right.rb

uri = URI.parse("https://oapi.dingtalk.com/robot/send")
https = Net::HTTP.new(uri.host, uri.port)
https.use_ssl = true
req = Net::HTTP::Post.new(uri.path.concat("?access_token=#{setting_chat.token}"))
req['Content-Type'] = 'application/json'
# req['charset'] = 'UTF-8'
req.body = {
            "msgtype": "text", 
            "text": {
                "content": "Hello world"
            }
        }.to_json
res = https.request(req)