SAP 提供http post服务 实践

 1   METHOD if_http_extension~handle_request.
 2     DATA: BEGIN OF ls_data,
 3             matnr TYPE matnr,
 4             maktx TYPE maktx,
 5           END OF ls_data.
 6 
 7     DATA: lt_data LIKE TABLE OF ls_data.
 8 
 9     DATA: lt_fields TYPE tihttpnvp.
10     FIELD-SYMBOLS: <fs_field> LIKE LINE OF lt_fields.
11 
12     DATA: lv_method TYPE string. "获取GET/POST方式
13     DATA: lv_json  TYPE string,  "返回参数
14           lv_json1 TYPE string,  "获取传回值数据
15           lv_json2 TYPE string.  "获取传回值数据
16 
17 
18 *    获取JSON抬头数据
19     server->request->get_header_fields(
20         CHANGING
21           fields = lt_fields
22       ).
23     lv_method = server->request->get_header_field( name = ‘~request_method‘ )."获取GET/POST方式
24     CALL METHOD server->response->if_http_entity~set_content_type
25       EXPORTING
26         content_type = ‘application/json‘.
27 
28     CASE lv_method.
29       WHEN ‘GET‘.
30 *        获取数据
31         SELECT matnr maktx INTO CORRESPONDING FIELDS OF TABLE lt_data
32           FROM z_v_atps23
33           UP TO 5 ROWS.
34 
35 *        内表转换JSON
36         CALL METHOD /ui2/cl_json=>serialize
37           EXPORTING
38             data   = lt_data
39           RECEIVING
40             r_json = lv_json.
41 
42 *        将行数据JSON返回给调用端
43         server->response->set_cdata(
44           EXPORTING
45             data   = lv_json
46         ).
47 
48         server->response->set_status( code = 200 reason = ‘OK‘ ).
49       WHEN ‘POST‘.
50 
51 *        获取JSON行数据
52         lv_json1 = server->request->if_http_entity~get_cdata( ).
53 *        解析json至内表方法1
54         /ui2/cl_json=>deserialize( EXPORTING json = lv_json1
55                                     CHANGING data = ls_data ).
56         IF NOT lv_json1 IS INITIAL.
57 *          获取数据
58           SELECT matnr maktx INTO CORRESPONDING FIELDS OF TABLE lt_data
59             FROM z_v_atps23
60             UP TO 10 ROWS
61             WHERE matnr = ls_data-matnr.
62 *         内表转换json
63           CALL METHOD /ui2/cl_json=>serialize
64             EXPORTING
65               data   = lt_data
66             RECEIVING
67               r_json = lv_json.
68 *        将行数据JSON返回给调用端
69           server->response->set_cdata(
70             EXPORTING
71               data   = lv_json
72           ).
73         ENDIF.
74 
75         LOOP AT lt_fields INTO DATA(ls_fields).
76           CASE ls_fields-name.
77             WHEN ‘lt_data‘.
78               lv_json2 = ls_fields-value.
79           ENDCASE.
80         ENDLOOP.
81 *        解析json至内表方法1
82         /ui2/cl_json=>deserialize( EXPORTING json = lv_json2
83                                     CHANGING data = lt_data ).
84 
85         IF NOT lv_json2 IS INITIAL.
86 *        将行数据JSON返回给调用端
87           server->response->set_cdata(
88             EXPORTING
89               data   = ‘SoapUi传参已收到‘
90           ).
91         ENDIF.
92         server->response->set_status( code = 200 reason = ‘OK‘ ).
93 
94     ENDCASE.
95 
96   ENDMETHOD.