1.導包

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>3.14</version>
</dependency>

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

2.讀取

XSSFWorkbook workBook = new XSSFWorkbook(...);

得到XSSFWorkbook物件後就能獲取Sheet以及Row.Cell等資訊。

3.寫入