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How to make a POST request via cURL?
The path to the file needs to be preceded by an @ symbol, so curl knows to read from a file. I need to make a POST request via Curl from the command line. Data for this request is located in a file…
When to use curl to send data to a remote server?
The HTTP POST method is used to send data to the remote server. The general form of the curl command for making a POST request is as follows: The -X option specifies which HTTP request method will be used when communicating with the remote server. The type of the request body is indicated by its Content-Type header.
How to use curl to read data from a file?
You can use this to read the values from a JSON file or send it as raw. Suppose you want to make requests in the command-line using cURL, but you have the data to send stored in a file. You can use the Content-Type to specify the media type and then pass the file path containing the data. For this example, I will illustrate using a JSON object.
How to set your content type in curl?
You need to set your content-type to application/json. But -d (or –data) sends the Content-Type application/x-www-form-urlencoded, which is not accepted on Spring’s side. Looking at the curl man page, I think you can use -H (or –header ): Note that -request POST is optional if you use -d, as the -d flag implies a POST request.
How to skip existing files when downloading with Curl?
The -J ( –remote-header-name) basically tells the -O ( –remote-name) option to use the server-specified Content-Disposition filename instead of extracting a filename from the URL. In that way the curl doesn’t really know what file name the server will return, so it may ignore the existing file for a safety precaution.
How to use curl to read from a file?
In the example above, -i prints out all the headers so that you can see what’s going on, and -X POST makes it explicit that this is a post. Both of these can be safely omitted without changing the behaviour on the wire. The path to the file needs to be preceded by an @ symbol, so curl knows to read from a file.
How does curl save files to same name?
Instead of displaying the contents of the file, curl displays a text-based progress meter and saves the file to the same name as the remote file’s name. You can check on things with the cat command: The file contains the same contents you saw previously: