所需jar包，在pom中添加如下坐標即可

<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.17</version></dependency><dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.17</version></dependency>

注意：

操作Excel文件區分版本：

2003版本（包含2003）以前的擴展名為.xls需要用HSSFWorkbook類操作2007版本（包含2007）以后的擴展名為.xlsx需要用XSSFWorkbook類操作

2007版本（包含2007）以后的擴展名為.xlsx需要用XSSFWorkbook類操作

2003版本（包含2003）以前的擴展名為.xls需要用HSSFWorkbook類操作和 07基本相似 就是把XSSFWorkbook換成HSSFWorkbook

后綴名改成 點xls

package com.zph.poi;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;import org.apache.poi.xssf.usermodel.XSSFCell;import org.apache.poi.xssf.usermodel.XSSFRow;import org.apache.poi.xssf.usermodel.XSSFSheet;import org.apache.poi.xssf.usermodel.XSSFWorkbook;import org.springframework.core.io.ClassPathResource;import org.springframework.core.io.Resource;import org.springframework.stereotype.Service;import javax.servlet.ServletOutputStream;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.net.URI;import java.net.URLEncoder;@Servicepublic class PoiServiceImpl { public void exportExcel2007() throws IOException {//創建工作簿 類似于創建Excel文件XSSFWorkbook workbook=new XSSFWorkbook();//創建 sheetname頁名XSSFSheet sheet = workbook.createSheet('員工信息');sheet.setColumnWidth(3,20*256);//給第3列設置為20個字的寬度sheet.setColumnWidth(4,20*256);//給第4列設置為20個字的寬度//創建一行,下標從0開始XSSFRow row = sheet.createRow(0);//創建這行中的列,下標從0開始 （表頭）XSSFCell cell = row.createCell(0);// 給cell 0下表賦值cell.setCellValue('姓名');//創建這行中的列,并給該列直接賦值row.createCell(1).setCellValue('年齡');row.createCell(2).setCellValue('性別');row.createCell(3).setCellValue('生日');row.createCell(4).setCellValue('手機號');// 設置表里內容row = sheet.createRow(1);row.createCell(0).setCellValue('T');row.createCell(1).setCellValue('保密');row.createCell(2).setCellValue('男');row.createCell(3).setCellValue('保密');row.createCell(4).setCellValue('12121212121');row = sheet.createRow(2);row.createCell(0).setCellValue('T');row.createCell(1).setCellValue('18');row.createCell(2).setCellValue('女');row.createCell(3).setCellValue('2000-01-01');row.createCell(4).setCellValue('12121212122');//設定 路徑File file = new File('D:zphtemp員工信息2007.xlsx');FileOutputStream stream = new FileOutputStream(file);// 需要拋異常workbook.write(stream);//關流stream.close(); } public void exportExcel2003() throws IOException {//創建工作簿 類似于創建Excel文件HSSFWorkbook workbook=new HSSFWorkbook();//創建 sheetname頁名HSSFSheet sheet = workbook.createSheet('員工信息');//創建一行,下標從0開始HSSFRow row = sheet.createRow(0);//創建這行中的列,下標從0開始 （表頭）HSSFCell cell = row.createCell(0);// 給cell 0下表賦值cell.setCellValue('姓名');//創建這行中的列,并給該列直接賦值row.createCell(1).setCellValue('年齡');row.createCell(2).setCellValue('性別');row.createCell(3).setCellValue('生日');row.createCell(4).setCellValue('手機號');// 設置表里內容row = sheet.createRow(1);row.createCell(0).setCellValue('T');row.createCell(1).setCellValue('保密');row.createCell(2).setCellValue('男');row.createCell(3).setCellValue('保密');row.createCell(4).setCellValue('12121212121');row = sheet.createRow(2);row.createCell(0).setCellValue('T');row.createCell(1).setCellValue('18');row.createCell(2).setCellValue('女');row.createCell(3).setCellValue('2000-01-01');row.createCell(4).setCellValue('12121212122');//第一種導出 給定路徑//1設定 路徑 創建文件讀進來在寫內容File file = new File('D:zphtemp員工信息2003.xls');FileOutputStream stream = new FileOutputStream(file);// 需要拋異常workbook.write(stream);//關流stream.close(); } public void exportExcel2003(HttpServletRequest request, HttpServletResponse response) throws IOException {//第二種導出 從項目中獲取模板//String realPath = request.getSession().getServletContext().getRealPath('/');Resource resource = new ClassPathResource('templates/員工信息2003Tem.xls');//jar包獲取//創建工作簿 類似于創建Excel文件HSSFWorkbook workbookTem=new HSSFWorkbook(resource.getInputStream());//創建 sheetname頁名HSSFSheet sheetTem = workbookTem.getSheet('員工信息');//HSSFSheet sheetTem = workbookTem.getSheetAt(0);HSSFRow rowTem = sheetTem.createRow(1);rowTem.createCell(0).setCellValue('xmtem');rowTem.createCell(1).setCellValue('nltem');rowTem.createCell(2).setCellValue('xbtem');rowTem.createCell(3).setCellValue('srtem');rowTem.createCell(4).setCellValue('sjhtem');ServletOutputStream outputStream = response.getOutputStream();response.reset();String fileName = URLEncoder.encode('員工信息TemOut.xls', 'utf-8');response.setHeader('Content-disposition','attachment;filename='+fileName);response.setContentType('application/x-download;charset=UTF-8');// 對響應客戶請求進行重新編碼11//response.setCharacterEncoding('utf-8');workbookTem.write(outputStream);outputStream.close(); } public String exportExcel2003(String s,HttpServletRequest request, HttpServletResponse response) throws IOException {//第三種直接導出//創建工作簿 類似于創建Excel文件HSSFWorkbook workbookTem=new HSSFWorkbook();//創建 sheetname頁名HSSFSheet sheet = workbookTem.createSheet('員工信息');//創建一行,下標從0開始HSSFRow row = sheet.createRow(0);//創建這行中的列,下標從0開始 （表頭）HSSFCell cell = row.createCell(0);// 給cell 0下表賦值cell.setCellValue('姓名');//創建這行中的列,并給該列直接賦值row.createCell(1).setCellValue('年齡');row.createCell(2).setCellValue('性別');row.createCell(3).setCellValue('生日');row.createCell(4).setCellValue('手機號');// 設置表里內容row = sheet.createRow(1);row.createCell(0).setCellValue('T');row.createCell(1).setCellValue('保密');row.createCell(2).setCellValue('男');row.createCell(3).setCellValue('保密');row.createCell(4).setCellValue('12121212121');row = sheet.createRow(2);row.createCell(0).setCellValue('T');row.createCell(1).setCellValue('18');row.createCell(2).setCellValue('女');row.createCell(3).setCellValue('2000-01-01');row.createCell(4).setCellValue('12121212122');ServletOutputStream outputStream = response.getOutputStream();response.reset();String fileName = URLEncoder.encode('員工信息TemOut.xls', 'utf-8');response.setHeader('Content-disposition','attachment;filename='+fileName);//response.setContentType('application/x-download;charset=UTF-8');response.setContentType('application/vnd.ms-excel');//response.setContentType('application/msexcel');// 對響應客戶請求進行重新編碼11//response.setCharacterEncoding('utf-8');workbookTem.write(outputStream);outputStream.close();return s; }}三、導出

@RequestMapping(value='/upload') public String uploadExcel(@RequestParam('fileData') MultipartFile file, HttpServletRequest request, HttpServletResponse response) throws Exception {InputStream in = file.getInputStream();String s = poiService.uploadExcel(file, request, response);return s; }public String uploadExcel(MultipartFile file, HttpServletRequest request, HttpServletResponse response) throws Exception {InputStream in = file.getInputStream();//D:zphtemp// 多態 拋異常//Workbook sheets = new XSSFWorkbook(stream);HSSFWorkbook sheets = new HSSFWorkbook(in);//獲取一個工作表(sheet頁)，下標從0開始HSSFSheet sheet = sheets.getSheetAt(0);for (int i = 1; i<=sheet.getLastRowNum() ; i++) { // 獲取行數 Row row = sheet.getRow(i); // 獲取單元格 取值 String value1 = row.getCell(0).getStringCellValue(); String value2 = row.getCell(1).getStringCellValue(); String value3 = row.getCell(2).getStringCellValue(); String value4 = row.getCell(3).getStringCellValue(); String value5= row.getCell(4).getStringCellValue(); System.out.println(value1); System.out.println(value2); System.out.println(value3); System.out.println(value4); System.out.println(value5);}//關流sheets.close();in.close();return 'hha'; }

postman 設置 post請求 請求頭 Content-Type multipart/form-data

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