讲解"Java根据模板导出Excel报表并复制模板生成多个Sheet页"的攻略,具体步骤如下:
步骤一:引入依赖
首先需要引入以下依赖:
<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>
步骤二:读取模板文件
使用POI读取模板文件,示例代码如下:
FileInputStream inputStream = new FileInputStream(new File("template.xlsx"));
Workbook workbook = new XSSFWorkbook(inputStream);
步骤三:复制Sheet页
使用POI的Workbook的createSheet方法复制Sheet页,示例代码如下:
// 复制第一个Sheet页
Sheet sheet1 = workbook.cloneSheet(0);
workbook.setSheetName(workbook.getSheetIndex(sheet1), "Sheet1 Copy");
// 复制第二个Sheet页
Sheet sheet2 = workbook.cloneSheet(1);
workbook.setSheetName(workbook.getSheetIndex(sheet2), "Sheet2 Copy");
步骤四:填充数据
使用POI向Sheet页写入数据,示例代码如下:
// 向Sheet1中写入数据
Sheet sheet1 = workbook.getSheet("Sheet1 Copy");
Row row1 = sheet1.getRow(0);
Cell cell1 = row1.getCell(0);
cell1.setCellValue("Sheet1 Data");
// 向Sheet2中写入数据
Sheet sheet2 = workbook.getSheet("Sheet2 Copy");
Row row2 = sheet2.getRow(0);
Cell cell2 = row2.getCell(0);
cell2.setCellValue("Sheet2 Data");
步骤五:导出Excel
使用POI将Workbook导出为Excel文件,示例代码如下:
FileOutputStream outputStream = new FileOutputStream("output.xlsx");
workbook.write(outputStream);
outputStream.close();
以上就是Java根据模板导出Excel报表并复制模板生成多个Sheet页的完整攻略。下面给出两个示例:
示例一:根据模板复制Sheet页,并向Sheet页填充数据
假设模板中有两个Sheet页,名称分别为Sheet1和Sheet2,现在需要复制这两个Sheet页,然后向Sheet页中填充数据。示例代码如下:
public static void main(String[] args) throws IOException {
FileInputStream inputStream = new FileInputStream(new File("template.xlsx"));
Workbook workbook = new XSSFWorkbook(inputStream);
// 复制Sheet1
Sheet sheet1Copy = workbook.cloneSheet(0);
workbook.setSheetName(workbook.getSheetIndex(sheet1Copy), "Sheet1 Copy");
// 向Sheet1中填充数据
sheet1Copy.getRow(0).getCell(0).setCellValue("Sheet1 Data");
// 复制Sheet2
Sheet sheet2Copy = workbook.cloneSheet(1);
workbook.setSheetName(workbook.getSheetIndex(sheet2Copy), "Sheet2 Copy");
// 向Sheet2中填充数据
sheet2Copy.getRow(0).getCell(0).setCellValue("Sheet2 Data");
FileOutputStream outputStream = new FileOutputStream("output.xlsx");
workbook.write(outputStream);
outputStream.close();
}
示例二:根据循环生成多个Sheet页,并向Sheet页填充数据
假设需要根据循环生成多个Sheet页,每个Sheet页中填充的数据不同。示例代码如下:
public static void main(String[] args) throws IOException {
FileInputStream inputStream = new FileInputStream(new File("template.xlsx"));
Workbook workbook = new XSSFWorkbook(inputStream);
// 数据源
List<String> dataList = Arrays.asList("Sheet1 Data1", "Sheet1 Data2", "Sheet1 Data3");
// 循环生成Sheet页,并向每个Sheet页填充不同的数据
for (int i = 0; i < dataList.size(); i++) {
Sheet sheet = workbook.createSheet("Sheet" + (i + 1));
sheet.getRow(0).getCell(0).setCellValue(dataList.get(i));
}
FileOutputStream outputStream = new FileOutputStream("output.xlsx");
workbook.write(outputStream);
outputStream.close();
}
本站文章如无特殊说明,均为本站原创,如若转载,请注明出处:Java根据模板导出Excel报表并复制模板生成多个Sheet页 - Python技术站