Java匯入excel並儲存到資料庫
阿新 • • 發佈：2019-02-03
首先建立好excel表格，並對應excel表格建立資料庫表。
前臺jsp頁面：其中包含js
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>匯入excel</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <metahttp-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="匯入excel"> <script type="text/javascript" src="view/js/jquery-1.8.2.js"></script> </head> <script type="text/javascript"> var User = function() { this.init= function() { //模擬上傳excel $("#uploadEventBtn").unbind("click").bind("click", function() { $("#uploadEventFile").click(); }); $("#uploadEventFile").bind("change", function() { $("#uploadEventPath").attr("value", $("#uploadEventFile").val()); }); }; //點選上傳鈕 this.uploadBtn = function() { var uploadEventFile = $("#uploadEventFile").val(); if (uploadEventFile == '') { alert("請擇excel,再上傳"); } else if (uploadEventFile.lastIndexOf(".xls") < 0) {//可判斷以.xls和.xlsx結尾的excel alert("只能上傳Excel檔案"); } else { var url = "excel/import.do"; var formData = new FormData($('form')[0]); user.sendAjaxRequest(url, "POST", formData); } }; this.sendAjaxRequest = function(url, type, data) { $.ajax({ url : url, type : type, data : data, dataType : "json", success : function(result) { alert(result.message); }, error : function(result) { alert(result.message); }, cache : false, contentType : false, processData : false }); }; }; var user; $(function() { user = new User(); user.init(); }); </script> <body> <form enctype="multipart/form-data" id="batchUpload" action="/excel/import" method="post" class="form-horizontal"> <button class="btn btn-success btn-xs" id="uploadEventBtn" style="height:26px;" type="button" >擇檔案</button> <input type="file" name="file" style="width:0px;height:0px;" id="uploadEventFile"> <input id="uploadEventPath" disabled="disabled" type="text" placeholder="請擇excel表" style="border: 1px solid #e6e6e6; height: 26px;width: 200px;" /> </form> <button type="button" class="btn btn-success btn-sm" onclick="user.uploadBtn()" >上傳</button> </body> </html>
後臺程式碼：自己修改的一些判斷條件
/**
* 儲存上傳的Excel檔案資料
*/
@PostMapping("/Excel")
// @RequiresPermissions("biz:userwebsite:save")
public R saveExcel(HttpServletRequest request) {
MultipartFile file = null;
Map<String, Object> map = new HashMap<String, Object>();
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if (isMultipart) {
MultipartHttpServletRequest multipartRequest = WebUtils.getNativeRequest(request,
MultipartHttpServletRequest.class);
file = multipartRequest.getFile("file");
} else {
map.put("message", "請選擇檔案");
return R.ok().put("map", map);
}
if (file != null) {
String result = tdeviceService.readExcelFile(file);
map.put("message", result);
}
return R.ok().put("map", map);
}
Controller
1 import java.util.HashMap; 2 import java.util.Map; 3 4 import javax.servlet.http.HttpServletRequest; 5 import javax.servlet.http.HttpServletResponse; 6 7 import org.springframework.beans.factory.annotation.Autowired; 8 import org.springframework.stereotype.Controller; 9 import org.springframework.web.bind.annotation.RequestMapping; 10 import org.springframework.web.bind.annotation.RequestMethod; 11 import org.springframework.web.bind.annotation.RequestParam; 12 import org.springframework.web.bind.annotation.ResponseBody; 13 import org.springframework.web.multipart.MultipartFile; 14 15 import service.ImportService; 16 17 @Controller 18 @RequestMapping("/excel") 19 public class ImportExcelController{ 20 @Autowired(required=true) 21 private ImportService importService; 22 23 //匯入excel 24 @RequestMapping(value = "/import", method=RequestMethod.POST) 25 @ResponseBody 26 public Map<String, Object> importExcel(@RequestParam(value="file",required = false) MultipartFile file, HttpServletRequest request,HttpServletResponse response){ 27 Map<String, Object> map = new HashMap<String, Object>(); 28 String result = importService.readExcelFile(file); 29 map.put("message", result); 30 return map; 31 } 32 33 }
service:
1 import org.springframework.web.multipart.MultipartFile; 2 3 public interface ImportService { 4 5 /** 6 * 讀取excel中的資料,生成list 7 */ 8 String readExcelFile(MultipartFile file); 9 10 }
serviceImpl:
String fileName = file.getOriginalFilename();// 獲取檔名
//判斷檔案是否是excel檔案
if(!fileName.endsWith("xls") && !fileName.endsWith("xlsx")){
return result="請選擇Excel檔案";
}
1 import java.util.List; 2 import java.util.Map; 3 4 import org.springframework.beans.factory.annotation.Autowired; 5 import org.springframework.stereotype.Service; 6 import org.springframework.web.multipart.MultipartFile; 7 8 import service.ImportService; 9 import controller.ReadExcel; 10 import dao.UserDao; 11 12 @Service 13 public class ImportServiceImpl implements ImportService { 14 @Autowired(required = true) 15 private UserDao userDao; 16 @Override 17 public String readExcelFile(MultipartFile file) { 18 String result = ""; 19 //建立處理EXCEL的類 20 ReadExcel readExcel = new ReadExcel(); 21 //解析excel，獲取上傳的事件單 22 List<Map<String, Object>> userList = readExcel.getExcelInfo(file); 23 //至此已經將excel中的資料轉換到list裡面了,接下來就可以操作list,可以進行儲存到資料庫,或者其他操作, 24 for(Map<String, Object> user:userList){ 25 int ret = userDao.insertUser(user.get("name").toString(), user.get("sex").toString(), Integer.parseInt(user.get("age").toString())); 26 if(ret == 0){ 27 result = "插入資料庫失敗"; 28 } 29 } 30 if(userList != null