Zhihu の回答をクロールするためのゼロ基礎を備えた Java Zhihu クローラーを作成する

import java.util.ArrayList;
public class Zhihu {
 public String question;// 问题
 public String questionDescription;// 问题描述
 public String zhihuUrl;// 网页链接
 public ArrayList<String> answers;// 存储所有回答的数组
 // 构造方法初始化数据
 public Zhihu() {
  question = "";
  questionDescription = "";
  zhihuUrl = "";
  answers = new ArrayList<String>();
 }
 @Override
 public String toString() {
  return "问题：" + question + "\n" + "描述：" + questionDescription + "\n"
    + "链接：" + zhihuUrl + "\n回答：" + answers + "\n";
 }
}

static ArrayList<Zhihu> GetZhihu(String content) {
  // 预定义一个ArrayList来存储结果
  ArrayList<Zhihu> results = new ArrayList<Zhihu>();
  // 用来匹配url，也就是问题的链接
  Pattern urlPattern = Pattern.compile("<h2>.+?question_link.+?href=\"(.+?)\".+?</h2>");
  Matcher urlMatcher = urlPattern.matcher(content);
  // 是否存在匹配成功的对象
  boolean isFind = urlMatcher.find();
  while (isFind) {
   // 定义一个知乎对象来存储抓取到的信息
   Zhihu zhihuTemp = new Zhihu(urlMatcher.group(1));
   // 添加成功匹配的结果
   results.add(zhihuTemp);
   // 继续查找下一个匹配对象
   isFind = urlMatcher.find();
  }
  return results;
 }

// 处理url
 boolean getRealUrl(String url) {
  // 将http://www.zhihu.com/question/22355264/answer/21102139
  // 转化成http://www.zhihu.com/question/22355264
  // 否则不变
  Pattern pattern = Pattern.compile("question/(.*?)/");
  Matcher matcher = pattern.matcher(url);
  if (matcher.find()) {
   zhihuUrl = "http://www.zhihu.com/question/" + matcher.group(1);
  } else {
   return false;
  }
  return true;
 }

// 匹配标题
   pattern = Pattern.compile("zh-question-title.+?<h2.+?>(.+?)</h2>");
   matcher = pattern.matcher(content);
   if (matcher.find()) {
    question = matcher.group(1);
   }
   // 匹配描述
   pattern = Pattern
     .compile("zh-question-detail.+?<div.+?>(.*?)</div>");
   matcher = pattern.matcher(content);
   if (matcher.find()) {
    questionDescription = matcher.group(1);
   }