mac电脑解压出来的xmind的数据主要在content.json上
开头结尾有[],里面是json

import org.json.JSONArray;
import org.json.JSONObject;
import java.io.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class XMindLeafCounter2 {

    public static void main(String[] args) {
        String xmindFilePath = "path/to/your/file.xmind"; // 替换为你的XMind文件路径
        try {
            // 解压XMind文件并提取content.json内容
            String jsonContent1 = extractContentJson(xmindFilePath);
            //System.out.println(jsonContent1);
            String jsonContent = removeOuterBrackets(jsonContent1);
           // System.out.println(jsonContent);
            JSONObject jsonObject = new JSONObject(jsonContent);

            int leafNodeCount = 0;
            // 遍历每个sheet
            JSONObject rootTopic = jsonObject.getJSONObject("rootTopic");
            leafNodeCount += countLeafNodes(rootTopic);
            System.out.println("Total leaf nodes: " + leafNodeCount);

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public static String removeOuterBrackets(String str) {
        if (str == null || str.length() <= 1) {
            return str;  // 如果字符串为空或者长度小于等于1, 直接返回
        }

        // 使用substring去掉最外层的方括号
        if (str.startsWith("[") && str.endsWith("]")) {
            return str.substring(1, str.length() - 1);
        }

        return str;  // 如果没有匹配上最外层的中括号，直接返回原字符串
    }
    /**
     * 从XMind文件中解压并提取content.json的内容
     *
     * @param xmindFilePath XMind文件路径
     * @return content.json文件内容字符串
     * @throws IOException 如果解压或读取文件失败
     */
    private static String extractContentJson(String xmindFilePath) throws IOException {
        File xmindFile = new File(xmindFilePath);
        try (ZipInputStream zis = new ZipInputStream(new FileInputStream(xmindFile))) {
            ZipEntry entry;
            while ((entry = zis.getNextEntry()) != null) {
                if (entry.getName().equals("content.json")) {
                    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
                    byte[] buffer = new byte[1024];
                    int length;
                    while ((length = zis.read(buffer)) != -1) {
                        outputStream.write(buffer, 0, length);
                    }
                    zis.closeEntry();
                    return outputStream.toString("UTF-8");
                }
            }
        }
        throw new FileNotFoundException("content.json not found in the XMind file.");
    }

    /**
     * 递归计算叶子节点数
     *
     * @param topic JSON对象表示的主题节点
     * @return 叶子节点数
     */
    private static int countLeafNodes(JSONObject topic) {
        if (topic.has("children")) {
            JSONObject children = topic.getJSONObject("children");
            if (children.has("attached")) {
                JSONArray attached = children.getJSONArray("attached");
                int count = 0;
                for (int i = 0; i < attached.length(); i++) {
                    JSONObject child = attached.getJSONObject(i);
                    count += countLeafNodes(child);
                }
                return count;
            }
        }
        // 如果没有子节点，则为叶子节点
        return 1;
    }
}