问题描述：Playframework项目activator start启动后会自动停止

解决步骤：

1.在conf/application.conf文件添加：application.secret="staging"

2.启动是使用签名：activator start -Dapplication.secret="staging"

官网描述段落：

The application secret

Before you run your application in production mode, you need to generate an application secret. To read more about how to do this, see Configuring the application secret. In the examples below, you will see the use of -Dapplication.secret=abcdefghijk.

You must generate your own secret to use here.

Using the start command

The easiest way to start an application in production mode is to use the start command from the Play console. This requires a Play installation on the server.

[my-first-app] $ start -Dapplication.secret=abcdefghijk