首先创建一个具有较少行和/或列的表格，然后拆分单个单元格绝对不是要走的路。而是创建具有尽可能多的行和/或列的表，以满足最大需要。合并比拆分更简单。
根据您的屏幕截图，该表需要 4 行和 9 列。
以下完整示例准确地创建了屏幕截图表：
import java.io.File;
import java.io.FileOutputStream;
import java.math.BigInteger;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFTable;
import org.apache.poi.xwpf.usermodel.XWPFTableCell;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTcPr;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTblWidth;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.STTblWidth;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTVMerge;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.STMerge;
public class CreateWordTableMerge3 {
static void mergeCellVertically(XWPFTable table, int col, int fromRow, int toRow) {
for(int rowIndex = fromRow; rowIndex <= toRow; rowIndex++) {
XWPFTableCell cell = table.getRow(rowIndex).getCell(col);
CTVMerge vmerge = CTVMerge.Factory.newInstance();
if(rowIndex == fromRow){
// The first merged cell is set with RESTART merge value
vmerge.setVal(STMerge.RESTART);
} else {
// Cells which join (merge) the first one, are set with CONTINUE
vmerge.setVal(STMerge.CONTINUE);
// and the content should be removed
for (int i = cell.getParagraphs().size(); i > 0; i--) {
cell.removeParagraph(0);
}
cell.addParagraph();
}
// Try getting the TcPr. Not simply setting an new one every time.
CTTcPr tcPr = cell.getCTTc().getTcPr();
if (tcPr == null) tcPr = cell.getCTTc().addNewTcPr();
tcPr.setVMerge(vmerge);
}
}
//merging horizontally by setting grid span instead of using CTHMerge
static void mergeCellHorizontally(XWPFTable table, int row, int fromCol, int toCol) {
XWPFTableCell cell = table.getRow(row).getCell(fromCol);
// Try getting the TcPr. Not simply setting an new one every time.
CTTcPr tcPr = cell.getCTTc().getTcPr();
if (tcPr == null) tcPr = cell.getCTTc().addNewTcPr();
// The first merged cell has grid span property set
if (tcPr.isSetGridSpan()) {
tcPr.getGridSpan().setVal(BigInteger.valueOf(toCol-fromCol+1));
} else {
tcPr.addNewGridSpan().setVal(BigInteger.valueOf(toCol-fromCol+1));
}
// Cells which join (merge) the first one, must be removed
for(int colIndex = toCol; colIndex > fromCol; colIndex--) {
table.getRow(row).getCtRow().removeTc(colIndex);
table.getRow(row).removeCell(colIndex);
}
}
static void setColumnWidth(XWPFTable table, int row, int col, int width) {
CTTblWidth tblWidth = CTTblWidth.Factory.newInstance();
tblWidth.setW(BigInteger.valueOf(width));
tblWidth.setType(STTblWidth.DXA);
CTTcPr tcPr = table.getRow(row).getCell(col).getCTTc().getTcPr();
if (tcPr != null) {
tcPr.setTcW(tblWidth);
} else {
tcPr = CTTcPr.Factory.newInstance();
tcPr.setTcW(tblWidth);
table.getRow(row).getCell(col).getCTTc().setTcPr(tcPr);
}
}
public static void main(String[] args) throws Exception {
XWPFDocument document= new XWPFDocument();
XWPFParagraph paragraph = document.createParagraph();
XWPFRun run=paragraph.createRun();
run.setText("The table:");
//create table
//4 rows 9 columns
XWPFTable table = document.createTable(4,9);
for (int row = 0; row < 4; row++) {
for (int col = 0; col < 9; col++) {
//table.getRow(row).getCell(col).setText("row " + row + ", col " + col);
if (row < 3) table.getRow(row).getCell(col).setColor("D9D9D9");
}
}
//defining the column widths for the grid
//column width values are in unit twentieths of a point (1/1440 of an inch)
int defaultColWidth = 1*1440*6/9; // 9 columns fits to 6 inches
int[] colunmWidths = new int[] {
defaultColWidth, defaultColWidth, defaultColWidth, defaultColWidth,
defaultColWidth, defaultColWidth, defaultColWidth, defaultColWidth, defaultColWidth
};
//create CTTblGrid for this table with widths of the 8 columns.
//necessary for Libreoffice/Openoffice to accept the column widths.
//first column
table.getCTTbl().addNewTblGrid().addNewGridCol().setW(BigInteger.valueOf(colunmWidths[0]));
//other columns
for (int col = 1; col < colunmWidths.length; col++) {
table.getCTTbl().getTblGrid().addNewGridCol().setW(BigInteger.valueOf(colunmWidths[col]));
}
//using the merge methods and setting the column widths
//horizontally merge all columns in first row
mergeCellHorizontally(table, 0, 0, 8);
setColumnWidth(table, 0, 0, colunmWidths[0]+colunmWidths[1]+colunmWidths[2]+colunmWidths[3]
+colunmWidths[4]+colunmWidths[5]+colunmWidths[6]+colunmWidths[7]+colunmWidths[8]);
//horizontally merge last two columns in second row
mergeCellHorizontally(table, 1, 7, 8);
setColumnWidth(table, 1, 7, colunmWidths[7]+colunmWidths[7]);
//vertically merge row 2 and 3 in column 1 to 7
for (int c = 0; c < 7; c++) {
mergeCellVertically(table, c, 1, 2);
}
paragraph = document.createParagraph();
FileOutputStream out = new FileOutputStream("create_table.docx");
document.write(out);
out.close();
}
}
结果：
