easyexcel xml
时间: 2023-10-20 10:34:58 浏览: 57
EasyExcel 是一个 Java 高性能 Excel 解析、导入、导出工具,可以处理 Excel 文件的读取、写入、转换等操作。它支持多种数据源的导入导出,包括 Excel 文件、CSV 文件、数据库等。
关于 EasyExcel 的使用,其中一个常见的需求是将 Excel 数据导出为 XML 格式。在 EasyExcel 中,可以通过自定义 WriteHandler 来实现将 Excel 数据转换为 XML 格式。下面是一个示例代码:
```java
public class XmlWriteHandler implements WriteHandler {
private XMLStreamWriter xmlStreamWriter;
public void beforeSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) throws Exception {
OutputStream outputStream = writeWorkbookHolder.getOutputStream();
XMLOutputFactory xmlOutputFactory = XMLOutputFactory.newInstance();
xmlStreamWriter = xmlOutputFactory.createXMLStreamWriter(outputStream, "UTF-8");
xmlStreamWriter.writeStartDocument("UTF-8", "1.0");
xmlStreamWriter.writeStartElement("root");
}
public void afterSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) throws Exception {
}
public void afterWorkbookCreate(WriteWorkbookHolder writeWorkbookHolder) throws Exception {
xmlStreamWriter.writeEndElement();
xmlStreamWriter.writeEndDocument();
xmlStreamWriter.flush();
xmlStreamWriter.close();
}
public void beforeRowCreate(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, Integer rowIndex, Integer relativeRowIndex, Boolean isHead) throws Exception {
if (!isHead && rowIndex != null) {
xmlStreamWriter.writeStartElement("row");
xmlStreamWriter.writeAttribute("index", String.valueOf(rowIndex));
}
}
public void afterRowCreate(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, Integer rowIndex, Integer relativeRowIndex, Boolean isHead) throws Exception {
if (!isHead && rowIndex != null) {
xmlStreamWriter.writeEndElement();
}
}
public void afterCellCreate(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, CellData cellData, Cell cell, HeadData headData, Integer relativeRowIndex, Boolean isHead) throws Exception {
if (!isHead && cellData != null && cell != null) {
xmlStreamWriter.writeStartElement("cell");
xmlStreamWriter.writeAttribute("index", String.valueOf(cell.getColumnIndex()));
xmlStreamWriter.writeCharacters(cellData.getStringValue());
xmlStreamWriter.writeEndElement();
}
}
// 其他接口方法省略...
}
```
使用时,可以通过 EasyExcel 的 WriteSheetBuilder 中的 writeHandler 方法来设置自定义的 WriteHandler。示例代码如下:
```java
public class ExcelToXmlConverter {
public static void main(String[] args) {
String excelFilePath = "path/to/excel.xls";
String xmlFilePath = "path/to/output.xml";
try {
OutputStream outputStream = new FileOutputStream(xmlFilePath);
ExcelWriter excelWriter = EasyExcel.write(outputStream)
.registerWriteHandler(new XmlWriteHandler())
.build();
ReadSheet readSheet = EasyExcel.read(excelFilePath).build().oneSheet();
excelWriter.write(readSheet);
excelWriter.finish();
} catch (Exception e) {
e.printStackTrace();
}
}
}
```
以上代码演示了如何使用 EasyExcel 将 Excel 数据导出为 XML 格式。你可以根据实际需求,自定义 XmlWriteHandler 中的写入逻辑,实现更加复杂的转换操作。
希望能帮到你!如果还有其他问题,请继续提问。