java使用poi在excel中寫入數據入門篇

第一步：映入POI包

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>3.17</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>3.17</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml-schemas</artifactId>
    <version>3.17</version>
</dependency>

第二步：編寫程序

1、創建POI Excel對象

Workbook workbook=new  XSSFWorkbook();

2、創建表單名稱

Sheet sheet = workbook.createSheet("test");

3、創建文件流

FileOutputStream pis = null;
try {
    //3、創建文件流，寫入文件路徑
    pis = new FileOutputStream("E:\\azb\\test.xlsx");

} catch (FileNotFoundException e) {
    e.printStackTrace();
}

4.寫入文件

workbook.write(pis);
5、關閉文件流
pis.close();