JAVA使用JCO实现调用SAP接口方法

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一、配置连接

(1)第一种连接配置

1.根据操作系统将sapjco3.dll文件放入C:\Windows\System32目录;
2.在项目中引入sapjco3.jar包;
3.创建DisplaySalesActivity.java类,配置生成连接

public class DisplaySalesActivity {    static String DESTINATION_NAME1 = "ABAP_AS_WITHOUT_POOL";    static String DESTINATION_NAME2 = "ABAP_AS_WITH_POOL";    //配置连接    static {        Properties connectProperties = new Properties();        connectProperties.setProperty(DestinationDataProvider.JCO_ASHOST, "127.0.0.1");//IP        connectProperties.setProperty(DestinationDataProvider.JCO_SYSNR, "00");//系统编号        connectProperties.setProperty(DestinationDataProvider.JCO_CLIENT, "001");//客户端编号        connectProperties.setProperty(DestinationDataProvider.JCO_USER, "username");//用户名        connectProperties.setProperty(DestinationDataProvider.JCO_PASSWD, "password");//密码        connectProperties.setProperty(DestinationDataProvider.JCO_LANG, "zh");//语言        createDestinationDataFile(DESTINATION_NAME1, connectProperties);        connectProperties.setProperty(DestinationDataProvider.JCO_POOL_CAPACITY, "30");//最大空闲连接数        connectProperties.setProperty(DestinationDataProvider.JCO_PEAK_LIMIT, "150");//最大活动连接数        createDestinationDataFile(DESTINATION_NAME2, connectProperties);    }    /*    *创建配置连接文件    /    static void createDestinationDataFile(String destinationName, Properties connectProperties) {        File destCfg = new File(destinationName + ".jcoDestination");        try {            FileOutputStream fos = new FileOutputStream(destCfg, false);            connectProperties.store(fos, "For tests only !");            fos.close();        } catch (Exception e) {            throw new RuntimeException("Unable to create the destination files", e);        }    }    /*    *获取连接    /    public static JCoDestination getSAPDestination() throws JCoException {        JCoDestination destination = JCoDestinationManager.getDestination(DESTINATION_NAME2);        return destination;    }    public static void main(String[] args) throws JCoException {        getSAPDestination();    }

配置好后运行main方法,生成2个连接配置文件(DESTINATION_NAME1 与DESTINATION_NAME2 )和2个日志文件,如果
在Tomcat中运行,配置好生成地址可以直接在应用中调连接方法。

(2)第二种连接配置

1.配置环境:
下载sapjco3.dll插件置放在JDK或Tomcat的bin文件夹下
下载sapjco3.jar置放工程中

2.配置访问属性文件
SAPConnectionPool.properties

jco.client.lang=zh #语言
jco.destination.peak_limit=150 #最大活动连接数
jco.client.client=001 #客户端编号
jco.client.passwd=password #密码
jco.client.user=username #用户名
jco.client.sysnr=00 #系统编号
jco.destination.pool_capacity=30 #最大空闲连接数
jco.client.ashost=127.0.0.1 #IP

3.封装获取链接池链接Java类,以便接口使用时调用

SAPConnectionPool类:

@Service("SAPConnectionPool")public class SAPConnectionPool {    private static final String SAP_CONN="SAP_CONN";    public static JCoDestination getSAPDestination(){        try {            JCoDestination dest = JCoDestinationManager.getDestination(SAP_CONN);            return dest;        } catch (JCoException ex) {                //System.out.println(ex);                //System.out.println("连接失败,重新连接!");                //重新连接                return RegetJocodestination();        }               }       /*****    * 函数功能描述:重新获取JCODestination    * @return    ****     */    public static JCoDestination RegetJocodestination(){        try{            Properties properFile = new Properties();            ClassLoader cl=Thread.currentThread().getContextClassLoader();            String filePath=cl.getResource("").toString()+"SAPConnectionPool.properties";            filePath=filePath.replace("file:", "");            filePath=filePath.replace("%20", " ");//替换文件名包含空格的            FileInputStream inputFile = new FileInputStream(filePath);            properFile.load(inputFile);            inputFile.close();            Properties connectProperties = new Properties();            connectProperties.setProperty(DestinationDataProvider.JCO_ASHOST, properFile.getProperty("jco.client.ashost"));            connectProperties.setProperty(DestinationDataProvider.JCO_SYSNR,  properFile.getProperty("jco.client.sysnr"));            connectProperties.setProperty(DestinationDataProvider.JCO_CLIENT, properFile.getProperty("jco.client.client"));            connectProperties.setProperty(DestinationDataProvider.JCO_USER,   properFile.getProperty("jco.client.user"));            connectProperties.setProperty(DestinationDataProvider.JCO_PASSWD, properFile.getProperty("jco.client.passwd"));            connectProperties.setProperty(DestinationDataProvider.JCO_POOL_CAPACITY, properFile.getProperty("jco.destination.pool_capacity"));            connectProperties.setProperty(DestinationDataProvider.JCO_PEAK_LIMIT,   properFile.getProperty("jco.destination.peak_limit"));            connectProperties.setProperty(DestinationDataProvider.JCO_LANG,   properFile.getProperty("jco.client.lang"));            CustomDestinationDataProvider provider = new CustomDestinationDataProvider();            provider.addDestinationProperties(SAP_CONN, connectProperties);            Environment.registerDestinationDataProvider(provider);            try {                JCoDestination dest = JCoDestinationManager.getDestination(SAP_CONN);                return dest;            } catch (JCoException ex) {                    System.out.println(ex);                    System.out.println("重新连接失败");            }                   }catch(Exception e){            e.printStackTrace();        }        return null;            }}

CustomDestinationDataProvider类

public class CustomDestinationDataProvider implements DestinationDataProvider {    private Map providers = new HashMap();    @Override    public Properties getDestinationProperties(String destName) {       if (destName == null)           throw new NullPointerException("请指定目的名称");       if (providers.size() == 0)           throw new IllegalStateException("请加入一个目的连接参数属性给提供者");       return (Properties)providers.get(destName);   }   // 没有实现事件处理   @Override   public boolean supportsEvents(){       return false;   }   @Override   public void setDestinationDataEventListener(DestinationDataEventListener listener) {       throw new UnsupportedOperationException();   }   public void addDestinationProperties(String destName, Properties provider) {       providers.put(destName, provider);   }}

二、接口调用

JCO采用的是中间式接口,即外部系统将SAP系统所需的信息生成中间数据表,SAP系统直接读取中间文件或将中间表中的信息写入数据库中,中间式接口是比较常用的一种方式,这种方式外部系统和SAP系统相对独立,接口不涉及双方内部的结构,而且接口的责任也很明确,数据的安全性也得到了保证。但这种方式存在的问题就是两个系统的数据同步性稍差一些,但只要合理地规定读写中间文件或数据表的时间,数据的同步性是不会影响使用的。

以下是我在项目中用到的参数传递的方法调用,应该基本满足部分接口调用,例:

JCoDestination destination =SAPConnectionPool.getSAPDestination();//获取连接//返回一个JCoFunction初始参数的传递函数名。获取接口方法JCoFunction function = destination.getRepository().getFunction("Function_NAME");//1.单独的参数,不在表结构下function.getImportParameterList().setValue("NAME1", "VALUE1");// 参数//2.JCoStructure 一般为HEADER参数JCoStructure Structure=function.getImportParameterList().getStructure("_HEADER");Structure.setValue("NAME1", "VALUE1");//参数Structure.setValue("NAME2", "VALUE2");//参数//3.JCoTable 主体参数,可为多个主体参数。。。JCoTable headerImportParam = function.getTableParameterList().getTable("_TABLE");//返回的值i个字段作为一个表//如果为参数集合,在外层加for循环即可headerImportParam.appendRow();//附加表的最后一个新行,行指针,它指向新添加的行。headerImportParam.setValue("NAME1", "VALUE1");//参数headerImportParam.setValue("NAME2", "VALUE2");//参数//执行接口function.execute(destination);//接口返回结果JCoTable returnStructure = function.getTableParameterList().getTable("TD_RETURN");for (int i = 0; i < returnStructure.getNumRows(); i++) {    returnStructure.setRow(i);      System.out.println(returnStructure.getString("Param1"));    System.out.println(returnStructure.getString("Param2"));}       
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