/// <summary>
/// Implements fetch the wallpaper once
/// </summary>
/// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns>
public async Task FetchOneTime()
{
string localFile = System.Web.Hosting.HostingEnvironment.MapPath(this.wallpaperRelativeFileName);
try
{
// Construct a request and go get the JSON snippet from Bing
using (HttpRequestMessage request = new HttpRequestMessage(new HttpMethod("GET"), this.bingJSONUrl))
using (HttpClient client = new HttpClient())
using (HttpResponseMessage response = await client.SendAsync(request))
{
if (response != null && response.IsSuccessStatusCode)
{
// Url of wallpaper
string wallpaperUrl = @"http://bing.com" + this.GetImageUrl(await response.Content.ReadAsStringAsync().ConfigureAwait(false));
// Download the wallpaper to local file
await NetHttpHelper.DownloadFile(client, wallpaperUrl, localFile);
// Done.
return;
}
}
}
catch
{
// When exception is fired, just fall through and copy the default background
}
string defaultFile = System.Web.Hosting.HostingEnvironment.MapPath(this.defaultWallpaperRelativeFileName);
File.Copy(defaultFile, localFile);
}
/// <summary>
/// 检查ip有效性
/// </summary>
/// <param name="p"></param>
/// <returns></returns>
private bool checkVaild(Proxy p)
{
var flag = false;
try
{
_logger.Debug($"正在检查IP:{p.ip}:{p.port}");
var rand = new Random();
var n = rand.Next(100000);
var html = NetHttpHelper.HttpGetRequest("http://2018.ip138.com/ic.asp?" + n, out int status, 2000, p.ip, p.port);
if (status == 200)
{
//检查ip是否有效
if (html.Contains(p.ip) && !html.Contains("无效"))
{
flag = true;
_logger.Debug($"IP:{p.ip}:{p.port} 有效");
}
}
}
catch (Exception)
{
}
return(flag);
}
/// <summary>
/// 获取评论
/// </summary>
/// <param name="pUrl"></param>
/// <param name="pId"></param>
/// <param name="pageIndex"></param>
/// <param name="maxPageIndex"></param>
/// <param name="pageSize"></param>
/// <returns></returns>
private static List <CommentInfo> GetComment(CommentParam param)
{
var cinfo = new List <CommentInfo>();
var url = $"{param.url}house/ajaxrequest/dianpingList_201501.php";
if (!url.Contains("https:") && !url.Contains("http:"))
{
if (url.Contains("//"))
{
url = "https:" + url;
}
else
{
url = "https://" + url;
}
}
int pageIndex = param.pageIndex;
//循环获取评论
while ((pageIndex <= param.maxPageIndex) || (param.maxPageIndex == 0))
{
//判断是否有某些线程已经跑到了数据的最后一页 避免不必要的请求
if (endPageIndex != 0 && pageIndex > endPageIndex && param.maxPageIndex != 0)
{
pageIndex++;
continue;
}
var postParam = $"page={pageIndex}&pagesize={param.pageSize}&dianpingNewcode={param.id}";
int status = 0;
var html = NetHttpHelper.HttpPostRequest(url, postParam, out status);
if (status == 200)
{
var list = JsonConvert.DeserializeObject <model.CommentResultFtx>(html);
if (list != null && list.list.Count > 0)
{
foreach (var item in list.list)
{
cinfo.Add(new CommentInfo
{
author = string.IsNullOrWhiteSpace(item.nickname) ? item.username : item.nickname,
content = item.content.Replace("…", "…").Replace("<br/>", " "), //替换部分html 关键字
date = item.create_time
});
}
}
else
{
endPageIndex = pageIndex;
break;
}
}
pageIndex++;
Thread.Sleep(10);
}
return(cinfo);
}
/// <summary>
/// 获取评论信息
/// </summary>
/// <param name="pId"></param>
/// <returns></returns>
public static List <CommentInfo> GetProjectCommenInfo(string city_url, string pId)
{
if (city_url[city_url.Length - 1] != '/')
{
city_url += "/";
}
var cinfo = new List <CommentInfo>();
int page = 1;
//循环获取评论
bool flag = true;
while (flag)
{
var url = $"{city_url}loupan/dianping-{pId}.htmls/?from=commview_dp_moretop&p={page}";
int status = 0;
var html = NetHttpHelper.HttpGetRequest(url, out status);
if (status == 200)
{
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
//查找评论用户
var author = doc.DocumentNode.SelectNodes(".//span[@class='author']");
var content = doc.DocumentNode.SelectNodes(".//h4[@class='rev-subtit all-text']");
var date = doc.DocumentNode.SelectNodes(".//span[@class='date']");
if (author != null && author.Count > 0)
{
for (int i = 0; i < author.Count; i++)
{
var cstr = content[i].InnerText.Substring(0, content[i].InnerText.Length - 2);
cstr = cstr.Replace("…", "…").Replace("<br/>", " "); //这里不做换行处理只加空格
cinfo.Add(new CommentInfo()
{
author = author[i].InnerText,
content = cstr,
date = DateTime.Parse(date[i].InnerText)
});
}
}
else
{
break;
}
//查找是否还有下一页 如果没有则证明是最后一页
var next_page = doc.DocumentNode.SelectNodes(".//a[@class='next-page next-link']");
if (next_page == null || next_page.Count == 0)
{
break;
}
}
page++;
Thread.Sleep(20);
}
return(cinfo);
}
private void GetNewIpList(PageParam pp)
{
var index = pp.pageIndex;
var size = pp.pageSize;
for (int i = index; i < index + size; i++)
{
//高匿名代理
var url = "https://www.xicidaili.com/nn/" + i;
try
{
var html = NetHttpHelper.HttpGetRequest(url, out int status, 5000);
if (status == 200)
{
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
var table_tr = doc.DocumentNode.SelectNodes(".//table[@id='ip_list']/tr");
if (table_tr != null)
{
//第一个是标题 这里从第二个开始
for (int j = 1; j < table_tr.Count; j++)
{
var tr_child = table_tr[j].ChildNodes;
var ip_str = tr_child[3].InnerText;
var port_str = tr_child[5].InnerText;
var speed_html = tr_child[13].InnerHtml;
//提取速度
var regexStr = string.Format(" <{0}[^>]*?{1}=(['\"\"]?)(?<text>[^'\"\"\\s>]+)\\1[^>]*>", "div", "title");
Match TitleMatch = Regex.Match(speed_html, regexStr, RegexOptions.IgnoreCase);
string speed_text = TitleMatch.Groups["text"].Value;
speed_text = speed_text.Replace("秒", "");
int.TryParse(port_str, out int port);
float.TryParse(speed_text, out float speed);
//只提取速度<=2s的
if (speed <= 2)
{
//检查ip有效性
Proxy px = new Proxy(ip_str, port);
if (checkVaild(px))
{
//写入列表 稍后一并写入文件
_proxyList.Add(ip_str + "," + port_str);
}
}
}
}
}
}
catch (Exception ex)
{
//获取代理ip出错
_logger.Info("获取代理ip:" + url + " 出错");
_logger.Error(ex);
}
}
}
/// <summary>
/// 楼盘搜索
/// </summary>
/// <param name="text"></param>
/// <returns></returns>
public static SearchResult SearchHouse(string city_url, string text)
{
if (city_url[city_url.Length - 1] != '/')
{
city_url += "/";
}
var result = new SearchResult();
var url = $"{city_url}a/brand/?kw={text}";
int status = 0;
var html = NetHttpHelper.HttpGetRequest(url, out status);
if (status == 200)
{
result = JsonConvert.DeserializeObject <SearchResult>(html);
}
return(result);
}
/// <summary>
/// 检查ip是否有效
/// </summary>
/// <param name="p"></param>
/// <returns></returns>
private bool checkIP(Proxy p)
{
var flag = false;
try
{
var html = NetHttpHelper.HttpGetRequest("https://www.baidu.com", out int status, 2000, p.ip, p.port);
if (status == 200)
{
if (!html.Contains("无效"))
{
flag = true;
}
}
}
catch (Exception)
{
}
return(flag);
}
/// <summary>
/// 获取html数据 统一处理超时、自动换ip
/// </summary>
/// <param name="url">请求url</param>
/// <param name="proxy">默认代理</param>
/// <returns></returns>
private string GetHtml(string url, bool usingProxy = false)
{
string html = "";
if (usingProxy)
{
_proxy = _proxyService.GetProxy();
}
//单次请求ip更换次数
for (int i = 0; i < 20; i++)
{
try
{
html = NetHttpHelper.HttpGetRequest(url, out int status, 5000, _proxy.ip, _proxy.port);
if (status == 200 && !string.IsNullOrWhiteSpace(html))
{
//证明被安居客限制了
if (html.Contains("<title>验证码</title>"))
{
_logger.Debug("ank_需要滑动验证");
//换ip
_proxy = _proxyService.GetProxy();
continue;
}
else
{
//终止循环 代表请求成功
break;
}
}
}
catch (Exception)
{
//换ip
_proxy = _proxyService.GetProxy();
}
}
return(html);
}
/// <summary>
/// 获取楼盘信息
/// </summary>
/// <returns></returns>
public static List <ProjectInfo> GetProjectInfo(string city_url, string name)
{
if (city_url[city_url.Length - 1] != '/')
{
city_url += "/";
}
List <ProjectInfo> list = new List <ProjectInfo>();
var url = city_url + "house/s/a9" + System.Web.HttpUtility.UrlEncode(name, System.Text.Encoding.GetEncoding("GB2312"));
int status = 0;
var html = NetHttpHelper.HttpGetRequest(url, out status);
if (status == 200)
{
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
//获取楼盘列表
var nodes_p_list = doc.DocumentNode.SelectNodes(".//div[@class='nlc_details']");
if (nodes_p_list != null)
{
foreach (var item in nodes_p_list)
{
//楼盘名称
var html_name = item.SelectSingleNode(".//div[@class='nlcd_name']").SelectSingleNode(".//a");
var pName = html_name.InnerText.Trim().Replace("·", "");
var purl = "";
if (html_name != null)
{
foreach (var att in html_name.Attributes)
{
if (att.Name == "href")
{
purl = att.Value;
break;
}
}
}
if (purl.Contains("?"))
{
var temp_url = purl.Split('?')[0];
if (temp_url[temp_url.Length - 1] != '/')
{
temp_url += "/";
}
purl = temp_url;
}
//楼盘地址
var pAddress = item.SelectSingleNode(".//div[@class='address']").InnerText.Trim().Replace("\n", "").Replace("\t", "");
var pId = "";
var html_id = item.SelectSingleNode(".//div[@class='duibi']");
if (html_id != null)
{
foreach (var att in html_id.Attributes)
{
if (att.Name == "onclick")
{
//按照'分割
var temp = att.Value.Split('\'');
if (temp.Length >= 2)
{
pId = temp[1];
}
break;
}
}
}
//评论总数
var html_count = item.SelectSingleNode(".//span[@class='value_num']");
var count = 0;
if (html_count != null)
{
var temp_count = html_count.InnerText;
var number = System.Text.RegularExpressions.Regex.Replace(temp_count, @"[^0-9]+", "");
int.TryParse(number, out count);
}
var price_text = "";
var price_html = item.SelectSingleNode(".//div[@class='nhouse_price']");
if (price_html != null)
{
price_text = price_html.InnerText.Replace("\n", "").Replace("\t", "");
}
list.Add(new ProjectInfo()
{
name = pName,
address = pAddress,
url = purl,
id = pId,
commentCount = count,
price = price_text
});
}
}
}
return(list);
}
/// <summary>
/// 获取楼盘信息
/// </summary>
/// <returns></returns>
public static List <ProjectInfo> GetProjectInfo(string city_url, string name)
{
if (city_url[city_url.Length - 1] != '/')
{
city_url += "/";
}
List <ProjectInfo> list = new List <ProjectInfo>();
var url = city_url + "loupan/s?kw=" + name;
int status = 0;
var html = NetHttpHelper.HttpGetRequest(url, out status);
if (status == 200)
{
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
var node = doc.DocumentNode.SelectNodes(".//div[@class='item-mod ']"); //原网页item-mod 后有个空格
if (node != null)
{
foreach (var item in node)
{
string pName = "";
var name_html = item.SelectSingleNode(".//span[@class='items-name']");
if (name_html != null)
{
pName = name_html.InnerText;
}
var url_html = item.SelectSingleNode(".//a[@class='address']");
var address = "";
var purl = "";
if (url_html != null)
{
address = url_html.InnerText.Replace(" ", " ");
address = address.TrimEnd().TrimStart();
foreach (var att in url_html.Attributes)
{
if (att.Name == "href")
{
purl = att.Value;
break;
}
}
}
var count_html = item.SelectSingleNode(".//span[@class='list-dp']");
int count = 0;
if (count_html != null)
{
var countStr = count_html.InnerHtml.Replace("条点评", "");
int.TryParse(countStr, out count);
}
string projectId = System.Text.RegularExpressions.Regex.Replace(purl, @"[^0-9]+", "");
var price_html = item.SelectSingleNode(".//p[@class='price']");
var price_text = "";
if (price_html != null)
{
price_text = price_html.InnerText;
}
list.Add(new ProjectInfo()
{
name = pName,
commentCount = count,
id = projectId,
url = purl,
address = address,
price = price_text
});
}
}
}
return(list);
}
