发送json

curl 'https://example.com/test' \
-H "Content-Type:application/json" \
-X POST \
-d '{"code":200,"message":"success"}'

如果json数据在文件test.json中

curl 'https://example.com/test' \
-H "Content-Type:application/json" \
-X POST \
-d '@/test.json'

post 发送x-www-form-urlencoded数据

curl -X POST http://127.0.0.1:8442/test -H "Content-Type: application/x-www-form-urlencoded" -d "c=WebSocket&a=kick&conn_id=2"

上传文件

curl -X POST -F 'image=@/path/to/pictures/picture.jpg' http://domain.tld/upload

如果使用PHP代码打印出$_FILES变量

Array(
  "image": array(
    "name" => "picture.jpg"
    "type" => "image/jpeg",
    "tmp_name" => "/path/on/server/to/tmp/phprj5rkG",
    "error" => 0,
    "size" => 174476
  )
)

使用curl发送multipart/form-data

curl -v -F key1=value1 -F upload=@localfilename URL

来自这里
https://stackoverflow.com/questions/53724134/use-curl-to-post-multipart-form-data-file-and-lots-of-key-value-pairs

参考

https://reqbin.com/req/c-sma2qrvp/curl-post-form-example#:~:text=To%20post%20form%20data%20to,%2Dform%2Durlencoded%20content%20type.