ABAP--一个极好的调用外部java程序的Search Help Exit的实例（RFC好例子）

2024-01-10 07:20
文章标签 java 程序 实例 调用 例子 外部 search rfc help abap exit 极好

本文主要是介绍ABAP--一个极好的调用外部java程序的Search Help Exit的实例（RFC好例子），希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

分享一下我老师大神的人工智能教程！零基础，通俗易懂！http://blog.csdn.net/jiangjunshow

也欢迎大家转载本篇文章。分享知识，造福人民，实现我们中华民族伟大复兴！

 

Connecting to an external source via Java Connector
(By Bob Billings)
Overview... 1
1st. The Collective Search Help. 2
2nd. The Elementary Search Help. 3
3rd. The View that supports the Elementary Search Help. 3
4th. The SM59 transaction defining the RFC destination connection.4
5th. ABAP. 4
6th. JAVA.. 6
Overview
In the process of SAP Order Entry (VA01) it became necessary to provide a “fuzzy” search help from an external source using the Java Connector for a material lookup. I.e. SAP does not store all the possible search options to return a material number. Additional searchable fields related to a material are maintained in an external system and we want to search on these fields.
The way this was accomplished was through an Elementary search help that used the search help exit to connect via a remote function call to the Java Connector. The Elementary search help was then added to a Collective search help via the Included search help list and connected using the parameter assignment button. 
Three code snippets follow:
  • The function call which accepts the request and processes the results,
  •    
  • the remote function which is merely a conduit to and from the remote destination, and
  •    
  • a part of the Java code that accepts input from SAP and returns an internal table of results.
1st. The Collective Search Help
2nd. The Elementary Search Help
3rd. The View that supports the Elementary Search Help
4th. The SM59 transaction defining the RFC destination connection.
 
5th. ABAP
The global data top include for the actual exit contains the following:
type-pools shlp.
type-pools f4typ. "Brücke zu alten F4-Bausteinen
tables: ddshdefsh. "Tabelle der Default-Suchhilfen
data %shlpname like dd30v-shlpname.   
constants: par%domname like ddshfprop-fieldname value 'DOMNAME',
par%value like ddshfprop-fieldname value 'VALUE',
par%text like ddshfprop-fieldname value 'TEXT',
par%_low like ddshfprop-fieldname value'_LOW',
par%_high like ddshfprop-fieldname value'_HIGH',
par%_text like ddshfprop-fieldname value'_TEXT',
par%rollname like ddshfprop-fieldname value 'ROLLNAME',
par%tabname like ddshfprop-fieldname value 'TABNAME'.
Search help exit definition:
FUNCTION Z_F4_ZMAT_EXIT.
*"----------------------------------------------------------------------
*"*"Local interface:
*" TABLES
*"      SHLP_TAB TYPE SHLP_DESCR_TAB_T
*"      RECORD_TAB STRUCTURE SEAHLPRES
*" CHANGING
*"     VALUE(SHLP) TYPE SHLP_DESCR_T
*"     VALUE(CALLCONTROL) LIKE DDSHF4CTRL STRUCTURE  DDSHF4CTRL
*"----------------------------------------------------------------------
data: matnr like mara-matnr,
maktx like makt-maktx,
desc like makt-maktx,
recs_to_return like lfa1-bbsnr,
recs_returned like lfa1-bbsnr,
is_selopt    like DDSHSELOPT,
is_shlp_tab like line of shlp_tab,
is_interface like line of shlp_tab-interface.
data: begin of it_return occurs 0.
include structure ZPM_RETURN.
data: end of it_return.
data: begin of is_disp,
filler type char005,
matnr like mara-matnr,
maktx like makt-maktx,
end   of is_disp.
data: is_return like line of it_return.
*************************************************************
Case callcontrol-step.
*************************************************************
when 'SELONE' or 'PRESEL1' or 'PRESEL' or 'DISP'.
exit.
when 'SELECT'.
clear: is_disp.
refresh: record_tab.
** Find the search item & number of lines to return
read table shlp_tab index 1 into is_shlp_tab.
read table is_shlp_tab-interface index 1 into is_interface.
if not is_interface-value is initial.
maktx = is_interface-value.
else.
read table shlp-selopt index 1 into is_selopt.
maktx = is_selopt-low.
endif.
recs_to_return = callcontrol-maxrecords.
** call dummy FM that is remotely enabled. The Java listener
** is looking for destination SAP_JAVA
CALL FUNCTION 'Z_RFC_TO_PM'
DESTINATION 'SAP_JAVA'
EXPORTING
MAKTG             = maktx
max_lines         = recs_to_return
IMPORTING
COUNT             = recs_returned
TABLES
RESULT_TAB        = it_return.
if recs_returned > 0.
** put the return table into search help display table
loop at it_return into is_return.
is_disp-matnr = is_return-matnr.
is_disp-maktx = is_return-maktx.
append is_disp to record_tab.
endloop.
else.
is_disp-matnr = '*************'.
is_disp-maktx = 'Nothing returned'.
append is_disp to record_tab.
endif.
callcontrol-step = 'DISP'.
exit.
when others.
exit.
endcase.
ENDFUNCTION.
** Remotely enabled function module
FUNCTION Z_RFC_TO_PM.
*"----------------------------------------------------------------------
*"*"Local interface:
*" IMPORTING
*"     VALUE(MAKTG) LIKE MAKT-MAKTG
*"     VALUE(MAX_LINES) LIKE LFA1-BBSNR
*" EXPORTING
*"     VALUE(COUNT) LIKE LFA1-BBSNR
*" TABLES
*"      RESULT_TAB STRUCTURE ZPM_RETURN
*"----------------------------------------------------------------------
ENDFUNCTION.


6th. JAVA
This is the method in server class that handles incoming RFC calls:
public void handleRequest(JCO.Function pFunction) throws java.lang.Exception
    {
        String className = resolveClassName(pFunction.getName());
if (className != null)
        {
            IMethod method = (IMethod) Class.forName(className).newInstance();
            method.execute(pFunction.getImportParameterList(),
                           pFunction.getExportParameterList(),
                           pFunction.getTableParameterList());
        } else
        {
            //Throw JCO.AbapException if we don't handle Function.
            throw new NotSupportedException();
        }
    }
And this one does the work:
public void execute(JCO.ParameterList pImportParameters,
                        JCO.ParameterList pExportParameters,
                        JCO.ParameterList pTableParameters) throws PMVSException
    {
        JCO.Table table = pTableParameters.getTable("RESULT_TAB");
        String searchString = pImportParameters.getString("MAKTG");
        int maxReturn = new Integer(pImportParameters.getString("MAX_LINES")).intValue();
try
        {
            ValuesCollection[] results = search(searchString, maxReturn);
if (results != null)
            {
                String count = "" + results.length;
                pExportParameters.setValue(count, "COUNT");
                for (int i = 0; i<results.length; i++)
                {
                    DisplayAttrValue[] vals;
                    String partnum;
                    String desc;
//Get part num
                    vals = results[i].get("A-ManufacturerPartNumber");
                    partnum = vals.length > 0 ? vals[0].getDisplayString() : "null";
//Get description
                    vals = results[i].get("A-Description");
                    desc = vals.length > 0 ? vals[0].getDisplayString() : "null";
if (partnum.length() > 18)
                    {
                        partnum = partnum.substring(0,18);
                    }
                    if (desc.length() > 40)
                    {
                        desc = desc.substring(0,40);
                    }
                    table.appendRow();
                    table.setValue(partnum, "MATNR");
                    table.setValue(desc, "MAKTX");
                }
                pTableParameters.setValue(table, "RESULT_TAB");
            } else
            {
                pExportParameters.setValue("0", "COUNT");
            }
        } catch (Exception exc)
        {
            exc.printStackTrace();
        }
    }
url： http://www.erpgenie.com/sapgenie/docs/search%20help%20to%20java.doc
           

给我老师的人工智能教程打call！http://blog.csdn.net/jiangjunshow
这里写图片描述

这篇关于ABAP--一个极好的调用外部java程序的Search Help Exit的实例（RFC好例子）的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！


http://www.chinasem.cn/article/589995。

相关文章

springboot集成easypoi导出word换行处理过程

springboot集成easypoi导出word换行处理过程

《springboot集成easypoi导出word换行处理过程》SpringBoot集成Easypoi导出Word时,换行符n失效显示为空格,解决方法包括生成段落或替换模板中n为回车,同时需确... 目录项目场景问题描述解决方案第一种：生成段落的方式第二种：替换模板的情况，换行符替换成回车总结项目场景s
阅读更多...
SpringBoot集成redisson实现延时队列教程

SpringBoot集成redisson实现延时队列教程

《SpringBoot集成redisson实现延时队列教程》文章介绍了使用Redisson实现延迟队列的完整步骤,包括依赖导入、Redis配置、工具类封装、业务枚举定义、执行器实现、Bean创建、消费... 目录1、先给项目导入Redisson依赖2、配置redis3、创建 RedissonConfig 配
阅读更多...
SpringBoot中@Value注入静态变量方式

SpringBoot中@Value注入静态变量方式

《SpringBoot中@Value注入静态变量方式》SpringBoot中静态变量无法直接用@Value注入,需通过setter方法,@Value(${})从属性文件获取值,@Value(#{})用... 目录项目场景解决方案注解说明1、@Value("${}")使用示例2、@Value("#{}"php
阅读更多...
SpringBoot分段处理List集合多线程批量插入数据方式

SpringBoot分段处理List集合多线程批量插入数据方式

《SpringBoot分段处理List集合多线程批量插入数据方式》文章介绍如何处理大数据量List批量插入数据库的优化方案：通过拆分List并分配独立线程处理,结合Spring线程池与异步方法提升效率... 目录项目场景解决方案1.实体类2.Mapper3.spring容器注入线程池bejsan对象4.创建
阅读更多...
线上Java OOM问题定位与解决方案超详细解析

线上Java OOM问题定位与解决方案超详细解析

《线上JavaOOM问题定位与解决方案超详细解析》OOM是JVM抛出的错误,表示内存分配失败,：本文主要介绍线上JavaOOM问题定位与解决方案的相关资料,文中通过代码介绍的非常详细,需要的朋... 目录一、OOM问题核心认知1.1 OOM定义与技术定位1.2 OOM常见类型及技术特征二、OOM问题定位工具
阅读更多...
基于 Cursor 开发 Spring Boot 项目详细攻略

基于 Cursor 开发 Spring Boot 项目详细攻略

《基于Cursor开发SpringBoot项目详细攻略》Cursor是集成GPT4、Claude3.5等LLM的VSCode类AI编程工具,支持SpringBoot项目开发全流程,涵盖环境配... 目录cursor是什么？基于 Cursor 开发 Spring Boot 项目完整指南1. 环境准备2. 创建
阅读更多...
Spring Security简介、使用与最佳实践

Spring Security简介、使用与最佳实践

《SpringSecurity简介、使用与最佳实践》SpringSecurity是一个能够为基于Spring的企业应用系统提供声明式的安全访问控制解决方案的安全框架,本文给大家介绍SpringSec... 目录一、如何理解 Spring Security？—— 核心思想二、如何在 Java 项目中使用？——
阅读更多...
SpringBoot+RustFS 实现文件切片极速上传的实例代码

SpringBoot+RustFS 实现文件切片极速上传的实例代码

《SpringBoot+RustFS实现文件切片极速上传的实例代码》本文介绍利用SpringBoot和RustFS构建高性能文件切片上传系统,实现大文件秒传、断点续传和分片上传等功能,具有一定的参考... 目录一、为什么选择 RustFS + SpringBoot？二、环境准备与部署2.1 安装 RustF
阅读更多...
springboot中使用okhttp3的小结

springboot中使用okhttp3的小结

《springboot中使用okhttp3的小结》OkHttp3是一个JavaHTTP客户端,可以处理各种请求类型,比如GET、POST、PUT等,并且支持高效的HTTP连接池、请求和响应缓存、以及异... 在 Spring Boot 项目中使用 OkHttp3 进行 HTTP 请求是一个高效且流行的方式。
阅读更多...
java.sql.SQLTransientConnectionException连接超时异常原因及解决方案

java.sql.SQLTransientConnectionException连接超时异常原因及解决方案

《java.sql.SQLTransientConnectionException连接超时异常原因及解决方案》：本文主要介绍java.sql.SQLTransientConnectionExcep... 目录一、引言二、异常信息分析三、可能的原因3.1 连接池配置不合理3.2 数据库负载过高3.3 连接泄漏
阅读更多...

Copyright China编程 23002807@qq.com

沪ICP备2023033072号-2