使用Apache POI添加自定义XML部件
使用Apache POI将自定义XML Part添加到XLSX文件的正确方法是什么？
我已经尝试使用下面的代码创build包部分并添加关系到工作簿，但是我新添加的部分被添加为空白文件，因为工作簿清除了POIXMLDocument#prepareForCommit()包部件。
import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import org.apache.poi.POIXMLDocumentPart; import org.apache.poi.openxml4j.exceptions.InvalidFormatException; import org.apache.poi.openxml4j.opc.*; import org.apache.poi.xssf.usermodel.XSSFWorkbook; public class AddCustomXmlPart { public static void main(String[] args) { String outputFileName = System.getProperty("user.home") + "/Documents/test-updated.xlsx"; try { XSSFWorkbook workbook = new XSSFWorkbook(); workbook.createSheet("Test"); addCustomXmlPart(workbook); workbook.write(new FileOutputStream(outputFileName)); } catch (IOException e) { e.printStackTrace(); } catch (InvalidFormatException e) { e.printStackTrace(); } } private static void addCustomXmlPart(XSSFWorkbook workbook) throws IOException, InvalidFormatException { final OPCPackage opcPackage = workbook.getPackage(); final PackagePartName partName = PackagingURIHelper.createPartName("/customXml/item1.xml"); final PackagePart part = opcPackage.createPart(partName, ContentTypes.PLAIN_OLD_XML); final OutputStream outputStream = part.getOutputStream(); outputStream.write("<test>A</test>".getBytes()); outputStream.close(); final PackageRelationship packageRelationship = part.addRelationship( partName, TargetMode.INTERNAL, PackageRelationshipTypes.CUSTOM_XML); final POIXMLDocumentPart documentPart = new POIXMLDocumentPart(workbook, part, packageRelationship); workbook.addRelation(packageRelationship.getId(), documentPart); } }
正如Gagravarr所build议的那样：
import java.io.*; import org.apache.poi.openxml4j.exceptions.InvalidFormatException; import org.apache.poi.openxml4j.opc.*; import org.apache.poi.xssf.usermodel.XSSFWorkbook; public class AddCustomXmlUsingOpc { public static final String PARENT_PATH = System.getProperty("user.home") + "/Documents/"; public static void main(String[] args) { String outputFileName1 = PARENT_PATH + "01.xlsx"; String outputFileName2 = PARENT_PATH + "02.xlsx"; try { XSSFWorkbook workbook = new XSSFWorkbook(); workbook.createSheet("Test"); workbook.write(new FileOutputStream(outputFileName1)); final OPCPackage opcPackage = OPCPackage.open(new File(outputFileName1)); addCustomXmlPart(opcPackage); opcPackage.save(new File(outputFileName2)); } catch (IOException e) { e.printStackTrace(); } catch (InvalidFormatException e) { e.printStackTrace(); } } private static void addCustomXmlPart(OPCPackage opcPackage) throws IOException, InvalidFormatException { final PackagePartName partName = PackagingURIHelper.createPartName("/customXml/item1.xml"); final PackagePart part = opcPackage.createPart(partName, ContentTypes.PLAIN_OLD_XML); final OutputStream outputStream = part.getOutputStream(); outputStream.write("<test>A</test>".getBytes()); outputStream.close(); part.addRelationship(partName, TargetMode.INTERNAL, PackageRelationshipTypes.CUSTOM_XML); final PackagePartName workbookName = PackagingURIHelper.createPartName("/xl/workbook.xml"); final PackagePart workbookPart = opcPackage.getPart(workbookName); workbookPart.addRelationship(partName, TargetMode.INTERNAL, PackageRelationshipTypes.CUSTOM_XML); } }