SAP 调取http的x-www-form-urlencoded形式的接口

一、了解下x-www-form-urlencoded形式对于SAP来说有啥区别
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简单来说，
1.raw格式就是标准的json格式：{“Name”:“John Smith”，“Age”: 23}
2.x-www格式是要转化一下的：Name=John+Smith&Age=23
字段与字段相互连接要用 & 符号，空格用 + 连接。所以说当你的关键参数里面带有这些特殊符号时，就要用方法转化一下。

二、具体实例。
先使用Postman跑一下，ok没有问题，可以通畅。关键信息按照你的接口来，我的接口信息上马了。
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然后写ABAP代码：

DATA: len         TYPE        i, "发送报文长度len_string  TYPE        string,url         TYPE        string, "接口地址http_client TYPE REF TO if_http_client, "http客户端post_string TYPE        string,result      TYPE        string.
DATA: it_header  TYPE tihttpnvp,gv_json_in TYPE string VALUE '' .START-OF-SELECTION." url = 'https://api.map.baidu.com/weather/v1/?district_id=222405&data_type=all&ak=cvqVbWx3ruVm63LqMbuW43K3oqNOodBT'.url = 'http://这是个具体的网址，你需要粘贴上你的网址token'.cl_http_client=>create_by_url(EXPORTING url = url    "服务提供方服务地址IMPORTING client  =  DATA(lo_client))."调取方式：get 或者为 postlo_client->request->set_method( if_http_request=>co_request_method_post )." lo_client->request->set_method( if_http_request=>co_request_method_get )."设置抬头字段CALL METHOD lo_client->request->set_header_fieldEXPORTINGname  = 'Content-Type'value = 'application/x-www-form-urlencoded'.  "为这种形式的，需要设置抬头格式"返回格式。为json的lo_client->response->if_http_entity~set_content_type( content_type = 'application/json' ).*lo_client->response->get_header_field( name = 'x-csrf-token' ).
*lo_client->response->get_cookies( CHANGING cookies = lt_cookies ).DATA:lv_username TYPE string.DATA:lv_password TYPE string."为这种x-www-form-urlencoded形式的，需要把变量全部转译一下，比如&符号的lv_username = cl_http_utility=>escape_url( 'cha填写关键信息' ).lv_password = cl_http_utility=>escape_url( 'O0&J人工打码' ).gv_json_in =   'grant_type=password' &&   "固定值'&username=' && lv_username &&'&password=' && lv_password &&'&client_id=crm' .  "固定值DATA(lv_len) = strlen( gv_json_in ).
**  设置post接口body参数lo_client->request->set_cdata( data = gv_json_in  length = lv_len ).**  发送数据lo_client->send("    EXPORTING"       timeout                    = co_timeout_default " Timeout of Answer Waiting TimeEXCEPTIONShttp_communication_failure = 1                  " Communication Errorhttp_invalid_state         = 2                  " Invalid statehttp_processing_failed     = 3                  " Error When Processing Methodhttp_invalid_timeout       = 4                  " Invalid Time EntryOTHERS                     = 5).IF sy-subrc <> 0.result = '接口接受响应失败'.ENDIF.**********************************************************************
**  接收返回参数lo_client->receive(EXCEPTIONShttp_communication_failure = 1                " Communication Errorhttp_invalid_state         = 2                " Invalid statehttp_processing_failed     = 3                " Error When Processing MethodOTHERS                     = 4).IF sy-subrc <> 0.result = '接口接受响应失败'.ENDIF.result = lo_client->response->get_cdata( ).lo_client->close( )."  WRITE: url.WRITE: / result.