public override Task <DataFlowResult> Parse(DataFlowContext context)
{
var response = context.GetResponse();
//context.AddItem("URL", response.Request.Url);
//context.AddItem("Title", context.GetSelectable().XPath(".//title").GetValue());
Console.ForegroundColor = ConsoleColor.Blue;
Console.WriteLine("第一页：" + context.GetSelectable().XPath(".//title").GetValue());
Console.ForegroundColor = ConsoleColor.White;
//var subs = context.GetSelectable().XPath("//*[@id=\"post_rank\"]/div[2]/div/div[@class='tag_div']/ul/li/a").Nodes().Count();
Dictionary <string, string> pageSet = new Dictionary <string, string>();
var pages = context.GetSelectable().XPath("//*[@id=\"listdiv\"]/div[@class='pagesYY']/div/a[not(@class)]/@href").GetValues();
var requestList = new List <Request>();
foreach (var page in pages)
{
if (!pageSet.ContainsKey(page))
{
var request = new Request();
request.Url = page;
request.OwnerId = response.Request.OwnerId;
requestList.Add(request);
pageSet.Add(page, page);
}
}
if (requestList.Count > 0)
{
context.AddTargetRequests(requestList.ToArray());
}
return(Task.FromResult(DataFlowResult.Success));
}
protected override Task <DataFlowResult> Parse(DataFlowContext context)
{
var response = context.GetResponse();
context.AddItem("URL", response.Request.Url);
context.AddItem("Title", context.GetSelectable().XPath(".//title").GetValue());
Dictionary <string, string> tags = new Dictionary <string, string>();
var tagNodes = context.GetSelectable().XPath("//*[@id=\"post_rank\"]/div[2]/div/div[@class='tag_div']/ul/li/a").Nodes();
foreach (var node in tagNodes)
{
var url = node.XPath("./@href").GetValue();
var name = node.GetValue();
tags.Add(url, name);
Console.WriteLine("url:" + url + " - name:" + name);
}
var requests = new List <Request>();
foreach (var tag in tags)
{
var request = new Request
{
Url = tag.Key,
OwnerId = response.Request.OwnerId,
};
request.Properties.Add("tag", tag.Value);
requests.Add(request);
}
context.AddTargetRequests(requests.ToArray());
return(Task.FromResult(DataFlowResult.Success));
}
/// <summary>
/// 取得详细图片查看的分页url
/// </summary>
/// <param name="context"></param>
public static void GetDetailPageUrl(DataFlowContext context)
{
var response = context.GetResponse();
Dictionary <string, string> pageSet = new Dictionary <string, string>();
var pages = context.GetSelectable().XPath("//*[@id=\"pages\"]/a[not(@class)]/@href").GetValues();
var requestList = new List <Request>();
foreach (var page in pages)
{
if (!pageSet.ContainsKey(page))
{
var request = new Request
{
Url = page,
OwnerId = response.Request.OwnerId,
};
request.AddProperty("tag", response.Request.GetProperty("tag"));
request.AddProperty("referer", response.Request.GetProperty("referer"));
requestList.Add(request);
pageSet.Add(page, page);
}
}
if (requestList.Count > 0)
{
context.AddTargetRequests(requestList.ToArray());
}
}
public override Task <DataFlowResult> Parse(DataFlowContext context)
{
var response = context.GetResponse();
//context.AddItem("URL", response.Request.Url);
//context.AddItem("Title", context.GetSelectable().XPath(".//title").GetValue());
//var result = CheckType(response.Request.Url);
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("page 页:" + context.GetSelectable().XPath(".//title").GetValue());
Console.ForegroundColor = ConsoleColor.White;
//var subs = context.GetSelectable().XPath("*[@id='post_rank']/div[2]/div/div[@class='tag_div']/ul/li/a/@href").GetValues();
//var subs = context.GetSelectable().XPath("//*[@id=\"post_rank\"]/div[2]/div/div[2]/ul/li/a[1]/@href").GetValue();
//var subs = context.GetSelectable().XPath("//*[@id=\"post_rank\"]/div[2]/div/div[@class='tag_div']/ul/li/a").Nodes().Count();
/*var pages = context.GetSelectable().XPath("//*[@id=\"listdiv\"]/div[3]/div/a[not(@class)]/@href").GetValues();
* foreach (var page in pages)
* {
* var request = new Request();
* request.Url = page;
* request.OwnerId = response.Request.OwnerId;
* context.AddTargetRequests(request);
* }*/
return(Task.FromResult(DataFlowResult.Success));
}
protected override Task <DataFlowResult> Parse(DataFlowContext context)
{
context.AddItem("URL", context.Response.Request.Url);
context.AddItem("Title", context.GetSelectable().XPath(".//title").GetValue());
return(Task.FromResult(DataFlowResult.Success));
}
protected override Task <DataFlowResult> Parse(DataFlowContext context)
{
var selectable = context.GetSelectable();
// 解析数据
var author = selectable.XPath("//span[@class='p-name vcard-fullname d-block overflow-hidden']")
.GetValue();
var name = selectable.XPath("//span[@class='p-nickname vcard-username d-block']")
.GetValue();
context.AddItem("author", author);
context.AddItem("username", name);
// 添加目标链接
var urls = selectable.Links().Regex("(https://github\\.com/[\\w\\-]+/[\\w\\-]+)").GetValues();
AddFollowRequests(context, urls);
// 如果解析为空，跳过后续步骤(存储 etc)
if (string.IsNullOrWhiteSpace(name))
{
context.ClearItems();
return(Task.FromResult(DataFlowResult.Terminated));
}
return(Task.FromResult(DataFlowResult.Success));
}
protected override Task <DataFlowResult> Parse(DataFlowContext context)
{
var selectable = context.GetSelectable();
// 解析数据
var name = selectable.XPath("//*[@id=\"subject_list\"]/ul/li[1]/div[2]/h2/a")
.GetValue();
var author = selectable.XPath("//*[@id=\"subject_list\"]/ul/li[1]/div[2]/div[1]")
.GetValue();
context.AddItem("author", author);
context.AddItem("username", name);
// 添加目标链接
var urls = selectable.Links().Regex("(https://book.douban\\.com/tag/[\\w\\-]+)").GetValues();
AddTargetRequests(context, urls);
// 如果解析为空，跳过后续步骤(存储 etc)
if (string.IsNullOrWhiteSpace(name))
{
context.ClearItems();
return(Task.FromResult(DataFlowResult.Terminated));
}
return(Task.FromResult(DataFlowResult.Success));
}
protected override Task <DataFlowResult> Parse(DataFlowContext context)
{
var selectable = context.GetSelectable();
// Parsing data
var author = selectable.XPath("//span[@class='p-name vcard-fullname d-block overflow-hidden']")
.GetValue();
var name = selectable.XPath("//span[@class='p-nickname vcard-username d-block']")
.GetValue();
context.AddItem("author", author);
context.AddItem("username", name);
// Add target link
var urls = selectable.Links().Regex("(https://github\\.com/[\\w\\-]+/[\\w\\-]+)").GetValues();
AddTargetRequests(context, urls);
// If the parsing is empty, skip the next step
if (string.IsNullOrWhiteSpace(name))
{
context.ClearItems();
return(Task.FromResult(DataFlowResult.Terminated));
}
return(Task.FromResult(DataFlowResult.Success));
}
public override Task <DataFlowResult> Parse(DataFlowContext context)
{
var response = context.GetResponse();
context.AddItem("URL", response.Request.Url);
context.AddItem("Title", context.GetSelectable().XPath(".//title").GetValue());
Dictionary <string, string> tags = new Dictionary <string, string>();
var tagNodes = context.GetSelectable().XPath("//*[@id=\"post_rank\"]/div[2]/div/div[@class='tag_div']/ul/li/a").Nodes();
foreach (var node in tagNodes)
{
var url = node.XPath("./@href").GetValue();
var name = node.GetValue();
tags.Add(url, name);
Console.WriteLine("url:" + url + " - name:" + name);
}
var requests = new List <Request>();
foreach (var sub in tags)
{
var request = new Request
{
Url = sub.Key,
OwnerId = response.Request.OwnerId
};
requests.Add(request);
CreateDirByTag(sub.Value);
}
context.AddTargetRequests(requests.ToArray());
/*var subs = context.GetSelectable().XPath("//*[@id=\"post_rank\"]/div[2]/div/div[@class='tag_div']/ul/li/a/@href").GetValues();
* var requests = new List<Request>();
* foreach (var sub in subs)
* {
* var request = new Request();
* request.Url = sub;
* request.OwnerId = response.Request.OwnerId;
* requests.Add(request);
* Console.WriteLine("sub parse:" + sub);
* }
* context.AddTargetRequests(requests.ToArray());*/
return(Task.FromResult(DataFlowResult.Success));
}
//public DatabaseSpiderDataParser()
//{
// CanParse = DataParserHelper.CanParseByRegex("cnblogs\\.com");
// QueryFollowRequests = DataParserHelper.QueryFollowRequestsByXPath(".");
//}
protected override Task <DataFlowResult> Parse(DataFlowContext context)
{
context.AddItem("URL", context.Response.Request.Url);
context.AddItem("Title", context.GetSelectable().XPath(".//title").GetValue());
#region add mysql database
var typeName = typeof(EntitySpider.CnblogsEntry).FullName;
var entity = new EntitySpider.CnblogsEntry();
context.Add(typeName, entity.GetTableMetadata());
ParseResult <EntitySpider.CnblogsEntry> items = new ParseResult <EntitySpider.CnblogsEntry>();
entity.WebSite = context.Response.Request.Url;
entity.Url = context.Response.Request.Url;
entity.Title = context.GetSelectable().XPath(".//title").GetValue();
items.Add(entity);
context.AddParseItem(typeName, items);
#endregion
return(Task.FromResult(DataFlowResult.Success));
}
/// <summary>
/// 获取图片浏览页里抽图片地址
/// </summary>
/// <param name="context"></param>
public static void GetDetailPictureUrl(DataFlowContext context)
{
context.AddItem("URL", context.Response.Request.Url);
context.AddItem("Title", context.GetSelectable().XPath(".//title").GetValue());
var images = context.GetSelectable().XPath("//*[@id=\"hgallery\"]/img/@src").GetValues();
foreach (var image in images)
{
//处理图片URL下载
var request = new Request
{
Url = image,
OwnerId = context.Response.Request.OwnerId
};
request.AddProperty("tag", context.Response.Request.GetProperty("tag"));
request.AddProperty("referer", context.Response.Request.GetProperty("referer"));
request.AddProperty("subject", context.GetSelectable().XPath(".//title").GetValue());
ImageDownloader.GetInstance().AddRequest(request);
}
}
public override Task <DataFlowResult> Parse(DataFlowContext context)
{
var response = context.GetResponse();
context.AddItem("URL", response.Request.Url);
context.AddItem("Title", context.GetSelectable().XPath(".//title").GetValue());
//var result = CheckType(response.Request.Url);
//Console.WriteLine("type:"+result);
//var subs = context.GetSelectable().XPath("*[@id='post_rank']/div[2]/div/div[@class='tag_div']/ul/li/a/@href").GetValues();
//var subs = context.GetSelectable().XPath("//*[@id=\"post_rank\"]/div[2]/div/div[2]/ul/li/a[1]/@href").GetValue();
//var subs = context.GetSelectable().XPath("//*[@id=\"post_rank\"]/div[2]/div/div[@class='tag_div']/ul/li/a").Nodes().Count();
var subs = context.GetSelectable().XPath("//*[@id=\"post_rank\"]/div[2]/div/div[@class='tag_div']/ul/li/a/@href").GetValues();
foreach (var sub in subs)
{
CreateFromRequest(response.Request, sub);
}
return(Task.FromResult(DataFlowResult.Success));
}
protected override Task <DataFlowResult> Parse(DataFlowContext context)
{
//context.AddItem("URL", response.Request.Url);
//context.AddItem("Title", context.GetSelectable().XPath(".//title").GetValue());
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("page 页:" + context.GetSelectable().XPath(".//title").GetValue());
Console.ForegroundColor = ConsoleColor.White;
GetSubjectUrl(context);
return(Task.FromResult(DataFlowResult.Success));
}
protected override Task <DataFlowResult> Parse(DataFlowContext context)
{
var nextPageUrl = context.GetSelectable().XPath(_nextPageSelector).Links().GetValue();
if (!string.IsNullOrWhiteSpace(nextPageUrl))
{
var followRequest = CreateFromRequest(context, nextPageUrl);
followRequest.PageIndex = context.Response.Request.PageIndex + 1;
if (CanParse == null || CanParse(followRequest))
{
context.FollowRequests.Add(followRequest);
}
}
return(Task.FromResult(DataFlowResult.Success));
}
protected override Task <DataFlowResult> Parse(DataFlowContext context)
{
var news = context.GetSelectable().XPath(".//[@class=\"news_block\"]").Nodes();
var newsObjs = new List <News>();
foreach (var item in news)
{
var url = item.Select(Selectors.XPath(".//h2[@class=\"news_entry\"]/a/@href")).GetValue();
var summary = item.Select(Selectors.XPath(".//div[@class=\"entry_summary\"]")).GetValue();
var views = int.Parse(item.Select(Selectors.XPath(".//span[@class=\"view\"")).GetValue()
.Replace("", " 人浏览"));
newsObjs.Add(new News
{
});
}
//context.AddItem("Title",);
return(Task.FromResult(DataFlowResult.Success));
}
/// <summary>
/// 获取主题的地址
/// </summary>
/// <param name="context"></param>
public static void GetSubjectUrl(DataFlowContext context)
{
var response = context.GetResponse();
var pages = context.GetSelectable().XPath("//*[@id=\"listdiv\"]/ul/li/div[@class='galleryli_title']/a/@href").GetValues();
var requestList = new List <Request>();
foreach (var page in pages)
{
var request = new Request
{
Url = page,
OwnerId = response.Request.OwnerId,
};
request.AddProperty("tag", response.Request.GetProperty("tag"));
request.AddProperty("referer", response.Request.Url);
requestList.Add(request);
}
if (requestList.Count > 0)
{
context.AddTargetRequests(requestList.ToArray());
}
}
/// <summary>
/// 解析画册的分页
/// </summary>
/// <param name="context"></param>
public static void GetSubjectPageUrl(DataFlowContext context)
{
var response = context.GetResponse();
Dictionary <string, string> pageSet = new Dictionary <string, string>();
var pages = context.GetSelectable().XPath("//*[@id=\"listdiv\"]/div[@class='pagesYY']/div/a[not(@class)]/@href").GetValues();
var requestList = new List <Request>();
foreach (var page in pages)
{
if (!pageSet.ContainsKey(page))
{
try
{
var request = new Request
{
Url = page,
OwnerId = response.Request.OwnerId,
};
//request.Properties.Add("tag", response.Request.Properties["tag"]);
request.AddProperty("tag", "萝莉");
requestList.Add(request);
pageSet.Add(page, page);
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
}
if (requestList.Count > 0)
{
context.AddTargetRequests(requestList.ToArray());
}
}
protected override Task <DataFlowResult> Parse(DataFlowContext context)
{
if (!context.Contains(_model.TypeName))
{
context.Add(_model.TypeName, _tableMetadata);
}
var selectable = context.GetSelectable();
var results = new ParseResult <T>();
if (selectable.Properties == null)
{
selectable.Properties = new Dictionary <string, object>();
}
var environments = new Dictionary <string, string>();
foreach (var property in context.Response.Request.Properties)
{
environments.Add(property.Key, property.Value);
}
if (_model.ShareValueSelectors != null)
{
foreach (var selector in _model.ShareValueSelectors)
{
string name = selector.Name;
var value = selectable.Select(selector.ToSelector()).GetValue();
if (!environments.ContainsKey(name))
{
environments.Add(name, value);
}
else
{
environments[name] = value;
}
}
}
bool singleExtractor = _model.Selector == null;
if (!singleExtractor)
{
var selector = _model.Selector.ToSelector();
var list = selectable.SelectList(selector).Nodes()?.ToList();
if (list != null)
{
if (_model.Take > 0 && list.Count > _model.Take)
{
list = _model.TakeFromHead
? list.Take(_model.Take).ToList()
: list.Skip(list.Count - _model.Take).ToList();
}
for (var i = 0; i < list.Count; ++i)
{
var item = list.ElementAt(i);
var obj = ParseObject(environments, item, i);
if (obj != null)
{
results.Add(obj);
}
else
{
Logger?.LogWarning($"解析到空数据，类型: {_model.TypeName}");
}
}
}
}
else
{
var obj = ParseObject(environments, selectable, 0);
if (obj != null)
{
results.Add(obj);
}
else
{
Logger?.LogWarning($"解析到空数据，类型: {_model.TypeName}");
}
}
if (results.Count > 0)
{
var items = context.GetParseItem(_model.TypeName);
if (items == null)
{
context.AddParseItem(_model.TypeName, results);
}
else
{
((ParseResult <T>)items).AddRange(results);
}
}
return(Task.FromResult(DataFlowResult.Success));
}
protected override Task <DataFlowResult> Parse(DataFlowContext context)
{
if (_mapping != null)
{
if (_mapping.Deepth.GetValueOrDefault() >= 1)
{
if (context.Response.Request.Depth != _mapping.Deepth.Value)
{
context.ClearItems();
return(Task.FromResult(DataFlowResult.Success));
}
}
if (!string.IsNullOrWhiteSpace(_mapping.ItemCssSelector))
{
var items = new List <dynamic>();
var itemNodes = context.GetSelectable().XPath(_mapping.ItemCssSelector).Nodes();
foreach (var note in itemNodes)
{
var item = new Dictionary <string, string>();
foreach (var field in _mapping.Mapping)
{
item.Add(field.Field, note.XPath(field.CssSelector).GetValue());
}
if (item.Count > 0)
{
item.Add("PageSourceURL", context.Response.Request.Url);
items.Add(item);
}
}
if (items.Count > 0)
{
context.AddItem("Content", JsonConvert.SerializeObject(items));
}
}
else
{
if (_mapping.Mapping != null && _mapping.Mapping.Length > 0)
{
var item = new Dictionary <string, string>();
foreach (var field in _mapping.Mapping)
{
var value = context.GetSelectable().XPath(field.CssSelector).GetValue();
if (value != null)
{
value = value.Replace("\t", "").Trim();
}
item.Add(field.Field, value);
}
if (item.Count > 0)
{
item.Add("PageSourceURL", context.Response.Request.Url);
context.AddItem("Content", JsonConvert.SerializeObject(item, Formatting.Indented));
}
}
else
{
context.AddItem("PageSourceURL", context.Response.Request.Url);
context.AddItem("Content", context.Response.RawText);
}
}
}
//var item = context.GetSelectable().XPath("//h1[@class='title_news_detail mb10']").GetValue();
//var item = context.GetSelectable().XPath("//h1[@class='title_news_detail mb10']").GetValue();
//if (!string.IsNullOrWhiteSpace(item))
//{
// // context.AddItem("Vnexpress", item);
// context.AddItem("Content:", context.Response.RawText);
//}
//else
// context.ClearItems();
return(Task.FromResult(DataFlowResult.Success));
}
protected override Task <DataFlowResult> Parse(DataFlowContext context)
{
context.AddItem("URL", context.Response.Request.Url);
context.AddItem("Quotes", context.GetSelectable().XPath("//div[@class='quote']").GetValues());
return(Task.FromResult(DataFlowResult.Success));
}
