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README.md

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About RuiJi Scraper

RuiJi Scraper is a RuiJi expression based browser plug-in that uses visual rule editing and generates RuiJi expressions for RuiJi.Net. firefox

Contributors

This project exists thanks to all the people who contribute.

Backers

Thank you to all our backers! 🙏 [Become a backer]

Sponsors

Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [Become a sponsor]

Support us

https://www.scraperapi.com/?fp_ref=ruijinet

https://promotion.aliyun.com/ntms/yunparter/invite.html?userCode=r1bio67c&utm_source=r1bio67c

About RuiJi.Net

RuiJi.Net is a distributed crawl framework written in netcore.

RuiJi.Net is a self host webapi written using Microsoft.AspNetCore.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://doc.ruijihg.com/

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

Selectors

Type
CSS
REGEX
REGEXSPLIT
TEXTRANGE
EXCLUDE
REGEXREPLACE
JPATH
XPATH
CLEAR
EXPRESSION
SELECTORPROCESSOR

Extract structure

Image text

Examples

crawl use local ip automatic

var crawler = new RuiJiCrawler();
var request = new Request("https://www.baidu.com");
var response = crawler.Request(request);

crawl with special ip

var crawler = new RuiJiCrawler();
var request = new Request("https://www.baidu.com");
request.Ip = "192.168.31.196";
var response = crawler.Request(request);

crawl with proxy

var crawler = new RuiJiCrawler();
var request = new Request("https://www.baidu.com");
request.Proxy = new RequestProxy("223.93.172.248", 3128);

var response = crawler.Request(request);

extract url

var crawler = new RuiJiCrawler();
var request = new Request("https://www.oschina.net/blog");

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

var parser = new RuiJiParser();
var eb = parser.ParseExtract("css a.blog-title-link[href]\nexp https://my.oschina.net/*/blog/*");
var result = RuiJiExtractor.Extract(content, eb.Block);

extract tile

var crawler = new RuiJiCrawler();
var request = new Request("http://www.ruijihg.com/archives/category/tech/bigdata");

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

var parser = new RuiJiParser();
var eb = parser.ParseExtract(@"[tile]\ncss article:html

[meta]
#title
css .entry-header:text

#summary
css .entry-header + p:text
ex /Read more »/ -e");

var result = RuiJiExtractor.Extract(content, eb.Block);

extract meta

var crawler = new RuiJiCrawler();
var request = new Request("https://my.oschina.net/zhupingqi/blog/1826317");

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

var parser = new RuiJiParser();
var eb = parser.ParseExtract(@"[meta]
#title
css h1.header:text

#author
css div.blog-meta .avatar + span:text

#date
css div.blog-meta > div.item:first:text
regS /发布于/ 1

#words_i
css div.blog-meta > div.item:eq(1):text
regS / / 1

#content
css #articleContent:html");

var result = RuiJiExtractor.Extract(content, eb.Block);

detect mine

var crawler = new RuiJiCrawler();
var request = new Request("http://img10.jiuxian.com/2018/0111/cd51bb851410404388155b3ec2c505cf4.jpg");
var response = crawler.Request(request);

var ex = response.Extensions;

RuiJi.Net Cluster

  1. downloaded ZooKeeper from Apache mirrors http://mirrors.hust.edu.cn/apache/zookeeper/zookeeper-3.4.12/

  2. Add the same file as zoo_sample.cfg in folder conf and rename it to zoo.cfg. and change dataDir with your

  3. Please confirm whether the Java runtime environment is installed

  4. run bin/zkServer.cmd in you zookeepr folder

  5. Start up zookeeper

  6. 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!

The RuiJi.Net.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
        });

RuiJi Expression

RuiJi Expression is a way to quickly add the rules of page extraction. 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

Image text

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

Image text

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

Image text

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

Admin Ui

Contact

Please contact me with any suggestion

416803633@qq.com

my website : www.ruijihg.com

QQ交流群: 545931923

https://github.com/zhupingqi/RuiJi.Net

https://gitee.com/zhupingqi/RuiJi.Net

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