In the development of RAP eclipse, I want to record the last visit of the page, and the next time to open the application is the last visit to the page. which API I need to use the RAP eclipse to develop ？
When it's only about reloading the application, the BrowserNavigation might help. For example, this online demo uses this service to set an entry into the browser history for every page that is opened. When you select a page in the menu and then reload, the application will load the same page. This demo is part of the RAP project, you can have a look at the source code.
If this solution is not sufficient, the RAP Developer's Guide also contains introduction to storing data in a RAP application.