1.首先我們先導入poi和文件上傳的依賴

1. <!--POI-->
2. <dependency>
3. <groupId>org.apache.poi</groupId>
4. <artifactId>poi-ooxml-schemas</artifactId>
5. <version>3.14-beta1</version>
6. </dependency>
7.  
8. <!--文件上傳依賴-->
9. <dependency>
10. <groupId>commons-fileupload</groupId>
11. <artifactId>commons-fileupload</artifactId>
12. <version>1.2.2</version>
13. </dependency>
14. <dependency>
15. <groupId>commons-io</groupId>
16. <artifactId>commons-io</artifactId>
17. <version>2.4</version>
18. </dependency>

2.在spring-mvc.xml中配置文件上傳解析器

1. <!-- 配置文件上傳解析器 -->
2. <!-- id 的值是固定的-->
3. <bean id="multipartResolver"
4. class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
5. <!-- 設置上傳文件的最大尺寸為 5MB -->
6. <property name="maxUploadSize">
7. <value>5242880</value>
8. </property>
9. </bean>

3.創建index.html

1. <!-- excel文件導出 -->
2. <p><a href="User/exportExcel.do" rel="external nofollow" >導出</a>
3. <!-- excel文件導入 -->
4. <form action="User/importExcel.do" method="post" enctype="multipart/form-data">
5. <input type="file" name="userExcel" />
6. <input type="submit" value="導入">
7. </form>

4.創建實體類

1. public class User {
2. private Integer id;
3. private String username;
4. private String password;
5. /* get 和 set */
6. }

5.Controller層

1. /**
2. * 導出Excel
3. * @param request
4. * @param response
5. */
6. @RequestMapping("/exportExcel")
7. @ResponseBody
8. public void exportExcel(HttpServletRequest request, HttpServletResponse response){
9. try {
10. //獲取數據源
11. List<User> userList = service.queryUserAll();
12. //導出excel
13. response.setHeader("Content-Disposition","attachment;filename="+new String("用戶信息.xls".getBytes(),"ISO-8859-1"));
14. response.setContentType("application/x-excel;charset=UTF-8");
15. OutputStream outputStream = response.getOutputStream();
16. //導出
17. service.exportExcel(userList,outputStream);
18. outputStream.close();
19. } catch (IOException e) {
20. e.printStackTrace();
21. }
22. }

1. /**
2. * 導入exc
3. * @param userExcel
4. * @param request
5. * @param session
6. * @return
7. */
8.  
9. @RequestMapping("/importExcel")
10. @ResponseBody
11. public String importExcel(MultipartFile userExcel, HttpServletRequest request, HttpSession session) throws IOException, InvalidFormatException {
12. if(userExcel == null){
13. session.setAttribute("excelName", "未上傳文件，上傳失敗！");
14. return null;
15. }
16. String userExcelFileName = userExcel.getOriginalFilename();
17. if(!userExcelFileName.matches("^.+\\.(?i)((xls)|(xlsx))$")){
18. session.setAttribute("excelName", "文件格式不正確！請使用.xls或.xlsx后綴的文檔，導入失敗！");
19. return null;
20. }
21. //導入
22. service.importExcel(userExcel);
23. session.setAttribute("excelName", "導入成功！");
24. return "redirect:queryUserAll.do";
25. }

6.運行測試

1.點擊導出將數據庫的內容以后綴為 .xls的文件下載下來

2. 選擇Excel文件點擊導入會將文件里的內容導入到數據庫中

到此這篇關于SSM框架使用poi導入導出Excel的文章就介紹到這了,更多相關SSM框架導入導出Excel內容請搜索服務器之家以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持服務器之家！

原文鏈接：https://blog.csdn.net/weixin_51311866/article/details/115246070