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Spring TransactionManagementConfigurer Example

By Arvind Rai, November 25, 2021
This page will walk through Spring TransactionManagementConfigurer example.
1. The TransactionManagementConfigurer interface is implemented by the configuration class annotated with @Configuration and @EnableTransactionManagement. We need to override its annotationDrivenTransactionManager() method.
2. By using TransactionManagementConfigurer, we can explicitly specify the default PlatformTransactionManager or ReactiveTransactionManager bean to be used for annotation-driven transaction management, as opposed to the default approach of a by-type lookup.
3. It is useful in the case when there are two PlatformTransactionManager or ReactiveTransactionManager beans in the container.
4. The TransactionManagementConfigurer is introduced in Spring 3.1.
5. It is used as following.
@Configuration
@EnableTransactionManagement
public class AppConfig implements TransactionManagementConfigurer {
     ------
     @Override
     public PlatformTransactionManager annotationDrivenTransactionManager() {
         return txManager();
     }
} 




Using TransactionManagementConfigurer

Find the complete example.
AppConfig.java
package com.concretepage;
import javax.sql.DataSource;
import org.apache.commons.dbcp.BasicDataSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.transaction.annotation.TransactionManagementConfigurer;
import com.concretepage.persistence.User;

@Configuration
@EnableTransactionManagement
public class AppConfig implements TransactionManagementConfigurer {
     @Bean
     public User user() {
 	 return new User();
     }

     @Bean
     public DataSource dataSource() {
	 BasicDataSource bs=new BasicDataSource();
	 bs.setDriverClassName("org.hibernate.dialect.MySQLDialect");
	 bs.setUrl("jdbc:mysql://localhost:3306/hibernate");
	 bs.setUsername("root");
	 bs.setPassword("");
	 return bs;
     }

     @Bean
     public PlatformTransactionManager txManager() {
         return new DataSourceTransactionManager(dataSource());
     }

     @Override
     public PlatformTransactionManager annotationDrivenTransactionManager() {
         return txManager();
     }
} 
AppTest.java
package com.concretepage;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import javax.sql.DataSource;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
public class AppTest {
	public static void main(String[] args) throws SQLException {
		AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
 
		ctx.register(AppConfig.class);
		ctx.refresh();

		DataSource ds= ctx.getBean(DataSource.class);
		Connection con=ds.getConnection();
		Statement st=con.createStatement();
		st.executeUpdate("insert into user values (1,'Aakash')");
			
	}
} 

Reference

Interface TransactionManagementConfigurer
POSTED BY
ARVIND RAI
ARVIND RAI











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