SAP RFC from JSP via JCO

이 article shows a simple JSP program calling SAP Remote function module via JCo (SAP Java Connector).
How to create JCO and JDK environment is on another article(Japanese) .
How to create Eclipse and Jetty environment is on another article(Japanese) .

Development Environment

IDE: Eclipse(Oxygen.2 Release (4.7.2))

JDK : Oracle JDK 1.8.0_152 (not SAP JDK)

JCo: SAP Java Connector 3.0.17

Web Server: Jetty(Eclipse plugin "Eclipse Jetty3.9.0"and "Run-Jetty-Run 1.3.5-nightly")

JSP 코드

Very simple program calling function module "STFC_CONNECTION".

<HTML>
<BODY>
    <%@ page language="java" contentType="text/html; charset=Windows-31J"%>
    <%@ page
        import="java.io.File,
                 java.io.FileOutputStream,
                 java.util.Properties,
                 com.sap.conn.jco.JCoAttributes,
                 com.sap.conn.jco.AbapException,
                 com.sap.conn.jco.JCoDestination,
                 com.sap.conn.jco.JCoDestinationManager,
                 com.sap.conn.jco.JCoException,
                 com.sap.conn.jco.ext.DestinationDataProvider,
                 com.sap.conn.jco.JCoFunction"%>
    <%!
    // ABAP Application Server
    static String ABAP_AS = "ABAP_AS_WITHOUT_POOL"; 

    // Destination Properties
    static {
        Properties connectProperties = new Properties();
        connectProperties.setProperty(DestinationDataProvider.JCO_ASHOST, "XXXX"); //host name or ip address
        connectProperties.setProperty(DestinationDataProvider.JCO_SYSNR, "00");
        connectProperties.setProperty(DestinationDataProvider.JCO_CLIENT, "400");
        connectProperties.setProperty(DestinationDataProvider.JCO_USER, "fukuhara");
        connectProperties.setProperty(DestinationDataProvider.JCO_PASSWD, "XXXX"); //password
        connectProperties.setProperty(DestinationDataProvider.JCO_LANG, "en");
        createDataFile(ABAP_AS, "jcoDestination", connectProperties);
    }

    //Create SAP Destination properties
    static void createDataFile(String name, String suffix, Properties properties) {
        File cfg = new File(name + "." + suffix);
        if (!cfg.exists()) {
            try {
                FileOutputStream fos = new FileOutputStream(cfg, false);
                properties.store(fos, "for tests only !");
                fos.close();
            } catch (Exception e) {
                throw new RuntimeException("Unable to create the destination file " + cfg.getName(), e);
            }
        }
    }

    %>
    <%
        //Get Destination
        JCoDestination destination = JCoDestinationManager.getDestination(ABAP_AS);

        //Get metadata of function module "STFC_CONNECTION"
        JCoFunction function = destination.getRepository().getFunction("STFC_CONNECTION");
        if (function == null)
            throw new RuntimeException("TFC_CONNECTION not found in SAP.");

        //Set Import parameter of the function module
        function.getImportParameterList().setValue("REQUTEXT", "Hello SAP");
        try {

            //Call Function
            function.execute(destination);
        } catch (AbapException e) {
            System.out.println(e.toString());
            return;
        }
    %>

    <%-- Get result of the function module--%>
    <H3><%=function.getExportParameterList().getString("ECHOTEXT")%></H3>
    <H3><%=function.getExportParameterList().getString("RESPTEXT")%></H3>

</BODY>
</HTML>

This is the result of JSP screen. The screen displays ABAP system information.

Reference

이 문제에 관하여(SAP RFC from JSP via JCO), 우리는 이곳에서 더 많은 자료를 발견하고 링크를 클릭하여 보았다 https://qiita.com/FukuharaYohei/items/f46b0737f23733b8c94d

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