BAPI 一些笔记
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- vendor 供应商号：长度必须和系统一致，10位。如 2000025要写成 0002000025传递给参数。
CALL FUNCTION ‘CONVERSION_EXIT_ALPHA_INPUT’
EXPORTING input = poheader-vendor IMPORTING output = poheader-vendor.
poheaderx-vendor = abap_true.
- POITEM 中的 PO_ITEM 参数，在 POITEMX中对应的不是X，而是相同的 采购凭证的项目编号.
poitem-po_item = lv_ebelp.”行项目 poitemx-po_item = lv_ebelp.
- POHEADER中的参数在 POHEADERX一定要有对应的参数。POITEM也一样。
- 增强字段在extensionin里
“抬头增强字段 ls_te_head-zpslx = ls_head-zpslx. ls_te_head-zzekkoyl0 = ls_head-zwxsh.”无需送货标识 ls_te_headx-zpslx = abap_true. ls_te_headx-zzekkoyl0 = abap_true. lt_extensionin-structure = ‘BAPI_TE_MEPOHEADER’. lt_extensionin-valuepart1 = ls_te_head. APPEND lt_extensionin. CLEAR:ls_te_head,lt_extensionin. lt_extensionin-structure = ‘BAPI_TE_MEPOHEADERX’. lt_extensionin-valuepart1 = ls_te_headx. APPEND lt_extensionin. CLEAR:ls_te_headx,lt_extensionin.
“行项目增强字段 ls_te_item-po_item = lv_ebelp. ls_te_item-zzeanme = lt_data-zzeanme . ls_te_item-zzcd = lt_data-zzcd. ls_te_item-zzjsean = lt_data-ean11. ls_te_item-zzjssl = lt_data-zzeanme. ls_te_item-zzjsdw = lt_data-meins. ls_te_item-zzdgean = lt_data-zzdgean. ls_te_item-zzeanme = lt_data-zzdgsl. ls_te_item-zzdgdw = lt_data-zzdgdw. ls_te_item-zmd = lt_data-zmd. ls_te_item-zzekpoyl6 = lt_data-zzekpoyl6.”城市代码 CLEAR:lt_data,poaccount,poaccountx.
lt_extensionin-structure = ‘BAPI_TE_MEPOITEM’. CALL METHOD cl_abap_container_utilities=>fill_container_c EXPORTING im_value = ls_te_item IMPORTING ex_container = lt_extensionin-valuepart1 EXCEPTIONS illegal_parameter_type = 1 OTHERS = 2. IF sy-subrc <> 0. * Implement suitable error handling here ENDIF. APPEND lt_extensionin. CLEAR lt_extensionin.
ls_te_itemx-po_item = lv_ebelp. ls_te_itemx-zzeanme = abap_true. ls_te_itemx-zzcd = abap_true. ls_te_itemx-zzjsean = abap_true. ls_te_itemx-zzjssl = abap_true. ls_te_itemx-zzjsdw = abap_true. ls_te_itemx-zzdgean = abap_true. ls_te_itemx-zzeanme = abap_true. ls_te_itemx-zzdgdw = abap_true. ls_te_itemx-zmd = abap_true. ls_te_itemx-zzekpoyl6 = abap_true. lt_extensionin-structure = ‘BAPI_TE_MEPOITEMX’. lt_extensionin-valuepart1 = ls_te_itemx. APPEND lt_extensionin. CLEAR lt_extensionin.
BAPI的结构，BAPI里的代码可以分为这样两部分：
1、一部分是数据校核，检查传入的数据是否满足创建相关业务对象的条件，并且把错误消息反馈出来；
2、另一部分是更新数据库，即UPDATE/INSERT/DELETE dbtab这样的操作。
1 BAPI的优点
bapi是面向对象的设计;
bapi是固定的,一般不能修改;
bapi可以被sap内部部件和非sap程序使用;
bapi的成功和错误信息始终通过RETURN返回;
bapi可以被许多开发平台使用;
2 何时该考虑使用BAPI设计程序
用VB/JAVA?C++等语言编写非SAPGUI程序访问和处理sap数据;
SAP不同部件之间通讯;
与非sap程序或者老系统交换数据:
使用异步通信分发数据如:ALE
可以通过SAP Business Connector or Internet Application Components 与因特网程序集成;
3 关于RETURN
RETURN用于BAPI返回错误和成功的消息,它可以是BAPIRETURN,BAPIRETURN,BAPIRET1,BAPIRET2和BAPIRET2_FIX中的一种类型.这些结构一般都包括以下字段:
SORT return BY type number row.
LOOP AT return WHERE type = ‘E’ OR type = ‘A’.
ENDLOOP.
如果sy-subrc = 0，CALL FUNCTION ‘BAPI_TRANSACTION_ROLLBACK’.
否则
CALL FUNCTION ‘BAPI_TRANSACTION_COMMIT’
EXPORTING
wait = ‘X’ “参数wait赋值‘X’,提交完之后才回进行后面的代码
IMPORTING
return = ls_commit_return.
TYPE | CHAR 1 | S= success message E = error message W = warning message I = information message A = termination message (abort)终止消息(中止) |
|---|---|---|
ID | CHAR 20 | Message ID The structure BAPIRET2 takes into account the name space extension for the message class as of Release 4.0. If you want messages to be compatible with earlier R/3 Releases, use the message classes before Release 4.0. |
NUMBER | NUMC 3 | Message number |
MESSAGE | CHAR 220 | Full message text from the message table. All variables (in fields Message_V1 to Message_V4) have been replaced with text. |
MESSAGE_V1 MESSAGE_V2 MESSAGE_V3 MESSAGE_V4 | CHAR 50 | Fields for the variable texts of the message |
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