Java gets the URL method difference for request

1, Request.getrequesturl ()

Return the full URL, Includes the HTTP protocol, port number, servlet name, and mapping path, but it does not contain request parameters.
2, Request.getrequesturi ()

GET request A partial value of the URL, and the Web container has no decode

3, Request.getcontextpath ()  
Returns the context of the request.

4, Request.getservletpath ()  
Returns a partial URL to the calling servlet.

5, Request.getquerystring ()  
Returns the query string after the URL path

Example:

current url:http:// LOCALHOST:8080/CARSILOGCENTER_NEW/IDPSTAT.JSP?ACTION=IDP.SPTOPN

request.getRequestURL ()   http://localhost:8080/CarsiLogCenter_new/idpstat.jsp
Request.getrequesturi ()/carsilogcenter_new/idpstat.jsp
Request.getcontextpath ()/carsilogcenter_new
Request.getservletpath ()/idpstat.jsp

Request.getquerystring () action=idp.sptopn

Source: http://blog.csdn.net/gris0509/article/details/6340987

From for notes (Wiz)

Java gets the URL method difference for request