Java读取excel表格特定列并导出txt文件
时间: 2024-12-16 07:24:25 浏览: 25
在Java中,可以使用Apache POI库来读取Excel文件,并提取特定列的数据。以下是一个简单的步骤指南:
1. **添加依赖**:
首先需要在项目中引入Apache POI的`poi`和`poi-ooxml`组件。如果你使用的是Maven,可以在pom.xml文件中添加以下依赖:
```xml
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>4.1.2</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>4.1.2</version>
</dependency>
```
2. **创建读取Excel的工作**:
使用`XSSFWorkbook`加载Excel文件,然后通过`Sheet`对象获取工作表,最后通过`Row`对象遍历行获取指定列的数据。
```java
import org.apache.poi.ss.usermodel.*;
public void readExcelColumn(String filePath, int targetColumnIndex) {
try (FileInputStream fis = new FileInputStream(filePath);
Workbook workbook = new XSSFWorkbook(fis)) {
Sheet sheet = workbook.getSheetAt(0); // 假设第一个工作表
for (Row row : sheet) {
Cell cell = row.getCell(targetColumnIndex);
if (cell != null) {
String data = cell.getStringCellValue();
// 对数据进行处理,如打印或保存到其他地方
System.out.println(data);
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
```
3. **导出TXT文件**:
将读取到的数据写入到TXT文件中。这里假设我们已经有了一个`Writer`对象来写入文本。
```java
try (PrintWriter writer = new PrintWriter("output.txt", "UTF-8")) {
for (String line : dataList) { // dataList是你从Excel读取并处理后的数据
writer.println(line);
}
writer.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
}
```
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