cellStyle;

    }

}

三、Excel操作类

共外部调用，可设置Sheet名称、标题、数据等


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import java.io.IOException;

import java.util.ArrayList;

import javax.servlet.ServletOutputStream;

import org.apache.poi.xssf.usermodel.XSSFCell;

import org.apache.poi.xssf.usermodel.XSSFCellStyle;

import org.apache.poi.xssf.usermodel.XSSFRow;

import org.apache.poi.xssf.usermodel.XSSFSheet;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import com.james.domain.User;

public class ExportUtil {

    public static void ExportExcel(String[] titles, ArrayList<User> list, ServletOutputStream outputStream) {

        // 创建一个workbook 对应一个excel应用文件

        XSSFWorkbook workBook = new XSSFWorkbook();

        // 在workbook中添加一个sheet,对应Excel文件中的sheet

        //Sheet名称，可以自定义中文名称

        XSSFSheet sheet = workBook.createSheet("Sheet1");

        ExportInternalUtil exportUtil = new ExportInternalUtil(workBook, sheet);

        XSSFCellStyle headStyle = exportUtil.getHeadStyle();

        XSSFCellStyle bodyStyle = exportUtil.getBodyStyle();

        // 构建表头

        XSSFRow headRow = sheet.createRow(0);

        XSSFCell cell = null;

        // 输出标题

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

            cell = headRow.createCell(i);

            cell.setCellStyle(headStyle);

            cell.setCellValue(titles[i]);

        }

        // 构建表体数据

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

            XSSFRow bodyRow = sheet.createRow(j + 1);

            User user = list.get(j);

            cell = bodyRow.createCell(0);

            cell.setCellStyle(bodyStyle);

            cell.setCellValue(user.getLastIp());

            cell = bodyRow.createCell(1);

            cell.setCellStyle(bodyStyle);

            cell.setCellValue(user.getLastVisit());

            cell = bodyRow.createCell(2);

            cell.setCellStyle(bodyStyle);

            cell.setCellValue(user.getPassword());

            

            cell = bodyRow.createCell(3);

            cell.setCellStyle(bodyStyle);

            cell.setCellValue(user.getUserName());

            

            cell = bodyRow.createCell(4);

            cell.setCellStyle(bodyStyle);

            cell.setCellValue(user.getUserId());

        }

        try {

            workBook.write(outputStream);

            outputStream.flush();

            outputStream.close();

        } catch (IOException e) {

            e.printStackTrace();

        } finally {

            try {

                outputStream.close();

            } catch (IOException e) {

                e.printStackTrace();

            }

        }

    }

}

四、SpringMVC Controller层调用


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@RequestMapping(value = "/excelDownload")

    public String exportExcel(HttpServletResponse response) {

        try {

            //String fileName = new String(("导出excel标题").getBytes(), "UTF-8") + ".xlsx";

            String fileName=new String(("导出excel标题").getBytes("gb2312"), "iso8859-1")+ ".xlsx";

            response.setContentType("application/vnd.ms-excel;charset=UTF-8");

            response.setHeader("Content-Disposition", "attachment;filename=" + fileName);

            response.setCharacterEncoding("utf-8");

            // response.setHeader("Content-disposition", "attachment; filename="

            // + "exdddcel" + ".xlsx");// 组装附件名称和格式

            String[] titles = { "最后IP", "最后访问时间", "密码", "用户名", "用户编号" };

            /*SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

            String date = df.format(new Date());

            Date dateNow = null;

            try {

                dateNow = df.parse(date);

            } catch (ParseException e) {

                e.printStackTrace();

            }*/

            Date dateNow = new Date();

            

            ArrayList<User> users = new ArrayList<User>();

            User user = new User();

            user.setLastIp("127.0.0.1");

            user.setLastVisit(dateNow);

            user.setPassword("123");

            user.setUserId(1);

            user.setUserName("名称：James");

            users.add(user);

            user = new User();

            user.setLastIp("192.0.0.1");

            user.setLastVisit(dateNow);

            user.setPassword("456");

            user.setUserId(2);

            user.setUserName("名称：Mary");

            users.add(user);

            ServletOutputStream outputStream = response.getOutputStream();

            ExportUtil.ExportExcel(titles, users, outputStream);

        } catch (IOException e) {

            e.printStackTrace();

        }

        return null;

    }

五、程序中用到的实体类User


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import java.io.Serializable;

import java.util.Date;

public class User implements Serializable {

    private int userId;

    private String userName;

    private String password;

    private String lastIp;

    private Date lastVisit;

    public int getUserId() {

        return userId;

    }

    public void setUserId(int userId) {

        this.userId = userId;

    }

    public String getUserName() {

        return userName;

    }

    public void setUserName(String userName) {

        this.userName = userName;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

    public String getLastIp() {

        return lastIp;

    }

    public void setLastIp(String lastIp) {

        this.lastIp = lastIp;

    }

    public Date getLastVisit() {

        return lastVisit;

    }

    public void setLastVisit(Date lastVisit) {

        this.lastVisit = lastVisit;

    }

}

六、异常情况

1、标题乱码（注释代码会出现标题乱码）


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//String fileName = new String(("导出excel标题").getBytes(), "UTF-8") + ".xlsx";

            String fileName=new String(("导出excel标题").getBytes("gb2312"), "iso8859-1")+ ".xlsx";

七、参考文档

1、http://webook-java.iteye.com/blog/1699621

2、http://www.cnblogs.com/yjmyzz/p/4206463.html

来自为知笔记(Wiz)

时间： 2024-08-26 06:38:07

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