SpringBoot實現Excel文件批量上傳導入數據庫

發布時間：2020-10-11 13:41:58 來源：腳本之家閱讀：307 作者：W_Meng_H 欄目：編程語言

Spring boot + Spring data jpa + Thymeleaf
批量插入 + POI讀取 + 文件上傳

pom.xml：

<!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
<dependency>
 <groupId>org.apache.poi</groupId>
 <artifactId>poi</artifactId>
 <version>3.17</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->
<dependency>
 <groupId>org.apache.poi</groupId>
 <artifactId>poi-ooxml</artifactId>
 <version>3.17</version>
</dependency>

upload.html：

<form enctype="multipart/form-data" method="post" action="/upload/excel">
 文件
 <input type="file" name="file" /> <input type="submit" value="上傳" />
</form>

如果自己的項目中使用了Spring security，頁面提交文件之后，會出現403的錯誤，最快的解決辦法，如下：

http.csrf().ignoringAntMatchers("/upload/**").

在security的配置文件中，加入上邊的代碼即可。當然還有其他的辦法，大家可在網上查找。

Controller：

package org.meng.project.controller;
 
import org.meng.project.service.ExcelService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
 
import javax.servlet.http.HttpServletRequest;
 
/**
 *<p><b>上傳Controller類</b></p>
 *<p> 上傳文件的Controller</p>
 * @Author MengMeng 
 * @Date 2018/10/6 </p>
 * @version: 0.1
 * @since JDK 1.80_144
 */
@Controller
@RequestMapping("/upload")
public class UploadController {
 @Autowired
 private HttpServletRequest request;
 
 @Autowired
 private ExcelService excelService;
 
 
 //跳轉到上傳文件的頁面
 @RequestMapping(value = "", method = RequestMethod.GET)
 public String goUpload() {
 //跳轉到 templates 中tools目錄下的 upload.html
 return "tools/upload";
 }
 
 
 
 @RequestMapping(value = "/excel",method = RequestMethod.POST)
 public String upload(MultipartFile file, Model model) throws Exception {
 
 boolean flag = excelService.getExcel(file);
 
 if(flag){
  model.addAttribute("Message", "上傳成功");
 }else{
  model.addAttribute("Message", "上傳失敗");
 }
 
 return "tools/upload";
 }
 
}

Excel實體：

package org.meng.project.entity;
 
import javax.persistence.*;
import java.io.Serializable;
import java.util.Objects;
 
/**
 * <p><b>用戶實體類</b></p>
 * @ClassName User
 * @Author MengMeng 
 * @Date 2018/10/6 </p>
 * @Version: 0.1
 * @Since JDK 1.80_171
 */
 
@Entity
@Table(name = "test", schema = "project")
public class Excel implements Serializable {
 
 private static final long serialVersionUID = 1L;
 
 @Id
 @Column(length=36)
 private String id;
 
 @Column(length=45,nullable=false,unique=true)
 private String username;
 
 @Column(length=100,nullable=false,unique=true)
 private String email;
 
 @Column(length=45,nullable=false)
 private String password;
 
 @Column(length=45)
 private String role;
 
 public Excel() {
 }
 
 public Excel(Excel user){
  this.id = user.getId();
  this.username = user.getUsername();
  this.role = user.getRole();
  this.email = user.getEmail();
  this.password = user.getPassword();
 }
 
 //get 和 set
}

Service：

package org.meng.project.service;
 
import com.alibaba.fastjson.JSON;
 
import org.meng.project.entity.*;
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;
import org.springframework.web.multipart.MultipartFile;
 
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.transaction.Transactional;
 
/**
 *<p><b>Excel的Service類接口</b></p>
 *<p> Excel的Service類接口，與Excel有關的業務邏輯方法</p>
 * @Author MengMeng 
 * @Date 2018/10/6 </p>
 * @version: 0.1
 * @since JDK 1.80_144
 */
public interface ExcelService {
 
 boolean getExcel(MultipartFile file) throws Exception;
 
}

ServiceImpl：

package org.meng.project.service;
 
import org.apache.poi.EncryptedDocumentException;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.meng.project.entity.*;
import org.meng.project.repository.ExcelRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
 
import java.io.IOException;
import java.util.*;
 
/**
 * <p><b>Excel的Service類</b></p>
 * <p>Excel的Service類，與User有關的業務邏輯方法</p>
 * @Author MengMeng
 * @Date 2018/10/6
 * @version: 0.1
 * @since JDK 1.80_144
 */
@Service
public class ExcelServiceImpl implements ExcelService {
 
 @Autowired
 private ExcelRepository excelRepository;
 
 @Override
 public boolean getExcel(MultipartFile file) throws Exception {
 // TODO Auto-generated method stub
 List<Excel> list = new ArrayList<Excel>();
 
  //1.得到上傳的表
  Workbook workbook2 = WorkbookFactory.create(file.getInputStream());
  //2、獲取test工作表
  Sheet sheet2 = workbook2.getSheet("test");
  //獲取表的總行數
  int num = sheet2.getLastRowNum();
  //System.out.println(num);
  //總列數
  int col = sheet2.getRow(0).getLastCellNum();
 
 
  //遍歷excel每一行
  for (int j = 0; j <= num; j++) {
  Row row1 = sheet2.getRow(j);
  
  //如果單元格中有數字或者其他格式的數據，則調用setCellType()轉換為string類型
  Cell cell1 = row1.getCell(0);
  cell1.setCellType(CellType.STRING);
  //獲取表中第i行，第2列的單元格
  Cell cell2 = row1.getCell(1);
  //excel表的第i行，第3列的單元格
  Cell cell3 = row1.getCell(2);
  cell3.setCellType(CellType.STRING);
  Cell cell4 = row1.getCell(3);
  Cell cell5 = row1.getCell(4);
  
  //這里new 一個對象，用來裝填從頁面上傳的Excel數據，字段根據上傳的excel決定
  Excel excel= new Excel();
  excel.setId(cell1.getStringCellValue());
  excel.setEmail(cell2.getStringCellValue());
  excel.setPassword(cell3.getStringCellValue());
  excel.setRole(cell4.getStringCellValue());
  excel.setUsername(cell5.getStringCellValue());
  list.add(excel);
 }
 
  excelRepository.saveAll(list);
 return true;
 }
}

注意：需統一數據庫和Excel表中數據值的類型，不然會出現Cannot get a STRING value from a NUMERIC cell等錯誤。

Repository：

package org.meng.project.repository;
 
import org.meng.project.entity.Excel;
import org.meng.project.repository.base.BaseRepository;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.Query;
import org.springframework.stereotype.Repository;
 
/**
 *<p><b>Excel的DAO類接口</b></p>
 *<p> Excel的DAO類接口，與Excel有關的持久化操作方法</p>
 * @Author MengMeng 
 * @Date 2018/10/6 </p>
 * @version: 0.1
 * @since JDK 1.80_144
 */
@Repository
public interface ExcelRepository extends BaseRepository<Excel, String> {
 
 
}

即可實現文件上傳：

SpringBoot實現Excel文件批量上傳導入數據庫

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持億速云。

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SpringBoot實現Excel文件批量上傳導入數據庫

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SpringBoot實現Excel文件批量上傳導入數據庫

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