JAVA 将EXCEL转为PDF
时间: 2024-10-28 16:11:02 浏览: 61
在Java中将Excel文件转换成PDF,通常需要借助一些第三方库,如Apache POI处理Excel文件,iText或 Flying Saucer处理PDF生成。以下是基本步骤:
1. **引入依赖**:
- 首先,你需要在项目中添加相应的库依赖。例如,对于Apache POI用于读取Excel,可以在pom.xml中添加以下依赖:
```xml
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>最新版本号</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>最新版本号</version>
</dependency>
```
对于iText或Flying Saucer,可以参照类似的方式。
2. **读取Excel**:
使用`XSSFWorkbook`或`XSSFWorkbook`打开Excel文件,并选择工作表(Sheet):
```java
Workbook workbook = new XSSFWorkbook(new FileInputStream("input.xlsx"));
Sheet sheet = workbook.getSheetAt(0); // 获取第一个工作表
```
3. **创建PDF**:
使用iText的`Document`类来创建一个新的PDF文档,然后将内容添加到PDF中。例如,你可以遍历单元格并将其文本复制到PDF:
```java
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream("output.pdf"));
document.open();
PdfPTable table = new PdfPTable(sheet.getLastRowNum() + 1);
for (int row = 0; row <= sheet.getLastRowNum(); row++) {
Row excelRow = sheet.getRow(row);
PdfPCell cell = new PdfPCell(new Paragraph(excelRow.getCell(0).getStringCellValue()));
table.addCell(cell);
// 添加更多列...
}
document.add(table);
```
4. **关闭资源**:
最后,记得关闭所有打开的资源,如`workbook`, `document`等:
```java
workbook.close();
document.close();
```
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