crawler4j | Open Source Simple Web Crawler for Java | Crawler library

 by   zhuoran Java Version: Current License: Apache-2.0

kandi X-RAY | crawler4j Summary

kandi X-RAY | crawler4j Summary

crawler4j is a Java library typically used in Automation, Crawler applications. crawler4j has no vulnerabilities, it has build file available, it has a Permissive License and it has high support. However crawler4j has 4 bugs. You can download it from GitHub.

##It’s composed of two parts:.

            kandi-support Support

              crawler4j has a highly active ecosystem.
              It has 30 star(s) with 16 fork(s). There are 11 watchers for this library.
              It had no major release in the last 6 months.
              crawler4j has no issues reported. There are 2 open pull requests and 0 closed requests.
              It has a negative sentiment in the developer community.
              The latest version of crawler4j is current.

            kandi-Quality Quality

              crawler4j has 4 bugs (0 blocker, 0 critical, 3 major, 1 minor) and 95 code smells.

            kandi-Security Security

              crawler4j has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              crawler4j code analysis shows 0 unresolved vulnerabilities.
              There are 16 security hotspots that need review.

            kandi-License 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.

            kandi-Reuse Reuse

              crawler4j releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              Installation instructions are not available. Examples and code snippets are available.
              crawler4j saves you 914 person hours of effort in developing the same functionality from scratch.
              It has 2086 lines of code, 129 functions and 26 files.
              It has high 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.
            • Run the crawl
            • Crawl and parse the URLs
            • crawl
            • Handles a GET request
            • Join string
            • Join string array
            • Join a collection of strings into a single string
            • Loads the configuration file
            • Instantiate an object by constructor
            • Start the crawler
            • Start the crawler thread
            • Returns a set containing the URLs of all paging pages
            • Parse a URL
            • Loads properties from classpath
            • Returns a collection of URL URLs to filter URLs
            • Returns the URLs of the target page URLs
            • Returns true if the string is a valid Java identifier
            • Check if the given string is numeric
            • Compares this URL with another object
            • Returns a hashCode of the host
            • Translates source string
            • Convert map to query string
            • Splits a string
            • Checks if the object is equal to another configuration
            • Converts a camelName to a split
            • Parses the HTML and prints it
            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


            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



            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:


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


            No vulnerabilities reported

            Install crawler4j

            You can download it from GitHub.
            You can use crawler4j like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the crawler4j component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer For Gradle installation, please refer .


            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:

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          • HTTPS


          • CLI

            gh repo clone zhuoran/crawler4j

          • sshUrl


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