excel文件本地下载和文件上传工具类
Posted 小样儿i
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package com.xxiang.common.utils; /** * @Author:小样儿 * @PackageName:com.xxiang.common.utils * @ClassName:ExcelUtils * @Description: **/ import cn.afterturn.easypoi.excel.ExcelImportUtil; import cn.afterturn.easypoi.excel.entity.ImportParams; import cn.afterturn.easypoi.excel.entity.result.ExcelImportResult; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Component; import org.springframework.web.multipart.MultipartFile; import javax.servlet.http.HttpServletResponse; import java.io.*; import java.net.URLEncoder; import java.nio.charset.StandardCharsets; import java.util.*; @Component public class ExcelUtils @Value("$xxiang.template") private String template; /** * 下载 * * @param fileName 文件名称 * @param response * @param workbook excel数据 */ private static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook) throws IOException try response.setCharacterEncoding("UTF-8"); response.setHeader("content-Type", "application/vnd.ms-excel"); response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName + "." + ExcelTypeEnum.XLSX.getValue(), "UTF-8")); workbook.write(response.getOutputStream()); catch (Exception e) throw new IOException(e.getMessage()); /** * excel 导入 * * @param filePath excel文件路径 * @param titleRows 标题行 * @param headerRows 表头行 * @param pojoClass pojo类型 * @param <T> * @return */ /*public static <T> List<T> importExcel(String filePath, Integer titleRows, Integer headerRows, Class<T> pojoClass) throws IOException if (StringUtils.isBlank(filePath)) return null; ImportParams params = new ImportParams(); params.setTitleRows(titleRows); params.setHeadRows(headerRows); params.setNeedSave(true); params.setSaveUrl("/excel/"); try return ExcelImportUtil.importExcel(new File(filePath), pojoClass, params); catch (NoSuchElementException e) throw new IOException("模板不能为空"); catch (Exception e) throw new IOException(e.getMessage()); */ public static<T> List<T> importExcel2(MultipartFile file , Class<T> pojoClass , String[] strings , Integer titleRows , Integer headerRows , Integer startRows , Integer startSheetIndex , Integer sheetNum , Integer readRows) if (file == null) return null; try List<String> list = Arrays.asList(new String[]ExcelTypeEnum.XLS.getValue(), ExcelTypeEnum.XLSX.getValue()); if (!list.contains(file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")))) throw new RuntimeException("请上传正确格式的excel文件"); else return importExcel(file, pojoClass, strings , titleRows, headerRows , startRows, startSheetIndex, sheetNum, readRows); catch (NoSuchElementException e) throw new RuntimeException("excel数据不能为空,核查后请重新导入"); /** * excel 导入 * * @param file excel文件 * @param titleRows 标题行 * @param headerRows 表头行 * @param pojoClass pojo类型 * @param <T> * @return */ public static<T> List<T> importExcel(MultipartFile file , Class<T> pojoClass , String[] strings , Integer titleRows , Integer headerRows , Integer startRows , Integer startSheetIndex , Integer sheetNum , Integer readRows) return importExcel(file, pojoClass, strings , titleRows, headerRows , startRows, startSheetIndex, sheetNum, readRows, true); /** * excel 导入 * * @param file 上传的文件 * @param titleRows 标题行 * @param headerRows 表头行 * @param needVerfiy 是否检验excel内容 * @param pojoClass pojo类型 * @param <T> * @return */ public static<T> List<T> importExcel(MultipartFile file , Class<T> pojoClass , String[] strings , Integer titleRows , Integer headerRows , Integer startRows , Integer startSheetIndex , Integer sheetNum , Integer readRows , boolean needVerfiy) List<T> list = null; try list = importExcel(file.getInputStream(), pojoClass, strings , titleRows, headerRows , startRows, startSheetIndex, sheetNum, readRows, needVerfiy); catch (IOException e) e.printStackTrace(); return list; /** * excel 导入 * * @param inputStream 文件输入流 * @param titleRows 标题行 * @param headerRows 表头行 * @param needVerfiy 是否检验excel内容 * @param pojoClass pojo类型 * @param <T> * @return */ public static<T> List<T> importExcel(InputStream inputStream, Class<T> pojoClass , String[] strings , Integer titleRows , Integer headerRows , Integer startRows , Integer startSheetIndex , Integer sheetNum , Integer readRows , boolean needVerfiy) ImportParams params = new ImportParams(); params.setTitleRows(titleRows); params.setHeadRows(headerRows); params.setStartRows(startRows); params.setStartSheetIndex(startSheetIndex); params.setSheetNum(sheetNum); params.setReadRows(readRows); //params.setSaveUrl("/excel/"); //params.setNeedSave(true); params.setNeedVerify(needVerfiy); params.setImportFields(strings); params.setStartRows(0); List<T> list = null; try list = ExcelImportUtil.importExcel(inputStream, pojoClass, params); catch (Exception e) e.printStackTrace(); return list; /** * Excel 类型枚举 */ enum ExcelTypeEnum /** * 文件类型 */ XLS(".xls"), XLSX(".xlsx"); private String value; ExcelTypeEnum(String value) this.value = value; public String getValue() return value; public void setValue(String value) this.value = value; public static <T> ExcelImportResult<T> importExcelMore(MultipartFile file , Class<T> pojoClass , String[] strings , Integer titleRows , Integer headerRows , Integer startRows , Integer startSheetIndex , Integer readRows) throws Exception ImportParams params = new ImportParams(); //开启验证，代表导入这里是需要验证的（根据字段上的注解） params.setNeedVerify(true); params.setTitleRows(titleRows); params.setHeadRows(headerRows); params.setStartRows(startRows); params.setStartSheetIndex(startSheetIndex); params.setReadRows(readRows); params.setImportFields(strings); try return ExcelImportUtil.importExcelMore(file.getInputStream(), pojoClass, params); catch (NoSuchElementException e) throw new RuntimeException("excel数据不能为空,核查后请重新导入"); catch (Exception e) /*e.printStackTrace(); return null;*/ throw new RuntimeException("excel模板错误,核查后请重新导入"); public static Workbook getWorkBook(MultipartFile file) throws IOException //这样写excel能兼容03和07 InputStream is = file.getInputStream(); Workbook hssfWorkbook = null; try hssfWorkbook = new HSSFWorkbook(is); catch (Exception ex) is =file.getInputStream(); hssfWorkbook = new XSSFWorkbook(is); return hssfWorkbook; /** * 下载模板文件 */ public static void downLoadFile(String path, String fileName, String contentType) File file=new File(path); try ( InputStream in=new FileInputStream(file); BufferedOutputStream bout=new BufferedOutputStream(ServletUtils.getResponse().getOutputStream()); ) HttpServletResponse response=ServletUtils.getResponse(); response.setContentType(contentType); response.setCharacterEncoding(StandardCharsets.UTF_8.name()); response.setContentLength(in.available()); response.setHeader("Content-Disposition","attachment;filename="+new String(fileName.getBytes(StandardCharsets.UTF_8), StandardCharsets.ISO_8859_1)); byte[] buffer=new byte[8192]; int len = 0; while ((len = in.read(buffer)) != -1) bout.write(buffer, 0, len); catch (IOException e) e.printStackTrace(); /** * @param str：原字符串 * @param keyword：字符 * @param before：在字符前需要插入的字段 */ public static String replacementInfo(String str, String keyword, String before) StringBuilder sb = new StringBuilder(str); String rs = str; try //字符第一次出现的位置 int index = sb.indexOf(keyword); while (index != -1) sb.insert(index, before); //下一次出现的位置， index = sb.indexOf(keyword, index + before.length() + 1); rs = sb.toString(); catch (Exception e) System.out.println("更换字符错误！！！"); e.printStackTrace(); return rs; public static void isExcelFile(MultipartFile file) if (file == null) throw new RuntimeException("请上传excel文件"); List<String> list = Arrays.asList(new String[]ExcelTypeEnum.XLS.getValue(), ExcelTypeEnum.XLSX.getValue()); if (!list.contains(file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")))) throw new RuntimeException("请上传正确格式的excel文件"); public static HttpServletResponse download(String path, HttpServletResponse response) try // path是指欲下载的文件的路径。 File file = new File(path); // 取得文件名。 String filename = file.getName(); // 取得文件的后缀名。 String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase(); // 以流的形式下载文件。 InputStream fis = new BufferedInputStream(new FileInputStream(path)); byte[] buffer = new byte[fis.available()]; fis.read(buffer); fis.close(); // 清空response response.reset(); // 设置response的Header response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes())); response.addHeader("Content-Length", "" + file.length()); OutputStream toClient = new BufferedOutputStream(response.getOutputStream()); response.setContentType("application/octet-stream"); toClient.write(buffer); toClient.flush(); toClient.close(); catch (IOException ex) ex.printStackTrace(); return response; public void downLoadExcel(String excelName, HttpServletResponse response) response.setCharacterEncoding("UTF-8"); File file=new File(excelName); response.setContentType("text/html;charset=UTF-8"); try response.setHeader("Content-disposition","attachment;filename="+new String(excelName.getBytes(),"iso-8859-1")); catch (UnsupportedEncodingException e1) // TODO Auto-generated catch block e1.printStackTrace(); OutputStream os = null; FileInputStream fileInputStream = null; DataInputStream dataInputStream = null; try os = response.getOutputStream(); fileInputStream = new FileInputStream(file); dataInputStream = new DataInputStream(fileInputStream); int r; while((r=dataInputStream.read())!=-1) os.write(r); catch (IOException e) // TODO Auto-generated catch block e.printStackTrace(); finally try fileInputStream.close(); dataInputStream.close(); catch (IOException e) // TODO Auto-generated catch block e.printStackTrace();
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