RuiJi.Net

RuiJi.Net is a distributed crawl framework written in c#.

RuiJi.Net is a self host webapi written using Microsoft.Owin. Major features include distribute crawler, distribute Extractor and managed cookie.

RuiJi.Net support ip polling that using the server public network address and proxy server.

Documentation

Building

http://www.ruijihg.com/archives/ruijinet/getting-started

以上链接带中文说明

Notice

The project is under development.

Features

Crawler

Feature	Support
webheader	custom
method	get/post
auto redirection	support
cookie	managed/custom
service point ip	auto/custom Bind
encoding	auto detect/by specify
response	raw/string
proxy	http

Extractor

Feature	Support
selector	css/xpath/regex/json/text range/exclude text/clear
extrac structure	block/tile/meta

About extract structure

Examples

Crawl and Extract with loacl libary

        var crawler = new IPCrawler();
        var request = new Request("http://www.ruijihg.com/%e5%bc%80%e5%8f%91/");

        var response = crawler.Request(request);
        var content = response.Data.ToString();

        var block = new ExtractBlock();
        block.Selectors = new List<ISelector>
        {
            new CssSelector(".entry-content",CssTypeEnum.InnerHtml)
        };

        block.TileSelector = new ExtractTile
        {
            Selectors = new List<ISelector>
            {
                new CssSelector(".pt-cv-content-item",CssTypeEnum.InnerHtml)
            }
        };

        block.TileSelector.Metas.AddMeta("title",new List<ISelector> {
            new CssSelector(".pt-cv-title")
        });

        block.TileSelector.Metas.AddMeta("url", new List<ISelector> {
            new CssSelector(".pt-cv-readmore","href")
        });

        var ext = new RuiJiExtractor();
        var r = ext.Extract(content, block);

Crawl and Extract with cluster

downloaded ZooKeeper from Apache mirrors http://mirrors.hust.edu.cn/apache/zookeeper/zookeeper-3.4.12/
Add the same file as zoo_sample.cfg in folder conf and rename it to zoo.cfg. and change dataDir with your
Please confirm whether the Java runtime environment is installed
run bin/zkServer.cmd in you zookeepr folder
Start up zookeeper
Compile RuiJi.Net.Cmd and run RuiJi.Net.Cmd.exe

if You see the following information

Server Start At http://x.x.x.x:x
proxy x.x.x.x:x ready to startup!
try connect to zookeeper server : x.x.x.x:2181
zookeeper server connected!

the service startup is complete!

Notice

The RuiJi.Cmd.exe have to run as an administrator!

        var request = new Request("http://www.ruijihg.com/%e5%bc%80%e5%8f%91/");

        var response = Crawler.Request(request);

        if (response.StatusCode != System.Net.HttpStatusCode.OK)
            return;

        var content = response.Data.ToString();

        var block = new ExtractBlock();
        block.Selectors = new List<ISelector>
        {
            new CssSelector(".entry-content",CssTypeEnum.InnerHtml)
        };

        block.TileSelector = new ExtractTile
        {
            Selectors = new List<ISelector>
            {
                new CssSelector(".pt-cv-content-item",CssTypeEnum.InnerHtml)
            }
        };

        block.TileSelector.Metas.AddMeta("title", new List<ISelector> {
            new CssSelector(".pt-cv-title")
        });

        block.TileSelector.Metas.AddMeta("url", new List<ISelector> {
            new CssSelector(".pt-cv-readmore","href")
        });

        var r = Extractor.Extract(new ExtractRequest {
            Block = block,
            Content = content
        });

About RuiJi Expression

RuiJi Expression is a way to quickly add the rules of page extraction and implement soft coding. The ruiji expressions are as simple and understandable as possible.Before we start, we should first understand the rule model of RuiJi.Net.

The RuiJi expression uses the structure described in the figure above to extract the pages that need to be extracted, and the extraction unit is Block, as shown in the following figure.

Selectors is a list of selector Tiles is a region that needs to be repeatedly extracted Metas is the metadata that needs to be extracted Blocks is a subBlock that needs to be extracted within Block

If you need to extract http://www.ruijihg.com/开发, you need to observe the structure of the page first.You can use F12 to look at the structure of the page

First, make sure that the result of the Block selector is unique.

The definition of Block can be as follows

#content
css .pt-cv-view:ohtml

Continue adding tile

[tile]
    #tiles
    css .pt-cv-content-item:ohtml

    [meta]
    #title
    css .pt-cv-title:text

    #content
    css .pt-cv-content:html
    ex 阅读更多... -e

You may notice \t, because both block and tile contain meta, so the tile selector part and tile meta are \t as the current tile flag.

The complete Block description structure is as follows

[Block]
#blockname
selector

[blocks]
    @subblockname1
    @subblockname2

[tile]
    #tilename
    tile selector

    [meta]
    #meta1
    selector

    #meta2
    selector

[meta]
    #blockmeta1
    selector

    #blockmeta2
    selector