How to get response from curl command in java example. Congratulations, you completed your first REST API test.

How to get response from curl command in java example Can anyone guide me what mistake am I doing? Jun 5, 2014 · Take a look at http://docs. Apr 29, 2024 · Learn cURL in Python, Java, and PHP for web scraping. Feb 21, 2023 · Curl commands work without user interaction and are therefore ideal for use in automation scenarios. I tried to ping the URL directly from the browser, I am able to get response successfully, I don't understand what is the wrong with the command. Jersey is an open source framework for developing REST web services that provide support for JAX-RS APIs and serves as a JAX-RS reference implementation. One of the most versatile and powerful tools for this purpose is cURL. I wrote my POST code at the Java side. Jun 29, 2017 · Everything starting with -d is a command line argument to the cUrl executable. js. lang. Jul 23, 2025 · Curl is a command-line tool for making web requests, often used directly from the terminal. Understand how to use HttpURLConnection or Apache HttpClient. Jan 15, 2021 · I'm thinking I have to wrap my curl command somehow to maybe output the response in a variable, or? But I don't know how to capture the curl response, parse it, and check the status code to determine if curl was successful or not. Introducing Curl - The Command-Line Swiss Army Knife Curl is a command-line tool for transferring data with URL syntax, supporting various protocols including HTTP and HTTPS. This combination makes it a very good ad-hoc tool for testing our REST services. A complete step-by-step guide for beginners and developers Learn how to use Java Curl for making HTTP requests effectively with practical examples and tips. Jan 19, 2018 · With AEM, you can use cURL commands to modify repository, download json, access OSGi information etc. Learn how to effectively use cURL in Java, including installation options and code examples. 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. Curl automatically selects the HTTP GET request method unless you use the -X, --request, or -d command-line option. In this tutorial, we will show you how to use the curl tool through practical examples and detailed explanations of the most common curl options. It is extremely versatile and supports various protocols including HTTP, FTP, SMTP, and many others. The following command will perform the request and output the response body: If the output provides information about the version of curl, that means curl is installed. tech fetches IP address details in JSON format, just like visiting the site in a browser. Supported languages include JavaScript, Python, PHP, Go, Ruby, C#, and Java. Tagged with curl, api, beginners, webdev. curl examples for testing CRUD REST APIs. bookmarks. Java code for Convert Curl HTTP Request Example This Java code snippet was generated automatically for the Convert Curl HTTP Request example. Here is a sample command that sends a GET request to our hosted version of HTTPBin and returns the response in JSON format: curl https://httpbin. Learn how to execute the curl command in Java to perform HTTP requests effectively with examples and best practices. The most common approach is using the HttpURLConnection class or libraries like Apache HttpClient or OkHttp for more complex scenarios. Learn how to effectively convert cURL requests into HTTP requests in Java with detailed examples and common debugging tips. In this article, we will learn how to make REST API requests using Curl. Apr 6, 2010 · I want to use curl in java. What is cURL? cURL is an open-source command-line tool used to transfer data to and from a server. I use Ubuntu and installed cURL on it. Learn how to run cURL commands within your Android applications using Java. However, I want to test it with cURL. Oct 9, 2025 · curl (short for “Client URL”) is a lightweight yet powerful command-line tool for transferring data across URLs. Advanced Usage About curl What is curl? curl is a command-line tool for transferring data with URLs. Learn how to convert curl commands to Java using HttpURLConnection and Apache HttpClient in this comprehensive guide. Basically I want to set a "GET" request to a remote REST service which gives me json data as a response via curl. This appendix contains a list of guides that demonstrate interacting with a Spring Data REST service over cURL: curl. The Curl to Angular Converter is a tool that allows users to convert cURL requests into equivalent Java code. To add additional HTTP headers, use the -H command line option. Free online curl converter tool. For example, create a personal access token or a GitHub App user access token. Dec 1, 2023 · You can add as many headers to the Curl request as you need. Essentially, Curl prints the web response to the terminal. HTTP GET request The most basic command you can execute with cURL is an HTTP GET request. Sep 25, 2024 · Use cases to learn how to properly send cURL GET requests. scrapingbee. Mar 16, 2025 · 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. Since there can be an HTTP request and a separate CONNECT request in the same curl transfer, we often separate the CONNECT response (from the proxy) from the remote server's HTTP response. The Java code was automatically generated for the Curl Commands example. How can I call the web service in Linux with cURL? Mar 8, 2020 · Learn how to create a simple Bash script that uses the cURL command to call an API and print the response code in the terminal. Ideal for system administrators and developers aiming to automate API interactions. Nov 27, 2019 · Curl is a command-line utility for transferring data from or to a server designed to work without user interaction. com Explanation: Verbose mode outputs all the details, including the headers sent, the data being transferred, and any other information necessary for debugging. The Java code was automatically generated for the Curl JSON Request example. URLConnection classes. I want to use this curl command in java & parse the JSON response in java. html or take a here Feb 7, 2025 · Interacting with web services and APIs is a vital skill for developers, system administrators, and anyone who needs to retrieve data from the internet. ) It is quite simple because GET is the default request method used by cURL. Below is a step-by-step guide on how to achieve this conversion: Learn how to perform cURL operations in Java to fetch web page content, including code examples and common debugging tips. My doubt is, any server side code changes needed to prepare the response to send back to caller? If so, Please suggest me with the code (Java) & also how to make request. Click Run to execute the Curl JSON Request Example online and see the result. This Mar 13, 2025 · Learn how to use cURL in JavaScript with multiple methods. It's a versatile tool for downloading files, testing APIs, and more. Converting cURL commands to Java code is essential for Java developers who need to make HTTP requests programmatically. Of course, there is much more in API testing, but this is the basic workflow. In this Curl header example, we send the X-Custom-Header and Content-Type request headers to the ReqBin echo URL. Nov 29, 2023 · Curl is a command-line utility for transferring data to or from a remote server using one of the supported protocols. The HEAD request is very similar to a GET request, except that the server only returns HTTP headers without a response body. Feb 20, 2024 · API testing ensures that the endpoints, request-response mechanisms, data formats, and authentication methods are all functioning correctly. Discover best practices, and proxy integration steps to enhance web scraping, API requests, and automation. Feb 2, 2024 · Here is a simple example of how to use cURL in Java: The above code executes the cURL command with a get request on the given server link. The Java code was automatically generated for the Curl Send Header example. In this guide, Sep 4, 2023 · Curl by example: Interactive guide Curl (c lient for URL s) is a tool for client-side internet transfers (uploads and downloads) using a specific protocol (such as HTTP, FTP or IMAP), where the endpoint is identified by a URL. A comprehensive guide with examples and best practices. Why cURL? Try using curl to GET a web page Requests and responses include headers too Query strings and parameters Common curl commands related to REST Example curl command curl Friendly tool recommendation Why curl? One of the advantages of REST APIs is that you To make an HTTP HEAD request with Curl, you need to use the -I or --head command-line parameter. Step-by-step guide with code examples. Converting a curl command into Java using RestTemplate involves translating each part of the curl command into the corresponding HTTP request components in Java. In this tutorial, we’ll look at how we can set up a Jersey response Jul 14, 2023 · To make a GET request using Curl, run the curl command followed by the target URL. Usually, I just need to enter the command in the terminal and press the return key. Jul 5, 2023 · Using cUrl command with -w, -s and -o options For Get Method Use the -w or --write-out option in combination with the %{http_code} format specifier to get curl response code in Bash for get method. Whether you need to inspect an API, download files, automate web scraping, work with remote servers, curl has you covered. I am trying to post a JSON d Nov 4, 2024 · If you’re troubleshooting issues with a request, use the -v (verbose) flag to get detailed information about the request and response: curl -v https://example. 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 Explore curl command examples and converted code samples. The target URL is passed as the first command-line option. The application/json request header is passed to the server with the curl -H command-line option and tells the server that the client is expecting JSON in response. The CONNECT is also an HTTP request so it gets response codes in the same numeric range and you can use --write-out to extract that code as well. Jan 17, 2023 · The -H command line switch sends an Accept: application/xml header to the server and tells the server that the Curl client expects an XML response. com/anything?json \ -H "Accept: application/json" It is quite simple because GET is the default request method used by cURL. Why curl? Try using curl to GET a web page Requests and responses include headers too Unpacking the weather API curl request Query strings and parameters Common curl commands related to REST Example curl command Quiz yourself Why curl? One of the I have a server application written in ASP. It is widely employed for testing and interacting with APIs, enabling actions like data retrieval or submission on remote servers. 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. Learn to use cURL for executing HTTP requests, and how to prettify JSON responses directly in the command line. Apr 26, 2017 · The curl is doing a POST request where you are doing a GET request form java. Master cURL GET and POST requests to gather data from any website. The API chosen supports www. It is frequently used in web development to automate web scraping operations, test APIs, and retrieve files. Jul 19, 2025 · Learn how to master API requests using curl and JavaScript in this comprehensive guide. Snippet to download a json file via cURL: While majority of the AEM’s content information can be downloaded via HTTP connection, cURL command can be used to download information from AEM’s OSGi console. Using the curl Command The curl command is used to transfer data from or to a server using various protocols like HTTP, HTTPS, FTP, and more. When no parameters are specified on the command line, Curl sends an HTTP GET request, and the command prints the HTTP response of the corresponding URL. com/xyz/abc from the mac terminal , I get my desired json format data. Tagged with rest, api, curl, beginners. Developers use Curl to test APIs, send requests to the server, view server response headers, and load-test APIs. I want to test my Spring REST application with cURL. It supports nearly every protocol you can think of—HTTP, HTTPS, FTP, SCP, SFTP, and more. . ba3a. In this way, you can test REST APIs to make sure the APIs are working well. Discover the powerful features of Apidog, and enhance your development skills with our step-by-step tutorial. curl is a command-line tool for transferring data, and it supports about 22 protocols, including HTTP. This is only giving me the status code, I want to get the actual server response data as well (Get the JSON data AND the response code) 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. 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 I use curl to get http headers to find http status code and also return response. Jan 8, 2025 · Explore how to send GET requests with cURL. But running the same command from java code , I get But it returns no output. You can also save the JSON response to a file by appending the -o option followed by the filename: In this case, the JSON response will be saved to a file named output. Without this header, the server may automatically select a different data type for the response and return the data in a different format than XML. So before moving on, let’s pause a bit and learn more about cURL. Learn how to use Curl to post raw body data in Java applications effectively. Common curl Options -X, --request: Specify request method (GET, POST, etc. Mar 26, 2025 · This tutorial gives a brief overview of testing a REST API using curl. Jan 8, 2024 · To simplify the development of REST web services and their clients in Java, a standard and portable implementation of JAX-RS API has been designed which is called Jersey. sh. For more information, see the curl project download page. The -I command-line parameter tells Curl to send an HTTP HEAD request to receive only HTTP headers. Sending POST Request 1. I want to execute curl command from java code. In this beginner curl tutorial, I‘ll go over: What curl is and why it‘s useful Making GET and POST […] Converting a cURL command that retrieves a token to Java using Spring's RestTemplate involves translating the HTTP request parameters, headers, and handling the response. We also need to provide the system path for cURL; otherwise, it will not work. json in the current directory. Feb 6, 2025 · The curl command is, in fact, the go-to tool for many Java and Spring developers working in web applications and consuming data from the secured RESTful Web Services. Nov 20, 2025 · Download PDF Almost every API shows how to interact with the API using curl. The -H option sets the Content-Type header (GraphQL APIs send their response in the JSON format) as well as the Authorization header (if your API requires an authorization Apr 8, 2024 · Example Tutorial You can use either curl or wget command to send HTTP requests from UNIX or Linux operating system. However, I don't know how it works in Python. It supports numerous protocols including HTTP, HTTPS, FTP, FTPS, SCP, SFTP, LDAP, and more. You'll have to implement in Java whatever -d does with the value after it. Also, in many cases, you won't have to specify the Accept header because the server will return JSON by default. Jul 23, 2025 · You will get a response in the response tab below with status code 200 meaning the response was successful. Here’s a comprehensive guide on how to achieve this, along with an example. Jul 14, 2023 · To make a GET request using Curl, run the curl command followed by the target URL. com/javase/7/docs/api/java/lang/ProcessBuilder. In this Curl POST JSON data example, we send JSON to the ReqBin echo URL. dev. If not, how we need to make http request to grpc? Working example is much appreciated. So before moving on, let’s pause a bit and learn more about curl. Jun 15, 2016 · I have a curl command that gives a JSON response. The command shows below: Dec 16, 2024 · Explore 20 essential curl commands for developers and sysadmins. This article will go over the 12 most essential Curl commands for day-to-day use for making requests over HTTP/HTTPS protocols. Nov 5, 2023 · How to test REST APIs in command line/terminal using curl command and its options. Learn more. I have already seen couple of documents, stackoverflow questions regarding the same. Apr 21, 2023 · Introduction cURL is a well-known command-line utility for transmitting data over multiple protocols such as HTTP, FTP, and SFTP. Find out how to use cURL, its parameters, and the best way to communicate with APIs. oracle. curl is widely used for testing, debugging, and interacting with APIs and web services. Both commands allow you to send GET and POST requests, which means you can also call REST web services. Dec 3, 2024 · Curl is a powerful command line tool that lets you make HTTP requests from the terminal. Is it possible to do so?? With below Java code: public static voi In this tutorial, you have learned how to utilize cURL in Java for making REST API calls. Curl is a networking tool used to transfer data between a server and the curl client using protocols like HTTP, FTP, TELNET, and SCP. For example, curl -L ip. This guide walks you through the process, explaining each component of the cURL command and how to implement it in Java using libraries like HttpURLConnection or Apache HttpClient. net. Top 12 Curl Commands with Examples [Java Aug 23, 2019 · I would like to run this specific curl command with a HTTP POST request in java 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. I have a Java web application, which runs on Linux and exposes WebServices. When you run this cURL command, it will send a GET request to the specified URL and print the JSON response to the terminal. These classes allow you to create HTTP requests similar to what you might do with cURL in a command-line environment. I want to execute a curl command in Python. This guide details the simple steps with typical scenarios like passing parameters, headers, and JSON responses. If you get a message similar to command not found: curl, you need to download and install curl. Apr 16, 2025 · In this example, I demonstrated both HTTP Get and Post cURL requests and converted them to Java HTTP Requests with Java built-in HttpClient, Apache HttpClient5, OkHttpClient, and Spring WebClient. Perfect for developers looking to streamline their API workflows. Sep 1, 2023 · To make an HTTP HEAD request with Curl, you need to use the -I or --head command-line parameter. Convert curl commands to Python, JavaScript, PHP, Java, Ruby, C#, Go, Swift, and Rust code instantly. Feb 10, 2023 · Learn how to use curl to make quick and easy REST API requests from the command line in this beginner-friendly guide. Congratulations, you completed your first REST API test. Aug 1, 2021 · cURL HTTP GET request examples with my most frequently used command-line options. Curl runs on 92 operating systems and has over 20 billion installations worldwide. Covering installation on various Linux distributions, the article delves deep into basics and advanced uses, including GET and POST requests, handling API responses with tools like `jq`, and security practices. Jun 5, 2024 · Using cURL in Java can be achieved by utilizing the java. A cURL API call is a command using the cURL tool to make HTTP requests to a specified endpoint, commonly a web service or API. I am using curl in a bash script to fetch the response of a service as below, Learn how to run cURL commands in Java with examples, explanations, and common pitfalls. Dec 7, 2023 · This example demonstrates the simplest Curl command. I get the http headers with the command Oct 20, 2023 · To get JSON with Curl, you need to make an HTTP GET request and provide the Accept: application/json request header. This tutorial will look at using cURL with JavaScript and Node. NET on Windows that provides a web service. URL and java. It is Apr 9, 2024 · Below is a complete example of a cURL command that queries an HTTP GraphQL API from the command line: In the above command, the -X option specifies the POST request method. May 26, 2021 · We can use `curl -v` or `curl -verbose` to display the request headers and response headers in the cURL command. 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. Mar 7, 2020 · This post presents examples of making CRUD HTTP calls against a backend REST API. A detailed yet clear step-by-step tutorial on using cURL with REST API. We’ll talk about the following topics: What is cURL in JavaScript? Is cURL in JavaScript Jul 14, 2023 · To make a GET request using Curl, run the curl command followed by the target URL. Is curl built-in with Java or I have to install it from any 3rd party source to use with Java? If it needs to be separately installed, how can that be done? Apr 5, 2025 · Explore how to translate a simple cURL command into Java code using various libraries and tools. Jan 19, 2024 · The response Content-Type header specifies the type of data returned by the server. Click Run to execute the Curl Send Header Request online and see the results. ProcessBuilder is our saviour. But it is not giving the desired result, I am trying to run this Dec 26, 2024 · Almost every API shows how to interact with the API using cURL. We walked through GET and POST requests and discussed common pitfalls and their solutions. Learn how to perform cURL operations in Java with examples and best practices. Sending JSON with Curl [Java Code]Run Jun 13, 2019 · curl -X POST -k https://localhost:10000/v1/echo -d '{"Key": "Value"}' After making above request, not able to get the proper response. From GET requests to file uploads and HTTP headers, this guide covers practical examples to enhance your command-line skills. Learn common HTTP request patterns for GET, POST, PUT, DELETE with authentication. Create an access token. Learn to use `curl` in bash scripts for API calls with this comprehensive guide on LinuxBash. Nov 22, 2025 · Learn how to send GET requests with cURL using simple commands, flags, and real examples. curl -u username:password https://example. Check it out and implement the gathered insights to future projects. Jan 25, 2024 · In this tutorial, we’re going to look at how to use the curl tool inside a Java program. Follow this example about how to make a POST request using java (with http-client). Java provides several libraries that allow you to make HTTP requests, similar to the functionality of the curl command. to is a free developer tool that helps you convert curl commands to code in multiple programming languages. ixloz duoz peyq chf fvhtur ggbqydjb lhbxyo yvzabr efg xavu jru hxpluc jytjggij lclccq iwkn