参考文章：https://www.cnblogs.com/ZhaoxiCheung/p/9333476.html
接口分析主要的数据存在于graphql/接口中：
https://leetcode-cn.com/graphql/
首页热门题目接口
是否AC状态查看接口
每日一题接口
构造 GraphQL Query来获取信息在Headers下的Request Payload中我们可以看到一个query字段，这是我们要构造的 GraphQL Query 的一个重要信息。
利用Postman来分析接口我们并不一开始就用代码来获取题目信息，而是先利用 Postman 来看看如何获取题目信息。右键 Network 下的 graphql 文件—>Copy—>Copy as cURL(bash)
接着我们打开Postman，点击左上角File里的import，然后找到Raw text栏
将copy下来的cURL粘贴到Raw text中，点击continue，就可以在Postman中查看
在这之前遇到了一个小问题，把copy all as cURL看成了copy as cURL，导致在Postman中解析错误。
curl解析的结果如下：
从解析的结果看，和我们在Headers中看到的query字段类似，不过有一些细节需要更改。
当然，如果不想直接粘贴复制的 cURL，那么我们可以自己在 Postman 中写 Header 和 Body，需要注意的是这边的 Content-Type是application/graphql，Body 中的 GraphQL 构造，参照 Request Payload 中的query的字段来构造
package com.example.leetcode_card.utils;
import com.alibaba.fastjson.JSONObject;
import okhttp3.*;
import org.jsoup.Connection;
import org.jsoup.Jsoup;
import java.io.IOException;
import java.util.Map;
import java.util.Objects;
public class GraphqlUtil {
private static String base_URL = "https://leetcode-cn.com";
private static String questionUrl = "https://leetcode-cn.com/problems/two-sum/description/";
private static String GRAPHQL_URL = "https://leetcode-cn.com/graphql";
public GraphqlUtil() {
}
public static String getContent(String title) throws IOException {
Connection.Response response = Jsoup.connect(questionUrl)
.method(Connection.Method.GET)
.execute();
String csrftoken = response.cookie("aliyungf_tc");
String __cfduid = response.cookie("__cfduid");
OkHttpClient client = new OkHttpClient.Builder()
.followRedirects(false)
.followSslRedirects(false)
.build();
String query = "query{ question(titleSlug:"%s") { questionId translatedTitle translatedContent difficulty } }";
String postBody = String.format(query,title);
assert csrftoken != null;
Request request = new Request.Builder()
.addHeader("Content-Type","application/graphql")
.addHeader("Referer",questionUrl)
.addHeader("cookie","__cfduid=" + __cfduid + ";" + "csrftoken=" + csrftoken)
.addHeader("x-csrftoken",csrftoken)
.url(GRAPHQL_URL)
.post(RequestBody.create(MediaType.parse("application/graphql; charset=utf-8"),postBody))
.build();
Response response1 = client.newCall(request).execute();
//由于json的原因，返回的数据中文变成了Unicode码，需要另外解码
return unicodetoString(response1.body().string());
}
//获取每日一题的题目内容(英文),用来构建完整的请求API
public static String getTitle() throws IOException {
Connection.Response response = Jsoup.connect(questionUrl)
.method(Connection.Method.GET)
.execute();
String csrftoken = response.cookie("aliyungf_tc");
String __cfduid = response.cookie("__cfduid");
OkHttpClient client = new OkHttpClient.Builder()
.followRedirects(false)
.followSslRedirects(false)
.build();
// 获取LeetCode题目标题时的查询字符串
String postBody = "query questionOfToday { todayRecord { question { questionFrontendId questionTitleSlug __typename } lastSubmission { id __typename } date userStatus __typename }}";
assert csrftoken != null;
Request request = new Request.Builder()
.addHeader("Content-Type","application/graphql")
.addHeader("Referer",questionUrl)
.addHeader("cookie","__cfduid=" + __cfduid + ";" + "csrftoken=" + csrftoken)
.addHeader("x-csrftoken",csrftoken)
.url(GRAPHQL_URL)
.post(RequestBody.create(MediaType.parse("application/graphql; charset=utf-8"),postBody))
.build();
Response response1 = client.newCall(request).execute();
String titleInfo = unicodetoString(response1.body().string());
//将title解析出来
JSONObject jsonObject = JSONObject.parseObject(titleInfo);
return jsonObject.getJSONObject("data")
.getJSONArray("todayRecord")
.getJSONObject(0)
.getJSONObject("question")
.getString("questionTitleSlug");
}
//解码
public static String unicodetoString(String unicode) {
if (unicode == null || "".equals(unicode)) {
return null;
}
StringBuilder sb = new StringBuilder();
int i = -1;
int pos = 0;
while ((i = unicode.indexOf("\u", pos)) != -1) {
sb.append(unicode.substring(pos, i));
if (i + 5 < unicode.length()) {
pos = i + 6;
sb.append((char) Integer.parseInt(unicode.substring(i + 2, i + 6), 16));
}
}
sb.append(unicode.substring(pos));
return sb.toString();
}
}
引入的maven库：
思路二(利用python爬虫爬取GraphQL接口)4.0.0 org.example LeetcodeSpider 1.0-SNAPSHOT org.jsoup jsoup 1.14.3 com.squareup.okhttp3 okhttp 4.9.2 org.apache.httpcomponents httpclient 4.5.12 top.jfunc.common converter 1.8.0
参考文章：https://blog.csdn.net/malloc_can/article/details/113004579
# coding=： # coding=utf-8 from datetime import datetime import requests import json import smtplib from email.mime.text import MIMEText base_url = 'https://leetcode-cn.com' # 获取今日每日一题的题名(英文) response = requests.post(base_url + "/graphql", json={ "operationName": "questionOfToday", "variables": {}, "query": "query questionOfToday { todayRecord { question { questionFrontendId questionTitleSlug __typename } lastSubmission { id __typename } date userStatus __typename }}" }) leetcodeTitle = json.loads(response.text).get('data').get('todayRecord')[0].get("question").get('questionTitleSlug') # 获取今日每日一题的所有信息 url = base_url + "/problems/" + leetcodeTitle response = requests.post(base_url + "/graphql", json={"operationName": "questionData", "variables": {"titleSlug": leetcodeTitle}, "query": "query questionData($titleSlug: String!) { question(titleSlug: $titleSlug) { questionId questionFrontendId boundTopicId title titleSlug content translatedTitle translatedContent isPaidonly difficulty likes dislikes isLiked similarQuestions contributors { username profileUrl avatarUrl __typename } langToValidPlayground topicTags { name slug translatedName __typename } companyTagStats codeSnippets { lang langSlug code __typename } stats hints solution { id canSeeDetail __typename } status sampleTestCase metaData judgerAvailable judgeType mysqlSchemas enableRunCode envInfo book { id bookName pressName source shortDescription fullDescription bookImgUrl pressImgUrl productUrl __typename } isSubscribed isDailyQuestion dailyRecordStatus editorType ugcQuestionId style __typename }}"}) # 转化成json格式 jsonText = json.loads(response.text).get('data').get("question") # 题目题号 no = jsonText.get('questionFrontendId') # 题名（中文） leetcodeTitle = jsonText.get('translatedTitle') # 题目难度级别 level = jsonText.get('difficulty') # 题目内容 context = jsonText.get('translatedContent') # print(leetcodeTitle) # print(context) # print(level) # print(no) # 早安语录接口（天行数据API，自行申请免费）） response = requests.get("") json = json.loads(response.text) # 得到语录数据 ana = json.get('newslist')[0].get('content') # 表情链接 face_url = 'http://wx3.sinaimg.cn/large/007hyfXLly1g0uj7x5jpaj301o02a0sw.jpg' # 开始运行时间（可通过配置文件解耦） begin_time = datetime(2020, 12, 23) # 脚本运行时间计算 info = "本脚本已运行{0}天".format( (datetime.today() - begin_time).days.__str__()) # 数据全部HTML化 htmlText = """ code { color: blue; font-size: larger; }
早安语录:""" + ana + """ + face_url + """"> Leetcode-每日一题 """ + no + '.' + leetcodeTitle + '.' + level + """""" + context + '本题连接： + url + ">" + url + "" + info
