Loic.dotnetcore.DotnetSpider 1.0.0

DotnetSpider

免责申明：本框架是为了帮助开发人员简化开发流程、提高开发效率，请勿使用此框架做任何违法国家法律的事情，使用者所做任何事情也与本框架的作者无关。

DotnetSpider, a .NET Standard web crawling library. It is lightweight, efficient and fast high-level web crawling & scraping framework.

If you want get latest beta packages, you should add the myget feed:

<add key="myget.org" value="https://www.myget.org/F/zlzforever/api/v3/index.json" protocolVersion="3" />

DESIGN

DEVELOP ENVIROMENT

1. Visual Studio 2017 (15.3 or later) or Jetbrains Rider

2. .NET Core 2.2 or later

3. Docker

4. MySql

    docker run --name mysql -d -p 3306:3306 --restart always -e MYSQL_ROOT_PASSWORD=1qazZAQ! mysql:5.7
   

5. Redis (option)

    docker run --name redis -d -p 6379:6379 --restart always redis
   

6. SqlServer

    docker run --name sqlserver -d -p 1433:1433 --restart always  -e 'ACCEPT_EULA=Y' -e 'SA_PASSWORD=1qazZAQ!' mcr.microsoft.com/mssql/server:2017-latest
   

7. PostgreSQL (option)

    docker run --name postgres -d  -p 5432:5432 --restart always -e POSTGRES_PASSWORD=1qazZAQ! postgres
   

8. MongoDb (option)

    docker run --name mongo -d -p 27017:27017 --restart always mongo
   

9. RabbitMQ

   docker run -d --restart always --name rabbimq -p 4369:4369 -p 5671-5672:5671-5672 -p 25672:25672 -p 15671-15672:15671-15672 \
          -e RABBITMQ_DEFAULT_USER=user -e RABBITMQ_DEFAULT_PASS=password \
          rabbitmq:3-management
   

10. Docker remote api for mac

    docker run -d  --restart always --name socat -v /var/run/docker.sock:/var/run/docker.sock -p 2376:2375 bobrik/socat TCP4-LISTEN:2375,fork,reuseaddr UNIX-CONNECT:/var/run/docker.sock
    

11. HBase

    docker run -d --restart always --name hbase -p 20550:8080 -p 8085:8085 -p 9090:9090 -p 9095:9095 -p 16010:16010 dajobe/hbase
    

MORE DOCUMENTS

https://github.com/dotnetcore/DotnetSpider/wiki

SAMPLES

Please see the Project DotnetSpider.Sample in the solution.

BASE USAGE

Base usage Codes

ADDITIONAL USAGE: Configurable Entity Spider

View complete Codes

	public class EntitySpider : Spider
	{
		public static async Task RunAsync()
		{
			var builder = Builder.CreateDefaultBuilder<EntitySpider>();
			builder.UseSerilog();
			builder.UseQueueDistinctBfsScheduler<HashSetDuplicateRemover>();
			await builder.Build().RunAsync();
		}

		public EntitySpider(IOptions<SpiderOptions> options, SpiderServices services, ILogger<Spider> logger) : base(
			options, services, logger)
		{
		}

		protected override async Task InitializeAsync(CancellationToken stoppingToken)
		{
			AddDataFlow(new DataParser<CnblogsEntry>());
			AddDataFlow(GetDefaultStorage());
			await AddRequestsAsync(
				new Request("https://news.cnblogs.com/n/page/1/", new Dictionary<string, string> {{"网站", "博客园"}}),
				new Request("https://news.cnblogs.com/n/page/2/", new Dictionary<string, string> {{"网站", "博客园"}}));
		}

		protected override (string Id, string Name) GetIdAndName()
		{
			return (ObjectId.NewId.ToString(), "博客园");
		}

		[Schema("cnblogs", "news")]
		[EntitySelector(Expression = ".//div[@class='news_block']", Type = SelectorType.XPath)]
		[GlobalValueSelector(Expression = ".//a[@class='current']", Name = "类别", Type = SelectorType.XPath)]
		[FollowRequestSelector(XPaths = new[] {"//div[@class='pager']"})]
		public class CnblogsEntry : EntityBase<CnblogsEntry>
		{
			protected override void Configure()
			{
				HasIndex(x => x.Title);
				HasIndex(x => new {x.WebSite, x.Guid}, true);
			}

			public int Id { get; set; }

			[Required]
			[StringLength(200)]
			[ValueSelector(Expression = "类别", Type = SelectorType.Environment)]
			public string Category { get; set; }

			[Required]
			[StringLength(200)]
			[ValueSelector(Expression = "网站", Type = SelectorType.Environment)]
			public string WebSite { get; set; }

			[StringLength(200)]
			[ValueSelector(Expression = "//title")]
			[ReplaceFormatter(NewValue = "", OldValue = " - 博客园")]
			public string Title { get; set; }

			[StringLength(40)]
			[ValueSelector(Expression = "GUID", Type = SelectorType.Environment)]
			public string Guid { get; set; }

			[ValueSelector(Expression = ".//h2[@class='news_entry']/a")]
			public string News { get; set; }

			[ValueSelector(Expression = ".//h2[@class='news_entry']/a/@href")]
			public string Url { get; set; }

			[ValueSelector(Expression = ".//div[@class='entry_summary']")]
			public string PlainText { get; set; }

			[ValueSelector(Expression = "DATETIME", Type = SelectorType.Environment)]
			public DateTime CreationTime { get; set; }
		}
	}

Distributed spider

Read this document

Puppeteer downloader

Coming soon

NOTICE

when you use redis scheduler, please update your redis config:

timeout 0
tcp-keepalive 60

Dependencies

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