private async Task downLoadNovel(byte[] bytes, string url){title = string.Empty;nextPageUrl = string.Empty;content = string.Empty;novelInfo = string.Empty;try{byte[] response = bytes;if (bytes == null){response = await httpClient.GetByteArrayAsync(url);}content = Encoding.Default.GetString(response, 0, response.Length - 1);//获取网页字符编码描述信息   var charSetMatch = Regex.Match(content, "<meta([^<]*)charset=([^<]*)\"", RegexOptions.IgnoreCase | RegexOptions.Multiline);string webCharSet = charSetMatch.Groups[2].Value;if (chartSet == null || chartSet == "")chartSet = webCharSet;if (chartSet != null && chartSet != "" && Encoding.GetEncoding(chartSet) != Encoding.Default)content = Encoding.GetEncoding(chartSet).GetString(response, 0, response.Length - 1);}catch (Exception ex){throw ex;}//小说主域名if (webSiteDomain.Length == 0){var websiteDomainMath = Regex.Match(url, "(http).*(/)", RegexOptions.IgnoreCase);webSiteDomain = websiteDomainMath.Groups[0].Value;}//标题信息var titleInfoMath = Regex.Match(content, "(<title>)([^>]*)(</title>)", RegexOptions.IgnoreCase | RegexOptions.Multiline);title = titleInfoMath.Groups[2].Value;content = content.Replace("'", "\"").Replace("\r\n", "");for (int i = 0; i < contextPatterns.Length; i++){var cpattern = contextPatterns[i];if (novelInfo.Length == 0){    //正文信息var webInfoMath = Regex.Matches(content, cpattern, RegexOptions.IgnoreCase | RegexOptions.Multiline);for (int j = 0; j < webInfoMath.Count; j++){foreach (Group g in webInfoMath[j].Groups){var value = Regex.Split(g.Value, contextNewLine, RegexOptions.IgnoreCase);if (value.Length > 5){novelInfo = g.Value;foreach (var pattern in filterPatterns)novelInfo = Regex.Replace(novelInfo, pattern, new MatchEvaluator(p => null));novelInfo = Regex.Replace(novelInfo, contextNewLine, new MatchEvaluator(p => "\r\n"));break;}}}}elsebreak;}bytes = null;for (int i = 0; i < nextPagePatterns.Length; i++){if (nextPageUrl.Length == 0){//下一页信息var webNextPageMath = Regex.Match(content, nextPagePatterns[i], RegexOptions.IgnoreCase | RegexOptions.Multiline);if (webNextPageMath.Groups.Count > 0){foreach (Group g in webNextPageMath.Groups){if (!g.Value.EndsWith("\""))nextPageUrl = g.Value;if (nextPageUrl.StartsWith("/"))nextPageUrl = nextPageUrl.Substring(1);if (!nextPageUrl.StartsWith("http", true, null) && (Regex.IsMatch(nextPageUrl, "[a-z]") || Regex.IsMatch(nextPageUrl, "[0-9]")) && !url.EndsWith(nextPageUrl)){nextPageUrl = webSiteDomain + nextPageUrl;}try{bytes = await httpClient.GetByteArrayAsync(nextPageUrl);break;}catch{continue;}}}}elsebreak;}bool isAdd = false;cacheNovel.ForEach(p =>{if (p == (title + novelInfo)){isAdd = true;}});if (!isAdd){if (title.Length > 0){writeNovelLog("正在下载章节:" + title);}writeNovelLog("章节长度:" + novelInfo.Length);cacheNovel.Add(title + novelInfo);if (nextPageUrl.Length > 0){writeNovelLog("下一页:" + nextPageUrl);await downLoadNovel(bytes, nextPageUrl);}else{downloadFinish();}}else{writeNovelLog("存在重复的章节,章节名称:" + title + " 地址:" + url);downloadFinish();}}