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https://blog.csdn.net/livnobody_tian/article/details/78692609

現在SAP全面擁抱web和云，了解一下http的實(shí)現還是有必要的。ABAP中主要通過(guò)接口if_http_client來(lái)實(shí)現http的send, receive功能

REPORT  zhttp_client NO STANDARD PAGE HEADING.

DATA: lo_http_client TYPE REF TO if_http_client,
      lv_uri         TYPE string,
      lv_results     TYPE string.
DATA: itab TYPE TABLE OF string.
DATA: p_code TYPE i,
      p_reason TYPE string.
*   Create an instance of the HTTP client:
CALL METHOD cl_http_client=>create_by_url
  EXPORTING
    url                = 'http://yourwebsite/index.html'
  IMPORTING
    client             = lo_http_client
  EXCEPTIONS
    argument_not_found = 1
    plugin_not_active  = 2
    internal_error     = 3
    OTHERS             = 4.

*   Select the HTTP GET method:
lo_http_client->request->set_method(
  if_http_request=>co_request_method_get ).

*   Submit the request:
CALL METHOD lo_http_client->send
  EXCEPTIONS
    http_communication_failure = 1
    http_invalid_state         = 2
    http_processing_failed     = 3
    http_invalid_timeout       = 4
    OTHERS                     = 5.

** 得到response,這一步是必須的
CALL METHOD lo_http_client->receive
  EXCEPTIONS
    http_communication_failure = 1
    http_invalid_state         = 2
    http_processing_failed     = 3.

IF sy-subrc EQ 0.
  lv_results =
    lo_http_client->response->get_cdata( ).


  CALL METHOD lo_http_client->response->get_status
    IMPORTING
      code   = p_code
      reason = p_reason.
ELSE.
*      RAISE EXCEPTION TYPE lcx_icf_exception.
ENDIF.

SPLIT lv_results AT cl_abap_char_utilities=>cr_lf INTO TABLE itab.  "把html內容放到內表

WRITE: / 'Status:',p_code, p_reason.
ULINE.
LOOP AT itab INTO lv_results.
  WRITE: / lv_results.
ENDLOOP.

*   Always remember to close the connection:
lo_http_client->close( ).