为了完善API接口，增强友好性，做了一点小文档展示。
新建配置表：(用来做接口参数配置展示使用，不在程序中应用)
因为需要给每个接口一个对应的名字，所以在原来的API控制表中增加一个文本字段。
这里加了俩个测试用的接口名对应参数表数据如下：
下面就要在API的默认GET方法中展示出来。
METHOD if_http_extension~handle_request. TYPES:BEGIN OF ty_retu, success TYPE string, access_token TYPE string, message TYPE string, END OF ty_retu. DATA: lt_fields TYPE tihttpnvp, lv_data TYPE string, lv_retu TYPE string, gw_retu TYPE ty_retu, lv_ifid TYPE string, lv_method TYPE string, gv_json TYPE string, gt_api TYPE TABLE OF zapi_param, gw_api LIKE LINE OF gt_api, gw_con TYPE zapi_control, gv_flag TYPE flag, gv_new_meth TYPE c, gv_type TYPE c LENGTH 10, gv_new_io TYPE c. FIELD-SYMBOLS: <fs_field> LIKE LINE OF lt_fields. "限定不做GET方法，GET根方法作为API文档说明 lv_ifid = server->request->get_form_field( name = 'IFID' )."GET INTERFACE ID lv_method = server->request->get_header_field( name = '~request_method' )."GET INTERFACE METHOD "CHECK CONTROL TABLE IF lv_ifid IS INITIAL AND lv_method = 'GET'. SELECT * INTO TABLE gt_api FROM zapi_param. lv_retu = lv_retu && '<html><body>'. lv_retu = lv_retu && '<H1><center>Hisense API Document</center></H1>'. "说明 lv_retu = lv_retu && '<I>Hisense API document is online from 2020.This is for public purpose to get connection to our system</I>'. lv_retu = lv_retu && '<br>'. lv_retu = lv_retu && '<br>'. lv_retu = lv_retu && '<br>'. LOOP AT gt_api INTO gw_api. AT NEW zmethod. gv_new_meth = 'X'. ENDAT. AT NEW zinout. gv_new_io = 'X'. ENDAT. IF gv_new_meth = 'X'. "二级标题 接口名 SELECT SINGLE * INTO gw_con FROM zapi_control WHERE zif_id = gw_api-zif_id AND zmethod = gw_api-zmethod. lv_retu = lv_retu && '<H2>---------------' && gw_con-zme_name && '-----------------</H2>'. * lv_retu = lv_retu && 'order create API'. "三级标题 接口说明 lv_retu = lv_retu && '<H3>HTTP Request</H3>'. "文本 接口URL lv_retu = lv_retu && 'POST www.gjyxcrmdev.crm.hisense.com:8000/sap/zapi?ITID=' && gw_api-zif_id. lv_retu = lv_retu && '<br>'. lv_retu = lv_retu && '<br>'. lv_retu = lv_retu && '<br>'. CLEAR gv_new_meth. ENDIF. IF gv_new_io = 'X'. IF gw_api-zinout = 'I'. lv_retu = lv_retu && '<H3>Request Body Parameters</H3>'. lv_retu = lv_retu && '<br>'. ELSEIF gw_api-zinout = 'O'. lv_retu = lv_retu && '<H3>Response Body Parameters</H3>'. lv_retu = lv_retu && '<br>'. ENDIF. "字段属性说明 lv_retu = lv_retu && '<table border="1">'. lv_retu = lv_retu && '<td>' && 'Parameter' && '</td>'. lv_retu = lv_retu && '<td>' && 'Type' && '</td>'. lv_retu = lv_retu && '<td>' && 'Status' && '</td>'. lv_retu = lv_retu && '<td>' && 'Description' && '</td>'. gv_new_io = ''. ENDIF. "字段 lv_retu = lv_retu && '<tr>'. lv_retu = lv_retu && '<td>' && gw_api-zparameter && '</td>'. CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT' EXPORTING input = gw_api-type IMPORTING output = gv_type. lv_retu = lv_retu && '<td>' && gv_type && '</td>'. lv_retu = lv_retu && '<td>' && gw_api-status && '</td>'. lv_retu = lv_retu && '<td>' && gw_api-description && '</td>'. lv_retu = lv_retu && '</tr>'. AT END OF zinout. lv_retu = lv_retu && '</table>'. lv_retu = lv_retu && '<br>'. ENDAT. ENDLOOP. * CONCATENATE 'T1:{' * cl_abap_char_utilities=>newline * 'HEAD:{' * cl_abap_char_utilities=>newline * `"PROCESS_TYPE":"ZSV1"` * cl_abap_char_utilities=>newline * `"POSTING_DATE":"20201124"` * cl_abap_char_utilities=>newline * `"ITEM":{` * cl_abap_char_utilities=>newline * `"NO":"10"` * cl_abap_char_utilities=>newline * `"PRODUCT":"TEST12333"` * cl_abap_char_utilities=>newline * `}` * cl_abap_char_utilities=>newline * '}' * cl_abap_char_utilities=>newline * '}' * INTO gv_json. * lv_retu = lv_retu && '<I>' && gv_json && '</I>'. "结束 lv_retu = lv_retu && '</body></html>'. "SET RETURN DATA server->response->if_http_entity~set_content_type( content_type = 'Text/HTML' ). server->response->set_cdata( EXPORTING data = lv_retu " Character data ). ELSE. SELECT SINGLE * INTO gw_con FROM zapi_control WHERE zif_id = lv_ifid AND zmethod = lv_method. IF sy-subrc <> 0. gw_retu-success = 'E'. gw_retu-message = 'Called Error,Please check the url or method!'. lv_retu = /ui2/cl_json=>serialize( data = gw_retu pretty_name = 'L' compress = abap_true ). ELSE. CASE gw_con-zflag."used flag WHEN 'X'. *""GET HTTP MESSAGE BODY lv_data = server->request->if_http_entity~get_cdata( ). "call method CALL FUNCTION gw_con-zpro_fm EXPORTING input = lv_data IMPORTING output = lv_retu. WHEN ''. gw_retu-success = 'E'. gw_retu-message = 'Interface Not Used!'. lv_retu = /ui2/cl_json=>serialize( data = gw_retu pretty_name = 'L' compress = abap_true ). WHEN OTHERS. ENDCASE. ENDIF. "SET RETURN DATA server->response->if_http_entity~set_content_type( content_type = 'application/json' ). server->response->set_cdata( EXPORTING data = lv_retu " Character data ). ENDIF. ENDMETHOD.
SICF测试服务，效果如下：
