This commit is contained in:
amit2103 2019-11-02 16:05:41 +05:30
parent d47ea19834
commit bb944171a6
4 changed files with 156 additions and 0 deletions

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@ -34,7 +34,21 @@
<groupId>org.springframework.boot</groupId> <groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId> <artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency> </dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<scope>runtime</scope>
</dependency>
<!--JSF --> <!--JSF -->
<dependency> <dependency>

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@ -0,0 +1,118 @@
package com.baeldung.autoconfiguration;
import java.util.Arrays;
import java.util.Properties;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.AutoConfigureOrder;
import org.springframework.boot.autoconfigure.condition.ConditionMessage;
import org.springframework.boot.autoconfigure.condition.ConditionMessage.Style;
import org.springframework.boot.autoconfigure.condition.ConditionOutcome;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.condition.ConditionalOnResource;
import org.springframework.boot.autoconfigure.condition.SpringBootCondition;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.context.annotation.Conditional;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.Ordered;
import org.springframework.core.env.Environment;
import org.springframework.core.type.AnnotatedTypeMetadata;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.util.ClassUtils;
@Configuration
@ConditionalOnClass(DataSource.class)
@AutoConfigureOrder(Ordered.HIGHEST_PRECEDENCE)
@PropertySource("classpath:mysql.properties")
public class MySQLAutoconfiguration {
@Autowired
private Environment env;
@Bean
@ConditionalOnProperty(name = "usemysql", havingValue = "local")
@ConditionalOnMissingBean
public DataSource dataSource() {
final DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("com.mysql.cj.jdbc.Driver");
dataSource.setUrl("jdbc:mysql://localhost:3306/myDb?createDatabaseIfNotExist=true&&serverTimezone=UTC");
dataSource.setUsername("mysqluser");
dataSource.setPassword("mysqlpass");
return dataSource;
}
@Bean(name = "dataSource")
@ConditionalOnProperty(name = "usemysql", havingValue = "custom")
@ConditionalOnMissingBean
public DataSource dataSource2() {
final DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("com.mysql.cj.jdbc.Driver");
dataSource.setUrl(env.getProperty("mysql.url"));
dataSource.setUsername(env.getProperty("mysql.user") != null ? env.getProperty("mysql.user") : "");
dataSource.setPassword(env.getProperty("mysql.pass") != null ? env.getProperty("mysql.pass") : "");
return dataSource;
}
@Bean
@ConditionalOnBean(name = "dataSource")
@ConditionalOnMissingBean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
final LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(dataSource());
em.setPackagesToScan("com.baeldung.autoconfiguration.example");
em.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
if (additionalProperties() != null) {
em.setJpaProperties(additionalProperties());
}
return em;
}
@Bean
@ConditionalOnMissingBean(type = "JpaTransactionManager")
JpaTransactionManager transactionManager(final EntityManagerFactory entityManagerFactory) {
final JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory);
return transactionManager;
}
@ConditionalOnResource(resources = "classpath:mysql.properties")
@Conditional(HibernateCondition.class)
final Properties additionalProperties() {
final Properties hibernateProperties = new Properties();
hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("mysql-hibernate.hbm2ddl.auto"));
hibernateProperties.setProperty("hibernate.dialect", env.getProperty("mysql-hibernate.dialect"));
hibernateProperties.setProperty("hibernate.show_sql", env.getProperty("mysql-hibernate.show_sql") != null ? env.getProperty("mysql-hibernate.show_sql") : "false");
return hibernateProperties;
}
static class HibernateCondition extends SpringBootCondition {
private static final String[] CLASS_NAMES = { "org.hibernate.ejb.HibernateEntityManager", "org.hibernate.jpa.HibernateEntityManager" };
@Override
public ConditionOutcome getMatchOutcome(ConditionContext context, AnnotatedTypeMetadata metadata) {
ConditionMessage.Builder message = ConditionMessage.forCondition("Hibernate");
return Arrays.stream(CLASS_NAMES).filter(className -> ClassUtils.isPresent(className, context.getClassLoader())).map(className -> ConditionOutcome.match(message.found("class").items(Style.NORMAL, className))).findAny()
.orElseGet(() -> ConditionOutcome.noMatch(message.didNotFind("class", "classes").items(Style.NORMAL, Arrays.asList(CLASS_NAMES))));
}
}
}

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usemysql=local
mysql-hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
mysql-hibernate.show_sql=true
mysql-hibernate.hbm2ddl.auto=create-drop

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@ -0,0 +1,19 @@
package org.baeldung;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import com.baeldung.autoconfiguration.MySQLAutoconfiguration;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = MySQLAutoconfiguration.class)
@WebAppConfiguration
public class SpringContextLiveTest {
@Test
public void whenSpringContextIsBootstrapped_thenNoExceptions() {
}
}