ADD file via upload

DanmuParser.java

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+// src/main/java/com/llm/analysis/DanmuParser.java
+package com.llm.analysis;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.NodeList;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import java.io.ByteArrayInputStream;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class DanmuParser {
+
+    // 基础噪声词列表，您需要扩充它！
+    private static final List<String> NOISE_WORDS = Arrays.asList(
+            "666", "哈哈哈", "点赞", "马克", "awsl", "前排", "草"
+    );
+
+    /**
+     * 解析B站弹幕XML，提取内容并进行基础噪声过滤。
+     * @param xmlContent 弹幕XML字符串
+     * @return 清理后的弹幕文本列表
+     */
+    public static List<String> parseAndCleanDanmu(String xmlContent) {
+        List<String> danmuList = new ArrayList<>();
+        if (xmlContent == null) return danmuList;
+
+        try {
+            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+            DocumentBuilder db = dbf.newDocumentBuilder();
+            // 将字符串转为输入流，进行解析
+            Document doc = db.parse(new ByteArrayInputStream(xmlContent.getBytes(StandardCharsets.UTF_8)));
+
+            // 弹幕内容在XML中的 'd' 标签内
+            NodeList dNodes = doc.getElementsByTagName("d");
+
+            for (int i = 0; i < dNodes.getLength(); i++) {
+                Element danmuElement = (Element) dNodes.item(i);
+                String danmuText = danmuElement.getTextContent().trim();
+
+                // 噪声过滤
+                if (!danmuText.isEmpty() && danmuText.length() > 1) {
+                    boolean isNoise = NOISE_WORDS.stream().anyMatch(danmuText::contains);
+                    if (!isNoise) {
+                        danmuList.add(danmuText);
+                    }
+                }
+            }
+        } catch (Exception e) {
+            System.err.println("解析弹幕XML失败：" + e.getMessage());
+        }
+        return danmuList;
+    }
+}