Continued Java time period ---- sevlet jump

The difference between the requestdispatcher. Forward () method and httpservletresponse. sendredirect () method is:

Requestdispatcher. Forward () is only the redirection of control in the container. The redirection address is not displayed in the address bar of the client browser;

Httpservletresponse. sendredirect () is a complete jump. the browser will get the jump address and resend the request link. In this way, the link address after the jump is displayed in the address bar of the browser.

Therefore, the former is more efficient. When the former can meet the needs, try to use the request dispatcher. Forward () method, and this will also help to hide the actual link.

 

To maintain some request information on the current page, you need to save the request object with hidden input.