Use spring session JDBC with existing database (not springboot)

Question

I have my application running with spring web mvc framework without spring boot. Now I want to use spring session JDBC to store the session to the database used by the app. All the examples I found online are using spring boot, and if not using spring boot, the datasource config they use are EmbeddedDatabase like this:

    @Bean
    public EmbeddedDatabase dataSource() {
            return new EmbeddedDatabaseBuilder() 
                            .setType(EmbeddedDatabaseType.H2)
                            .addScript("org/springframework/session/jdbc/schema-h2.sql").build();
    }

I have my datasource configuration using HikariCP and I want the spring session to use this datasource config.

@Bean
public DataSource dataSource() {
    HikariConfig config = new HikariConfig();
    config.setDriverClassName(env.getRequiredProperty("jdbc.driver"));
    config.setJdbcUrl(env.getRequiredProperty("jdbc.url"));
    config.setUsername(env.getRequiredProperty("jdbc.username"));
    config.setPassword(env.getRequiredProperty("jdbc.password"));
    config.setMinimumIdle(env.getRequiredProperty("jdbc.pool.minimumIdle", Integer.class));
    config.setMaximumPoolSize(env.getRequiredProperty("jdbc.pool.maximumPoolSize", Integer.class));
    config.addDataSourceProperty("cachePrepStmts", env.getRequiredProperty("jdbc.prop.cachePrepStmts"));
    config.addDataSourceProperty("prepStmtCacheSize", env.getRequiredProperty("jdbc.prop.prepStmtCacheSize"));
    config.addDataSourceProperty("prepStmtCacheSqlLimit", env.getRequiredProperty("jdbc.prop.prepStmtCacheSqlLimit"));
    HikariDataSource ds = new HikariDataSource(config);
    return ds;
}

How can I use my current configuration to integrate with spring session?

Answer 1

As I understand spring-session javaconfig-jdbc sample / doc, you "just" need to:

1. Annotate "your config class" (YourConfig) with org.springframework.session.jdbc.config.annotation.web.http.EnableJdbcHttpSession.

2. Name your DataSource "dataSource". (done!;)

3. Provide a PlatformTransactionManager bean, basing on dataSource in YourConfig.

4. (in a servlet environment - as yours) Introduce an AbstractHttpSessionApplicationInitializer (in class path) referencing YourConfig:

   public class Initializer extends org.springframework.session.web.context.AbstractHttpSessionApplicationInitializer { // <1>
   
     public Initializer() {
       super(YourConfig.class); // <2>
     }
   }
   

---

If you wish to install the db schema manually or with an external tool, the SQL scripts are located in spring-session.jar(!org/springframework/session/jdbc/schema-@@platform@@.sql) file or respectively in the source code repository.

---

These (application.)properties allow further customization:

# Session store type. [jdbc|redis|hazelcast|mongodb]
spring.session.store-type=jdbc
# Session timeout. If a duration suffix is not specified, seconds will be used.
server.servlet.session.timeout= 
# Database schema initialization mode. [alwys | never | embedded]
spring.session.jdbc.initialize-schema=always 
# Path to the SQL file to use to initialize the database schema.(see: https://github.com/spring-projects/spring-session/tree/master/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc)
spring.session.jdbc.schema=classpath:org/springframework/session/jdbc/schema-@@platform@@.sql
# custom spring session table name (see : https://github.com/spring-projects/spring-session/issues/1230) 
spring.session.jdbc.table-name=SPRING_SESSION

---

• In the jar/source ditribution, you'll find also "cleanup" (-drop) scripts

• and the currently provided platforms are:

  db2
  derby
  h2
  hsqldb
  mysql
  oracle
  postgresql
  sqlite
  sqlserver
  sybase
  

Answer 2

@Autowired
    private Environment env;

@Bean
    public PlatformTransactionManager transactionManager () {

        EntityManagerFactory factory = entityManagerFactory();
        return new JpaTransactionManager(factory);
    }


@Bean
    public EntityManagerFactory entityManagerFactory () {
        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        vendorAdapter.setShowSql(Boolean.TRUE);
        LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
        factory.setJpaVendorAdapter(vendorAdapter);
        factory.setPackagesToScan("com.your.domain.project");
        factory.setDataSource(dataSource());
        factory.setJpaProperties(additionalProperties()); // any addtional properties of your ORM
        factory.afterPropertiesSet();
        factory.setLoadTimeWeaver(new InstrumentationLoadTimeWeaver());
        return factory.getObject();
    }


@Bean
    public DataSource dataSource () {

        final com.mchange.v2.c3p0.ComboPooledDataSource comboDataSource = new ComboPooledDataSource();

        try {
            comboDataSource.setDriverClass(env.getProperty("jdbc.driver"));
            comboDataSource.setJdbcUrl(env.getProperty("jdbc.url"));
            comboDataSource.setUser(env.getProperty("jdbc.user"));
            comboDataSource.setPassword(env.getProperty("jdbc.properties"));

        } catch (PropertyVetoException e) {
            e.printStackTrace();
        }
        return comboDataSource;
    }

This will definitely helps you.