利用REUSE_ALV_HIERSEQ_LIST_DISPLAY进行多层输出（输出表结构的又一例）

本文链接：https://blog.youkuaiyun.com/sap_jack/article/details/1441016

这篇博客演示了如何利用ABAP中的REUSE_ALV_HIERSEQ_LIST_DISPLAY函数来实现多层表结构的输出。通过定义全局结构，选择表字段并设置输出格式，最后调用函数进行显示。博客内容详细地展示了从选择屏幕到数据选择，再到字段布局的初始化和数据展示的完整过程。

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1、在程序里包含SLIS
type-pools: slis.

2、声明主表和明细表

* Global structure of list
types: begin of t_table,
                     tabname like dd03l-tabname,
                     ddtext   like dd02t-ddtext,
                     as4user like dd02l-as4user,
        end of t_table.

types: begin of ud_struct,
                     position   like dd03l-position,
                     tabname    like dd03l-tabname,
                     fieldname like dd03l-fieldname,
                     ddtext     like dd03t-ddtext,

                     keyflag    like dd03l-keyflag,
                     rollname   like dd03l-rollname,
                     domname    like dd03l-domname,
                     datatype   like dd03l-datatype,
                     ddleng     like dd03l-leng,
                     checktable like dd03l-checktable,
                     decimals   like dd03l-decimals,
                     eddtext    like dd03t-ddtext,
                     dddtext    like dd03t-ddtext,
       end of ud_struct.
data:   gt_outtabt type t_table occurs 0 with header line.
data:   gt_outtabf type ud_struct occurs 0 with header line.

3、申明主表和明细表的名称变量
g_tabname_header type slis_tabname,
g_tabname_item type slis_tabname.

4、声明主表和明细表连接关键字变量
data: gs_keyinfo type slis_keyinfo_alv

5 、设置输出格式

6、具体完整样例
*&---------------------------------------------------------------------
*& Report ZGETTABLEFIELD                                              *
*&                                                                     *
*&---------------------------------------------------------------------*
*&                                                                     *
*&                                                                     *
*&---------------------------------------------------------------------*

report zgettablefield .
* Data declaration
type-pools: slis.

tables: dd03l,dd02l.

data:   gt_fieldcat type slis_t_fieldcat_alv.
data:   gt_outtabt type t_table occurs 0 with header line.
data:   gt_outtabf type ud_struct occurs 0 with header line.
data:   gs_keyinfo type slis_keyinfo_alv,
        g_tabname_header type slis_tabname,
        g_tabname_item   type slis_tabname.

data:   g_repid like sy-repid.
data : begin of exclude occurs 5,
         fcode like sy-ucomm,
       end   of exclude.
data p_ucomm like sy-ucomm.

select-options s_tname for dd02l-tabname default 'VBAK'.

*===============================================================