[Http] Still using postman? Does curl not smell

What is curl? c can be regarded as a client, and url (Uniform Resource Locator) is a uniform resource locator. Curl can perform network transmission for the specified URL. It is so convenient, powerful and reliable in shells and scripts.

Curl supports n multi-protocols (ftp, smtp, etc.). This article only discusses related topics related to http based on the command line. Using curl can easily replace graphical interface tools such as postman. Let's look at using curl to initiate an http request.

1. Initiate an http get request

curl http://localhost:8080/demo

2. Use -v to display detailed information about the request and response

curl -v http://localhost:8080/demo

3. Use -G -d to initiate a get request and send data

curl -G -d "hello" -v http://1ocalhost:8080/demo

4. Use -I to initiate a head request

curl -I http://localhost:8080/demo

5. Use -i to respond with header information

curl -i http://localhost:8080/demo

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above is a basic get request example, let's look at using curl to initiate a request that requires login authentication.
6. Use -u to provide username and password

curl -u 'admin:admin' http://localhost:9002/actuator

7.curl automatically recognizes the username and password

curl http://admin:admin@localhost:9002/actuator

8. Use -u to enter only the user name and you will be prompted to enter the password

curl -u 'admin' http://localhost:9002/actuator

9. Use -c to save the server response cookie

curl -u 'admin:admin' -c cookie.txt http://localhost:9002/actuator

10. Use -b to carry cookie information to initiate an http request

curl -b cookie.txt http://localhost:9002/actuator

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Let’s take a look at using curl to send a post request.
11. Use -d to send http post request data -H to specify the head line header information

curl -d "{'name':'star','age':20}" -H  "Content-type:application/json"  http://localhost:8080/demo/post

12. Use @reference file to contain the requested data file

curl -d @post_data -H "Content-type:application/json" http://localhost:8080/demo/post

13. Use -F option post to upload files

curl -F '[email protected]'http://localhost:8080/demo/file

14. Use --data-urlencode encoding to submit data

curl --data-urlencode 'name=码农小麦' -v http://localhost:8080/demo/urlencode

15. Use -d to submit request data

curl  -d  'AGRICULTURAL wheat code name ='  -d  'Welcome to tease Content ='  -v HTTP: // localhos T: 8080 / Demo / POST 
curl  -d  'AGRICULTURAL wheat code name = & content = Welcome to tease'  -v http://localhos t:8080 /demo/post

The above are examples of common command-line usage of curl, which can fully cope with daily development and test scenarios, as well as script-related http request functions. For more usage methods, see curl --help.