java 如何解析excel中保存的文件
时间: 2024-05-01 08:16:50 浏览: 9
Java可以使用Apache POI库来解析Excel文件。以下是基本的步骤:
1. 添加POI库到项目中,可以通过Maven或手动下载和导入jar包的方式。具体可以参考官方文档:https://poi.apache.org/download.html
2. 通过输入流读取Excel文件,创建一个Workbook对象:
```java
FileInputStream inputStream = new FileInputStream(new File("path/to/excel/file.xlsx"));
Workbook workbook = new XSSFWorkbook(inputStream); // 或者 HSSFWorkbook(对应xls格式的文件)
```
3. 获取要解析的Sheet:
```java
Sheet sheet = workbook.getSheetAt(0); // 获取第一个Sheet
```
4. 遍历Sheet中的每一行和每一列,读取单元格的数据:
```java
// 遍历行
for (Row row : sheet) {
// 遍历列
for (Cell cell : row) {
switch (cell.getCellType()) {
case STRING:
System.out.print(cell.getStringCellValue() + "\t");
break;
case NUMERIC:
System.out.print(cell.getNumericCellValue() + "\t");
break;
case BOOLEAN:
System.out.print(cell.getBooleanCellValue() + "\t");
break;
default:
System.out.print("\t");
}
}
System.out.println();
}
```
5. 关闭输入流和Workbook对象:
```java
inputStream.close();
workbook.close();
```
完整的示例代码:
```java
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class ExcelParser {
public static void main(String[] args) throws IOException {
FileInputStream inputStream = new FileInputStream(new File("path/to/excel/file.xlsx"));
Workbook workbook = new XSSFWorkbook(inputStream);
Sheet sheet = workbook.getSheetAt(0);
for (Row row : sheet) {
for (Cell cell : row) {
switch (cell.getCellType()) {
case STRING:
System.out.print(cell.getStringCellValue() + "\t");
break;
case NUMERIC:
System.out.print(cell.getNumericCellValue() + "\t");
break;
case BOOLEAN:
System.out.print(cell.getBooleanCellValue() + "\t");
break;
default:
System.out.print("\t");
}
}
System.out.println();
}
inputStream.close();
workbook.close();
}
}
```