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ExportExcelUtil工具类

1884人阅读 2021/12/11 14:27 总访问:53013 评论:0 收藏:1 手机
分类: Java 学习
声明一点这个工具类不是我原创的,在别人代码里面看到的,借来用哈。。。。。。。
<!--excel处理依赖 开始-->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>4.1.0</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>4.1.0</version>
    <exclusions>
        <exclusion>
            <artifactId>poi</artifactId>
            <groupId>org.apache.poi</groupId>
        </exclusion>
        <exclusion>
            <artifactId>xmlbeans</artifactId>
            <groupId>org.apache.xmlbeans</groupId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml-schemas</artifactId>
    <version>4.1.2</version>
</dependency>
<!--结束-->

这里是压缩文件处理类
package com.example.oracle.util;

import java.io.*;
import java.util.Enumeration;
import java.util.zip.*;

public class ZipUtils {

    static final int BUFFER = 8192;
    static final String ZIP_SUFFIX = ".zip";

    /**
     * 压缩文件
     *
     * @param srcPath 要压缩的文件或文件夹(如:/usr/local/目录)
     * @param zipPath 输出的zip文件路径(如:/usr/local/abc.zip)
     * @throws IOException
     */
    public static void compress(String srcPath, String zipPath) throws IOException {
        File srcFile = new File(srcPath);
        File zipFile = new File(zipPath);
        if (!srcFile.exists()) {
            throw new FileNotFoundException(srcPath + "不存在!");
        }
        FileOutputStream out = null;
        ZipOutputStream zipOut = null;
        try {
            out = new FileOutputStream(zipFile);
            CheckedOutputStream cos = new CheckedOutputStream(out, new CRC32());
            zipOut = new ZipOutputStream(cos);
            String baseDir = "";
            compress(srcFile, zipOut, baseDir);
        } finally {
            if (null != zipOut) {
                zipOut.close();
                out = null;
            }

            if (null != out) {
                out.close();
            }
        }
    }

    private static void compress(File file, ZipOutputStream zipOut, String baseDir) throws IOException {
        if (file.isDirectory()) {
            compressDirectory(file, zipOut, baseDir);
        } else {
            compressFile(file, zipOut, baseDir);
        }
    }

    /** 压缩一个目录 */
    private static void compressDirectory(File directory, ZipOutputStream zipOut, String baseDir) throws IOException {
        File[] files = directory.listFiles();
        for (int i = 0; i < files.length; i++) {
            compress(files[i], zipOut, baseDir + directory.getName() + "/");
        }
    }

    /** 压缩一个文件 */
    private static void compressFile(File file, ZipOutputStream zipOut, String baseDir) throws IOException {
        if (!file.exists()) {
            return;
        }

        BufferedInputStream bis = null;
        try {
            bis = new BufferedInputStream(new FileInputStream(file));
            ZipEntry entry = new ZipEntry(baseDir + file.getName());
            zipOut.putNextEntry(entry);
            int count;
            byte data[] = new byte[BUFFER];
            while ((count = bis.read(data, 0, BUFFER)) != -1) {
                zipOut.write(data, 0, count);
            }

        } finally {
            if (null != bis) {
                bis.close();
            }
        }
    }

    /**
     * 解压文件
     *
     * @param zipFile
     * @param dstPath
     * @throws IOException
     */
    public static void decompress(String zipFile, String dstPath) throws IOException {
        File pathFile = new File(dstPath);
        if (!pathFile.exists()) {
            pathFile.mkdirs();
        }
        ZipFile zip = new ZipFile(zipFile);
        for (Enumeration entries = zip.entries(); entries.hasMoreElements(); ) {
            ZipEntry entry = (ZipEntry) entries.nextElement();
            String zipEntryName = entry.getName();
            InputStream in = null;
            OutputStream out = null;
            try {
                in = zip.getInputStream(entry);
                String outPath = (dstPath + "/" + zipEntryName).replaceAll("\\*", "/");
                ;
                //判断路径是否存在,不存在则创建文件路径
                File file = new File(outPath.substring(0, outPath.lastIndexOf('/')));
                if (!file.exists()) {
                    file.mkdirs();
                }
                //判断文件全路径是否为文件夹,如果是上面已经上传,不需要解压
                if (new File(outPath).isDirectory()) {
                    continue;
                }

                out = new FileOutputStream(outPath);
                byte[] buf1 = new byte[1024];
                int len;
                while ((len = in.read(buf1)) > 0) {
                    out.write(buf1, 0, len);
                }
            } finally {
                if (null != in) {
                    in.close();
                }

                if (null != out) {
                    out.close();
                }
            }
        }
        zip.close();
    }

    public static void main(String[] args) throws Exception {
        String targetFolderPath = "/Users/test/zipFile/zipFolder";
        String rawZipFilePath = "/Users/test/zipFile/raw.zip";
        String newZipFilePath = "/Users/test/zipFile/new.zip";

        //将Zip文件解压缩到目标目录
        decompress(rawZipFilePath, targetFolderPath);

        //将目标目录的文件压缩成Zip文件
        compress(targetFolderPath, newZipFilePath);

    }

}

主要处理类

package com.example.oracle.util;

import lombok.extern.slf4j.Slf4j;
import org.apache.poi.ss.usermodel.BorderStyle;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.*;
import org.apache.tomcat.util.http.fileupload.FileUtils;
import org.springframework.util.ObjectUtils;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;


@Slf4j
public class ExportExcelUtil<T> {


    // 新版Excel文件后缀
    private static final String EXCEL_SUFFIX = ".xlsx";

    /**
     * 导出多Sheet的Excel到HttpServletResponse流中(注:字段定义顺序需跟表头完全一致)
     *
     * (导出Excel格式:表头内容居中,字体略大于正文,颜色深灰色。正文文本类型对齐方式居左,数字类型对齐方式居右。仅有数据的单元格,有边框环绕,实体类的属性顺序即为表头顺序)
     *
     * @param fileName          Excel文件名
     * @param sheetNames        多个Sheet工作表的名称列表(不可重复)
     * @param titleList         多个Sheet的标题名称列表(没有标题,则传null)
     * @param headersList       多个Sheet的表头列表
     * @param dataLists         多个Sheet的数据源
     * @param response          Http响应
     * @param pattern           时间类型数据的格式,默认:yyyy-MM-dd HH:mm:ss
     * @param isExportNullField 空字段是否导出(true:导出,false:不导出)
     *
     */
    public static <T> void exportExcel(String fileName, List<String> sheetNames, List<String> titleList,
                                       List<List<String>> headersList, List<List<T>> dataLists, HttpServletResponse response, String pattern,
                                       boolean isExportNullField) {
        XSSFWorkbook wb = exportAllExcel(sheetNames, titleList, headersList, dataLists, pattern, isExportNullField);
        setResponseHeader(response, replaceSpecialCharacter(fileName));
        ServletOutputStream out = null;
        try {
            out = response.getOutputStream();
            wb.write(out);
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                out.flush();
                out.close();
                wb.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 导出多Sheet动态列的Excel到HttpServletResponse流中(注:字段定义顺序需跟表头完全一致)
     *
     * @param fileName          Excel文件名
     * @param sheetNames        多个Sheet工作表的名称列表(不可重复)
     * @param titleList         多个Sheet的标题名称列表(没有标题,则传null)
     * @param headersList       多个Sheet的表头列表
     * @param dataLists         多个Sheet的数据源
     * @param response          Http响应
     * @param pattern           时间类型数据的格式,默认:yyyy-MM-dd HH:mm:ss
     * @param isExportNullField 空字段是否导出(true:导出,false:不导出,导出空单元格显示为"--")
     */
    public static void exportDynamicExcel(String fileName, List<String> sheetNames, List<String> titleList,
                                          List<List<String>> headersList, List<List<Map<String, Object>>> dataLists, HttpServletResponse response,
                                          String pattern, boolean isExportNullField) {
        XSSFWorkbook wb = exportDynamicExcelImpl(sheetNames, titleList, headersList, dataLists, pattern,
                isExportNullField);
        setResponseHeader(response, replaceSpecialCharacter(fileName));
        ServletOutputStream out = null;
        try {
            out = response.getOutputStream();
            wb.write(out);
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                out.flush();
                out.close();
                wb.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 导出多个Excel并压缩到zip包中
     *
     * @param response          HttpServletResponse
     * @param excelList         多个Excel数据源
     * @param filePath          导出路径(文件夹)
     * @param zipName           压缩包名,如(ABC)
     * @param pattern           Excel中的时间格式
     * @param isExportNullField 空字段是否导出(true:导出,false:不导出,导出空单元格显示为"--")
     */
    public static void exportExcelsToZip(HttpServletResponse response, List<Map<String, Object>> excelList,
                                         String filePath, String zipName, String pattern, boolean isExportNullField) {
        setZipResponseHeader(response, replaceSpecialCharacter(zipName), true, ".zip");
        long timestamp = System.nanoTime();
        // 本次导出,生成一个excel文件的上级文件夹
        String targetPath = filePath + File.separator + "temp" + File.separator + timestamp + File.separator + zipName;
        for (Map<String, Object> excelMap : excelList) {
            XSSFWorkbook wb = exportDynamicExcelImpl((List<String>) excelMap.get("sheetNames"), null,
                    (List<List<String>>) excelMap.get("headers"),
                    (List<List<Map<String, Object>>>) excelMap.get("dataLists"), pattern, isExportNullField);

            // Excel输出路径示例:/usr/local/tomcat/excels/temp/1649149721911900/报表20210416/xx名称-20210416.xlsx
            String excelPath =
                    targetPath + File.separator + replaceSpecialCharacter(excelMap.get("fileName").toString())
                            + EXCEL_SUFFIX;
            try {
                File file = new File(excelPath);
                FileUtils.forceMkdirParent(file);
                FileOutputStream outputStream = new FileOutputStream(file);
                wb.write(outputStream);
                outputStream.close();
                wb.close();
                log.info("成功导出Excel:" + file.getName());
            } catch (IOException e) {
                log.warn("导出Excel时,创建文件出错");
                e.printStackTrace();
            } finally {
                try {
                    wb.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        // 将所有Excel压缩,并写入到response中
        ServletOutputStream out = null;
        FileInputStream fileInputStream = null;
        try {
            // zip输出路径示例:/usr/local/tomcat/excels/temp/1649149721911900/日报20210416.zip
            String outputPath =
                    filePath + File.separator + "temp" + File.separator + timestamp + File.separator + zipName
                            + ZipUtils.ZIP_SUFFIX;
            ZipUtils.compress(targetPath, outputPath);
            File zipFile = new File(outputPath);
            fileInputStream = new FileInputStream(zipFile);
            BufferedInputStream bufferedInputStream = new BufferedInputStream(fileInputStream);
            out = response.getOutputStream();
            byte[] bytes = new byte[bufferedInputStream.available()];
            // 必须加此行代码,否则下载的Zip包损坏
            int read = bufferedInputStream.read(bytes);
            out.write(bytes);
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                out.flush();
                out.close();
                fileInputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 设置响应的类型、编码和文件名称
     *
     * @param response
     * @param fileName
     */
    public static void setResponseHeader(HttpServletResponse response, String fileName) {
        try {
            response.reset();
            response.setContentType("application/msexcel");// 设置生成的文件类型
            response.setCharacterEncoding("UTF-8");// 设置文件头编码方式和文件名
            // 在浏览器中测试生效,postman中文件名为response,无法修改
            response.setHeader("Content-disposition", "attachment;filename=".concat(String
                    .valueOf(URLEncoder.encode(replaceSpecialCharacter(fileName) + EXCEL_SUFFIX, "UTF-8"))));
            // 此设置,可保证web端可以取到文件名
            response.setHeader("Access-Control-Expose-Headers", "Content-Disposition");
            // 网关服务会校验是否有"Download"标识
            response.setHeader("Response-Type", "Download");
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    /**
     * 设置Zip下载的响应的类型、编码和文件名称
     *
     * @param response  http响应
     * @param fileName  文件名
     * @param urlEncode 是否URLEncode
     * @param zipSuffix zip后缀名(默认为.zip)
     */
    public static void setZipResponseHeader(HttpServletResponse response, String fileName, boolean urlEncode,
                                            String zipSuffix) {
        try {
            if (zipSuffix == null) {
                zipSuffix = ".zip";
            }
            String downloadName = urlEncode == true ?
                    String.valueOf(URLEncoder.encode(replaceSpecialCharacter(fileName) + zipSuffix, "UTF-8")) :
                    String.valueOf(replaceSpecialCharacter(fileName) + zipSuffix);
            response.reset();
            // 设置生成的文件类型
            response.setContentType("application/x-zip-compressed");
            //response.setContentType("application/octet-stream");
            // 设置文件头编码方式和文件名
            response.setCharacterEncoding("UTF-8");
            response.setHeader("Content-Disposition", "attachment;filename=".concat(downloadName));
            response.setHeader("Access-Control-Expose-Headers", "Content-Disposition");
            // 网关服务会校验是否有"Download"标识
            response.setHeader("Response-Type", "Download");
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    /**
     * 设置响应的类型、编码和文件名称
     *
     * @param response
     * @param fileName
     */
    public static void setResponseHeader(HttpServletResponse response, String fileName, boolean urlEncode) {
        try {
            String downloadName = urlEncode == true ?
                    String.valueOf(URLEncoder.encode(replaceSpecialCharacter(fileName) + EXCEL_SUFFIX, "UTF-8")) :
                    String.valueOf(replaceSpecialCharacter(fileName) + EXCEL_SUFFIX);
            response.reset();
            response.setContentType("application/msexcel");// 设置生成的文件类型
            response.setCharacterEncoding("UTF-8");// 设置文件头编码方式和文件名
            // 在浏览器中测试生效,postman中文件名为response,无法修改
            response.setHeader("Content-Disposition", "attachment;filename=".concat(downloadName));
            response.setHeader("Access-Control-Expose-Headers", "Content-Disposition");
            // 网关服务会校验是否有"Download"标识
            response.setHeader("Response-Type", "Download");
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    /**
     * 多Sheet导出实现
     *
     * @param sheetNames        Sheet页名称列表
     * @param titleList         标题列表
     * @param headersList       表头列表
     * @param dataLists         sheet数据源列表
     * @param pattern           时间格式
     * @param isExportNullField 是否导出空字段
     * @return
     */
    private static <T> XSSFWorkbook exportAllExcel(List<String> sheetNames, List<String> titleList,
                                                   List<List<String>> headersList, List<List<T>> dataLists, String pattern, boolean isExportNullField) {
        // 创建一个工作薄
        XSSFWorkbook workbook = new XSSFWorkbook();
        for (int i = 0; i < dataLists.size(); i++) {
            // 创建一个工作表
            XSSFSheet sheet = workbook.createSheet(replaceSpecialCharacter(sheetNames.get(i)));
            // 设置单元格列宽度为16个字节
            sheet.setDefaultColumnWidth((short) 16);
            // 创建表头样式
            XSSFCellStyle headersStyle = workbook.createCellStyle();
            headersStyle.setBorderTop(BorderStyle.THIN);
            headersStyle.setBorderBottom(BorderStyle.THIN);
            headersStyle.setBorderLeft(BorderStyle.THIN);
            headersStyle.setBorderRight(BorderStyle.THIN);
            // 表头内容对齐方式:居中
            headersStyle.setAlignment(HorizontalAlignment.CENTER);
            XSSFFont headersFont = workbook.createFont();
            // 设置字体格式
            headersFont.setColor(new XSSFColor(java.awt.Color.DARK_GRAY));
            headersFont.setFontHeightInPoints((short) 14);
            // 表头样式应用生效
            headersStyle.setFont(headersFont);
            XSSFCellStyle dataSetStyle = workbook.createCellStyle();
            // 正文单元格边框样式
            dataSetStyle.setBorderBottom(BorderStyle.THIN);
            dataSetStyle.setBorderRight(BorderStyle.THIN);
            dataSetStyle.setBorderLeft(BorderStyle.THIN);
            // 数据内容对齐方式:居左
            // dataSetStyle.setAlignment(HorizontalAlignment.CENTER_SELECTION);
            XSSFFont dataSetFont = workbook.createFont();
            // 正文字体颜色
            dataSetFont.setColor(new XSSFColor(java.awt.Color.BLACK));
            // 为正文设置样式
            dataSetStyle.setFont(dataSetFont);
            // 获取当前Sheet页的表头
            List<String> headers = headersList.get(i);
            int index = 0;
            if (!ObjectUtils.isEmpty(titleList)) {
                String titleName = titleList.get(i);
                if (!ObjectUtils.isEmpty(titleName)) {
                    XSSFCellStyle titleStyle = workbook.createCellStyle();
                    // 将首行合并居中作为标题栏
                    sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, headers.size() - 1));
                    XSSFFont titleFont = workbook.createFont();
                    // 设置标题字体大小
                    titleFont.setFontHeightInPoints((short) 20);
                    // 设置标题字体样式
                    titleStyle.setFont(titleFont);
                    // 创建标题行并设置样式
                    XSSFRow titleRow = sheet.createRow(0);
                    XSSFCell titleCell = titleRow.createCell(0);
                    titleCell.setCellStyle(titleStyle);
                    titleCell.setCellValue(titleName);
                    index = 1;
                }
            }
            // 创建表头并设置样式
            XSSFRow row = sheet.createRow(index);
            for (short j = 0; j < headers.size(); j++) {
                XSSFCell cell = row.createCell(j);
                cell.setCellStyle(headersStyle);
                XSSFRichTextString text = new XSSFRichTextString(headers.get(j));
                cell.setCellValue(text);
            }
            // 导出正文数据,并设置其样式
            Iterator<?> it = dataLists.get(i).iterator();
            while (it.hasNext()) {
                index++;
                row = sheet.createRow(index);
                Object entity = it.next();
                // 利用反射,根据实体类属性的先后顺序,动态调用其getXxx()方法,得到属性值
                Field[] fields = entity.getClass().getDeclaredFields();
                for (short k = 0; k < fields.length; k++) {
                    XSSFCell cell = row.createCell(k);
                    Field field = fields[k];
                    String fieldName = field.getName();
                    String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);
                    try {
                        @SuppressWarnings("rawtypes")
                        Class entityClass = entity.getClass();
                        @SuppressWarnings("unchecked")
                        Method getMethod = entityClass.getMethod(getMethodName, new Class[] {});
                        Object value = getMethod.invoke(entity, new Object[] {});
                        String textValue = null;
                        // 如果是时间类型,格式化
                        if (value instanceof Date) {
                            Date date = (Date) value;
                            pattern = pattern == null || pattern.equals("") ? "yyyy-MM-dd HH:mm:ss" : pattern;
                            SimpleDateFormat sdf = new SimpleDateFormat(pattern);
                            textValue = sdf.format(date);
                        } else {
                            // 若字段为空且允许导出空字段,则将null导出为""
                            textValue = value == null && isExportNullField ? "" : value.toString();
                        }
                        if (!textValue.equals("")) {
                            // 有数据时边框环绕
                            cell.setCellStyle(dataSetStyle);
                            // 正则判断是否为数值
                            Pattern p = Pattern.compile("^\\d+(\\.\\d+)?$");
                            Matcher matcher = p.matcher(textValue);
                            if (matcher.matches()) {
                                // 是数字当作double处理,整型也不会补充小数点
                                cell.setCellValue(Double.parseDouble(textValue));
                            } else {
                                // 不是数字类型作为文本输出
                                cell.setCellValue(textValue);
                            }
                        }
                    } catch (SecurityException | NoSuchMethodException | IllegalArgumentException | IllegalAccessException | InvocationTargetException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
        return workbook;
    }

    /**
     * 多Sheet导出动态列到Excel实现(数据源为Map)
     *
     * @param sheetNames        Sheet页名称列表
     * @param titleList         标题列表
     * @param headersList       表头列表
     * @param dataLists         sheet数据源列表
     * @param pattern           时间格式
     * @param isExportNullField 是否导出空字段
     * @return XSSFWorkbook workbook
     */
    private static XSSFWorkbook exportDynamicExcelImpl(List<String> sheetNames, List<String> titleList,
                                                       List<List<String>> headersList, List<List<Map<String, Object>>> dataLists, String pattern,
                                                       boolean isExportNullField) {
        // 创建一个工作薄
        XSSFWorkbook workbook = new XSSFWorkbook();
        for (int i = 0; i < dataLists.size(); i++) {
            // 创建一个工作表
            XSSFSheet sheet = workbook.createSheet(replaceSpecialCharacter(sheetNames.get(i)));
            // 设置单元格列宽度为16个字节
            sheet.setDefaultColumnWidth((short) 16);
            // 创建表头样式
            XSSFCellStyle headersStyle = workbook.createCellStyle();
            headersStyle.setBorderTop(BorderStyle.THIN);
            headersStyle.setBorderBottom(BorderStyle.THIN);
            headersStyle.setBorderLeft(BorderStyle.THIN);
            headersStyle.setBorderRight(BorderStyle.THIN);
            // 表头内容对齐方式:居中
            headersStyle.setAlignment(HorizontalAlignment.CENTER);
            XSSFFont headersFont = workbook.createFont();
            // 设置字体格式
            headersFont.setColor(new XSSFColor(java.awt.Color.DARK_GRAY, new DefaultIndexedColorMap()));
            headersFont.setFontHeightInPoints((short) 12);
            // 表头样式应用生效
            headersStyle.setFont(headersFont);
            // 设置单元格内内容换行
            headersStyle.setWrapText(true);
            XSSFCellStyle dataSetStyle = workbook.createCellStyle();
            // 正文单元格边框样式
            dataSetStyle.setBorderBottom(BorderStyle.THIN);
            dataSetStyle.setBorderRight(BorderStyle.THIN);
            dataSetStyle.setBorderLeft(BorderStyle.THIN);
            // 数据内容对齐方式:居左
            // dataSetStyle.setAlignment(HorizontalAlignment.CENTER_SELECTION);
            XSSFFont dataSetFont = workbook.createFont();
            // 正文字体颜色
            dataSetFont.setColor(new XSSFColor(java.awt.Color.BLACK, new DefaultIndexedColorMap()));
            // 为正文设置样式
            dataSetStyle.setFont(dataSetFont);
            // 获取当前Sheet页的表头
            List<String> headers = headersList.get(i);
            int index = 0;
            if (!ObjectUtils.isEmpty(titleList)) {
                String titleName = titleList.get(i);
                if (!ObjectUtils.isEmpty(titleName)) {
                    XSSFCellStyle titleStyle = workbook.createCellStyle();
                    // 将首行合并居中作为标题栏
                    sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, headers.size() - 1));
                    XSSFFont titleFont = workbook.createFont();
                    // 设置标题字体大小
                    titleFont.setFontHeightInPoints((short) 20);
                    // 设置标题字体样式
                    titleStyle.setFont(titleFont);
                    // 创建标题行并设置样式
                    XSSFRow titleRow = sheet.createRow(0);
                    XSSFCell titleCell = titleRow.createCell(0);
                    titleCell.setCellStyle(titleStyle);
                    titleCell.setCellValue(titleName);
                    index = 1;
                }
            }
            // 创建表头并设置样式
            XSSFRow row = sheet.createRow(index);
            for (short j = 0; j < headers.size(); j++) {
                XSSFCell cell = row.createCell(j);
                cell.setCellStyle(headersStyle);
                XSSFRichTextString text = new XSSFRichTextString(headers.get(j));
                cell.setCellValue(text);
            }
            // 导出正文数据,并设置其样式
            ListIterator<Map<String, Object>> it = dataLists.get(i).listIterator();
            while (it.hasNext()) {
                try {
                    index++;
                    row = sheet.createRow(index);
                    Map<String, Object> map = it.next();
                    headers = new ArrayList<String>(map.keySet());
                    List<Object> values = new ArrayList<Object>(map.values());
                    for (int k = 0; k < map.keySet().size(); k++) {
                        try {
                            XSSFCell cell = row.createCell(k);
                            cell.setCellStyle(dataSetStyle);
                            String textValue = null;
                            Object value = values.get(k);
                            // 如果是时间类型,格式化
                            if (value instanceof Date) {
                                Date date = (Date) value;
                                pattern = pattern == null || pattern.equals("") ? "yyyy-MM-dd HH:mm:ss" : pattern;
                                SimpleDateFormat sdf = new SimpleDateFormat(pattern);
                                textValue = sdf.format(date);
                            } else {
                                // 若字段为空且用户允许导出空字段,则将null导出为"--"
                                textValue = value == null && isExportNullField ? "--" : value.toString();
                            }
                            if (!textValue.equals("")) {
                                // 有数据时边框环绕
                                //cell.setCellStyle(dataSetStyle);
                                // 正则判断是否为数值
                                Pattern p = Pattern.compile("^\\d+(\\.\\d+)?$");
                                Matcher matcher = p.matcher(textValue);
                                if (matcher.matches()) {
                                    // 是数字当作double处理,整型也不会补充小数点
                                    cell.setCellValue(Double.parseDouble(textValue));
                                } else {
                                    // 不是数字类型作为文本输出
                                    cell.setCellValue(textValue);
                                }
                            }
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
        return workbook;

    }

    /**
     * 用下划线替换所有特殊字符
     *
     * @param targetStr 目标字符串
     */
    public static String replaceSpecialCharacter(String targetStr) {
        if (null != targetStr && !"".equals(targetStr.trim())) {
            String regEx = "[\\\\|:/\"<>?*\\[\\] ]";
            Pattern p = Pattern.compile(regEx);
            Matcher m = p.matcher(targetStr);
            return m.replaceAll("_");
        }
        return null;
    }

}
测试
@RequestMapping(value = "/exportExcel", method = RequestMethod.GET)
@ResponseBody
public void exportExcelTest(HttpServletResponse response) {
    // 调用你的服务,获取数据源
    List<List<MroOriginalInfo>> dataLists = new ArrayList<>();
    List<MroOriginalInfo> mroOriginalInfoList= mroOriginalInfoService.getList();
    dataLists.add(mroOriginalInfoList);

    if (dataLists != null && dataLists.size() > 0) {
        try {
            // Sheet页名称列表
            List<String> sheetNames = new ArrayList<String>();
            sheetNames.add("基站id");//这里必须写一个名称,不然要报错
            // 一个Sheet页表头名称列表
            List<String> headers = new ArrayList<String>(
                    Arrays.asList("任务编号", "任务发起地市", "时间", "基站id", "传输标记"));
            // 模拟多个Sheet页表头
            List<List<String>> headersList = Arrays.asList(headers, headers, headers);
            // 多个Sheet页标题列表(若)
            List<String> titleList = new ArrayList<String>();
            ExportExcelUtil
                    .exportExcel("Excel文件名", sheetNames, titleList, headersList, dataLists, response, null, true);
        } catch (Exception e) {
            log.error("导出基站数据出错", e);
        }

    }

}


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