webhook_url="https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=3fea2b9c-07d1-49aa-aae5-e52********"

message="hello"

curl $webhook_url -H 'Content-Type: application/json' -X POST -d '{"msgtype": "text", "text": {"content": "$message"}}'

实际text，内容为$message，而不是hello