The portlet must not modify session state or backend state as a result of the invocation of a render link.

Portlet一定不能因为调用了呈现链接而修改会话状态或后端状态。

youdao

The portlet must not modify session state or backend state as a result of the invocation of a render link.

Portlet一定不能因为调用了呈现链接而修改会话状态或后端状态。

youdao