conton koneksi ke database postgresql

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
       xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:jpa="http://www.springframework.org/schema/data/jpa"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
                http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
                http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">

    <context:annotation-config />
    <!-- Sesuaikan dengan nama package dao (data access object) yang telah dibuat atau mau dibuat -->
    <context:component-scan base-package="com.asm.dao" />

    <!-- Local Database -->
    <bean id="dsSPA" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="org.postgresql.Driver" />
        <property name="url" value="jdbc:postgresql://172.168.100.10:5436/db_SampleProjectSpringHibernate" />
        <property name="username" value="postgres"/>
        <property name="password" value="postgres"/>
    </bean>
    <bean id="entityManagerFactoryInternal" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="dataSource" ref="dsSPA"/>
        <property name="loadTimeWeaver">
            <bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver"/>
        </property>
        <!-- Sesuaikan dengan nama package entity  yang telah atau mau dibuat -->
        <property name="packagesToScan" value="com.asm.entity"/>
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                <property name="databasePlatform" value="org.hibernate.dialect.PostgreSQLDialect" />
                <!-- showsql = true sama dengan menampilkan sql atau query di log-->
                <property name="showSql" value="true" />
                <!-- generateddl= true  sama dengan create tables and fields in database (syarat database sudah tersedia, otomatis generate tabel dan column)-->
                <property name="generateDdl" value="true" />
            </bean>
        </property>
        <property name="jpaProperties">
            <props>
                <prop key="hibernate.format_sql">true</prop>
            </props>
        </property>
    </bean>
    <!-- transactionManagerInternal biasa dipakai buat aksi simpan, ubah, hapus, cari dll
                contoh :
                @Transactional(value = "transactionManagerInternal")
                public void save(BusPendaftaran data) {
                em.persist(data);
                }

                @Transactional(value = "transactionManagerInternal")
                public void update(BusPendaftaran data) {
                em.merge(data);
                }
        -->
    <bean id="transactionManagerInternal" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactoryInternal"/>
        <property name="jpaDialect">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
        </property>
    </bean>
    <!-- sharedEntityManagerInternal = (Resource / EntityManager)
                contoh :
                @Resource(name = "sharedEntityManagerInternal")
                private EntityManager em;
        -->
    <bean id="sharedEntityManagerInternal" name="sharedEntityManagerInternal" class="org.springframework.orm.jpa.support.SharedEntityManagerBean">
        <property name = "entityManagerFactory" ref="entityManagerFactoryInternal"/>
    </bean>
    <tx:annotation-driven transaction-manager="transactionManagerInternal" />
</beans>