crawler4j | Open Source Web Crawler for Java | Crawler library

by yasserg Java Version: 4.4.0 License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | crawler4j Summary

crawler4j is a Java library typically used in Automation, Crawler applications. crawler4j has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has high support. You can download it from GitHub, Maven.

crawler4j is an open source web crawler for Java which provides a simple interface for crawling the Web. Using it, you can setup a multi-threaded web crawler in few minutes.

Support

Quality

Security

License

Reuse

Support

crawler4j has a highly active ecosystem.

It has 4391 star(s) with 1923 fork(s). There are 307 watchers for this library.

It had no major release in the last 12 months.

There are 144 open issues and 142 have been closed. On average issues are closed in 203 days. There are 46 open pull requests and 0 closed requests.

It has a negative sentiment in the developer community.

The latest version of crawler4j is 4.4.0

Quality

crawler4j has 0 bugs and 0 code smells.

Security

crawler4j has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

crawler4j code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

crawler4j is licensed under the Apache-2.0 License. This license is Permissive.

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

Reuse

crawler4j releases are available to install and integrate.

Deployable package is available in Maven.

Build file is available. You can build the component from source.

Installation instructions, examples and code snippets are available.

crawler4j saves you 2702 person hours of effort in developing the same functionality from scratch.

It has 5857 lines of code, 467 functions and 78 files.

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

Top functions reviewed by kandi - BETA

kandi has reviewed crawler4j and discovered the below as its top functions. This is intended to give you an instant insight into crawler4j implemented functionality, and help decide if they suit your requirements.

Runs the loop
Processes a single page
Parse content
Returns a relative URL for the given linkUrl
Command entry point
Fetches a list of robots
Retrieve a single page
Parses the content of a robot
Parse the given page
Sets the domain URL
Gets the outgoing URLs for the given context
Assigns a document id to a URL
Parses a URL
Processes an XML start tag
Adds an URL to the outgoing URLs
Adds credentials to the request
Add NT credentials for Microsoft AD sites
Changes the user agent string
Shuts down the crawler
Returns a string representation of the current settings
Try to connect to the server
Store page
Ends an HTML element
Handle postgresql
Do form authentication
Compares this URL with another URL

Get all kandi verified functions for this library.

crawler4j Key Features

No Key Features are available at this moment for crawler4j.

crawler4j Examples and Code Snippets

No Code Snippets are available at this moment for crawler4j.

Community Discussions

Trending Discussions on crawler4j

docker wordpress + nginx returning empty response on curl without headers

QUESTION

docker wordpress + nginx returning empty response on curl without headers

Asked 2021-Nov-17 at 16:04

I have a wordpress+nginx in a docker container that is working perfectly through the browser, but when I try to send an http request via curl without headers the response is always empty

...

ANSWER

Answered 2021-Nov-17 at 16:04

This has nothing to do with docker or wordpress or something else.
It is your nginx-configuration solely that rejecting the request:

You have Curl in your http-agent comparison in nginx-server.conf:

Source https://stackoverflow.com/questions/69915359

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

Vulnerabilities

No vulnerabilities reported

Install crawler4j

You need to create a crawler class that extends WebCrawler. This class decides which URLs should be crawled and handles the downloaded page. The following is a sample implementation:.
shouldVisit: This function decides whether the given URL should be crawled or not. In the above example, this example is not allowing .css, .js and media files and only allows pages within 'www.ics.uci.edu' domain.
visit: This function is called after the content of a URL is downloaded successfully. You can easily get the url, text, links, html, and unique id of the downloaded page.

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 .

Find more information at: