springboot实现上传并解析Excel

Posted 2022-10-12 createsequence

添加pom依赖

<!-- excel解析包 -->
<!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
<!--处理2003 excel-->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>3.16</version>
</dependency>
<!--处理2007 excel-->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>3.16</version>
</dependency>

在springboot中配置MultipartResolver

//配置文件上传
@Bean(name = "multipartResolver")
public MultipartResolver multipartResolver() 
    CommonsMultipartResolver resolver = new CommonsMultipartResolver();
    resolver.setDefaultEncoding("UTF-8");
    // resolveLazily属性启用是为了推迟文件解析，以在在UploadAction中捕获文件大小异常
    resolver.setResolveLazily(true);
    resolver.setMaxInMemorySize(40960);
    // 上传文件大小 5G
    resolver.setMaxUploadSize(5 * 1024 * 1024 * 1024);
    return resolver;

Excel解析工具类

package com.sanyu.tender.util.excelAnalysis;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;
import java.util.ArrayList;

/**
 * @Author：huang
 * @Date：2019-09-10 10:29
 * @Description：excel文件解析类
 */
public class Analysis 

    public Analysis() 
        throw new Error("工具类不允许实例化！");
    

    /**
     * 获取并解析excel文件，返回一个二维集合
     * @param file 上传的文件
     * @return 二维集合（第一重集合为行，第二重集合为列，每一行包含该行的列集合，列集合包含该行的全部单元格的值）
     */
    public static ArrayList<ArrayList<String>> analysis(MultipartFile file) 
        ArrayList<ArrayList<String>> row = new ArrayList<>();
        //获取文件名称
        String fileName = file.getOriginalFilename();
        System.out.println(fileName);

        try 
            //获取输入流
            InputStream in = file.getInputStream();
            //判断excel版本
            Workbook workbook = null;
            if (judegExcelEdition(fileName)) 
                workbook = new XSSFWorkbook(in);
             else 
                workbook = new HSSFWorkbook(in);
            

            //获取第一张工作表
            Sheet sheet = workbook.getSheetAt(0);
            //从第二行开始获取
            for (int i = 1; i < sheet.getPhysicalNumberOfRows(); i++) 
                //循环获取工作表的每一行
                Row sheetRow = sheet.getRow(i);
                //循环获取每一列
                ArrayList<String> cell = new ArrayList<>();
                for (int j = 0; j < sheetRow.getPhysicalNumberOfCells(); j++) 
                    //将每一个单元格的值装入列集合
                    cell.add(sheetRow.getCell(j).getStringCellValue());
                
                //将装有每一列的集合装入大集合
                row.add(cell);

                //关闭资源
                workbook.close();
            
         catch (FileNotFoundException e) 
            e.printStackTrace();
            System.out.println("===================未找到文件======================");
         catch (IOException e) 
            e.printStackTrace();
            System.out.println("===================上传失败======================");
        

        return row;
    

    /**
     * 判断上传的excel文件版本（xls为2003，xlsx为2017）
     * @param fileName 文件路径
     * @return excel2007及以上版本返回true，excel2007以下版本返回false
     */
    private static boolean judegExcelEdition(String fileName)
        if (fileName.matches("^.+\\\\.(?i)(xls)$"))
            return false;
        else 
            return true;
        

    

前台和controller层代码

html：

<input type="file" multiple name="file_0" id="input-file" class="input-file">

js：

/*判断文件类型*/
function isExcel()
    var fileInput = document.getElementById("input-file").value;
    //判断文件是否为空
    if (fileInput == null || fileInput.trim() == '')
        //layer.msg('请上传文件！');
        return false;
    else 
        //判断文件是否为excel文件
        var reg =/^.*\\.(?:xls|xlsx)$/;
        if (!reg.test(fileInput))
            //layer.msg('请上传Excel文件！');
            return false;
        else 
            return true;
        
    


/*文件上传*/
function uplaodFile() 
    //当文件符合标准的时候才上传
    if (isExcel())
        //将上传组件添加进临时表单
        var form = new FormData();
        form.append("file", document.getElementById("input-file").files[0]);

        //提交表单
        $.ajax(
            url: "http://localhost:8080/upload",
            data: form,
            cache: false,
            async: false,
            type: "POST",
            dataType: 'json',
            processData: false,
            contentType: false,
            success: function (data) 
                var status = data["status"]
                if(status == "success")
                    alert("解析成功！");
                else 
                    alert("解析失败！");
                
            ,
            error: function (err) 
                console.log(err);
                alert("上传失败！");
            
        );
    

controller

package com.sanyu.tender.controller.util;

import com.sanyu.tender.util.excelAnalysis.Analysis;
import javafx.scene.control.Alert;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @Author：huang
 * @Date：2019-09-09 18:41
 * @Description：<描述>
 */
@Controller
public class ImportFileController 


    //接受文件上传
    @RequestMapping("/upload")
    @ResponseBody
    public Map uploadFile(MultipartFile file)
        Map<String,Object> map = new HashMap<>(16);
        //解析excel文件
        List<ArrayList<String>> row = Analysis.analysis(file);
        //打印信息
        for (int i = 0;i<row.size();i++)
            List<String> cell = row.get(i);
            for (int j = 0;j<cell.size();j++)
                System.out.print(cell.get(j)+" ");
            
            System.out.println();
        

        //如果要上传到服务器的话
        /*String targetUrl = "D:\\\\MYURLFILE";

        try 
            file.transferTo(new File(targetUrl, fileName));
         catch (IOException e) 
            e.printStackTrace();
            map.put("status","error");
        */

        map.put("status","success");

        return map;
    

测试

准备导入的excel文件

运行后的控制台打印的数据