Java实现上传Excel文件并导出到数据库
1、导入依赖
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<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>4.1.2</version></dependency><dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml-schemas</artifactId> <version>4.1.2</version></dependency><dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>4.1.2</version></dependency><dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.16.20</version></dependency> |
2、domain
实体类的字段根据自己Excel的表头来决定，数据库的表字段最好和实体类一一对应
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import lombok.Data;// Excel实体类@Datapublic class Detailed { public Long id; // 主键 public String auditDate; // 审核日期 public Integer sceneId; // 场景id public String sceneName; // 场景名称 public String entityid; // entityid public Long housingResourcesId; // 房源id/实拍视频id public Integer cityid; // cityid/城市id public String firstInstanceOA; // 初审oa/一审审核人oa public String firstInstance; // 初审方/一审核员部门名称 public String preliminaryResults; // 初审结果/一审审核结果 public String reasonsForFirstInstance; // 初审原因/一审审核原因 public String timeOfInitialExaminationAndStorage; // 初审入库时间 public String initialAuditTime; // 初审审核时间 public Double shenheshichang; // shenheshichang public String timeoutStatus; // 超时状态 public String qualityInspectionResults; // 质检结果/质检审核结果 public String qualityInspectionReasons; // 质检原因/质检审核原因 public String qualificationStatus; // 质检合格原因} |
3、utils
获取Excel表格中的数据,其中
// 获取目标单元格的值并存进对象中根据自己的实体类进行编写
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import com.iyunfish.tongcheng.domain.Detailed;import org.apache.poi.ss.usermodel.*;import java.io.IOException;import java.io.InputStream;import java.util.ArrayList;import java.util.List;public class ExcelUtils { public static List<Detailed> excelToShopIdList(InputStream inputStream) throws IOException { Workbook workbook = WorkbookFactory.create(inputStream); inputStream.close(); // 在工作簿获取目标工作表 Sheet sheet = workbook.getSheetAt(0); // 获取到最后一行 int physicalNumberOfRows = sheet.getPhysicalNumberOfRows(); // 该集合用来储存行对象 ArrayList<Detailed> detaileds = new ArrayList<>(); // 遍历整张表，从第二行开始，第一行的表头不要，循环次数不大于最后一行的值 for (int i = 1; i < physicalNumberOfRows; i++) { // 该对象用来储存行数据 Detailed detailed = new Detailed(); // 获取当前行数据 Row row = sheet.getRow(i); // 获取目标单元格的值并存进对象中 detailed.setAuditDate(row.getCell(0).getStringCellValue()); detailed.setSceneId(Integer.valueOf(row.getCell(1).getStringCellValue())); detailed.setSceneName(row.getCell(2).getStringCellValue()); detailed.setEntityid(row.getCell(3).getStringCellValue()); detailed.setHousingResourcesId(Long.valueOf(row.getCell(4).getStringCellValue())); detailed.setCityid(Integer.valueOf(row.getCell(5).getStringCellValue())); detailed.setFirstInstanceOA(row.getCell(6).getStringCellValue()); detailed.setFirstInstance(row.getCell(7).getStringCellValue()); detailed.setPreliminaryResults(row.getCell(8).getStringCellValue()); detailed.setReasonsForFirstInstance(row.getCell(9).getStringCellValue()); detailed.setTimeOfInitialExaminationAndStorage(row.getCell(10).getStringCellValue()); detailed.setInitialAuditTime(row.getCell(11).getStringCellValue()); detailed.setShenheshichang(Double.valueOf(row.getCell(12).getStringCellValue())); detailed.setTimeoutStatus(row.getCell(13).getStringCellValue()); detailed.setQualityInspectionResults(row.getCell(14).getStringCellValue()); detailed.setQualityInspectionReasons(row.getCell(15).getStringCellValue()); detailed.setQualificationStatus(row.getCell(16).getStringCellValue()); // 把对象放到集合里 detaileds.add(detailed); System.out.println("获取到的当前行数据：" + detailed); } return detaileds; }} |
4、Controller
数据库表的id点上自增，这样添加的时候就不用再添加id了
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import com.iyunfish.tongcheng.domain.Detailed;import com.iyunfish.tongcheng.service.ReadService;import com.iyunfish.tongcheng.utils.ExcelUtils;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.multipart.MultipartFile;import java.util.List;@Controllerpublic class UploadController { @Autowired private ReadService readService; @RequestMapping("/file/upload") public void pubggupload(@RequestParam("file") MultipartFile file) throws Exception { String name = file.getOriginalFilename(); if(name.length() < 5 || !name.substring(name.length() - 5).equals(".xlsx")) { throw new Exception("文件格式错误"); } // 获取Excel中的数据 List<Detailed> detaileds = ExcelUtils.excelToShopIdList(file.getInputStream()); // 向数据库遍历添加数据库 for (int i = 0; i < detaileds.size(); i++) { // 获取行信息 Detailed detailed = detaileds.get(i); // 先根据eneityid查询数据库里有没有一样的，没有就进行添加 List<Long> longs = readService.queryDetailedByEneityid(detailed.getEntityid()); if (longs.size() <= 0) { readService.addDetailed(detailed); } else { System.out.println("error：该条信息已存在 message：" + detailed); } } }} |
逻辑层接口和实现类没有逻辑，直接到控制层的xml文件
5、xml
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<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" ><mapper namespace="com.iyunfish.tongcheng.mapper.ReadMapper"> <select id="queryDetailedByEneityid" parameterType="String" resultType="com.itZhao.domain.Detailed"> SELECT id FROM detailed WHERE entityid = #{entityid} </select> <insert id="addDetailed" parameterType="com.iyunfish.tongcheng.domain.Detailed"> INSERT INTO `tongcheng`.`detailed` ( `audit_date`, `scene_id`, `scene_name`, `entityid`, `housing_resources_id`, `cityid`, `firstInstanceOA`, `firstInstance`, `preliminary_results`, `reasons_for_firstInstance`, `time_ofInitial_examination_and_storage`, `initial_audit_time`, `shenheshichang`, `timeout_status`, `quality_inspection_results`, `quality_inspection_reasons`, `qualification_status` ) VALUES (#{read.auditDate}, #{read.sceneId}, #{read.sceneName}, #{read.entityid}, #{read.housingResourcesId}, #{read.cityid}, #{read.firstInstanceOA}, #{read.firstInstance}, #{read.preliminaryResults}, #{read.reasonsForFirstInstance}, #{read.timeOfInitialExaminationAndStorage}, #{read.initialAuditTime}, #{read.shenheshichang}, #{read.timeoutStatus}, #{read.qualityInspectionResults}, #{read.qualityInspectionReasons}, #{read.qualificationStatus}) </insert></mapper> |
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原文链接：https://www.jianshu.com/p/79ab13472cc6
