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ABAP小白开发操作手册+（九）ABAP调用http

news 来源：原创 2024/9/18 21:57:21

开发类型：

新增ABAP通过调用http的方式来发送业务数据到其他系统

开发申请：

（这里业务的开发申请没写完整SAP对应外部系统字段的对应关系，没关系，我们可以看接口文档）

外围系统提供的接口文档：

（这一part的参数有点长，大家看看得了，不用太在意，把这个外围系统提供的参数列出来，只是为了体现参数的一些结构，方便大家对比后面我们在开发过程中，如何进行SAP参数的设置）

接口地址:

测试机: http://123456/rdmCalled/forSap/poInfo

正式机: http://123456/rdmCalled/forSap/poInfo

请求方式:

POST

入参类型:

["aplication/json"]

响应类型:

["application/json"]

请求参数：

入参示例:

{

        "detailInfoList": [

                 {

                         "count": 2,

                         "materialNo": "m001",

                        "materialName": "物料001",

                         "rowNo": "1",

                         "status": 1,

                         "taxRate": 0,

                         "totalPrice": 10,

                         "unitPrice": 5

                 }

        ],

        "orderDate": "2024-04-28 00:00:00",

        "poNo": "po001",

        "prNo": "pr001",

        "projectCode": "HKC20230524001"

}

响应状态：

状态码	说明
200	成功
500	异常
503	服务不正常
403	无权限
401	未登录

响应参数：

参数名称	参数说明	类型	schema
code	响应状态码 (成功200, 失败500)	integer(int32)	integer(int32)
data	需要返回的数据(该接口可忽略)	string
detailMsg	详细的消息内容，一般用于显示错误的原因	string	detailMsg
message	返回信息	string
show	在浏览器端的默认信息中是否显示(该接口可忽略)	boolean
success	是否成功	boolean

响应示例:

成功:

{

"success": true,

"message": "添加PO单信息成功; PO单号【po001】",

"detailMsg": "",

"show": true,

"code": 200,

"data": null

}

失败:

{

"success": false,

"message": "入参校验失败!",

"detailMsg": "项目编号不能为空; ",

"show": true,

"code": 500,

"data": null

}

开发步骤：

有点多，我先把代码粘贴上来

因为本质上还是接口，所以我们还是用事务代码SE37进行开发，进行导入导出参数的设置、源代码编写，今天太晚了，明天重新编辑一下

FUNCTION ZZMM_PO_TO_RDM_TEST.
*"----------------------------------------------------------------------
*"*"本地接口：
*"  IMPORTING
*"     VALUE(I_FRDAT) TYPE  FRGDT
*"     VALUE(I_EBELN) TYPE  EBELN
*"     VALUE(I_BANFN) TYPE  BANFN
*"     VALUE(I_ZZRDMNO) TYPE  ZERDMNO
*"  EXPORTING
*"     VALUE(E_RTYPE) TYPE  BAPI_MTYPE
*"     VALUE(E_RTYMSG) TYPE  BAPI_MSG
*"  TABLES
*"      T_DATA STRUCTURE  ZSMM0093
*"----------------------------------------------------------------------MACRO_SAVE_LOG_BEFORE_PROC.MACRO_SAVE_LOG_AFTER_PROC 'IN'.DATA LO_DATA TYPE REF TO DATA.DATA LV_ECS_JSON_REQ TYPE STRING.DATA: LV_ECS_JSON_RES TYPE STRING,LV_URL          TYPE STRING,
*        LV_URL          TYPE CHAR200,LV_MSG          TYPE STRING,LV_TYPE         TYPE BAPI_MTYPE.DATA GS_ECS_REQ TYPE zsMM0097.DATA GS_ECS_RET TYPE zsMM0098.DATA GT_ECS_INV_MAPPING TYPE /UI2/CL_JSON=>NAME_MAPPINGS.DATA GT_ECS_MAPPING_RET TYPE /UI2/CL_JSON=>NAME_MAPPINGS.GS_ECS_REQ-ORDERDATE = I_FRDAT.GS_ECS_REQ-PRNO = I_BANFN.GS_ECS_REQ-pOno = i_EBELN.GS_ECS_REQ-PROJECTCODE = I_ZZRDMNO.APPEND LINES OF t_DATA[] TO GS_ECS_REQ-DETAILS.LO_DATA = REF #( GS_ECS_REQ ).IF LO_DATA IS NOT BOUND.MACRO_SAVE_LOG_AFTER_PROC 'OUT'.RETURN.ENDIF."获取接口地址：配置成后台表SELECT SINGLE * FROM ZTMMURLWHERE Zname = 'PO_URL_RDM'INTO @DATA(LS_ZTMMURL).IF LS_ZTMMURL-ZVAL IS INITIAL.E_RTYPE = 'E'.E_RTYMSG = '接口地址未配置，请到ZTMMURL表中配置接口地址'.MACRO_SAVE_LOG_AFTER_PROC 'OUT'.RETURN.ENDIF.LV_URL = CONV CHAR200( LS_ZTMMURL-ZVAL ).CONDENSE LV_URL NO-GAPS.
*设置JSON字符转换GT_ECS_INV_MAPPING = VALUE #(( ABAP = 'DETAILS' JSON = 'detailInfoList'  )
( ABAP = 'BNFPO'  JSON = 'prRowNo' )
( ABAP = 'EBELP'  JSON = 'rowNo' )
( ABAP = 'MATNR'  JSON = 'materialNo' )
( ABAP = 'TXZ01'  JSON = 'materialName' )
( ABAP = 'LOEKZ'  JSON = 'status' )
( ABAP = 'NETPR'  JSON = 'unitPrice' )
( ABAP = 'BRTWR'  JSON = 'totalPrice' )
( ABAP = 'MENGE'  JSON = 'count' )
( ABAP = 'ORDERDATE'  JSON = 'orderDate' )
( ABAP = 'PONO'  JSON = 'poNo' )
( ABAP = 'PRNO'  JSON = 'prNo')
( ABAP = 'PROJECTCODE'  JSON = 'projectCode' )).GT_ECS_MAPPING_RET = VALUE #(( ABAP = 'code'         JSON = 'code')( ABAP = 'data'         JSON = 'data')( ABAP = 'detailmsg'    JSON = 'detailMsg')( ABAP = 'message'      JSON = 'message')( ABAP = 'show'         JSON = 'show')( ABAP = 'success'      JSON = 'success')).
*将ABAP数据转换为JSON格式CALL METHOD /UI2/CL_JSON=>SERIALIZEEXPORTINGDATA          = LO_DATA
*     COMPRESS      = 'X'PRETTY_NAME   = /UI2/CL_JSON=>PRETTY_MODE-LOW_CASENAME_MAPPINGS = GT_ECS_INV_MAPPINGRECEIVINGR_JSON        = LV_ECS_JSON_REQ.*创建CLIENTDATA:lo_http_client TYPE REF TO if_http_client.DATA l_resp TYPE string.
DATA:tt_headfield TYPE TIHTTPNVP .CALL METHOD cl_http_client=>create_by_urlEXPORTINGurl                = lv_url"APIIMPORTINGclient             = lo_http_clientEXCEPTIONSargument_not_found = 1plugin_not_active  = 2internal_error     = 3OTHERS             = 4.IF sy-subrc <> 0.MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgnoWITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4 INTO E_RTYMSG.E_RTYMSG = '创建client错误，错误信息： ' && E_RTYMSG.E_RTYPE  = 'E'.RETURN.ENDIF.lo_http_client->request->set_method('POST').CALL METHOD lo_http_client->request->if_http_entity~set_header_fieldEXPORTINGname  = 'Content-Type'value = 'application/json'.IF tt_headfield[] IS NOT INITIAL.CALL METHOD lo_http_client->request->if_http_entity~set_header_fieldsEXPORTINGfields = tt_headfield[].ENDIF.IF LV_ECS_JSON_REQ IS NOT INITIAL.DATA(l_conten_len) =  strlen( LV_ECS_JSON_REQ ).CALL METHOD lo_http_client->request->if_http_entity~set_cdataEXPORTINGdata   = LV_ECS_JSON_REQoffset = 0length = l_conten_len.ENDIF.
*发送请求CALL METHOD lo_http_client->sendEXPORTINGtimeout                    = 300EXCEPTIONShttp_communication_failure = 1http_invalid_state         = 2http_processing_failed     = 3http_invalid_timeout       = 4OTHERS                     = 5.IF sy-subrc <> 0.MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgnoWITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4 INTO E_RTYMSG.E_RTYMSG = '发送请求错误，错误信息： ' && E_RTYMSG.E_RTYPE  = 'E'.CALL METHOD lo_http_client->close.RETURN.ENDIF.
*返回请求CALL METHOD lo_http_client->receiveEXCEPTIONShttp_communication_failure = 1http_invalid_state         = 2http_processing_failed     = 3OTHERS                     = 4.IF sy-subrc <> 0.MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgnoWITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4 INTO  E_RTYMSG.E_RTYMSG = '返回请求错误，错误信息： ' &&  E_RTYMSG.e_Rtype = 'E'.CALL METHOD lo_http_client->close.RETURN.ENDIF.
*转换后的JSON字符串赋值CALL METHOD lo_http_client->response->if_http_entity~get_cdataRECEIVINGdata = l_resp.LV_ECS_JSON_RES = l_resp.
*关闭请求CALL METHOD lo_http_client->close.
*读取远程服务器返回的处理结果LO_DATA = REF #( GS_ECS_RET ).CALL METHOD /UI2/CL_JSON=>DESERIALIZEEXPORTINGJSON          = LV_ECS_JSON_RESNAME_MAPPINGS = GT_ECS_MAPPING_RETCHANGINGDATA          = LO_DATA.SEARCH LV_ECS_JSON_RES FOR 'false'.GS_ECS_RET-SUCCESS = XSDBOOL( SY-SUBRC NE 0 ).IF GS_ECS_RET-SUCCESS EQ ABAP_TRUE.E_RTYPE = 'S'.ELSE.E_RTYPE = 'E'.ENDIF.E_RTYMSG = GS_ECS_RET-MESSAGE.MACRO_SAVE_LOG_AFTER_PROC 'OUT'.ENDFUNCTION.