Curl command in java. The cURL command syntax is curl [options] [URL].

Curl command in java This tool is useful when you need to translate API examples (often provided as curl commands) into the programming language you're working with. Apr 16, 2025 · In this example, I will demonstrate cURL HTTP request conversion with the following libraries: 2. curl from Google Chrome Open the Network tab in the DevTools Right click (or Ctrl-click) a request Click "Copy" → "Copy as cURL" "Copy as cURL (bash)" Paste it in the curl command box above java-curl is a pure-java HTTP utility implemented based on HttpURLConnection in the standard JRE, while the usage references to the commonly-used CURL command line tool under Linux. curl. Jul 23, 2025 · Curl is a command-line tool for making web requests, often used directly from the terminal. This I use Ubuntu and installed cURL on it. The cURL command syntax is curl [options] [URL]. Follow this example about how to make a POST request using java (with http-client). Append this option to any ordinary curl command line, and you get libcurl-using C source code written to the file that does the equivalent of what your command-line operation does. Essentially, Curl prints the web response to the terminal. The command is designed to work without user interaction. Simply paste your cURL into the input form, and we'll automatically generate the equivalent Java code, making API testing and web scraping a breeze! Dec 6, 2021 · I am using Spring with Java 11. net. However, I want to test it with cURL. It also has some payload. This often means using classes from the built-in `java. URLConnection classes. Answer Converting a cURL request to an HTTP request in Java involves translating the command line parameters of the cURL call into Java's HTTP libraries. Learn how to perform cURL operations in Java to fetch web page content, including code examples and common debugging tips. I am trying to execute the following curl command from Java, but the answer I get is incorrect, since it always returns the status 401. I wrote my POST code at the Java side. This combination makes it a very good ad-hoc tool for testing our REST services. Dec 7, 2023 · This article provides 12 practical examples of using the Curl command-line tool, with a brief description of each Curl example. A comprehensive guide with examples and best practices. Explore code examples and best practices. Spring REST A Simple Spring REST API to validate a login. Jun 5, 2014 · I have a curl command to use curl -s -d user. Learn how to convert curl commands to Java using HttpURLConnection and Apache HttpClient in this comprehensive guide. Jul 24, 2020 · Here, I will show you the simpler way of just replicating your console/ terminal tests ( just not limited to CURL ) through Java - Java. When provided with a cURL command, the tool parses the command and generates Java code that can be used to make the same REST request using Apache HttpClient. In this article, we will learn how to make REST API requests using Curl. The Curl to Angular Converter is a tool that allows users to convert cURL requests into equivalent Java code. In this step, I will show cURL requests for both Get and Post requests. Learn how to convert cURL commands into Java code with our detailed guide and code examples. Learn how to effectively send POST requests with Curl using data from a file in Java. Perfect for Java developers and beginners! Jan 29, 2017 · This article shows you how to use cURL command to POST JSON data to a Spring REST API. exec () method to run CURL commands, common pitfalls, and troubleshooting tips. Example 1 · Example 2 · Example 3 · Example 4 · Example 5 Jun 15, 2016 · I have a curl command that gives a JSON response. Convert cURL to Java Instantly convert your cURL commands to Java code online, with our efficient, accurate, and developer-friendly tool. Dec 3, 2023 · You can send a POST request with Curl by explicitly specifying the POST method with the -X POST command line parameter or passing data to Curl using the -d or --data command line parameter. Converting a curl command into Java using RestTemplate involves translating each part of the curl command into the corresponding HTTP request components in Java. I am getting status code 400. curl-to-java is a tool to instantly convert curl commands to Java code in the browser. It can be distributed as a single executable JAR. Is it possible to do so?? With below Java code: public static voi Jan 19, 2018 · cURL is a tool to transfer data from or to a server, using one of the supported protocols (DICT, FILE, FTP, FTPS, GOPHER, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNETand TFTP). Apr 5, 2025 · Explore how to translate a simple cURL command into Java code using various libraries and tools. A typical cURL command might look like this: Feb 21, 2023 · Curl commands work without user interaction and are therefore ideal for use in automation scenarios. tech fetches IP address details in JSON format, just like visiting the site in a browser. Whether you're working with REST APIs, testing endpoints, or learning how to interact with web services, our tool makes it easy to translate curl commands into the programming language of your choice. I am trying to post a JSON d Apr 26, 2017 · The curl is doing a POST request where you are doing a GET request form java. Step-by-step guide, practical examples, and best practices included. lang. Supported languages include JavaScript, Python, PHP, Go, Ruby, C#, and Java. Curl doesn't have support for java keystore file, so therefor the file should be converted to a PEM format. Curl is a networking tool used to transfer data between a server and the curl client using protocols like HTTP, FTP, TELNET, and SCP. Generate Java code from curl commands. This allows you to run external system commands, such as curl, within your Java code, enabling integration with APIs and web services. Jan 25, 2024 · In this tutorial, we’re going to look at how to use the curl tool inside a Java program. Here's a step-by-step guide on how to do this: Learn how to effectively use Java's Runtime. You can easily get much of the functionality using Jakarta Commons Net, unless there is some specific functionality like "resume transfer" you need (which is tedious to code on your own) Feb 2, 2024 · This tutorial educates about cURL and demonstrates its uses via code examples in Java. Jul 14, 2023 · Curl (stands for Client URL) is an open-source command-line tool and a cross-platform library (libcurl) developers use for client/server communications. Jan 11, 2023 · Add the Curl folder (C:\Curl\bin) to your Windows PATH environment variable to invoke the Curl command from any other folder. Curl allows you to send data to the server by sending the target URL and the data as command-line parameters. But it is not giving the desired result, I am trying to run this Learn how to use Curl to post raw body data in Java applications effectively. Aug 21, 2015 · 2 I am trying to get the output of curl command in java. 1. May 31, 2023 · CURL Command What is CURL command That’s where the CURL command comes in handy. Test APIs, websites, and web services and validate server responses without installing additional software or plugins. Enter curl --version on the command line to make sure you can Curl commands. Currently, it knows the following options: -d/--data, -H/--header, -I/--head, --url, and -X/--request. I am able to execute the same curl command manually through terminal and obtain the output but when I try to execute through java code as below, the output obtained is null. Executing curl commands from a Java application can be done efficiently using the ProcessBuilder class. The most common approach is using the HttpURLConnection class or libraries like Apache HttpClient or OkHttp for more complex scenarios. Oct 16, 2025 · By converting cURL commands to Java, you can integrate API calls and data transfer operations directly into your Java applications. I want to use this curl command in java & parse the JSON response in java. Convert curl commands to Python, JavaScript, PHP, Java, Ruby, C#, Go, Swift, and Rust code instantly. curl examples for testing CRUD REST APIs. Learn Curl with an extensive database of handpicked Curl examples. jCurl is a curl-inspired, java-based HTTP command line client. What am I missing? Following is the curl I use in terminal. Learn how to use the Curl command in Java applications to make HTTP requests effectively. URL and java. Most of the examples given can be done right in the browser using the ReqBin Online Curl Client. to is a free developer tool that helps you convert curl commands to code in multiple programming languages. Jun 5, 2024 · Using cURL in Java can be achieved by utilizing the java. First of all , i've already seen couple of documents, stackoverflow questions regarding the same . ProcessBuilder is our saviour. Mar 26, 2025 · This tutorial gives a brief overview of testing a REST API using curl. Feel free to contribute on GitHub! This script derives from Matt Holt's excellent curl-to-Go and curl-to-php. Well, as it turns out, you can extract the key and certificate information from a Java Key Store for use by another client application, but the process is a bit involved, so I thought I'd document it here in case Convert curl commands to Java HTTP client code online. - libetl/curl Jul 14, 2023 · To make a GET request using Curl, run the curl command followed by the target URL. to helps developers convert curl commands to code in various programming languages. toString( cURL command in full java. It consists of the following multiple steps: Convert keystore to p12 file Convert p12 file to pem file Run curl command with pem files Learn how to use Java Curl for making HTTP requests effectively with practical examples and tips. I have a test curl command that I can call successfully via java. With AEM, you can use cURL commands to modify repository, download json, access OSGi information etc May 11, 2025 · Curl doesn't have support for java keystore file, so therefor the file should be converted to a PEM format. Oct 24, 2022 · Just I have one problem and probably you could help me, I am trying to execute CURL command in Java 8, I have my code when I am running is getting empty as a response in this line writer. Support modern Java HTTP client, OkHttp, and Apache HttpClient. Apr 6, 2010 · Curl is a non-java program and must be provided outside your Java program. Dec 17, 2020 · I would like to execute the below curl command and specify my own key store. CURL Command for HTTP Requests. Here’s a comprehensive guide on how to achieve this, along with an example. Any argument/option you need raise an issue here. It consists of the following multiple steps: Convert keystore to p12 file Convert p12 file to pem file Run curl command with pem files Learn how to run cURL commands in Java with examples, explanations, and common pitfalls. CURL is a powerful command-line tool available in Linux that allows you to consume APIs directly. This article will go over the 12 most essential Curl commands for day-to-day use for making requests over HTTP/HTTPS protocols. I have already seen couple of documents, stackoverflow questions regarding the same. curl -k -v -u "admin2 Learn how to convert cURL commands into Postman requests with this detailed guide. cURL is a command - line tool that allows you to make requests to a server. Java provides several libraries that allow you to make HTTP requests, similar to the functionality of the curl command. Aug 31, 2023 · Run, save, and collaborate Curl commands directly from your browser. In this tutorial, we will explore how to utilize cURL commands within Java applications for making RESTful API calls. name=xxxx \\ -d file=yyyy \\ -d arg=-v \\ 'http://localhost:zzzz/templeton/v1/pig' Can anybody tell equivalent java code Aug 23, 2019 · I would like to run this specific curl command with a HTTP POST request in java Learn how to effectively use cURL in Java, including installation options and code examples. I tried using --cacert option and specified the path of the cacert jks. For example, curl -L ip. I want to test my Spring REST application with cURL. Curl automatically selects the HTTP GET request method unless you use the -X, --request, or -d command-line option. curl --cookie "token= curl. cURL is a powerful tool for transferring data with URLs, and integrating it with Java can simplify the process of interacting with web services. The Java Learn how to execute the curl command in Java to perform HTTP requests effectively with examples and best practices. curl-to-java This tool turns a curl command into Java Apache HttpClient Fluent code. net` package or external libraries like Apache HttpClient or OkHttp. See why 850,000 users use ReqBin online Curl Client for testing their APIs online! One of my coworkers made a good case for using CURL for automated testing — unfortunately, CURL doesn't understand the . curl is a command-line tool for transferring data, and it supports about 22 protocols, including HTTP. Dec 19, 2018 · I am trying to make a POST request from Java using curl. ba3a. Use our curl converter too to convert all your curl commands to Java Open the Network tab in the DevTools Right click (or Ctrl-click) a request Click "Copy" → "Copy as cURL" "Copy as cURL (bash)" Paste it in the curl command box above Nov 5, 2023 · How to test REST APIs in command line/terminal using curl command and its options. It does not guarantee high-fidelity conversions, but it's good enough for most API docs that have curl samples. Curl examples include sending a JSON file to a server, submitting a web form, user authentication, proxy support, saving the server response to disk, and more. These classes allow you to create HTTP requests similar to what you might do with cURL in a command-line environment. I could use Apache HttpClient for the same, but I want to try and use this curl cli. Free online curl converter tool. . I've my project specific question When trying to run command : curl -u username:password https:// I want to execute curl command from java code. jks format.