Java_导出Excel

时间：2016-02-25 19:45:00 阅读：360 评论：0 收藏：0 [点我收藏+]

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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

<dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.13</version>
        </dependency>

二、Excel操作内部类

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

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

@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

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）

//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)

Java_导出Excel

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原文地址：http://www.cnblogs.com/gossip/p/5218029.html

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