spiders | 一个NodeJs爬虫集，包括知乎、豆瓣、拉勾等网站爬虫

by qieguo2016 JavaScript Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | spiders Summary

spiders is a JavaScript library. spiders has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

一个NodeJs爬虫集，包括知乎、豆瓣、拉勾等网站爬虫

Support

Quality

Security

License

Reuse

Support

spiders has a low active ecosystem.

It has 266 star(s) with 99 fork(s). There are 7 watchers for this library.

It had no major release in the last 6 months.

There are 1 open issues and 0 have been closed. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of spiders is current.

Quality

spiders has 0 bugs and 0 code smells.

Security

spiders has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

spiders code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

spiders is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

spiders releases are not available. You will need to build from source code and install.

spiders saves you 62 person hours of effort in developing the same functionality from scratch.

It has 161 lines of code, 0 functions and 33 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed spiders and discovered the below as its top functions. This is intended to give you an instant insight into spiders implemented functionality, and help decide if they suit your requirements.

Search keywords .
fetch the first page
search a string
fetch data from topics
Fetch page
load an image
Fetch the first page
build the tree
Load user images
Parse an HTML response

Get all kandi verified functions for this library.

spiders Key Features

No Key Features are available at this moment for spiders.

spiders Examples and Code Snippets

No Code Snippets are available at this moment for spiders.

Community Discussions

Trending Discussions on spiders

How to export scraped data as readable json using Scrapy

Beautiful Soup web crawler: Trying to filter specific rows I want to parse

Scrapy CrawlSpider: Getting data before extracting link

Scrapy exclude URLs containing specific text

Scraping all urls in a website using scrapy not retreiving complete urls associated with that domain

Why does scrapy_splash CrawlSpider take the same amount of time as scrapy with Selenium?

Dynamic content from table - can't scrape with Selenium

My spawning in script is not working and I am unsure as to why this is happening

Django: Why does my custom command starts the server?

KeyError: 'Spider not found:

QUESTION

How to export scraped data as readable json using Scrapy

Asked 2022-Mar-30 at 17:21

According to SO I wrote a spider to save each domain to a separate json file. I have to use CrawlSpider to use Rules for visiting sublinks.

But the file contains json data that cannot be read by pandas. It should have a nice and readable new line separated json. But Scrapy expects the exported json to be byte like.

The desired output format is:

...

ANSWER

Answered 2022-Mar-30 at 17:21

You should use JsonLinesItemExporter instead of JsonItemExporter to get every item in separated line.

And don't bother bytes because documentation mentions that it has to open file in bytes mode.

And in pandas.read_json() you can use option lines=True to read JSONL (multiline-JSON):

Source https://stackoverflow.com/questions/71679403

QUESTION

Beautiful Soup web crawler: Trying to filter specific rows I want to parse

Asked 2022-Mar-08 at 12:08

I built a web-crawler, here is an example of one of the pages that it crawls:

https://www.baseball-reference.com/register/player.fcgi?id=buckle002jos

I only want to get the rows that contain 'NCAA' or 'NAIA' or 'NWDS' in them. Currently the following code gets all of the rows on the page and my attempt at filtering it does not quite work.

Here is the code for the crawler:

...

ANSWER

Answered 2022-Mar-06 at 20:20

Problem is because you check

Source https://stackoverflow.com/questions/71373377

QUESTION

Scrapy CrawlSpider: Getting data before extracting link

Asked 2022-Mar-05 at 17:59

In CrawlSpider, how can I scrape the marked field "4 days ago" in the image before extracting each link? The below-mentioned CrawlSpider is working fine. But in 'parse_item' I want to add a new field named 'Add posted' where I want to get the field marked on the image.

...

ANSWER

Answered 2022-Mar-05 at 03:23

To show in a loop, you can use the following xpath to receive that data point:

Source https://stackoverflow.com/questions/71356847

QUESTION

Scrapy exclude URLs containing specific text

Asked 2022-Feb-24 at 02:49

I have a problem with a Scrapy Python program I'm trying to build. The code is the following.

...

ANSWER

Answered 2022-Feb-24 at 02:49

You have two issues with your code. First, you have two Rules in your crawl spider and you have included the deny restriction in the second rule which never gets checked because the first Rule follows all links and then calls the callback. Therefore the first rule is checked first and therefore it does not exclude the urls you don't want to crawl. Second issue is that in your second rule, you have included the literal string of what you want to avoid scraping but deny expects regular expressions.

Solution is to remove the first rule and slightly change the deny argument by escaping special regex characters in the url such as -. See below sample.

Source https://stackoverflow.com/questions/71224474

QUESTION

Scraping all urls in a website using scrapy not retreiving complete urls associated with that domain

Asked 2022-Jan-22 at 19:26

I am trying to scrape all the urls in websites like https://www.laphil.com/ https://madisonsymphony.org/ https://www.californiasymphony.org/ etc to name the few. I am getting many urls scraped but not getting complete urls related to that domain. I am not sure why it is not scraping all the urls.

code

items.py

...

ANSWER

Answered 2022-Jan-22 at 19:26

spider.py:

Source https://stackoverflow.com/questions/70720008

QUESTION

Why does scrapy_splash CrawlSpider take the same amount of time as scrapy with Selenium?

Asked 2022-Jan-22 at 16:39

I have the following scrapy CrawlSpider:

...

ANSWER

Answered 2022-Jan-22 at 16:39

Taking a stab at an answer here with no experience of the libraries.

It looks like Scrapy Crawlers themselves are single-threaded. To get multi-threaded behavior you need to configure your application differently or write code that makes it behave mulit-threaded. It sounds like you've already tried this so this is probably not news to you but make sure you have configured the CONCURRENT_REQUESTS and REACTOR_THREADPOOL_MAXSIZE.

https://docs.scrapy.org/en/latest/topics/settings.html?highlight=thread#reactor-threadpool-maxsize

I can't imagine there is much CPU work going on in the crawling process so i doubt it's a GIL issue.

Excluding GIL as an option there are two possibilities here:

Your crawler is not actually multi-threaded. This may be because you are missing some setup or configuration that would make it so. i.e. You may have set the env variables correctly but your crawler is written in a way that is processing requests for urls synchronously instead of submitting them to a queue.

To test this, create a global object and store a counter on it. Each time your crawler starts a request increment the counter. Each time your crawler finishes a request, decrement the counter. Then run a thread that prints the counter every second. If your counter value is always 1, then you are still running synchronously.

Source https://stackoverflow.com/questions/70647245

QUESTION

Dynamic content from table - can't scrape with Selenium

Asked 2022-Jan-16 at 23:41

My main goal is to scrape content from the table from this site

...

ANSWER

Answered 2022-Jan-16 at 19:41

To extract the data from the Transfers table of Token Natluk Community - polygonscan webpage you need to induce WebDriverWait for the visibility_of_element_located() and using DataFrame from Pandas you can use the following Locator Strategy:

Code Block:

Source https://stackoverflow.com/questions/70733378

QUESTION

My spawning in script is not working and I am unsure as to why this is happening

Asked 2022-Jan-14 at 22:46

How my spawning in script should work is there is a large cube (250 by 250 by 250) and it has a box collider with the trigger enabled. Each mob has a value which is their health/10. My goal is to make it so that each area has a value of 100 and if it has less than that it will randomly spawn in a new mob until it goes back to 100 value. I am getting an error on the line that I am instantiating the mob on that it is giving a null reference exception error. I have assigned the enemy gameobjects in the instpector. I am purposfully not spawning in the spiders because I am doing something special for them. If there is any code you need just comment and I should be able to give it to you. Thank you

Edit: I also got an null reference exception error on start on the line where I am adding the Alk to the Enemies list

Edit: In this scene there are no other objects that would interfere with the spawning in because I disabled all of the other objects one by one and I got no errors. All of the values in the enemy base script that are related to this have values that have been assigned to them. I hope that helps narrow it down

Here is my code:

...

ANSWER

Answered 2022-Jan-14 at 22:46

I realized that when enemies were spawning in the area value wouldnt go back up becuase there wasnt anything adding to the value when they spawned in. I also optimized the code a bit more.

I was able to fix it by doing this:

Source https://stackoverflow.com/questions/70714521

QUESTION

Django: Why does my custom command starts the server?

Asked 2022-Jan-03 at 08:08

I am trying to use Scrapy with Django so I defined the following custom management command:

...

ANSWER

Answered 2022-Jan-03 at 08:08

The server isn't started, it's checked by django automatically.

This behavior can be disabled by setting requires_system_checks to False like so;

Source https://stackoverflow.com/questions/70561915

QUESTION

KeyError: 'Spider not found:

Asked 2021-Dec-29 at 22:45

I am following the youtube video https://youtu.be/s4jtkzHhLzY and have reached 13:45, when the creator runs his spider. I have followed the tutorial precisely, yet my code refuses to run. This is my actual code. I imported scrapy too as well. Can anyone help me figure out why scrap refuses to acknowledge my spider? The file is in the correct 'spider' file. I am so confused rn.

...

ANSWER

Answered 2021-Dec-29 at 06:33

spider_name = 'whiskey' should be name = 'whiskey'

Source https://stackoverflow.com/questions/70514997

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install spiders

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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