get BSP URL parameters – page redirector

Background: I had to write these BSP’s a few times. Once was for a plain vanilla redirector that got its values pushed from another application and a different time is when I needed to create a RESTful web service.

What: BSP application ZBSP_REDIR (SAPlink nugget)

How to use:

Under the Event Handler tab within your BSP. Select the “OnRequest” method.

"For this example, we will be pushing in appname
 "  then we will use our make believe business logic
 "  and generate a redirection URL based off the
 "  appname.

 "     Name value pair's
 DATA: lt_HTTPNVP TYPE TIHTTPNVP,
       ls_HTTPNVP TYPE IHTTPNVP.

 "Get the URL variables and save them into the table.
 runtime->server->request->GET_FORM_FIELDS( CHANGING FIELDS = lt_HTTPNVP ).

 "Get the variable from the table
 READ TABLE lt_HTTPNVP INTO ls_HTTPNVP WITH TABLE KEY NAME = 'appname'.

 "Save to the Page Attribute which will hold the redirection URL
 CASE ls_HTTPNVP-VALUE.
   WHEN 'redirect_example'.
      redirection_url = 'http://markszcz.net/get-bsp-url-parameters-page-redirector'.
   WHEN OTHERS.
     redirection_url = 'http://markszcz.net/'.
 ENDCASE.

The URL I used to test the was    http://***/sap/bc/bsp/sap/zbsp_redir/index.htm?appname=redirect_example