Spring-boot使用application.properties解析excel文件或.csv文件

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>5.2.3</version>
</dependency>

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class ExcelReader {

    public List<List<String>> readExcel(String filePath) throws IOException {
        List<List<String>> data = new ArrayList<>();
        FileInputStream file = new FileInputStream(new File(filePath));
        Workbook workbook = new XSSFWorkbook(file);
        Sheet sheet = workbook.getSheetAt(0);
        Iterator<Row> rowIterator = sheet.iterator();

        while (rowIterator.hasNext()) {
            Row row = rowIterator.next();
            Iterator<Cell> cellIterator = row.cellIterator();
            List<String> rowData = new ArrayList<>();

            while (cellIterator.hasNext()) {
                Cell cell = cellIterator.next();
                rowData.add(cell.toString());
            }
            data.add(rowData);
        }
        workbook.close();
        file.close();
        return data;
    }
}

<dependency>
    <groupId>com.opencsv</groupId>
    <artifactId>opencsv</artifactId>
    <version>5.5.2</version>
</dependency>

import com.opencsv.CSVReader;
import com.opencsv.exceptions.CsvValidationException;

import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class CsvReader {

    public List<String[]> readCsv(String filePath) throws IOException, CsvValidationException {
        List<String[]> data = new ArrayList<>();
        try (CSVReader reader = new CSVReader(new FileReader(filePath))) {
            String[] line;
            while ((line = reader.readNext()) != null) {
                data.add(line);
            }
        }
        return data;
    }
}

import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;
import java.util.List;

@RestController
public class FileController {

    @PostMapping("/upload-excel")
    public String uploadExcel(@RequestParam("file") MultipartFile file) {
        try {
            File convFile = new File(file.getOriginalFilename());
            file.transferTo(convFile);
            ExcelReader reader = new ExcelReader();
            List<List<String>> data = reader.readExcel(convFile.getAbsolutePath());
            // 处理数据
            return "Excel文件解析成功";
        } catch (IOException e) {
            e.printStackTrace();
            return "Excel文件解析失败";
        }
    }

    @PostMapping("/upload-csv")
    public String uploadCsv(@RequestParam("file") MultipartFile file) {
        try {
            File convFile = new File(file.getOriginalFilename());
            file.transferTo(convFile);
            CsvReader reader = new CsvReader();
            List<String[]> data = reader.readCsv(convFile.getAbsolutePath());
            // 处理数据
            return "CSV文件解析成功";
        } catch (IOException | CsvValidationException e) {
            e.printStackTrace();
            return "CSV文件解析失败";
        }
    }
}