Javaweb Request forwarding and request redirect understanding

Request Forwarding Use method

Httpservletrequest.getrequestdispatcher ("login.jsp"). Forward (HttpServletRequest, servletresponse);

This request process is done exactly once by the requests object.

We can use filter to intercept the user's request, and then use this request to access other pages, when the server returns information to the browser when the request and response end.

Procedure similar to request request request response

Three request is the same object

Request Redirection Use Method

Httpservletresponse.sendredirect ("http://192.168.101.243:8881/simpleshop_mvc/jsp/login.jsp");

Request redirection is the interception of this request by the browser, which is then redirected again by browsing to initiate a request to access the redirected data.

The process is similar to request response request response

Two request is two objects

Javaweb Request forwarding and request redirect understanding