如何允许在具有只读保护的 apache POI 中创建更多行？

Question

我正在创建一个 docx 文件，该文件需要只读保护，但某些字段除外。对于这些领域，我已经解决了这个问题：

pInit.getCTP().addNewPermStart();
...
pEnd.getCTP().addNewPermEnd();

但现在我想允许向 XWPFTable 添加新行，但是这一行：

document.enforceReadonlyProtection(wordLockedPass, HashAlgorithm.sha1);

阻止此功能，我不知道该怎么办。

提前致谢！

Answer 1

如果表格位于可编辑区域（PermStart 和 PermEnd 之间），那么它将是可编辑的，包括添加行。

PermStart 和 PermEnd 可以插入到文档正文中使用

// CTPermStart marking the start of unprotected range  
CTPermStart ctPermStart = document.getDocument().getBody().addNewPermStart();
ctPermStart.setEdGrp(STEdGrp.EVERYONE);
ctPermStart.setId("123456"); //note the Id

和

// CTPerm marking the end of unprotected range  
document.getDocument().getBody().addNewPermEnd().setId("123456"); //note the same Id

PermStart 和 PermEnd 之间的所有正文元素都可以在受保护的文档中进行编辑。对于 PermStart 和 PermEnd 之间的表也是如此。

如果只有部分表格可以编辑，那么PermStart 和PermEnd 也可以插入表格中。例如，如果只有表的最后一行是可编辑的，而新行是可插入的，那么：

XWPFTable table = ...;
...  
// CTPermStart marking the start of unprotected range  
ctPermStart = table.getCTTbl().addNewPermStart();
ctPermStart.setEdGrp(STEdGrp.EVERYONE);
ctPermStart.setId("789012"); //note the Id

XWPFTableRow row = table.createRow();

// CTPerm marking the end of unprotected range  
table.getCTTbl().addNewPermEnd().setId("789012"); //note the same Id
...

完整示例：

import java.io.*;

import org.apache.poi.wp.usermodel.*;

import org.apache.poi.xwpf.usermodel.*;

import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTPermStart;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.STEdGrp;

public class CreateWordPartialProtected {

 public static void main(String[] args) throws Exception {

  XWPFDocument document= new XWPFDocument();

  // create header
  XWPFHeader header = document.createHeader(HeaderFooterType.DEFAULT);

  XWPFParagraph paragraph = header.createParagraph();
  paragraph.setAlignment(ParagraphAlignment.LEFT);

  XWPFRun run = paragraph.createRun();  
  run.setText("The page header:");

  // create footer
  XWPFFooter footer = document.createFooter(HeaderFooterType.DEFAULT);

  paragraph = footer.createParagraph();
  paragraph.setAlignment(ParagraphAlignment.CENTER);

  run = paragraph.createRun();  
  run.setText("Page ");
  paragraph.getCTP().addNewFldSimple().setInstr("PAGE \\* MERGEFORMAT");
  run = paragraph.createRun();  
  run.setText(" of ");
  paragraph.getCTP().addNewFldSimple().setInstr("NUMPAGES \\* MERGEFORMAT");

  // the body content
  paragraph = document.createParagraph();
  run=paragraph.createRun();  
  run.setText("This body part is protected.");
  paragraph = document.createParagraph();

  // CTPermStart marking the start of unprotected range  
  CTPermStart ctPermStart = document.getDocument().getBody().addNewPermStart();
  ctPermStart.setEdGrp(STEdGrp.EVERYONE);
  ctPermStart.setId("123456"); //note the Id

  paragraph = document.createParagraph();
  run=paragraph.createRun();  
  run.setText("This body part is not protected.");

  // CTPerm marking the end of unprotected range  
  document.getDocument().getBody().addNewPermEnd().setId("123456"); //note the same Id

  paragraph = document.createParagraph();

  paragraph = document.createParagraph();
  run=paragraph.createRun();  
  run.setText("This body part is protected again.");
  paragraph = document.createParagraph();
  

  XWPFTable table = document.createTable(1, 3);
  table.setWidth("100%");
  table.getRow(0).getCell(0).setText("Column 1");
  table.getRow(0).getCell(1).setText("Column 2");
  table.getRow(0).getCell(2).setText("Column 3");
  
  // CTPermStart marking the start of unprotected range  
  ctPermStart = table.getCTTbl().addNewPermStart();
  ctPermStart.setEdGrp(STEdGrp.EVERYONE);
  ctPermStart.setId("789012"); //note the Id
  
  XWPFTableRow row = table.createRow();

  // CTPerm marking the end of unprotected range  
  table.getCTTbl().addNewPermEnd().setId("789012"); //note the same Id
  
  paragraph = document.createParagraph();

  paragraph = document.createParagraph();
  run=paragraph.createRun();  
  run.setText("This body part is protected again.");
  paragraph = document.createParagraph();

  document.enforceReadonlyProtection("passwd", org.apache.poi.poifs.crypt.HashAlgorithm.sha1); //enforce readonly protection

  FileOutputStream out = new FileOutputStream("CreateWordPartialProtected.docx");
  document.write(out);
  out.close();
  document.close();

 }
}

此代码使用apache poi 5.2.2 进行测试和工作。它生成具有两个可编辑区域的 Word 文档。第二个是在标题行之后的表格中。因此，该标题行受到保护。最后一行位于该可编辑区域中。所以这一行是可编辑的，并且可以在该行的上方和下方插入新的行。