嵌套表格，即在一个大的表格单元格中再嵌进去一个或几个小的表格，使表格内容布局合理。以下示例中，将介绍通过Spire.Doc for Java 在Word表格中添加嵌套表格的方法。

import com.spire.doc.*;
import com.spire.doc.documents.HorizontalAlignment;
import com.spire.doc.documents.RowAlignment;
import com.spire.doc.documents.TableRowHeightType;
import com.spire.doc.documents.VerticalAlignment;
import com.spire.doc.fields.TextRange;

public class NestedTable {
    public static void main(String[]args){
        //加载测试文档
        Document doc = new Document("sample.docx");
        Section sec = doc.getSections().get(0);

        //获取指定表格中的单元格，并设置行高、列宽
        Table table = sec.getTables().get(0);
        table.getRows().get(0).setHeight(130);
        table.getRows().get(0).getCells().get(0).setWidth(400);

        //添加嵌套表格到指定单元格
        Table nestedtable = table.get(0,0).addTable(true);
        nestedtable.getTableFormat().setHorizontalAlignment(RowAlignment.Center);//设置嵌套表格在单元格中的对齐方式
        nestedtable.resetCells(4,4);//指定嵌套表格行数、列数
        nestedtable.autoFit(AutoFitBehaviorType.Auto_Fit_To_Contents);//设置嵌套表格内容自适应类型
        //声明表格数组内容
        String[][] data ={
                new String[]{"编号","产品名","最新版本","发布日期",},
                new String[]{"1","Spire.Office for Java","V2.2.0","2019-06-21"},
                new String[]{"2","Spire.Doc for Java","V2.6.1","2019-06-18"},
                new String[]{"3","Spire.PDF for Java","V2.6.2","2019-06-14"},
        };
        //填充数组内容到嵌套表格
        for (int i = 0; i < data.length; i++) {
            TableRow dataRow = nestedtable.getRows().get(i);
            dataRow.getCells().get(i).setWidth(100);
            dataRow.setHeight(18);
            dataRow.setHeightType(TableRowHeightType.Exactly);
            for (int j = 0; j < data[i].length; j++) {
                dataRow.getCells().get(j).getCellFormat().setVerticalAlignment(VerticalAlignment.Middle);
                TextRange range = dataRow.getCells().get(j).addParagraph().appendText(data[i][j]);
                range.getCharacterFormat().setFontName("楷体");
                range.getCharacterFormat().setFontSize(11f);
                range.getOwnerParagraph().getFormat().setHorizontalAlignment(HorizontalAlignment.Center);
            }
        }

        //保存文档
        doc.saveToFile("nesedtable.docx",FileFormat.Docx_2010);
    }
}

嵌套表格添加效果：