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

 1 <dependencies>
 2         <!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
 3         <dependency>
 4             <groupId>org.apache.poi</groupId>
 5             <artifactId>poi</artifactId>
 6             <version>4.0.1</version>
 7         </dependency>
 8         <!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->
 9         <dependency>
10             <groupId>org.apache.poi</groupId>
11             <artifactId>poi-ooxml</artifactId>
12             <version>4.0.1</version>
13         </dependency>
14 
15     </dependencies>

3.程序

 1 package excel;
 2 
 3 import org.apache.poi.xssf.usermodel.XSSFRow;
 4 import org.apache.poi.xssf.usermodel.XSSFSheet;
 5 import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 6 
 7 import java.io.File;
 8 import java.io.FileOutputStream;
 9 import java.io.IOException;
10 import java.text.SimpleDateFormat;
11 import java.util.ArrayList;
12 import java.util.Date;
13 import java.util.List;
14 
15 public class ExportExcelData {
16     public static void main(String[] args) throws IOException {
17         SimpleDateFormat dateFormat = new SimpleDateFormat("YYYYMMDDhhmmss");
18         String now = dateFormat.format(new Date());
19         //导出文件路径
20         String basePath = "D:/";
21         //文件名
22         String exportFileName = "数据_"+now+".xlsx";
23         String[] cellTitle = {"序号","姓名","学号","性别","入学日期"};
24         //需要导出的数据
25         List<String[]> dataList = new ArrayList<String[]>();
26         dataList.add(new String[]{"东邪","17232401001","男","2015年9月"});
27         dataList.add(new String[]{"西毒","17232401002","女","2016年9月"});
28         dataList.add(new String[]{"南帝","17232401003","男","2017年9月"});
29         dataList.add(new String[]{"北丐","17232401004","男","2015年9月"});
30         dataList.add(new String[]{"中神通","17232401005","女","2017年9月"});
31         // 声明一个工作薄
32         XSSFWorkbook workBook = null;
33         workBook = new XSSFWorkbook();
34         // 生成一个表格
35         XSSFSheet sheet = workBook.createSheet();
36         workBook.setSheetName(0,"学生信息");
37         // 创建表格标题行 第一行
38         XSSFRow titleRow = sheet.createRow(0);
39         for(int i=0;i<cellTitle.length;i++){
40             titleRow.createCell(i).setCellValue(cellTitle[i]);
41         }
42         //插入需导出的数据
43         for(int i=0;i<dataList.size();i++){
44             XSSFRow row = sheet.createRow(i+1);
45             row.createCell(0).setCellValue(i+1);
46             row.createCell(1).setCellValue(dataList.get(i)[0]);
47             row.createCell(2).setCellValue(dataList.get(i)[1]);
48             row.createCell(3).setCellValue(dataList.get(i)[2]);
49             row.createCell(4).setCellValue(dataList.get(i)[3]);
50         }
51         File  file = new File(basePath+exportFileName);
52         //文件输出流
53         FileOutputStream outStream = new FileOutputStream(file);
54         workBook.write(outStream);
55         outStream.flush();
56         outStream.close();
57         System.out.println("导出2007文件成功！文件导出路径：--"+basePath+exportFileName);
58     }
59 }

4.结果