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