POI或jxl导出组架构图

Question

咨询下，如何java用poi,导出树状结构组织架构图,可以绘肘线，谢谢。

Answer 1

该回答引用GPTᴼᴾᴱᴺᴬᴵ
使用POI或JXL实现导出组织架构图可以分为以下步骤：

构造组织架构数据模型，以便能够在Excel中正确显示组织架构图。可以使用Java中的对象、集合等来表示组织结构的层次关系。

使用POI或JXL创建Excel文档，并设置相关的样式、格式等，以便在文档中正确显示组织架构图。

将组织架构数据模型渲染成Excel中的组织架构图形，并将其插入到Excel文档中。可以使用POI或JXL中提供的API来实现此操作。

以下是一个简单的示例代码，演示如何使用POI创建一个组织架构图：

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.FileOutputStream;
import java.io.IOException;

public class OrganizationChartExample {

    public static void main(String[] args) throws IOException {
        // 构造组织架构数据模型
        OrganizationChartNode root = new OrganizationChartNode("CEO", null);
        OrganizationChartNode department1 = new OrganizationChartNode("Department 1", root);
        OrganizationChartNode department2 = new OrganizationChartNode("Department 2", root);
        OrganizationChartNode team1 = new OrganizationChartNode("Team 1", department1);
        OrganizationChartNode team2 = new OrganizationChartNode("Team 2", department1);
        OrganizationChartNode team3 = new OrganizationChartNode("Team 3", department2);

        // 创建Excel文档
        Workbook workbook = new XSSFWorkbook();
        Sheet sheet = workbook.createSheet("Organization Chart");

        // 创建样式
        CellStyle style = workbook.createCellStyle();
        style.setBorderBottom(BorderStyle.THIN);
        style.setBorderLeft(BorderStyle.THIN);
        style.setBorderRight(BorderStyle.THIN);
        style.setBorderTop(BorderStyle.THIN);
        style.setAlignment(HorizontalAlignment.CENTER);
        style.setVerticalAlignment(VerticalAlignment.CENTER);

        // 渲染组织架构图形
        int rowIdx = 0;
        rowIdx = renderNode(sheet, root, rowIdx, style);

        // 保存文档
        FileOutputStream outputStream = new FileOutputStream("org-chart.xlsx");
        workbook.write(outputStream);
        workbook.close();
        outputStream.close();
    }

    private static int renderNode(Sheet sheet, OrganizationChartNode node, int rowIdx, CellStyle style) {
        Row row = sheet.createRow(rowIdx++);
        Cell cell = row.createCell(0);
        cell.setCellValue(node.getName());
        cell.setCellStyle(style);

        if (!node.getChildren().isEmpty()) {
            // 如果有子节点，则合并单元格并插入箭头
            int startRow = rowIdx;
            int endRow = startRow + node.getChildren().size() - 1;
            CellRangeAddress range = new CellRangeAddress(startRow, endRow, 0, 0);
            sheet.addMergedRegion(range);

            // 插入箭头
            Row arrowRow = sheet.createRow(startRow + node.getChildren().size() / 2);
            Cell arrowCell = arrowRow.createCell(1);
            arrowCell.setCellValue("→");
            arrowCell.setCellStyle(style);

            // 递归渲染子节点
            for (OrganizationChartNode child :node.getChildren()) {
rowIdx = renderNode(sheet, child, rowIdx, style);
}
}
    return rowIdx;
}