Created by Jerry Wang on May 26, 2014

1. 創建一個新的class，實現interface IF_HTTP_EXTENSION:

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2. tcode SICF，在sap node下面創建一個新的ICF node. 將step1創建的class 指定成handler class:

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激活class:

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3. handler class的方法實現如下:

METHOD if_http_extension~handle_request.DATA: lt_fields TYPE tihttpnvp,ls_io TYPE skwf_io,lt_file_access_info TYPE sdokfilacis,lv_content TYPE xstring.server->request->if_http_entity~get_form_fields( CHANGING fields = lt_fields ).READ TABLE lt_fields ASSIGNING FIELD-SYMBOL(<id>) WITH KEY name = 'id'.CHECK sy-subrc = 0.ls_io-objtype = 'P'.ls_io-objid = <id>-value.ls_io-class = 'BDS_POC22'.CALL FUNCTION 'CRM_KW_DOC_GET_DOCUMENT'EXPORTINGio = ls_ioIMPORTINGfile_access_info = lt_file_access_infocontent_bin = lv_content.READ TABLE lt_file_access_info ASSIGNING FIELD-SYMBOL(<mime>) INDEX 1.CHECK sy-subrc = 0.server->response->set_header_field(name = 'Content-Type' "#EC NOTEXTvalue = CONV #( <mime>-mimetype )).server->response->set_data( data = lv_content ).ENDMETHOD.

4. 在瀏覽器里輸入如下url，如果attachment guid對應的attachment是word格式，則彈出如下dialog:

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如果是text file，則直接用瀏覽器打開:

總結

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