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删除 'W5/NeteaseCommentCrawler.java' #4

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pangyaxuan merged 1 commits from delete-w5-file into main 2 weeks ago
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  1. 148
      W5/NeteaseCommentCrawler.java

148
W5/NeteaseCommentCrawler.java
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@ -1,148 +0,0 @@
package com.example;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
public class NeteaseCommentCrawler {
private static final String USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36";
public static JSONArray getHotComments(String songId) {
String apiUrl = "https://music.163.com/api/v1/resource/comments/R_SO_4_" + songId
+ "?rid=R_SO_4_" + songId
+ "&offset=0&total=true&limit=20";
try {
System.out.println("正在请求网易云音乐评论接口...");
URL url = new URL(apiUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setConnectTimeout(15000);
conn.setReadTimeout(15000);
conn.setRequestProperty("User-Agent", USER_AGENT);
conn.setRequestProperty("Referer", "https://music.163.com/song?id=" + songId);
conn.setRequestProperty("Accept", "*/*");
conn.setRequestProperty("Accept-Language", "zh-CN,zh;q=0.9,en;q=0.8");
int statusCode = conn.getResponseCode();
System.out.println("HTTP状态码：" + statusCode);
if (statusCode != 200) {
System.err.println("请求失败，HTTP状态码：" + statusCode);
return new JSONArray();
}
String responseStr = readStream(conn.getInputStream());
System.out.println("响应长度：" + responseStr.length() + " 字符");
if (responseStr == null || responseStr.trim().isEmpty()) {
System.err.println("响应内容为空");
return new JSONArray();
}
JSONObject responseJson = JSON.parseObject(responseStr);
if (responseJson == null) {
System.err.println("JSON解析失败");
return new JSONArray();
}
int code = responseJson.getIntValue("code");
if (code != 200) {
System.err.println("接口返回错误码：" + code + "，消息：" + responseJson.getString("message"));
return new JSONArray();
}
JSONArray hotComments = responseJson.getJSONArray("hotComments");
if (hotComments == null || hotComments.isEmpty()) {
System.out.println("该歌曲暂无热门评论");
return new JSONArray();
}
return hotComments;
} catch (Exception e) {
System.err.println("爬取失败：" + e.getMessage());
e.printStackTrace();
}
return new JSONArray();
}
private static String readStream(InputStream is) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8));
StringBuilder sb = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
sb.append(line);
}
return sb.toString();
}
public static void printComments(JSONArray hotComments) {
System.out.println("\n===== 网易云音乐热门评论 =====");
System.out.println("共获取到 " + hotComments.size() + " 条热门评论\n");
for (int i = 0; i < hotComments.size(); i++) {
JSONObject comment = hotComments.getJSONObject(i);
JSONObject user = comment.getJSONObject("user");
String nickname = user.getString("nickname");
String content = comment.getString("content").replace("\n", " ");
int likedCount = comment.getInteger("likedCount");
Long time = comment.getLong("time");
String timeStr = formatTime(time);
System.out.printf("%d. [%s]：%s（%d赞）%s%n",
i + 1, nickname, content, likedCount, timeStr);
}
}
private static String formatTime(Long timestamp) {
if (timestamp == null) return "";
java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
return sdf.format(new java.util.Date(timestamp));
}
public static void saveToCSV(JSONArray hotComments) {
String filePath = "netease_hot_comments.csv";
try (FileWriter writer = new FileWriter(filePath, StandardCharsets.UTF_8)) {
writer.write("序号,用户,评论,点赞数,时间\n");
for (int i = 0; i < hotComments.size(); i++) {
JSONObject comment = hotComments.getJSONObject(i);
JSONObject user = comment.getJSONObject("user");
String nickname = user.getString("nickname");
String content = comment.getString("content").replace("\n", " ").replace(",", "，");
int likedCount = comment.getInteger("likedCount");
Long time = comment.getLong("time");
String timeStr = formatTime(time);
writer.write(String.format("%d,%s,%s,%d,%s%n",
i + 1, nickname, content, likedCount, timeStr));
}
System.out.println("\n评论已保存到 " + filePath);
} catch (Exception e) {
System.err.println("保存CSV失败：" + e.getMessage());
}
}
public static void main(String[] args) {
String songId = "186016";
System.out.println("歌曲ID：" + songId + "（周杰伦 - 晴天）");
System.out.println("================================");
JSONArray hotComments = getHotComments(songId);
if (!hotComments.isEmpty()) {
printComments(hotComments);
saveToCSV(hotComments);
} else {
System.out.println("未获取到评论，请检查：");
System.out.println(" 1. 歌曲ID是否正确");
System.out.println(" 2. 网络是否能访问 music.163.com");
}
}
}
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