public void SatrtSpider()
{
List <Request> resList = new List <Request>();
var site = new DotnetSpider.Core.Site()
{
EncodingName = "UTF-8"
};
site.CycleRetryTimes = 1;
//循环获取29页句子迷原创句子
for (int k = 1; k < 50; k++)
{
for (int i = 0; i < 100; i++)
{
var url = $"http://www.liwushuo.com/api/channels/{k}/items?limit=50&offset={i * 50}";
site.AddStartUrl(url);
}
}
var spider = Spider.Create(site, new GiftDetailsPageProcessor())
.AddStartRequests(resList.ToArray())
.AddPipeline(new GiftDetailsPipeliner());
spider.ThreadNum = 1;
spider.Run();
}
public EntityProcessor(Site site, DataHandler <T> dataHandler = null, string tableName = null)
{
Site = site;
Extractor = new EntityExtractor <T>(dataHandler, tableName);
if (Extractor.EntityDefine.TargetUrlsSelectors != null && Extractor.EntityDefine.TargetUrlsSelectors.Count > 0)
{
foreach (var targetUrlsSelector in Extractor.EntityDefine.TargetUrlsSelectors)
{
var patterns = targetUrlsSelector.Patterns?.Select(x => x?.Trim()).Distinct().ToArray();
var xpaths = targetUrlsSelector.XPaths?.Select(x => x?.Trim()).Distinct().ToList();
if (xpaths == null && patterns == null)
{
throw new SpiderException("Region xpath and patterns should not be null both.");
}
if (xpaths != null && xpaths.Count > 0)
{
foreach (var xpath in xpaths)
{
AddTargetUrlExtractor(xpath, patterns);
}
}
else
{
if (patterns != null && patterns.Length > 0)
{
AddTargetUrlExtractor(null, patterns);
}
}
}
}
}
public static void CustmizeProcessorAndPipeline()
{
// Config encoding, header, cookie, proxy etc... 定义采集的 Site 对象, 设置 Header、Cookie、代理等
var site = new DotnetSpider.Core.Site {
EncodingName = "UTF-8", RemoveOutboundLinks = true
};
for (int i = 1; i < 5; ++i)
{
// Add start/feed urls. 添加初始采集链接
site.AddStartUrl($"http://list.youku.com/category/show/c_96_s_1_d_1_p_{i}.html");
}
Spider spider = Spider.Create(site,
// use memoery queue scheduler. 使用内存调度
new QueueDuplicateRemovedScheduler(),
// use custmize processor for youku 为优酷自定义的 Processor
new YoukuPageProcessor())
// use custmize pipeline for youku 为优酷自定义的 Pipeline
.AddPipeline(new YoukuPipeline());
spider.Downloader = new HttpClientDownloader();
spider.ThreadNum = 1;
spider.EmptySleepTime = 3000;
// Start crawler 启动爬虫
spider.Run();
}
public EntityProcessor(Site site, EntityMetadata entity)
{
Site = site;
_entity = entity;
_extractor = new EntityExtractor(entity.Entity.Name, entity.SharedValues, entity);
if (entity.TargetUrlsSelectors != null && entity.TargetUrlsSelectors.Count > 0)
{
var pairs = new List <string>();
foreach (var targetUrlsSelector in entity.TargetUrlsSelectors)
{
if (targetUrlsSelector.XPaths == null && targetUrlsSelector.Patterns == null)
{
throw new SpiderException("Region xpath and patterns should not be null both.");
}
if (targetUrlsSelector.XPaths == null)
{
targetUrlsSelector.XPaths = new string[] { };
}
foreach (var xpath in targetUrlsSelector.XPaths?.Select(x => x?.Trim()).Distinct())
{
AddTargetUrlExtractor(xpath, targetUrlsSelector.Patterns);
}
}
}
}
public void SatrtSpider()
{
List <Request> resList = new List <Request>();
var site = new DotnetSpider.Core.Site()
{
EncodingName = "UTF-8"
};
site.CycleRetryTimes = 1;
//循环获取29页句子迷原创句子
var db = GiftDB.GetInstance();
var list = db.Query <ArticleDetail>("SELECT * FROM t_gift_ArticleDetails");
foreach (var item in list)
{
//var url = $"http://www.liwushuo.com/posts/{item.PID}/content";
var url = $"http://www.liwushuo.com/posts/{item.PID}";
site.AddStartUrl(url);
}
var spider = Spider.Create(site, new GiftPageProcessor())
.AddStartRequests(resList.ToArray())
.AddPipeline(new GiftPipeliner());
spider.ThreadNum = 1;
spider.Run();
}
public EntityProcessor(Site site, EntityMetadata entity)
{
Site = site;
_entity = entity;
_extractor = new EntityExtractor(entity.Entity.Name, entity.SharedValues, entity);
if (entity.TargetUrlExtractor != null)
{
if (entity.TargetUrlExtractor.Patterns != null && entity.TargetUrlExtractor.Patterns.Length > 0)
{
TargetUrlPatterns = new HashSet <Regex>(entity.TargetUrlExtractor.Patterns.Select(p => new Regex(p)));
}
if (entity.TargetUrlExtractor.XPaths != null && entity.TargetUrlExtractor.XPaths.Length > 0)
{
TargetUrlRegions = new HashSet <ISelector>(entity.TargetUrlExtractor.XPaths.Select(x => Selectors.XPath(x)));
}
}
}
public static void CrawlerPagesWithoutTraverse()
{
var site = new DotnetSpider.Core.Site {
EncodingName = "UTF-8", RemoveOutboundLinks = true
};
site.AddStartUrl("https://movie.douban.com/top250");
Spider spider = Spider.Create(site,
"DOUBAN_" + DateTime.Now.ToString("yyyyMMddhhmmss"),
new QueueDuplicateRemovedScheduler(),
new DouBanPageProcessor())
.AddPipeline(new DouBanPipeline());
spider.ThreadNum = 2;
spider.EmptySleepTime = 3000;
// 启动爬虫
spider.Run();
}
public EntityProcessor(Site site, DataHandler <T> dataHandler = null, string tableName = null)
{
Site = site;
Extractor = new EntityExtractor <T>(dataHandler);
if (Extractor.EntityDefine.TargetUrlsSelectors != null && Extractor.EntityDefine.TargetUrlsSelectors.Count > 0)
{
foreach (var targetUrlsSelector in Extractor.EntityDefine.TargetUrlsSelectors)
{
if (targetUrlsSelector.XPaths == null && targetUrlsSelector.Patterns == null)
{
throw new SpiderException("Region xpath and patterns should not be null both.");
}
if (targetUrlsSelector.XPaths == null)
{
targetUrlsSelector.XPaths = new string[] { };
}
foreach (var xpath in targetUrlsSelector.XPaths?.Select(x => x?.Trim()).Distinct())
{
AddTargetUrlExtractor(xpath, targetUrlsSelector.Patterns);
}
}
}
}
