WDA基础十一：Excel上载

1.因为是做建单的例子，所以没有做结果显示，在加了两个属性

DATESOURCE  Type XSTRING

FILENAME         Type STRING

2.在VIEW中新建element

FileUpload

给个按钮事件：UPLOAD

method ONACTIONUPLOAD .

  DATA LO_EL_CONTEXT TYPE REF TO IF_WD_CONTEXT_ELEMENT.
  DATA LV_DATESOURCE TYPE WD_THIS->ELEMENT_CONTEXT-DATESOURCE.
  DATA FILE_DATA TYPE XSTRING.
  DATA FILE_NAME TYPE STRING.
  DATA:
    LV_NAME    TYPE STRING,
    LV_STRING  TYPE STRING,
    LV_MSG     TYPE STRING,
    LV_FLAG    TYPE BOOLEAN,
    LV_MESSAGE TYPE STRING.
  DATA:
    LREF_EXCEL      TYPE REF TO CL_FDT_XL_SPREADSHEET,
    LREF_EXCEL_CORE TYPE REF TO CX_FDT_EXCEL_CORE,
    LREF_DATA       TYPE REF TO DATA,
    LREF_DREF       TYPE REF TO DATA.
* Field symbols declarations
  FIELD-SYMBOLS:
    <F1> TYPE TABLE.
  DATA:
    LT_WORKSHEETS     TYPE STANDARD TABLE OF STRING.
* Structures declarations

*   get element via lead selection
  LO_EL_CONTEXT = WD_CONTEXT->GET_ELEMENT( ).

*   get single attribute
  LO_EL_CONTEXT->GET_ATTRIBUTE(
    EXPORTING
      NAME =  `DATESOURCE`
    IMPORTING
      VALUE = FILE_DATA ).

* get single attribute
  LO_EL_CONTEXT->GET_ATTRIBUTE(
    EXPORTING
      NAME =  `FILENAME`
    IMPORTING
      VALUE = FILE_NAME ).

  TRY.
*     Create object of class to read .xlsx file contents
      CREATE OBJECT LREF_EXCEL
        EXPORTING
          DOCUMENT_NAME = FILE_NAME
          XDOCUMENT     = FILE_DATA.

    CATCH CX_FDT_EXCEL_CORE INTO LREF_EXCEL_CORE.
*      CLEAR LV_MSG.

*     Call method to get error message text
*      CALL METHOD LREF_EXCEL_CORE->IF_MESSAGE~GET_TEXT
*        RECEIVING
*          RESULT = LV_MSG.
*<< Display error message returned in lv_msg >>
      RETURN.
  ENDTRY.

* Call method to get list of worksheets in the .xlsx file
  LREF_EXCEL->IF_FDT_DOC_SPREADSHEET~GET_WORKSHEET_NAMES(
      IMPORTING
        WORKSHEET_NAMES = LT_WORKSHEETS ).
* Condition to check whether .xlsx file has any active worksheets
  IF LT_WORKSHEETS IS NOT INITIAL.
*   Read active worksheet
    READ TABLE LT_WORKSHEETS INDEX  INTO LV_NAME.
  ELSE.
*<< Display error message >>
    RETURN.
  ENDIF.

* Get reference of .xlsx file contents in the active worksheet
  LREF_DATA = LREF_EXCEL->IF_FDT_DOC_SPREADSHEET~GET_ITAB_FROM_WORKSHEET( LV_NAME ).
* Fetch all records in the active worksheet
  ASSIGN LREF_DATA->* TO <F1>.
* Prepare exporting table with .xlsx file contents
  IF <F1> IS NOT ASSIGNED.
*<< Display error message >>
    RETURN.
  ENDIF.

endmethod.