Windows: curl with json data on the command line

"I searched for solutions and found alternatives such as put json data in files, but I cannot use it for some reasons"

This should work, with hello.json in temp. The @ is requried.

c:\temp>curl -v -X PUT  \ 
             --data "@hello.json"  \
             -H "Content-Type:application/json"  \
             http://localhost:8080/api/myresource

Windows's cmd doesn't support strings with single quotes. Use " and escape the inner ones with \".