DotnetSpider

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

If you want to get the 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 EntitySpider(IOptions<SpiderOptions> options, SpiderServices services, ILogger<Spider> logger) : base(
        options, services, logger)
    {
    }

    #region Nested type: CnblogsEntry

    [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>
    {
        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; }

        protected override void Configure()
        {
            HasIndex(x => x.Title);
            HasIndex(x => new
            {
                x.WebSite,
                x.Guid
            }, true);
        }
    }

    #endregion

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

    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");
    }
}

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

Package	License
Bert.RateLimiters	Apache 2.0
MessagePack	MIT
Newtonsoft.Json	MIT
Dapper	Apache 2.0
HtmlAgilityPack	MIT
ZCJ.HashedWheelTimer	MIT
murmurhash	Apache 2.0
Serilog.AspNetCore	Apache 2.0
Serilog.Sinks.Console	Apache 2.0
Serilog.Sinks.RollingFile	Apache 2.0
Serilog.Sinks.PeriodicBatching	Apache 2.0
MongoDB.Driver	Apache 2.0
MySqlConnector	MIT
AutoMapper.Extensions.Microsoft.DependencyInjection	MIT
Docker.DotNet	MIT
BuildBundlerMinifier	Apache 2.0
Pomelo.EntityFrameworkCore.MySql	MIT
Quartz.AspNetCore	Apache 2.0
Quartz.AspNetCore.MySqlConnector	Apache 2.0
Npgsql	PostgreSQL License
RabbitMQ.Client	Apache 2.0
Polly	BSD 3-C

AREAS FOR IMPROVEMENTS

QQ Group: 477731655 Email: zlzforever@163.com