代码:用JCO访问RFC

package com.demo;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;

import com.sap.conn.jco.AbapException;
import com.sap.conn.jco.JCoDestination;
import com.sap.conn.jco.JCoDestinationManager;
import com.sap.conn.jco.JCoException;
import com.sap.conn.jco.JCoFunction;
import com.sap.conn.jco.ext.DestinationDataProvider;

public class JCOClientDemo {
	static String ABAP_AS = "ABAP_AS_WITHOUT_POOL";
	static String ABAP_AS_POOLED = "ABAP_AS_WITH_POOL";
	static {
		Properties connectProperties = new Properties();
		connectProperties.setProperty(DestinationDataProvider.JCO_ASHOST, "10.57.1.144");
		connectProperties.setProperty(DestinationDataProvider.JCO_SYSNR, "10");
//		connectProperties.setProperty(DestinationDataProvider.JCO_R3NAME, "C01");
		connectProperties.setProperty(DestinationDataProvider.JCO_CLIENT, "700");
		connectProperties.setProperty(DestinationDataProvider.JCO_USER, "AC_CHENTH");
		connectProperties.setProperty(DestinationDataProvider.JCO_PASSWD, "accentu1");
		connectProperties.setProperty(DestinationDataProvider.JCO_LANG, "en");
		createDataFile(ABAP_AS, "jcoDestination", connectProperties);

		connectProperties.setProperty(DestinationDataProvider.JCO_POOL_CAPACITY, "3");
		connectProperties.setProperty(DestinationDataProvider.JCO_PEAK_LIMIT, "5");
		createDataFile(ABAP_AS_POOLED, "jcoDestination", connectProperties);
	}

	static void createDataFile(String name, String suffix, Properties properties) {
		File cfg = new File(name + "." + suffix);
		if (!cfg.exists()) {
			FileOutputStream fos = null;
			try {
				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);
			} finally {
				try {
					fos.close();
				} catch (IOException e) {
				}
			}
		}
	}

	public static void call() throws JCoException {
		JCoDestination destination = JCoDestinationManager.getDestination(ABAP_AS_POOLED);
		JCoFunction function = destination.getRepository().getFunction("STFC_CONNECTION");
		if (function == null)
			throw new RuntimeException("STFC_CONNECTION not found in SAP.");

		function.getImportParameterList().setValue("REQUTEXT", "Hello SAP");

		try {
			function.execute(destination);
		} catch (AbapException e) {
			System.out.println(e.toString());
			return;
		}

		System.out.println("STFC_CONNECTION finished:");
		System.out.println(" Echo: " + function.getExportParameterList().getString("ECHOTEXT"));
		System.out.println(" Response: " + function.getExportParameterList().getString("RESPTEXT"));
		System.out.println();
	}

	public static void main(String[] args) {
		try {
			JCOClientDemo.call();
		} catch (JCoException e) {
			e.printStackTrace();
		}
	}
}