SpringBoot直连SAP，IJ IDEA开发与Windows，linux部署

要在Spring Boot应用程序中直连SAP，你可以使用SAP提供的连接库，如JCo (Java Connector)。以下是一个简化的步骤和示例代码，展示如何在Spring Boot项目中配置和使用JCo来连接SAP。

1. 添加JCo库依赖到你的pom.xml中：

<dependency>
    <groupId>com.sap.conn.jco</groupId>
    <artifactId>sapjco3</artifactId>
    <version>你的版本号</version>
</dependency>

2. 配置JCo连接属性，通常在application.properties或application.yml中：

# SAP连接配置
sap.jco.client.client=
sap.jco.client.language=EN
sap.jco.client.passwd=
sap.jco.client.user=
sap.jco.destination.host=sap_host
sap.jco.destination.client=
sap.jco.destination.sysnr=00
sap.jco.destination.sysid=SID
sap.jco.destination.user=SAP_USER

3. 创建配置类来加载JCo属性并初始化连接：

import com.sap.conn.jco.ext.DestinationDataProvider;
import com.sap.conn.jco.JCoDestination;
import com.sap.conn.jco.JCoDestinationManager;
import com.sap.conn.jco.JCoException;
import com.sap.conn.jco.JCoDestination;
 
@Configuration
public class SapConfiguration {
 
    @Value("${sap.jco.destination.name}")
    private String destinationName;
 
    @Bean
    public DestinationDataProvider destinationDataProvider() {
        return () -> {
            Properties connectProperties = new Properties();
            connectProperties.setProperty(DestinationDataProvider.JCO_ASHOST, "host");
            connectProperties.setProperty(DestinationDataProvider.JCO_SYSNR, "systemNumber");
            connectProperties.setProperty(DestinationDataProvider.JCO_CLIENT, "client");
            connectProperties.setProperty(DestinationDataProvider.JCO_USER, "username");
            connectProperties.setProperty(DestinationDataProvider.JCO_PASSWD, "password");
            connectProperties.setProperty(DestinationDataProvider.JCO_LANG, "EN");
            return connectProperties;
        };
    }
 
    @Bean
    public JCoDestination destination() throws JCoException {
        return JCoDestinationManager.getDestination(destinationName);
    }
}

4. 创建服务类来执行SAP RFC调用：

import com.sap.conn.jco.JCoFunction;
import com.sap.conn.jco.JCoDestination;
import com.sap.conn.jco.JCoContext;
 
@Service
public class SapService {
 
    @Autowired
    private JCoDestination destination;
 
    public String executeRfc() throws Exception {
        JCoFunction function = destination.getRepository().getFunction("RFC_NAME");
        JCoContext.begin(destination);
        try {
            function.execute(destination);
            // 获取输出参数