045 Java中数据导入到excel

　　程序有些参考，不过重要的是思路。

1.导入依赖

<dependencies>
        <!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>4.0.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>4.0.1</version>
        </dependency>

    </dependencies>

3.程序

package excel;

import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

public class ExportExcelData {
    public static void main(String[] args) throws IOException {
        SimpleDateFormat dateFormat = new SimpleDateFormat("YYYYMMDDhhmmss");
        String now = dateFormat.format(new Date());
        //导出文件路径
        String basePath = "D:/";
        //文件名
        String exportFileName = "数据_"+now+".xlsx";
        String[] cellTitle = {"序号","姓名","学号","性别","入学日期"};
        //需要导出的数据
        List<String[]> dataList = new ArrayList<String[]>();
        dataList.add(new String[]{"东邪","17232401001","男","2015年9月"});
        dataList.add(new String[]{"西毒","17232401002","女","2016年9月"});
        dataList.add(new String[]{"南帝","17232401003","男","2017年9月"});
        dataList.add(new String[]{"北丐","17232401004","男","2015年9月"});
        dataList.add(new String[]{"中神通","17232401005","女","2017年9月"});
        // 声明一个工作薄
        XSSFWorkbook workBook = null;
        workBook = new XSSFWorkbook();
        // 生成一个表格
        XSSFSheet sheet = workBook.createSheet();
        workBook.setSheetName(0,"学生信息");
        // 创建表格标题行 第一行
        XSSFRow titleRow = sheet.createRow(0);
        for(int i=0;i<cellTitle.length;i++){
            titleRow.createCell(i).setCellValue(cellTitle[i]);
        }
        //插入需导出的数据
        for(int i=0;i<dataList.size();i++){
            XSSFRow row = sheet.createRow(i+1);
            row.createCell(0).setCellValue(i+1);
            row.createCell(1).setCellValue(dataList.get(i)[0]);
            row.createCell(2).setCellValue(dataList.get(i)[1]);
            row.createCell(3).setCellValue(dataList.get(i)[2]);
            row.createCell(4).setCellValue(dataList.get(i)[3]);
        }
        File  file = new File(basePath+exportFileName);
        //文件输出流
        FileOutputStream outStream = new FileOutputStream(file);
        workBook.write(outStream);
        outStream.flush();
        outStream.close();
        System.out.println("导出2007文件成功！文件导出路径：--"+basePath+exportFileName);
    }
}

4.结果