Access Live SAP Data in Spring Boot

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SAP ERP JDBC Driver

Straightforward SAP ERP integration. Now accessing SAP RFC's from any JDBC client is as easy as querying a database.



Connect to SAP in a Spring Boot Application using CData JDBC SAP Driver

Spring Boot is a framework that makes engineering Java web applications easier. It offers the ability to create standalone applications with minimal configuration. When paired with the CData JDBC driver for SAP, Spring Boot can work with live SAP data. This article shows how to configure data sources and retrieve data in your Java Spring Boot Application, using the CData JDBC Driver for SAP.

With built-in optimized data processing, the CData JDBC Driver offers unmatched performance for interacting with live SAP data. When you issue complex SQL queries to SAP, the driver pushes supported SQL operations, like filters and aggregations, directly to SAP and utilizes the embedded SQL engine to process unsupported operations client-side (often SQL functions and JOIN operations). Its built-in dynamic metadata querying allows you to work with and analyze SAP data using native data types.

Creating the Spring Boot Project in Java

In an IDE (in this tutorial, we use IntelliJ), choose a Maven project: In the generated project, go to the pom.xml file, and add the required dependencies for Spring Boot:

<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.7.2</version> <relativePath/> </parent> <groupId>com.example</groupId> <artifactId>demo</artifactId> <version>0.0.1-SNAPSHOT</version> <name>demo</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-install-plugin</artifactId> <version>2.5.1</version> <executions> <execution> <id>id.install-file</id> <phase>clean</phase> <goals> <goal>install-file</goal> </goals> <configuration> <file>C:\Program Files\CData\CData JDBC Driver for SAP ####\lib\cdata.jdbc.saperp.jar</file> <groupId>org.cdata.connectors</groupId> <artifactId>cdata-saperp-connector</artifactId> <version>21</version> <packaging>jar</packaging> </configuration> </execution> </executions> </plugin> </plugins> </build> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> <version>2.7.0</version> </dependency> <dependency> <groupId>org.cdata.connectors</groupId> <artifactId>cdata-saperp-connector</artifactId> <version>21</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <distributionManagement> <repository> <uniqueVersion>false</uniqueVersion> <id>test</id> <name>My Repository</name> <url>scp://repo/maven2</url> <layout>default</layout> </repository> </distributionManagement> </project>

Project Structure

In the java directory, create a new package. Usually the name of the package is the name of the groupId (com.example) followed by the artifactId (.MDS).

Make sure that the "java" directory is the sources root; this is indicated with a blue color. You may need to right click the java directory and select Mark Directory -> Sources Root. Also, the resources directory should be marked as Resources Root.

Database Connection Properties

In the application.properties file, we set the configuration properties for the SAP JDBC Driver, using the Class name and JDBC URL:

spring.datasource.driver=cdata.jdbc.saperp.SAPERPDriver spring.datasource.url=jdbc:saperp:Host=sap.mydomain.com;User=EXT90033;Password=xxx;Client=800;System Number=09;ConnectionType=Classic;Location=C:/mysapschemafolder;

Built-in Connection String Designer

For assistance in constructing the JDBC URL, use the connection string designer built into the SAP JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

java -jar cdata.jdbc.saperp.jar

The driver supports connecting to an SAP system using the JCo JAR file. See the "Getting Started" chapter in the help documentation for information on using the Jco JAR file.

In addition, you can connect to an SAP system using Web services (SOAP). To use Web services, you must enable SOAP access to your SAP system and set the Client, RFCUrl, User, and Password properties, under the Authentication section.

For more information, see this guide on obtaining the connection properties needed to connect to any SAP system.

After setting the properties in the application.properties file, we now configure them.

Data Source Configuration

First, we mark the SAP data source as our primary data source. Then, we create a Data Source Bean.

Create a DriverManagerDataSource.java file and create a Bean within it, as shown below. If @Bean gives an error, Spring Boot may not have loaded properly. To fix this, go to File -> Invalidate Caches and restart. Additionally, make sure that Maven has added the Spring Boot dependencies.

To create a data source bean, we use DriverManagerDataSource Class. This class allows us to set the properties of the data source. The following code shows the bean definition of our data source. Each driver should have a bean.

import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.jdbc.DataSourceBuilder; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Primary; import org.springframework.core.env.Environment; import javax.sql.DataSource; public class DriverManagerDataSource{ @Autowired private static Environment env; @Bean(name ="SAPERP") @Primary public static DataSource SAPERPDataSource() { DataSourceBuilder<?> dataSourceBuilder = DataSourceBuilder.create(); dataSourceBuilder.driverClassName("cdata.jdbc.saperp.SAPERPDriver"); dataSourceBuilder.url("jdbc:saperp:Host=sap.mydomain.com;User=EXT90033;Password=xxx;Client=800;System Number=09;ConnectionType=Classic;Location=C:/mysapschemafolder;"); return dataSourceBuilder.build(); } //@Override public void setEnvironment( final Environment environment) { env=environment; } }

Next, move the SAP jar file to the Documents folder (see path in command below). Then, click the Maven icon (top right corner of IntelliJ) and click "Execute Maven Goal." Now, run the following command: mvn install:install-file -Dfile=C:\Program Files\CData\CData JDBC Driver for SAP ####\lib\cdata.jdbc.saperp.jar -DgroupId=cdata.jdbc.saperp -DartifactId=cdata-saperp-connector -Dversion=21 -Dpackaging=jar

After pressing enter, we see the following output:

Testing the Connection

The last step is testing the connection. We call the data source in the main method of MDSApplication.java:

import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration; import java.sql.Connection; import java.sql.SQLException; import static com.example.demo.DriverManagerDataSources.SAPERPDataSource; @SpringBootApplication(exclude = {DataSourceAutoConfiguration.class}) public class MDSApplication { //remove the comment on the line below public static void main (){ SpringApplication.run(DemoApplication.class, args); Connection conn = SAPERPDataSource().getConnection(); System.out.println("Catalog: "+ conn.getCatalog()); } }

The output generated should look like this:

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