Wednesday, April 13, 2011

Calling a web service in ABAP that validates an email id

In this tutorial, we would use a free web service in an ABAP program which validates an email-id. For more details regarding this web service, click here.

Create a program and use the following code:

REPORT zvalidate_email.
PARAMETERS: p_mail(100) LOWER CASE.                 " E-Mail id to be verified
DATA: http_client TYPE REF TO if_http_client .
DATA: w_string TYPE string ,
w_result TYPE string ,
r_str TYPE string .
DATA: result_tab TYPE TABLE OF string.
START-OF-SELECTION .
CLEAR w_string .
CONCATENATE
'http://www.webservicex.net/ValidateEmail.asmx/IsValidEmail?Email=' p_mail
INTO
w_string .
  CALL METHOD cl_http_client=>create_by_url
EXPORTING
url = w_string
IMPORTING
client = http_client
EXCEPTIONS
argument_not_found = 1
plugin_not_active = 2
internal_error = 3
OTHERS = 4.
  CALL METHOD http_client->send
EXCEPTIONS
http_communication_failure = 1
http_invalid_state = 2.
  CALL METHOD http_client->receive
EXCEPTIONS
http_communication_failure = 1
http_invalid_state = 2
http_processing_failed = 3.
CLEAR w_result .
w_result = http_client->response->get_cdata( ).
  REFRESH result_tab .
SPLIT w_result AT cl_abap_char_utilities=>cr_lf INTO TABLE result_tab .
  READ TABLE result_tab INTO r_str INDEX 2.
IF r_str+44(1) = 't'.
WRITE:/ 'Valid email address'.
ELSE.
WRITE:/ 'Invalid email address'.
ENDIF.

Output:

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