生成java excel导入导出
时间: 2023-09-02 20:09:35 浏览: 49
生成Java Excel导入导出,可以使用Apache POI(Poor Obfuscation Implementation)库。这个库提供了Java操作Excel的API,可以读取和写入Excel文件。
下面是生成Java Excel导入导出的一些示例代码:
1. 创建Excel文件
```
Workbook workbook = new XSSFWorkbook();
Sheet sheet = workbook.createSheet("Sheet1");
Row row = sheet.createRow(0);
Cell cell = row.createCell(0);
cell.setCellValue("Hello, World!");
FileOutputStream outputStream = new FileOutputStream("test.xlsx");
workbook.write(outputStream);
workbook.close();
```
2. 读取Excel文件
```
FileInputStream inputStream = new FileInputStream(new File("test.xlsx"));
Workbook workbook = new XSSFWorkbook(inputStream);
Sheet sheet = workbook.getSheetAt(0);
Iterator<Row> rowIterator = sheet.iterator();
while (rowIterator.hasNext()) {
Row row = rowIterator.next();
Iterator<Cell> cellIterator = row.iterator();
while (cellIterator.hasNext()) {
Cell cell = cellIterator.next();
System.out.print(cell.getStringCellValue() + "\t");
}
}
inputStream.close();
workbook.close();
```
3. 写入Excel文件
```
FileInputStream inputStream = new FileInputStream(new File("test.xlsx"));
Workbook workbook = new XSSFWorkbook(inputStream);
Sheet sheet = workbook.getSheetAt(0);
Row row = sheet.createRow(1);
Cell cell = row.createCell(0);
cell.setCellValue("Hello, POI!");
FileOutputStream outputStream = new FileOutputStream("test.xlsx");
workbook.write(outputStream);
inputStream.close();
outputStream.close();
workbook.close();
```
这些代码可以生成一个Excel文件,读取Excel文件内容,并向Excel文件写入数据。你可以根据自己的需求,使用这些代码来生成Java Excel导入导出功能。