JAVA使用JCo连接SAP-2

添加工具类：

package utils;

import java.util.*;
import java.io.*;

@SuppressWarnings({"serial","rawtypes","unchecked"})
public class OrderedProperties extends java.util.Properties {
	
	public ArrayList orderedKeys = new ArrayList();
	
	public OrderedProperties() {
		super();
	}
	
	public OrderedProperties(java.util.Properties defaults) {
		super(defaults);
	}
	
	public synchronized Iterator getKeysIterator() {
		return orderedKeys.iterator();
	} 
	
	public static OrderedProperties load(String name)
			throws IOException {
		OrderedProperties props = null;
		java.io.InputStream is =
				OrderedProperties.class.getResourceAsStream(name);
		if ( is != null ) {
			props = new OrderedProperties();
			props.load(is);
			return props;
		} else {
			if ( ! name.startsWith("/") ) {
				return load("/" + name);
			} else {
				throw new IOException("Properties could not be loaded.");
			}
		}
	}
	
	public synchronized Object put(Object key, Object value) {
		Object obj = super.put(key, value);
		orderedKeys.add(key);
		return obj;
	}
	
	public synchronized Object remove(Object key) {
		Object obj = super.remove(key);
		orderedKeys.remove(key);
		return obj;
	}
	
}

再创建一个RfcManager的类（DataBean），用来读取src目录下的sap_conf.properties 来注册Provider，获取RFC Function和执行execute（）方法。

sap_conf.properties

#LTJ 2018-05-02
#IP addr
#JCO_ASHOST=160.46.86.57:3620
#SYSTEM CODE
#JCO_SYSNR=30
#CLIENT
#JCO_CLIENT=100
#USER NAME
#JCO_USER=RFC_SCTS
#PASSWORD
#JCO_PASSWD=start567
#LANGUAGE
#JCO_LANG=EN
#MAX NOUSE LINK
#JCO_POOL_CAPACITY=50
#MAX ACTIVE LINK
#JCO_PEAK_LIMIT=30


jco.client.client=100
jco.client.user=RFC_SCTS
jco.client.passwd=start567
jco.client.ashost=tchdcs20.bmwbrill.cn
jco.client.sysnr=20
jco.client.lang=EN
jco.client.group=PUBLIC
jco.client.r3name=CHD
jco.client.msserv=3620
jco.client.mshost=tchdcs20.bmwbrill.cn

DataBean.java

package utils;


import com.sap.mw.jco.*;
import com.sap.vo.SctsAfcAsnCvVO;
import com.sap.vo.SctsAfcPrednCvVO;
import com.sap.vo.SctsJisAsnCvVO;
import com.sap.vo.SctsJitCallofCvVO;
import com.sap.vo.SctsLoadunitVO;
import com.sap.vo.SctsPackageVO;
import com.sap.vo.SctsPartVO;
import com.sap.vo.SctsPlantCalendarVO;
import com.sap.vo.SctsSupplierVO;
import com.sap.vo.SctsTransportRateVO;

import java.text.SimpleDateFormat;
import java.util.*;



@SuppressWarnings({"deprecation","unused"})
public class DataBean {

	static final String POOL_NAME = "ConnectionPool";
	static final String CHAR_ENCODING = "gbk";
	static final String CHARSET_NAME = "8859_1";
	//private JCO.Client aConnection;
	private IRepository aRepository;
	String encyptionInfo="";

	public DataBean() {
		createConnection();
		retrieveRepository();
	}

	private void createConnection() {
		try { 
			JCO.Pool pool = JCO.getClientPoolManager().getPool( POOL_NAME );
			if ( pool == null ) {
				OrderedProperties logonProperties = OrderedProperties.load( "/sap_conf.properties" );
				JCO.addClientPool(POOL_NAME,		// pool name
						15,				// maximum number of connections
						logonProperties);	// properties
			}
		}
		catch ( Exception ex ) {
			ex.printStackTrace();
		}
	}

	public void releaseConnection( JCO.Client aConnection ) {
		JCO.releaseClient( aConnection );
	}

	private void retrieveRepository() {
		try {
			aRepository = new JCO.Repository( "SAPRep", POOL_NAME );
		}
		catch ( Exception ex ) {
			System.out.println( "Failed to retrieve SAP repository" );
		}
	}

	public JCO.Function getFunction( String name ) {
		try {
			return aRepository.getFunctionTemplate( name.toUpperCase() ).getFunction();
		}
		catch ( Exception ex ) {
			System.out.println(ex.getMessage());
			return null;
		}
	}

	/***
	 * @param functionName 程序名
	 * @param tableName 输出参数
	 * @return Map<Integer, List<Map<String,String>> >
	 */
	public Map<Integer, List<Map<String,String>> > getParameters(String functionName, String tableName){
		Map<Integer, List<Map<String,String>> > map =new HashMap<>();
		//使用jco连接
		JCO.Client client = JCO.getClient(POOL_NAME);
		try {
			// 获取RFC对象
			JCO.Function function = getFunction(functionName);
			// 设置import 参数
			JCO.ParameterList listParams = function.getImportParameterList();
			listParams.setValue( "0010139910", "IV_LIFNR" );
			listParams.setValue( "SY78", "IV_WERKS");
			 // 执行RFC
			client.execute( function );
			//获取table数据
			JCO.Table tab = function.getTableParameterList().getTable(tableName);

			for(int i = 0 ; i < tab.getNumRows() ;i ++) {
				//设置行
				tab.setRow(i);
				String s = "" ;
				List<Map<String,String>> list = new ArrayList<>();
				for(int j = 0 ; j < tab.getNumColumns() ; j ++) {
					Map<String,String> maps= new HashMap<>();
					s = (String) tab.getField(j).getValue();
					maps.put(tab.getName(j), s);
					list.add(maps);
					map.put(i, list);
				}
			}
			System.out.println(map);

		}
		catch ( JCO.AbapException ex ) {
			if ( ex.getKey().equalsIgnoreCase( "ERROR" ) ) {
				System.out.println( "-----------There is no record in the table ZQC_QA_INTERFACE.-----------" );
			}
			else {
				System.out.println( ex.getMessage() );
			}
		}
		catch ( Exception ex ) {
			System.out.println( "Caught an exception: \n" + ex );
		}
		finally {
			JCO.releaseClient( client );
		}

		return map;
	}
}

我这里用的springMVC，前端通过页面调用controller层调用DataBean.getParameters（）方法即可获取到SAP的参数值了。