How to print error messages in browser?

Question

When I visit a jsp file in browser, there's some errors in the jsp file, so the browser returns
The page cannot be displayed
There is a problem with the page you are trying to reach and it cannot be displayed.
I want the detail error messages, so I can debug my problem. How to print error message in browser or find the message in some log file?

Answer 1

Hi Kanaraja,
Thanks for your answer. I need to get certain information from the list. So, I use LIST_To_ASCII FM. However, may I know the ascii_tab should be type to what? And after this FM, do I have to use another FM to display the ascii list?
data ABAPLIST type ABAPLIST OCCURS 0.
SUBMIT  RPCALCU0 VIA SELECTION-SCREEN
with PNPXABKR = 'US'
with PNPTIMRA = 'X'
with PNPPABRP = '10'
with PNPPABRJ = '2003'
with PNPPERNR-LOW = '100750'
with PNPPERNR-LOW = '109202'
with PNPPERNR-LOW = '100255'
with PNPABKRS-LOW = 'US'
with SCHEMA = 'ZUSP'
with RADI_EDT ='X'
with EDT_VARI = 'CUS&SAP_US'
with TST_ON = 'X'
EXPORTING LIST TO MEMORY and RETURN.
CALL FUNCTION 'LIST_FROM_MEMORY'
  TABLES
    listobject       = ABAPLIST
EXCEPTIONS
   NOT_FOUND        = 1
   OTHERS           = 2.
CALL FUNCTION 'LIST_TO_ASCI'
  EXPORTING
    list_index         = -1
  TABLES
    listasci           = asci_tab
    listobject         = ABAPLIST
  EXCEPTIONS
    empty_list         = 1
    list_index_invalid = 2
    OTHERS             = 3.
IF sy-subrc NE '0'.
  WRITE:/ 'LIST_TO_ASCI error !! ', sy-subrc.
ENDIF.