ABAP项目砖家之旅-alv项目实战
本文共 23943 字，大约阅读时间需要 79 分钟。
ABAP项目砖家之旅-alv项目实战
# 前言
上一节“ABAP项目砖家之旅-screen和表单项目实战”，已经对我们项目中常用的自定义表录入界面和展示界面做了开发，快速开发的基础上也存在显示不美观、难以导出等缺陷。这一节我们使用alv报表对上一节的界面进行重写，写成一个带维护界面的alv报表。还是那句话，搬砖也要有急速成型的办法，不然赶不上项目要求，搞熟alv吧
一、ALV相关介绍
ALV-SAP LIST VIEW列表界面报表。主要是通过几个ALV专用的函数来实现数据展现，附带排序、筛选、打印、导出等工具栏和功能。按照abap行业共识，主要分两类有：简易的,两层ALV,分等级连续的列表和树形结构的ALV。本人姑且把用到的归纳一下，没用到的，其实大家可以按照项目要求网上找找高手的博文了解下。英文水平高的直接进去SE37看函数参数、结构、帮助也可以。
二、ALV使用步骤
主要原理剖析：alv使用本质是函数调用，alv函数通用参数有表头字段fieldcat（有自定结构类的，参照表结构…），数据表，布局格式参数等，下面举例和上代码：
（一）普通alv和扩展alv
1.普通alv函数
SE37函数为：REUSE_ALV_GRID_DISPLAY /REUSE_ALV_LIST_DISPLAY ，常用GRID函数
1.1函数参数解释
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY' EXPORTING* I_INTERFACE_CHECK = ' ' "检查接口一致性* I_BYPASSING_BUFFER = ' ' "是否使用缓存* I_BUFFER_ACTIVE = ' ' "是否激活缓存 I_CALLBACK_PROGRAM = sy-repid "调用ALV的程序，不填写默认当前程序，也可以SY-REPID I_CALLBACK_PF_STATUS_SET = 'FRM_SET_STATUS' "alv工具栏的FRM,使用后，标准ALV的status会失效！* I_CALLBACK_USER_COMMAND = ' ' "alv用户按键和菜单FRM* I_CALLBACK_TOP_OF_PAGE = ' ' "抬头内容FRM* I_CALLBACK_HTML_TOP_OF_PAGE = ' ' "HTML页眉内容FRM* I_CALLBACK_HTML_END_OF_LIST = ' ' "HTML页脚frm* I_STRUCTURE_NAME = "se11定义的结构名称* I_BACKGROUND_ID = ' ' "alv背景图案的id* I_GRID_TITLE = "alv标题* I_GRID_SETTINGS = "alvgrid信息* IS_LAYOUT = "输出布局样式* IT_FIELDCAT = "列标题、长度等* IT_EXCLUDING = "要隐藏的alv标准工具栏* IT_SPECIAL_GROUPS = "分组文本内表* IT_SORT = "排序按钮的设置* IT_FILTER = "筛选设置* IS_SEL_HIDE = "替换/修改select-option的值* I_DEFAULT = 'X' "可以定义默认布局，space标识不可以修改默认* I_SAVE = ' ' "是否可以保存ALV布局：X-保存全局变式 U-保存用户变式 A-都保存 space-不能保存* IS_VARIANT = "表格布局变式* IT_EVENTS = "设置事件 类型为slis_t_event* IT_EVENT_EXIT = "事件执行后回调（增强出口）* IS_PRINT = "后台打印参数设置* IS_REPREP_ID = "* I_SCREEN_START_COLUMN = 0 "对话框形式显示的开始列* I_SCREEN_START_LINE = 0* I_SCREEN_END_COLUMN = 0* I_SCREEN_END_LINE = 0* I_HTML_HEIGHT_TOP = 0* I_HTML_HEIGHT_END = 0* IT_ALV_GRAPHICS = "是否可以在图表显示ALV* IT_HYPERLINK = "使用超链接* IT_ADD_FIELDCAT =* IT_EXCEPT_QINFO =* IR_SALV_FULLSCREEN_ADAPTER =* IMPORTING* E_EXIT_CAUSED_BY_CALLER =* ES_EXIT_CAUSED_BY_USER = TABLES T_OUTTAB = LT_ZTTEST "要显示的内表信息，结构必须和上面struct或者fieldcat一致 EXCEPTIONS PROGRAM_ERROR = 1 OTHERS = 2 .
1.2ALV状态栏STATUS
这里说一下ALV标准界面STATUS按钮和log，大家如用自己的状态栏，可以参考下面的按键添加
也可以通过SE90直接复制标准ALV的： 
1.3定义函数需要的输入参数
*DEFINE fieldcat 宏脚本 DEFINE build_fieldcat . ls_fieldcat-fieldname = &1 . "字段名 ls_fieldcat-tabname = &2 . "内表名 ls_fieldcat-seltext_m = &3 . "字段描述 ls_fieldcat-outputlen = &4 . "字段长度 ls_fieldcat-no_zero = &5. "为0是否显示为空 ls_fieldcat-just = &6 . "对齐 L R M ls_fieldcat-edit_mask = &7 . " ls_fieldcat-decimals_out = &8 ."小数位 APPEND ls_fiELdcat TO lt_fieldcat . CLEAR ls_fieldcat . END-OF-DEFINITION. "1.定义fieldcat build_fieldcat 'MANDT' 'LT_ZTTEST' '客户端' 3 'X' 'L' '' 0. build_fieldcat 'ZNAME' 'LT_ZTTEST' '客户端' 5 'X' 'L' '' 0. build_fieldcat 'ZDESC' 'LT_ZTTEST' '客户端' 10 'X' 'L' '' 0. build_fieldcat 'ZDATE' 'LT_ZTTEST' '客户端' 10 'X' 'L' '' 0. build_fieldcat 'ZPSW' 'LT_ZTTEST' '客户端' 3 'X' 'L' '' 0. build_fieldcat 'ZAREA' 'LT_ZTTEST' '客户端' 3 'X' 'L' '' 0. build_fieldcat 'ZWERKS' 'LT_ZTTEST' '客户端' 3 'X' 'L' '' 0. "2.定义layout参数 ls_layout-window_titlebar = '现金流量表'.* ls_layout-coltab_fieldname = 'S_COLOR'. "内表中存放4位颜色代码字段 ls_layout-info_fieldname = 'S_COLOR' .* ls_layout-colwidth_optimize = 'X'. 跟下面设置 fieldcat 宽度冲突，任选一 ls_layout-zebra = 'X'. ls_layout-numc_sum = 'X'. ls_layout-reprep = 'X'. ls_layout-expand_all = 'X'.* ls_layout-def_status = 'X'. ls_layout-totals_only = 'X'. "3.定义其他参数 l_buffer = abap_false. l_save = 'A'. ls_variant-REPORT = sy-repid. ls_variant-handle = '0001'. ls_variant-username = sy-uname .
1.4 select数据
1.5 调用ALV函数
FORM GET_DATA . REFRESH LT_ZTTEST. select * from zttest_01 into TABLE LT_ZTTEST where zname in s_zname and zdesc in s_zdesc .ENDFORM.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY' EXPORTING* I_INTERFACE_CHECK = ' ' "检查接口一致性* I_BYPASSING_BUFFER = ' ' "是否使用缓存* I_BUFFER_ACTIVE = ' ' "是否激活缓存 I_CALLBACK_PROGRAM = sy-repid "调用ALV的程序，不填写默认当前程序，也可以SY-REPID* I_CALLBACK_PF_STATUS_SET = 'FRM_SET_STATUS' "alv工具栏的FRM,使用后，标准ALV的status会失效！* I_CALLBACK_USER_COMMAND = ' ' "alv用户按键和菜单FRM* I_CALLBACK_TOP_OF_PAGE = ' ' "抬头内容FRM* I_CALLBACK_HTML_TOP_OF_PAGE = ' ' "HTML页眉内容FRM* I_CALLBACK_HTML_END_OF_LIST = ' ' "HTML页脚frm* I_STRUCTURE_NAME = "se11定义的结构名称* I_BACKGROUND_ID = ' ' "alv背景图案的id* I_GRID_TITLE = "alv标题* I_GRID_SETTINGS = "alvgrid信息 IS_LAYOUT = la_layout "输出布局样式 IT_FIELDCAT = lt_fieldcat[] "列标题、长度等* IT_EXCLUDING = "要隐藏的alv标准工具栏* IT_SPECIAL_GROUPS = "分组文本内表* IT_SORT = "排序按钮的设置* IT_FILTER = "筛选设置* IS_SEL_HIDE = "替换/修改select-option的值* I_DEFAULT = 'X' "可以定义默认布局，space标识不可以修改默认 I_SAVE = l_save "'A' "是否可以保存ALV布局：X-保存全局变式 U-保存用户变式 A-都保存 space-不能保存 IS_VARIANT = ls_variant "表格布局变式* IT_EVENTS = "设置事件 类型为slis_t_event* IT_EVENT_EXIT = "事件执行后回调（增强出口）* IS_PRINT = "后台打印参数设置* IS_REPREP_ID = "* I_SCREEN_START_COLUMN = 0 "对话框形式显示的开始列* I_SCREEN_START_LINE = 0* I_SCREEN_END_COLUMN = 0* I_SCREEN_END_LINE = 0* I_HTML_HEIGHT_TOP = 0* I_HTML_HEIGHT_END = 0* IT_ALV_GRAPHICS = "是否可以在图表显示ALV* IT_HYPERLINK = "使用超链接* IT_ADD_FIELDCAT =* IT_EXCEPT_QINFO =* IR_SALV_FULLSCREEN_ADAPTER =* IMPORTING* E_EXIT_CAUSED_BY_CALLER =* ES_EXIT_CAUSED_BY_USER = TABLES T_OUTTAB = LT_ZTTEST[] "要显示的内表信息，结构必须和上面struct或者fieldcat一致 EXCEPTIONS PROGRAM_ERROR = 1 OTHERS = 2 . IF SY-SUBRC <> 0. MESSAGE ID SY-msgid TYPE SY-MSGTY NUMBER SY-MSGNO WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 . ENDIF.
注意：一般table类的输入变量，最好使用[]，避免定义的内表有表头而跟函数原来的变量结构不一致导致st22报错
（二）树状和层次alv
树状和层次ALV可以通过函数引用实现，也可以通过类实现，类实现的alv我们都放到ooalv介绍吧。
1. 层次结构 REUSE_ALV_HIERSEQ_LIST_DISPLAY
DATA:BEGIN OF LT_HEADER OCCURS 0, MANDT TYPE MANDT, ZWERKS TYPE WERKS_D, END OF LT_HEADER , BEGIN OF LT_ITEM OCCURS 0, MANDT TYPE MANDT, ZWERKS TYPE WERKS_D, ZNAME TYPE zttest_01-ZNAME, ZDESC TYPE zttest_01-ZDESC, ZDATE TYPE zttest_01-ZDATE, ZAREA TYPE zttest_01-ZAREA, END OF LT_ITEM , GS_KEYINFO type slis_keyinfo_alv,"支持5个关联关系 LS_HEADER LIKE LINE OF LT_HEADER, LS_ITEM LIKE LINE OF LT_ITEM . "1.fieldcat 构建 build_fieldcat 'MANDT' 'LT_ITEM' '客户端' 3 'X' 'L' '' 0. "因为数据都是lt_item显示为主，故填写结构为LT_ITEM，表头是合并层次 build_fieldcat 'ZNAME' 'LT_ITEM' '名称' 5 'X' 'L' '' 0. build_fieldcat 'ZDESC' 'LT_ITEM' '描述' 10 'X' 'L' '' 0. build_fieldcat 'ZDATE' 'LT_ITEM' '截止日期' 10 'X' 'L' '' 0.* build_fieldcat 'ZPSW' 'LT_ITEM' '密码文本' 3 'X' 'L' '' 0. build_fieldcat 'ZAREA' 'LT_ITEM' '区域' 3 'X' 'L' '' 0. build_fieldcat 'ZWERKS' 'LT_ITEM' '门店' 3 'X' 'L' '' 0. "2.其他参数（类似普通alv这里不重复说明） "3.KEY关联值 CLEAR gs_keyinfo . gs_keyinfo-header01 = 'MANDT' . gs_keyinfo-item01 = 'MANDT'. gs_keyinfo-header02 = 'ZWERKS'. gs_keyinfo-item02 = 'ZWERKS'. "4.数据整理 LOOP AT LT_ZTTEST ASSIGNING. LS_HEADER-ZWERKS = -ZWERKS. LS_HEADER-MANDT = -MANDT. APPEND LS_HEADER TO LT_HEADER . LS_ITEM-MANDT = -MANDT . LS_ITEM-ZWERKS = -ZWERKS. LS_ITEM-ZNAME = -ZNAME. LS_ITEM-zdesc = -zdesc. ls_item-zdate = -zdate . ls_item-zarea = -ZAREA . APPEND LS_ITEM TO LT_ITEM . ENDLOOP. DELETE ADJACENT DUPLICATES FROM LT_HEADER . DELETE ADJACENT DUPLICATES FROM LT_ITEM . CALL FUNCTION 'REUSE_ALV_HIERSEQ_LIST_DISPLAY' EXPORTING* I_INTERFACE_CHECK = ' '* I_CALLBACK_PROGRAM =* I_CALLBACK_PF_STATUS_SET = ' '* I_CALLBACK_USER_COMMAND = ' '* IS_LAYOUT = IT_FIELDCAT = lt_fieldcat[]* IT_EXCLUDING =* IT_SPECIAL_GROUPS =* IT_SORT =* IT_FILTER =* IS_SEL_HIDE =* I_SCREEN_START_COLUMN = 0* I_SCREEN_START_LINE = 0* I_SCREEN_END_COLUMN = 0* I_SCREEN_END_LINE = 0* I_DEFAULT = 'X'* I_SAVE = ' '* IS_VARIANT =* IT_EVENTS =* IT_EVENT_EXIT = I_TABNAME_HEADER = 'LT_HEADER' I_TABNAME_ITEM = 'LT_ITEM'* I_STRUCTURE_NAME_HEADER =* I_STRUCTURE_NAME_ITEM = IS_KEYINFO = gs_keyinfo* IS_PRINT =* IS_REPREP_ID =* I_BYPASSING_BUFFER =* I_BUFFER_ACTIVE =* IR_SALV_HIERSEQ_ADAPTER =* IT_EXCEPT_QINFO =* I_SUPPRESS_EMPTY_DATA = ABAP_FALSE* IMPORTING* E_EXIT_CAUSED_BY_CALLER =* ES_EXIT_CAUSED_BY_USER = TABLES T_OUTTAB_HEADER = LT_HEADER[] T_OUTTAB_ITEM = LT_ITEM[] EXCEPTIONS PROGRAM_ERROR = 1 OTHERS = 2 . IF SY-SUBRC <> 0. MESSAGE ID SY-msgid TYPE SY-MSGTY NUMBER SY-MSGNO WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 . ENDIF.
2. 树状 RS_TREE_LIST_DISPLAY
这个alv比较简单，主要是使用RS_TREE_CONSTRUCT写入node结构，然后调用RS_TREE_LIST_DISPLAY显示即可。功能不算强大
DATA:LT_NODE TYPE TABLE OF SNODETEXT ,WA_NODE LIKE LINE OF LT_NODE . "1.构造node CLEAR :LT_NODE[]. CLEAR WA_NODE. WA_NODE-TYPE = 'T'."TREE 一层 WA_NODE-ID = 'T1'. WA_NODE-NAME = '顶层' . WA_NODE-tlevel = 1. "层次1 WA_NODE-nlength = '15'. WA_NODE-COLOR = '4'. WA_NODE-TEXT = '顶层描述' . WA_NODE-tlength = '10'. WA_NODE-tcolor = 3. APPEND WA_NODE TO LT_NODE . SORT LT_ZTTEST BY MANDT ZWERKS ZNAME . DATA:L_TMP(3) TYPE C . LOOP AT LT_ZTTEST ASSIGNING. AT END OF ZWERKS . CLEAR WA_NODE. WA_NODE-TYPE = 'P'."TREE 一层 WA_NODE-ID = SY-TABIX . WA_NODE-NAME = -ZWERKS . WA_NODE-tlevel = 2. "层次1 WA_NODE-nlength = '15'. WA_NODE-COLOR = '1'. WA_NODE-TEXT = -ZDESC . WA_NODE-tlength = '10'. WA_NODE-tcolor = 3. APPEND WA_NODE TO LT_NODE . LOOP AT LT_ZTTEST INTO WA_ZTTEST WHERE MANDT = -MANDT AND ZWERKS = -ZWERKS. CLEAR WA_NODE. WA_NODE-TYPE = 'P'."TREE 一层 WA_NODE-ID = SY-TABIX . WA_NODE-NAME = WA_ZTTEST-ZNAME . WA_NODE-tlevel = 3. "层次1 WA_NODE-nlength = '15'. WA_NODE-COLOR = '2'. CONCATENATE WA_NODE-ID WA_ZTTEST-zname WA_ZTTEST-ZDESC WA_ZTTEST-ZAREA WA_ZTTEST-ZWERKS INTO WA_NODE-TEXT . WA_NODE-tlength = '200'. WA_NODE-tcolor = 4. APPEND WA_NODE TO LT_NODE . ENDLOOP. ENDAT. ENDLOOP. CALL FUNCTION 'RS_TREE_CONSTRUCT'* EXPORTING* INSERT_ID = '000000'* RELATIONSHIP = ' '* LOG = TABLES NODETAB = LT_NODE* EXCEPTIONS* TREE_FAILURE = 1* ID_NOT_FOUND = 2* WRONG_RELATIONSHIP = 3* OTHERS = 4 . IF SY-SUBRC <> 0.* Implement suitable error handling here ENDIF. "node alv展示 CALL FUNCTION 'RS_TREE_LIST_DISPLAY' EXPORTING CALLBACK_PROGRAM = sy-repid "当前窗口* CALLBACK_USER_COMMAND =* CALLBACK_TEXT_DISPLAY =* CALLBACK_MOREINFO_DISPLAY =* CALLBACK_COLOR_DISPLAY =* CALLBACK_TOP_OF_PAGE =* CALLBACK_GUI_STATUS =* CALLBACK_CONTEXT_MENU = STATUS = 'IMPLICIT' CHECK_DUPLICATE_NAME = '1' COLOR_OF_NODE = '4' COLOR_OF_MARK = '3' COLOR_OF_LINK = '1' COLOR_OF_MATCH = '5'* LOWER_CASE_SENSITIVE = ' '* MODIFICATION_LOG = ' ' NODE_LENGTH = 30 TEXT_LENGTH = 75* TEXT_LENGTH1 = 0* TEXT_LENGTH2 = 0* RETURN_MARKED_SUBTREE = ' '* SCREEN_START_COLUMN = 0* SCREEN_START_LINE = 0* SCREEN_END_COLUMN = 0* SCREEN_END_LINE = 0* SUPPRESS_NODE_OUTPUT = ' '* LAYOUT_MODE = ' '* USE_CONTROL = STREE_USE_LIST* IMPORTING* F15 = . ENDIF.
（三）ooalv
oo alv主要是使用se24的alv相关的类来实现alv报表。主要类有:
1. SALV：cl_gui_alv_grid 、 CL_SALV_TABLE
1.1全屏salv：
DATA : LCL_ALV TYPE REF TO CL_SALV_TABLE, gr_functions TYPE REF TO cl_salv_functions_list, gr_layout TYPE REF TO cl_salv_layout,gs_program TYPE salv_s_layout_key ,"该结构包含了布局变式所属程序名. gr_columns TYPE REF TO cl_salv_columns_table, gr_column TYPE REF TO Cl_salv_column_table.. CL_SALV_TABLE=>FACTORY( EXPORTING list_display = abap_false "是否列表实现 false-grid R_CONTAINER -控件 CONTAINER_NAME容器名 IMPORTING R_SALV_TABLE = LCL_ALV* R_CONTAINER =* CONTAINER_NAME ='' CHANGING T_TABLE = LT_ZTTEST[] ). gr_functions = LCL_ALV->GET_FUNCTIONS( ). gr_functions->SET_DEFAULT( ) . "激活ALV工具栏按钮 "layout 视图保存功能 gr_layout = LCL_ALV->get_layout( ) . gs_program-report = sy-repid ."指定程序 gr_layout->set_key( gs_program ). gr_layout->set_save_restriction( cl_salv_layout=>restrict_none ) . "允许保存标识 "fieldcat:column 设置标题 是否显示列（可以在layout找出来） gr_columns = LCL_ALV->get_columns( ) .* gr_column ?= gr_columns->get_column( 'MANDT' ). "需要处理的列，如隐藏* gr_column->set_visible( cl_salv_columns_table=>false )."隐藏 clear gr_column . gr_column ?= gr_columns->get_column( 'MANDT' ). gr_column->set_long_text('客户端'). gr_column->set_medium_text('客户端'). gr_column->set_short_text('cnt'). gr_column ?= gr_columns->get_column( 'ZNAME' ). gr_column->set_long_text('用户名编码'). gr_column->set_medium_text('用户名'). gr_column->set_short_text('用户'). gr_column ?= gr_columns->get_column( 'ZDESC' ). gr_column->set_long_text('用户描述'). gr_column->set_medium_text('用户名'). gr_column->set_short_text('姓名'). gr_column ?= gr_columns->get_column( 'ZDATE' ). gr_column->set_long_text('用户截止日期'). gr_column->set_medium_text('截止日期'). gr_column->set_short_text('截止日期'). gr_column ?= gr_columns->get_column( 'ZPSW' ). gr_column->set_long_text('用户二级密码'). gr_column->set_medium_text('用户密码'). gr_column->set_short_text('密码'). gr_column ?= gr_columns->get_column( 'ZAREA' ). gr_column->set_long_text('门店所在区域'). gr_column->set_medium_text('区域'). gr_column->set_short_text('区域'). gr_column ?= gr_columns->get_column( 'ZWERKS' ). gr_column->set_long_text('门店编码'). gr_column->set_medium_text('门店'). gr_column->set_short_text('门店'). LCL_ALV->DISPLAY( ). 1.2 指定容器的salv（非必要）
1.新建屏幕并定义停靠容器的类cl_gui_docking_container
2.在POB写入代码 3. CL_SALV_TABLE=>FACTORY(）调用输入R_CONTAINER CONTAINER_NAME 参数，这部分知识后面再看2. 层级ALV：CL_SALV_HIERSEQ_TABLE
DATA: LT_BINDING TYPE SALV_T_HIERSEQ_BINDING ,wa_binding like LINE OF LT_BINDING, GR_TB TYPE REF TO CL_SALV_HIERSEQ_TABLE , BEGIN OF LT_H OCCURS 0, MANDT TYPE MANDT, ZWERKS TYPE WERKS_D, END OF LT_H , BEGIN OF LT_I OCCURS 0, MANDT TYPE MANDT, ZWERKS TYPE WERKS_D, ZNAME TYPE zttest_01-ZNAME, ZDESC TYPE zttest_01-ZDESC, ZDATE TYPE zttest_01-ZDATE, ZAREA TYPE zttest_01-ZAREA, END OF LT_I ,* GS_KEYINFO type slis_keyinfo_alv,"支持5个关联关系 LS_H LIKE LINE OF LT_H, LS_I LIKE LINE OF LT_I . "1.KEY关联值 CLEAR wa_binding. wa_binding-MASTER = 'MANDT'. wa_binding-SLAVE = 'MANDT'. APPEND wa_binding TO LT_BINDING . CLEAR wa_binding. wa_binding-MASTER = 'ZWERKS'. wa_binding-SLAVE = 'ZWERKS'. APPEND wa_binding TO LT_BINDING . "2.数据整理 LOOP AT LT_ZTTEST ASSIGNING. LS_H-ZWERKS = -ZWERKS. LS_H-MANDT = -MANDT. APPEND LS_H TO LT_H . LS_I-MANDT = -MANDT . LS_I-ZWERKS = -ZWERKS. LS_I-ZNAME = -ZNAME. LS_I-zdesc = -zdesc. ls_i-zdate = -zdate . ls_i-zarea = -ZAREA . APPEND LS_I TO LT_I . ENDLOOP. DELETE ADJACENT DUPLICATES FROM LT_H . DELETE ADJACENT DUPLICATES FROM LT_I .* TRY. CALL METHOD CL_SALV_HIERSEQ_TABLE=>FACTORY "这是标准的静态调用方法，通过se38的模式可以自动生成；二上面->是快速的调用方法，在模式显示不出来 EXPORTING T_BINDING_LEVEL1_LEVEL2 = LT_BINDING[] IMPORTING R_HIERSEQ = GR_TB CHANGING T_TABLE_LEVEL1 = LT_H[] T_TABLE_LEVEL2 = LT_I[] .* CATCH CX_SALV_DATA_ERROR .* CATCH CX_SALV_NOT_FOUND .* ENDTRY. "3.定义显示字段、格式等 GET_COLUMNS GET_COLUMNS GET_SORTS GET_LAYOUT等（略） "4.执行显示函数 GR_TB->DISPLAY( ) .
3. 树状ALV
CL_GUI_ALV_TREE或者salv：cl_salv_tree + cl_salv_tree_settings 这里的树状alv相对上面FM的树状比较实用，可以调整很多内容，还是老套路，FACTORY实例化，然后调用其他方法，最后调用DISPLAY().
cl_gui_custom_containerIF C_1 = 'X'. "salv全屏不加container data: gr_tree type ref to cl_salv_tree. data: gt_outtab type standard table of zttest_01. data: lo_nodes type ref to cl_salv_nodes. data: lo_node type ref to cl_salv_node. data: l_relate_key type lvc_nkey. "1.根据数据创建salv树实例 try. cl_salv_tree=>factory( importing r_salv_tree = gr_tree changing t_table = gt_outtab ). "空的表 catch CX_SALV_NO_NEW_DATA_ALLOWED CX_SALV_ERROR. MESSAGE 'FACTORY ERR' type 'S' DISPLAY LIKE 'E'. exit. endtry. "2.添加GUI 状态和按键事件 gr_tree->set_screen_status( pfstatus = 'ZTEST_DYNPROSTA0100' "'SALV_STANDARD' report = SY-repid set_functions = gr_tree->c_functions_all ). "3.FIELDCAT列名和显示格式等 data: lr_columns type ref to cl_salv_columns_tree, lr_column type ref to cl_salv_column. "格式 lr_columns = gr_tree->get_columns( ). lr_columns->set_optimize( ABAP_TRUE )."自动调整 "字段名 lr_column ?= lr_columns->get_column( 'MANDT' ). lr_column->set_technical( if_salv_c_bool_sap=>true )."直接使用技术名称（domain的名称） lr_column ?= lr_columns->get_column( 'ZNAME' ). lr_column->set_long_text('用户名编码'). "指定名称（因为使用char'等非sapdomain，没有技术名称 lr_column->set_medium_text('用户名'). lr_column->set_short_text('用户'). lr_column ?= lr_columns->get_column( 'ZDESC' ). lr_column->set_long_text('用户描述'). lr_column->set_medium_text('用户名'). lr_column->set_short_text('姓名'). lr_column ?= lr_columns->get_column( 'ZDATE' ). lr_column->set_long_text('用户截止日期'). lr_column->set_medium_text('截止日期'). lr_column->set_short_text('截止日期'). lr_column ?= lr_columns->get_column( 'ZPSW' ). lr_column->set_long_text('用户二级密码'). lr_column->set_medium_text('用户密码'). lr_column->set_short_text('密码'). lr_column ?= lr_columns->get_column( 'ZAREA' ). lr_column->set_long_text('门店所在区域'). lr_column->set_medium_text('区域'). lr_column->set_short_text('区域'). lr_column ?= lr_columns->get_column( 'ZWERKS' ). lr_column->set_long_text('门店编码'). lr_column->set_medium_text('门店'). lr_column->set_short_text('门店'). "4.添加node和数据 lo_nodes = gr_tree->get_nodes( ) . LOOP AT LT_ZTTEST ASSIGNING . on CHANGE OF -zwerks. "主 node lo_node = lo_nodes->add_node( related_node = '' "关联的node data_row = "数据行 relationship = cl_salv_nodes=>IF_SALV_C_NODE_RELATION~LAST_CHILD "关联关系 下一层子层 ). l_relate_key = lo_node->get_key( ). endon . on change of -zname . lo_node = lo_nodes->add_node( related_node = l_relate_key "关联的node ,副本node data_row = "数据行 relationship = cl_salv_nodes=>IF_SALV_C_NODE_RELATION~LAST_CHILD "关联关系 下一层子层 ). endon. ENDLOOP. "5.display the table gr_tree->display( ). 
总结
这一节内容到此为止，后面继续找时间总结下增强等进阶知识。ALV的种类就这么多中，但是里面的内容非常多也很实用，大家项目中可以根据业务需求，在se24里面看看细节，修行靠个人。此外sap本身有很多demo程序，可以在se38输入关键字+demo找找用来学习。
转载地址：http://kvcii.baihongyu.com/
你可能感兴趣的文章
Java编程基础：抽象类和接口
查看>>
Java编程基础：异常处理
查看>>
Java编程基础：了解面向对象
查看>>
新一代Java模板引擎Thymeleaf
查看>>
Spring MVC中使用Thymeleaf模板引擎
查看>>
Spring Boot构建简单的微博应用
查看>>
Spring处理表单提交
查看>>
Spring MVC异常处理
查看>>
Leetcode 1180. Count Substrings with Only One Distinct Letter [Python]
查看>>
PHP 7 的五大新特性
查看>>
php使用 memcache 来存储 session
查看>>
php实现socket(转)
查看>>
PHP底层的运行机制与原理
查看>>
php 几个比较实用的函数
查看>>
深入了解php底层机制
查看>>
PHP中的stdClass 【转】
查看>>
XHProf-php轻量级的性能分析工具
查看>>
PHP7新特性 What will be in PHP 7/PHPNG
查看>>
比较strtr, str_replace和preg_replace三个函数的效率
查看>>
ubuntu 下编译PHP5.5.7问题：configure: error: freetype.h not found.
查看>>