dotnetcore/DotnetSpider

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

[DisplayName("博客园爬虫")]
public class EntitySpider(
    IOptions<SpiderOptions> options,
    DependenceServices services,
    ILogger<Spider> logger)
    : Spider(options, services, logger)
{
    public static async Task RunAsync()
    {
        var builder = Builder.CreateDefaultBuilder<EntitySpider>(options =>
        {
            options.Speed = 1;
        });
        builder.UseSerilog();
        builder.IgnoreServerCertificateError();
        await builder.Build().RunAsync();
    }

    protected override async Task InitializeAsync(CancellationToken stoppingToken = default)
    {
        AddDataFlow<DataParser<CnblogsEntry>>();
        AddDataFlow(GetDefaultStorage);
        await AddRequestsAsync(
            new Request(
                "https://news.cnblogs.com/n/page/1", new Dictionary<string, object> { { "网站", "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)]
    [GlobalValueSelector(Expression = "//title", Name = "Title", Type = SelectorType.XPath)]
    [FollowRequestSelector(Expressions = ["//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", Type = SelectorType.Environment)]
        [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']")]
        [TrimFormatter]
        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

AREAS FOR IMPROVEMENTS

QQ Group: 477731655 Email: [email protected]