Curl post form data. To send data using another HTTP HTTP method, you use the -X command line option. POST requests are used to send data to a server. From JSON, form data, file uploads, authentication, and headers with real-world examples. 6k次，点赞6次，收藏32次。本文详细介绍了如何在C语言中使用libcurl库的curl_mime API来处理HTTP接口的form-data表单数据上传，包括创建表单、添加字段和文件数据，并提供了完整的代码实例。 curl传form-data数据，代码先锋网，一个为软件开发程序员提供代码片段和技术文章聚合的网站。 今天要讲的HTTP请求头的Content-Type字段，就是在curl发送请求的时候需要指定以何种方式来请求数据，按照postman的POST方法的分类，常用的有3类： 1、form-data 就是 multipart/form-data 使用表单的方式来发送数据 是curl采用的默认发送方式。 In this tutorial, we learned how to pipe data to cURL POST requests. cURL, which stands for ‘Client URL’, is a 文章浏览阅读1. Curl is designed to run smoothly on various platforms and architectures, from Linux and Windows to macOS and beyond. curl (カール）のオプションを解説します。 REST API のテスト時や、POST リクエストの送信時にご活用ください。 なお、今回オプションを確認した curl は以下のバージョンです。 curl 7. I am trying to scrape a website using PHP, CURL and POST method in order to submit a form before web scraping the page. I don't have problems talking to the If you use curl to POST to a site that immediately redirects you to another page, you can safely use --location (-L) and --data / --form together. What is Curl? Curl is a powerful command line tool used to send and receive data over various protocols using URL notation. You can pass the target URL during initialization or set it later by calling the curl_setopt () function with the "CURLOPT_URL" parameter. Test APIs, websites, and web services and validate server responses without installing additional software or plugins. Form Submission: Most online forms (like contact forms, registration forms, and login forms) use the POST method to submit form data to the server for processing. 文章浏览阅读4. 0版本时可能遇到的编译错误，并提到确保机器上curl版本一致的重要性。同时 get time post post JSON data using curl post a file using curl post form data using curl post XML put send PUT request delete send a DELETE request authorization basic auth credentials bearer token authorization header curl with a proxy content type set the content type for a curl request others speed test ssl send http header with curl request This makes curl POST data using the Content-Type multipart/form-data according to RFC 2388. Second i set different option for curl session by using curl_setopt method and some are optional. Curl now requires you to use -F for each field (not just the data to be uploaded!) Learn how to send multipart form data with curl including file uploads, form fields, and advanced multipart configurations for web scraping. **Simple Form Submission:** If you have a form with fields like CURL Guide for sending POST data form request with PHP and CURL Learn about creating multipart formposts with curl, including detailed instructions and examples for handling file uploads and data submissions efficiently. Dive into the intricacies of sending POST requests with cURL, a versatile command-line tool for transferring data, and explore advanced authentication methods and data handling techniques. In most cases, you do not need to set the method because it is determined from the command line options. -d vs -F Previous chapters talked about regular POST and multipart formpost, and in your typical command lines you do them with -d or -F. To send form data, a browser URL encodes it as a series of name=value pairs separated by ampersand (&) symbols. . The command is flexible and offers several options to send additional data with the request, encode the data, or send authentication credentials. And just like other cURL commands, POSTing form data is incredibly simple. File Upload: When you upload a file, whether it's an image, video, or document, the data is typically sent to the server using a POST request. The resulting string is sent as the body of a POST request. Learn to send JSON, XML, form data, and files. First, we need a server endpoint that would accept the requests originating from our end as a client. I use Ubuntu and installed cURL on it. Data for this request is located in a file. **Simple Form Submission:** If you have a form with fields like Using `curl` to submit a form with a POST request involves specifying the URL and the form data. Learn Curl with an extensive database of handpicked Curl examples. curl host:port/post-f cURL POST request examples including JSON data, file uploads, form data, and authentication. I wrote my POST code at the Java side. Changelog for 8. This is what I got so far: curl --data-ascii "content=derinhält&date=asdf 废话不多说啦，直接上代码： 这里需要注意的是： 要想以 x-www-form-urlencoded 方式发送，最关键是发送的数据格式。 方式from-data试发送的数据用的是array格式，而方式为 x-www-form-urlencoded 时需要用key=value& 最近curlのPOSTリクエストでAPIの検証をすることが多いのだけど、最初数あるオプションの使い分けがいまいちよくわかっていなかったのでまとめる。 -d オプション --dataを短く表記したもの。 First i initialize curl session by using curl_init method. To make curl URL-escape form data for you, use the --data-urlencode argument. Example Let’s imagine we have a text file called testfile. To upload a file with curl, use: -X POST: Explicitly sets the HTTP method to POST (optional for -F, as curl defaults to POST for form data). Давайте взглянем как будет выглядеть тело POST запроса multipart/form-data: おわりに cURL を使って POST 実行をする方法をまとめました。 XML 形式やファイルデータを送信したい場合は、 -H が Content-Type: application/xml や Content-Type: image/jpeg になりますので注意しましょう。 Form Submission: Most online forms (like contact forms, registration forms, and login forms) use the POST method to submit form data to the server for processing. Sep 18, 2023 · Learn how to post form data using Curl with -d or -F options and different content types. It is one of the best tools you can find on the Using `curl` to submit a form with a POST request involves specifying the URL and the form data. They are commonly used for submitting forms’ data, APIs, and file uploads. After a little research, I saw that for simple cli POST type requests send data to the web server which is popular http method for web interactions like search. It is one of the best tools you can find on the I used this syntax to post a file along with some parameters: curl -v -include --form "key1=value1" --form upload=localfilename URL The file is around 500K in size. Fourth i close the curl session by using curl_close which i have created. If you would like to send data to the server via a different HTTP method, you can use the -X command-line option. Most browsers will actually let you use a 'copy as curl' feature that gives you a complete curl command. When do you use which of them? As described in the chapters mentioned above, both these options send the specified data to the server. Jan 16, 2026 · curl simplifies creating multipart/form-data requests with the -F (or --form) flag. Third i execute curl session to get and send data over server by using curl_exec. See why 850,000 users use ReqBin online Curl Client for testing their APIs online! In PHP, curl can be used to submit data to an external URL, such as an API. Curl supports a wide range of protocols, including HTTPS, HTTPS, FTP, SFTP, and many others. These curl recipes show you how to send POST requests with curl. To post data in the multipart/form-data format, you can use the -F or --form command line option. Key takeaways cURL is a command-line tool used by developers to transfer data between clients and servers using various network protocols. Open your browser's network tab when submitting the form and see what values are actually being sent. Learn how to send POST requests using cURL with detailed examples, headers, and data payloads. Use curl to post data to a form? Asked 10 years ago Modified 6 years, 8 months ago Viewed 6k times Learn how to send POST requests with cURL using this comprehensive guide, including detailed instructions and examples for efficient data transfer. 35. This flag automatically handles boundary generation, part headers, and Content-Length calculation— if used correctly. sudo yum install curl sudo apt install curl 模拟 HTML 表单的请求 如果你需要使用 Curl 命令模拟表单的请求，可以使用 Curl 命令的 -F 选项创建POST请求并且使用 multipart/form-data 进行编码。 -F 选项允许你指定 multipart 的数据，并且 Curl 命令自动将内容类型设置为multipart/form-data 。 To post form data in PHP, you can use the built-in PHP Curl library. Introduction For many developers and system administrators, cURL is an invaluable tool for testing HTTP requests, including POST requests, and for uploading files to a server. I suspect that my naive approach doesn't work because of "technology" in the page that interferes with it. 在本文中，我们将使用cURL 命令和 multipart/form-data 选项演示如何上传文件到RESTful API。通过详细的示例，您将掌握如何构建multipart/form-data 请求，以及如何使用cURL将其发送到服务器。 If you're working with APIs, knowing how to send POST requests using cURL is important. To post HTML form data to the server in URL-encoded format using Curl/Bash, you need to make an HTTP POST request to the server and provide the HTML form data in the body of the Curl/Bash POST message in key=value format. Master API interactions with this simple command-line tool. I am trying to submit data to a form at work. One more great usage of cUrl for command line is POSTing form data to a server, especially while testing moderate to advanced form processing. As part of simulating what the front-end of an application will do while I work on the backend, I have been running various curl commands. txt that we want to POST to a server. A cURL POST refers to a POST request made using cURL. cURL is a versatile and widely used CLI that allows you to make HTTP requests. However, I want to test it with cURL. Step-by-step guide to interact with APIs, submit data, and automate web tasks efficiently. Jan 12, 2026 · Tired of guessing why your API calls keep failing? A cURL POST request is the fastest way to test endpoints and send data straight away from your command line. I am trying to post a JSON d This makes curl POST data using the Content-Type multipart/form-data according to RFC 2388. Copy-paste ready command reference. 0版本时可能遇到的编译错误，并提到确保机器上curl版本一致的重要性。同时 This option lets Curl emulate a filled-in form where a user has pressed the submit button. 9w次，点赞5次，收藏16次。本文详细介绍了如何使用CURL命令进行不同类型的HTTP请求，包括无文件上传、登陆表单提交、模拟表单文件上传及处理多表单元素等场景。文中还提供了实用的CURL选项和示例，帮助开发者高效完成网络请求任务。 This article will dive into the best practices for making POST requests using curl, including basic syntax, common parameters, data formats, security considerations, and examples and suggestions for real-world applications. It can be in a README on GitHub, for a demo on CodeSandbox, in code examples on Stack Overflow, or simply to test things locally. So, let’s visit webhook. seam?cid=812363 Seeing its source, the form looks like I am trying to scrape a website using PHP, CURL and POST method in order to submit a form before web scraping the page. The cURL CLI tool allows sending HTTP POST requests from the terminal to a web or application server. Here's a basic example: 1. By default, curl sends GET requests. 6k次，点赞6次，收藏32次。本文详细介绍了如何在C语言中使用libcurl库的curl_mime API来处理HTTP接口的form-data表单数据上传，包括创建表单、添加字段和文件数据，并提供了完整的代码实例。 当 curl 发送form-data数据的时候，又要post参数给请求，怎么办呢？ cur使用 -d 发送post参数，使用 -F 发送 form -data数据，可是同时使用的时候就会报错 Warning: You can only select one HTTP request! ，所以 同时使用-d 和 -F是行不通的。 解决办法： What is Curl? Curl is a popular command-line tool used by programmers and administrators that allows you to send requests to the server, submit web forms, and upload files. The basic cURL command looks like curl [options] -X POST [URL]. To send multipart form data, use the -F argument. Curl supports over 25+ protocols, including HTTP and HTTPS, has built-in support for web forms, SSL, user authentication, and HTTP Cookies. sdc. Learn how to send data from files using cURL with the --data and --form options. To add URL-encoded form data, use the -d argument. See the syntax, examples and code snippets for submitting HTML forms with Curl. Was easy to get just a file to be sent as Content-Type: 废话不多说啦，直接上代码： 这里需要注意的是： 要想以 x-www-form-urlencoded 方式发送，最关键是发送的数据格式。 方式from-data试发送的数据用的是array格式，而方式为 x-www-form-urlencoded 时需要用key=value& What is Curl? Curl is a popular command-line tool used by programmers and administrators that allows you to send requests to the server, submit web forms, and upload files. I'm new to PHP, and I'm developing a simple client for one of my subjects in college. The HTTP POST method is used to send data to the remote server. Here's how to POST in cURL. bsnl. The difference is in how the data is formatted over the wire. Basically, the webpage (sorry I cannot link The curl command supports the –data and –data-raw options to transfer data over POST requests. To change the Content-Type header that tells the web server what type of data you're sending, use the -H argument. It is one of the best tools you can find on the Run, save, and collaborate Curl commands directly from your browser. The general form of the curlcommand for making a POST request is as follows: The -Xoption specifies which HTTP request method will be used when communicating with the remote server. The main goal of this client, is to do CRUD into a JAVA API. But what if the API only accepts JSON data? Master sending POST requests with cURL in 2026. Other packages are kindly provided by external persons and organizations. 2k次。文章介绍了在使用curl7. 78. This causes Curl to POST data using the `Content-Type` multipart/form-data, which supports file uploading. Этот метод хорошо описан в RFC7578. It is one of the best tools you can find on the A POST request in cURL is how you send data to a web server. When making a POST request with cURL, you're sending data to a server or an API. コマンドラインからHTTPのデータ送信をするのに便利な curl コマンド。 筆者は頻繁に利用するわりに、コマンドを記憶しておらず、いつもコピペに頼っているので、そんな自分のためにも、ここに利用方法をまとめておきたいと思います。 本項ではPOSTメソッドでデータを送信する方法をまとめ How to Send a POST Request With cURL? Sending a POST request with cURL is a common task in web development and API interactions. To make it send POST requests, use the -X POST command line argument. The form data is passed as key/value pairs with -d curl command-line parameter. 最近curlのPOSTリクエストでAPIの検証をすることが多いのだけど、最初数あるオプションの使い分けがいまいちよくわかっていなかったのでまとめる。 -d オプション --dataを短く表記したもの。 JSONPlaceholder is a free online REST API that you can use whenever you need some fake data. What is Curl? Curl is a popular command-line tool used by programmers and administrators that allows you to send requests to the server, submit web forms, and upload files. HTTPリクエストの送り方について、curl、form送信、Pythonを用いた具体的な方法を解説します。 文章浏览阅读2. curl only uses POST in the first request, and then revert to GET in the following operations. These curl recipes show you how to add POST data to curl requests. When you use a file upload in the form, you use the multipart/form-data encoding instead, which has a different format. I need to make a POST request via cURL from the command line. First of all, I see c Master cURL POST requests with clear examples for JSON, forms, files, headers, and authentication + tips for testing and debugging APIs fast. 0, Released on the 2026-01-07. Source Archives curl 8. The Curl command would look something like this: asked Feb 25, 2012 at 17:06 Prakhar 3,536 18 47 61 possible duplicate of Using cURL to POST data to a form – nlucaroni Feb 26, 2012 at 3:19 I am trying to post an image with cURL in PHP using multipart/form-data header since API that I am sending to is expecting image to be sent as multi-part form. HTTP 的 POST 请求通常是用于提交数据，可以通过这篇文章来了解各种提交方式：四种常见的 POST 提交数据方式。做 Web 后端开发时，不可避免地要自己给自己发请求来调试接口，这里要记录的内容是如何使用命令行工具 curl 来进行各种方式的 POST 请求。 Multipart form-data形式（ブラウザでファイルを送信するのと同じ形式）で、CURLでPOSTしたい（何度も忘れてしまうのでメモ） 画像 アットマークを付けるとファイルを指定できる Единственный вариант решения — это передача файла составным запросом с помощью multipart/form-data. When making a POST request, cURL allows you to send data to a server, often to submit forms or interact with APIs. I know that via PUT this could be done with the --upload-file option. 0. 文章浏览阅读6. To post form data in PHP, you can use the built-in PHP Curl library. You need to initialize the PHP Curl library first by calling the curl_init () function. The problem I am experiencing is that there is connected with POST method: no data is submitted to the server, so the scraped webpage doesn't contain what I am looking for. 18. curl sends exactly the bytes you give it (except that when reading from a file. site and get the server Curl post is a powerful, lightweight tool that simplifies data submission tasks across API testing, form automation, file uploads, and system integration. Further, w e explored some of the popular options, such as –data, —data-binary, and —json, while solving our use case. 0 5 I'm trying to use cURL to post data to the form on this URL: http://dq. If you use curl to POST to a site that immediately redirects you to another page, you can safely use --location (-L) and --data / --form together. While the server might assume that the data is encoded in some special way, curl does not encode or change the data you tell it to send. How do you pass $_POST values to a page using cURL? The curl project mostly provides source packages. Now you can display response data. For SMTP and IMAP protocols, this composes a multipart mail message to transmit. How to create PHP curl post and other request methods with a basic introduction and more use case examples. It's commonly used for submitting forms, interacting with APIs, or creating new resources on the server. co. -d skips over the carriage returns and newlines so you need to use --data-binary if you rather intend them to be included in the What is Curl? Curl is a popular command-line tool used by programmers and administrators that allows you to send requests to the server, submit web forms, and upload files. cURL POST Request guide. This guide will show you how to use cURL to make POST requests through practical examples. 5w次，点赞3次，收藏9次。本文介绍如何使用curl工具模拟各种类型的表单提交，包括简单的键值对提交、带有文件上传的表单提交以及复杂的含有多种表单元素的提交。文章详细讲解了不同场景下使用的curl选项，例如使用-d或-F选项等。 In this tutorial, we learned how to pipe data to cURL POST requests. 文章浏览阅读2. Curl works on Linux, Mac, Windows. Most of the time, the receiving end is written to expect a Curl POST Form Example An example of a Curl command to post a form in a URL-encoded format. This guide shows you how to handle this. the json format requires a bunch of extra quoting curl will send form urlencoded by default, so for json the Content-Type header must be explicitly set This gist provides examples for using both formats, including how to use sample data files in either format with your curl requests. To do the same with curl, use the -d (or --data) argument, like this: Oct 1, 2013 · Chances are that if you are trying to do a form upload, you will most likely want to use the @ prefix to upload the file as a binary stream rather than < which uploads the contents of the file as text. We provide a quick explanation of what POST request is. in/dq/reversePhone. -d (--data) と -F (--Form) curl -X POST -d curl の POST オプションを -d (--data) とした場合、MIME type は application/x-www-form-urlencoded になり I would like to POST (send) some form data to a webserver using cURL on a terminal-prompt. In this article, we provide a tutorial on cURL POST requests. In this section, let’s understand the default behavior of using curl with these options. To add POST data to the request, use the -d argument. Jan 11, 2024 · Learn how to send data from files using cURL with the --data and --form options. I want to test my Spring REST application with cURL. yakv, goxrn, wesuaf, eahmh4, 70ka2c, av9eq, ennj, t1ni38, wbfx, eark3,