The Login credentials which I require to connect to database A is stored in different database B.
How can I retrieve those Credentials from database B and connect to database A?
I need this to be achieved via Springboot
You must to use two datasources.
Take a look at following post, it helps me
https://medium.com/#joeclever/using-multiple-datasources-with-spring-boot-and-spring-data-6430b00c02e7
The main idea is to create two datasource configurations and point them to the corresponding package:
package com.foobar;
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(
entityManagerFactoryRef = "entityManagerFactory",
basePackages = { "com.foobar.foo.repo" }
)
public class FooDbConfig {
#Primary
#Bean(name = "dataSource")
#ConfigurationProperties(prefix = "spring.datasource")
public DataSource dataSource() {
return DataSourceBuilder.create().build();
}
#Primary
#Bean(name = "entityManagerFactory")
public LocalContainerEntityManagerFactoryBean
entityManagerFactory(
EntityManagerFactoryBuilder builder,
#Qualifier("dataSource") DataSource dataSource
) {
return builder
.dataSource(dataSource)
.packages("com.foobar.foo.domain")
.persistenceUnit("foo")
.build();
}
#Primary
#Bean(name = "transactionManager")
public PlatformTransactionManager transactionManager(
#Qualifier("entityManagerFactory") EntityManagerFactory
entityManagerFactory
) {
return new JpaTransactionManager(entityManagerFactory);
}
}
Related
I have an application in Spring Boot 1.4 which I'm trying to add additional datasources to.
First I setup a primary datasource and ran the application to check it still worked, and it did. Then I went ahead and added a second datasource, but when I did that I got the following error;
Description:
Field userRepo in com.nationallocums.config.CustomUserDetailsService required a single bean, but 2 were found:
- nlDoctorsEntityManager: defined by method 'nlDoctorsEntityManager' in class path resource [com/nationallocums/config/NLDoctorsDataSourceConfiguration.class]
- primaryEntityManager: defined by method 'primaryEntityManager' in class path resource [com/nationallocums/config/PrimaryDataSourceConfiguration.class]
Action:
Consider marking one of the beans as #Primary, updating the consumer to accept multiple beans, or using #Qualifier to identify the bean that should be consumed
I don't understand why I'm seeing this error, as I've clearly marked one of the datasources with #Primary, but it seems Spring Boot isn't picking that up.
Here's my two datasource configurations;
#Configuration
#EnableJpaRepositories(
entityManagerFactoryRef = "primaryEntityManager",
transactionManagerRef = "primaryTransactionManager",
basePackages = { "com.nationallocums.repository" })
#EnableTransactionManagement
public class PrimaryDataSourceConfiguration {
#Bean(name = "primaryDataSource")
#ConfigurationProperties(prefix = "spring.datasource")
#Primary
public DataSource primaryDataSource() {
return DataSourceBuilder.create().build();
}
#Bean(name = "primaryEntityManager")
#Primary
public LocalContainerEntityManagerFactoryBean primaryEntityManager(final EntityManagerFactoryBuilder builder, #Qualifier("primaryDataSource") final DataSource dataSource) {
final Map<String, String> properties = new HashMap<>();
return builder
.dataSource(dataSource)
.properties(properties)
.packages("com.nationallocums.model")
.persistenceUnit("primary")
.build();
}
#Bean(name = "primaryTransactionManager")
#Primary
public PlatformTransactionManager nlDoctorsTransactionManager(#Qualifier("primaryEntityManager") final EntityManagerFactory entityManagerFactory) {
return new JpaTransactionManager(entityManagerFactory);
}
}
and...
#Configuration
#EnableJpaRepositories(
entityManagerFactoryRef = "nlDoctorsEntityManager",
transactionManagerRef = "nlDoctorsTransactionManager",
basePackages = { "com.nationallocums.eclipse.nldoctorsrepository" })
#EnableTransactionManagement
public class NLDoctorsDataSourceConfiguration {
#Bean(name = "nlDoctorsDataSource")
#ConfigurationProperties(prefix = "spring.nldoctors-datasource")
public DataSource nlDoctorsDataSource() {
return DataSourceBuilder.create().build();
}
#Bean(name = "nlDoctorsEntityManager")
public LocalContainerEntityManagerFactoryBean nlDoctorsEntityManager(final EntityManagerFactoryBuilder builder, #Qualifier("nlDoctorsDataSource") final DataSource dataSource) {
final Map<String, String> properties = new HashMap<>();
return builder
.dataSource(dataSource)
.properties(properties)
.packages("com.nationallocums.eclipse.model")
.persistenceUnit("nlDoctors")
.build();
}
#Bean(name = "nlDoctorsTransactionManager")
public PlatformTransactionManager nlDoctorsTransactionManager(#Qualifier("nlDoctorsEntityManager") final EntityManagerFactory entityManagerFactory) {
return new JpaTransactionManager(entityManagerFactory);
}
}
Can anyone spot what I've done wrong?
I managed to fix this by changing my repository from...
#PersistenceContext
private EntityManager entityManager;
to...
#Autowired
#Qualifier("primaryDataSource")
private EntityManager entityManager;
I am trying to establish 2 database connections in spring boot 2 app. I am getting below error:
java.lang.IllegalArgumentException: Property 'driverClassName' must not be empty
Here is my configuration on Primary db
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(
entityManagerFactoryRef = "myEntityManagerFactory",
basePackages = {"com.cmp.myapp.repository"})
public class PrimDBConfig {
#Primary
#Bean(name = "primaryDataSource")
#ConfigurationProperties(prefix = "spring.datasource")
public DataSource dataSource() {
return DataSourceBuilder.create().build();
}
#PersistenceContext(unitName = "primdb")
#Primary
#Bean(name = "entityManagerFactory")
public LocalContainerEntityManagerFactoryBean entityManagerFactory(
EntityManagerFactoryBuilder builder,
#Qualifier("primaryDataSource") DataSource dataSource) {
return builder
.dataSource(dataSource)
.packages("com.cmp.myapp.dto")
.persistenceUnit("primdb")
.build();
}
#Primary
#Bean(name = "transactionManager")
public PlatformTransactionManager transactionManager(
#Qualifier("myEntityManagerFactory") EntityManagerFactory entityManagerFactory) {
return new JpaTransactionManager(entityManagerFactory);
}
}
Here is the secondary db connection
#Configuration
public class SecDBConfig {
#Autowired
Environment env;
#Bean(name = "secDataSource")
#ConfigurationProperties(prefix = "secondary.datasource")
public DataSource wiseDataSource() {
DriverManagerDataSource ds = new DriverManagerDataSource();
ds.setUrl(env.getProperty("secondary.datasource.jdbc-url"));
ds.setDriverClassName(env.getProperty("secondary.datasource.driverClassName"));
ds.setUsername(env.getProperty("secondary.datasource.username"));
ds.setPassword(env.getProperty("secondary.datasource.password"));
return ds;
}
}
My application.properties file as below:
spring.datasource.jdbc-url=jdbc:sqlserver://xxx
spring.datasource.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver
spring.datasource.username=xxxx
spring.datasource.password=xxxx
spring.datasource.validation-query=select 1
spring.datasource.testOnBorrow=true
secondary.datasource.jdbc-url=jdbc:as400://xxxxxx;
secondary.datasource.driverClassName=com.ibm.as400.access.AS400JDBCDriver
secondary.datasource.username=xxxxx
secondary.datasource.password=xxxxxx
secondary.datasource.testOnBorrow=true
secondary.datasource.validation-query=select 1 from sysibm.sysdummy1
May I know what I'm doing wrong here, please advice. Thanks in advance
One of the reasons I can think of is, you have added this prefix
#ConfigurationProperties(prefix = "secondary.datasource")
Then accessing driverClassName using complete path
ds.setDriverClassName(env.getProperty("secondary.datasource.driverClassName"));
I think you should remove the prefix and try accessing.
This blog may also help you. https://howtodoinjava.com/spring-boot2/datasource-configuration/
I am using Spring JPA Repository to connect to Oracle.
My Repository package is com.demo.infrastructure.repository;
Repository class is StoreRepo.java
#Repository
public interface StoreRepo extends JpaRepository<StoreAttribute, String> {
#Query("select storeAttributeName from StoreAttribute order by storeAttributeName asc")
List<String> fetchAllStoreAttributeNames();
List<StoreAttribute> findAllByOrderByStoreAttributeNameAsc();
}
Problem:
I am using JNDI config to configure data source. Currently it has only one JNDI entry. Now I want to use two user names for the same database, one with admin(read-write) access and the other with user(read-only) access. Both these users will access the same Repository and same entity.
I tried the solutions already available which uses two different repository packages for each data source. But I want the Repository "StoreRepo" to be the same.
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(
entityManagerFactoryRef = "entityManagerFactoryAdmin",
basePackages = { "com.demo.infrastructure.repository" }
)
public class DataSourceAdminConfig {
#Primary
#Bean(name = "dataSourceAdmin")
public DataSource dataSource() {
return new JndiDataSourceLookup().getDataSource("jdbc/myds_admin");
}
#Primary
#Bean(name = "entityManagerFactoryAdmin")
public LocalContainerEntityManagerFactoryBean
entityManagerFactory(
EntityManagerFactoryBuilder builder,
#Qualifier("dataSourceAdmin") DataSource dataSource
) {
return builder.dataSource(dataSource).
packages("com.demo.domain.model.entities").
persistenceUnit("read-write").
build();
}
#Primary
#Bean(name = "transactionManagerAdmin")
public PlatformTransactionManager transactionManager(
#Qualifier("entityManagerFactoryAdmin") EntityManagerFactory
entityManagerFactory
) {
return new JpaTransactionManager(entityManagerFactory);
}
}
I should have two classes like this with different package (Refer basePackages). But I dont want this solution instead want to use single repository package and the same repository class.
Solution that worked for me.
1) Created separate config classes one for admin user and app user each
2) Created seprate entity manager references one for admin user and app user each
3) Instantiated the same Repositoy class (without using #Repository annotation) through java code and using respective entity manager
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(
entityManagerFactoryRef = "entityManagerFactoryAdmin"
)
public class AdminUserConfig {
#Primary
#Bean(name = "dataSourceAdmin")
public DataSource dataSourceAdmin(#Value("${spring.datasource.admin-user.jndi-name}") String key) {
return new JndiDataSourceLookup().getDataSource(key);
}
#Primary
#Bean(name = "entityManagerFactoryAdmin")
public LocalContainerEntityManagerFactoryBean entityManagerFactoryAdmin(
EntityManagerFactoryBuilder builder,
#Qualifier("dataSourceAdmin") DataSource dataSource
) {
return builder.dataSource(dataSource).
packages("com.demo.domain.model.entities").
persistenceUnit("read-write").
build();
}
#Bean(name = "entityManagerAdmin")
public EntityManager entityManagerAdmin(#Qualifier("entityManagerFactoryAdmin") EntityManagerFactory
entityManagerFactory) {
return SharedEntityManagerCreator.createSharedEntityManager(entityManagerFactory);
}
#Bean(name = "adminRepository")
public StoreRepo readWriteDimStoreRepository(#Qualifier("jpaRepositoryFactoryAdmin")
JpaRepositoryFactory repositoryFactory) {
return repositoryFactory.getRepository(StoreRepo.class);
}
}
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(
entityManagerFactoryRef = "entityManagerFactoryApp"
)
public class AppUserConfig {
#Primary
#Bean(name = "dataSourceApp")
public DataSource dataSourceApp(#Value("${spring.datasource.App-user.jndi-name}") String key) {
return new JndiDataSourceLookup().getDataSource(key);
}
#Primary
#Bean(name = "entityManagerFactoryApp")
public LocalContainerEntityManagerFactoryBean entityManagerFactoryApp(
EntityManagerFactoryBuilder builder,
#Qualifier("dataSourceApp") DataSource dataSource
) {
return builder.dataSource(dataSource).
packages("com.demo.domain.model.entities").
persistenceUnit("read-only").
build();
}
#Bean(name = "entityManagerAdmin")
public EntityManager entityManagerApp(#Qualifier("entityManagerFactoryApp") EntityManagerFactory
entityManagerFactory) {
return SharedEntityManagerCreator.createSharedEntityManager(entityManagerFactory);
}
#Bean(name = "AppRepository")
public StoreRepo readOnlyStoreRepository(#Qualifier("jpaRepositoryFactoryApp")
JpaRepositoryFactory repositoryFactory) {
return repositoryFactory.getRepository(StoreRepo.class);
}
}
//#Repository
public interface StoreRepo extends JpaRepository<StoreAttribute, String> {
#Query("select storeAttributeName from StoreAttribute order by
storeAttributeName asc")
List<String> fetchAllStoreAttributeNames();
List<StoreAttribute> findAllByOrderByStoreAttributeNameAsc();
}
I have a Spring + Hibernate project with configured DataSource:
#Configuration
#Component
public class DataSourceConfig {
#ConfigurationProperties(prefix = "spring.datasource")
#Bean
public DataSource getDataSource() {
return DataSourceBuilder
.create()
.url("jdbc:firebirdsql://**********:3050/mydb?charSet=utf8")
.username("*****")
.password("*****")
.driverClassName("org.firebirdsql.jdbc.FBDriver")
.build();
}
}
EntityManagerFactoriesConfig:
#Configuration
public class EntityManagerFactoriesConfig {
#Autowired
private DataSource dataSource;
#Bean(name = "entityManagerFactory")
public LocalContainerEntityManagerFactoryBean emf() {
LocalContainerEntityManagerFactoryBean emf = new LocalContainerEntityManagerFactoryBean();
emf.setDataSource(dataSource);
emf.setPackagesToScan(
new String[]{"ekoncept"});
emf.setJpaVendorAdapter(
new HibernateJpaVendorAdapter());
return emf;
}
}
TransactionManagerConfig:
#EnableTransactionManagement
public class TransactionManagersConfig {
#Autowired
EntityManagerFactory emf;
#Autowired
private DataSource dataSource;
#Bean(name = "transactionManager")
public PlatformTransactionManager transactionManager() {
JpaTransactionManager tm =
new JpaTransactionManager();
tm.setEntityManagerFactory(emf);
tm.setDataSource(dataSource);
return tm;
}
}
and that's all, no db config in application.properties.
Now I want to access EntityManager or EntityManagerFactory to execute SQL. I know that I should use #Query annotation with Spring, but in this one case I need to execute a simple SQL. I was trying to do it in many ways and finally in all cases I got EntityManager==null. How to get access to Entity manager or EntityManagerFactory??
I'm using Spring Boot. I finally managed to setup two data sources, but now I'm facing another issue.
with two data sources in place spring.jpa.hibernate.ddl-auto=create seems to stop working in my spring boot application, only spring.jpa.generate-ddl=true do the job now
I can not manage to select the auto-creation strategy for each of the data sources. I would prefer to create the schema for data source one, and just use the created schema in second DB with data source two.
Any body have idea how to resolve any of these issues? Note I don't want to completely throw away the auto-config if possible. I don't even know yet, if hibernate is able to just initialize schema in one persistence unit.
application.properties
spring.datasource-internal.url=jdbc:hsqldb:mem:testdb
spring.datasource-internal.username=sa
spring.datasource-internal.password=sa
spring.datasource-internal.driver-class-name=org.hsqldb.jdbcDriver
spring.datasource-internal.jpa.database-platform=org.hibernate.dialect.HSQLDialect
spring.datasource-external.url=jdbc:hsqldb:mem:testexternal
spring.datasource-external.username=sa
spring.datasource-external.password=sa
spring.datasource-external.driver-class-name=org.hsqldb.jdbcDriver
spring.datasource-external.jpa.database-platform=org.hibernate.dialect.HSQLDialect
flyway.enabled=false
spring.jpa.hibernate.ddl-auto=create
spring.jpa.show-sql=true
spring.jpa.generate-ddl=true
DBInternalConfig
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(basePackages = "cz.data.internal",
entityManagerFactoryRef = "internalEntityManagerFactory",
transactionManagerRef = "internalTransactionManager")
public class DBConfigInternal {
public static final String INTERNAL = "internal";
#Bean(name = "internalDataSource")
#Primary
#ConfigurationProperties(prefix = "spring.datasource-internal")
public DataSource internalDataSource() {
return DataSourceBuilder.create().build();
}
#Bean(name = "internalEntityManagerFactory")
#Primary
public LocalContainerEntityManagerFactoryBean internalEntityManagerFactory(
EntityManagerFactoryBuilder builder) {
return builder
.dataSource(internalDataSource())
.packages("cz.data.internal.entity")
.persistenceUnit(INTERNAL)
.build();
}
#Bean(name = "internalTransactionManager")
#Primary
public PlatformTransactionManager internalTransactionManager() {
JpaTransactionManager jpaTransactionManager = new JpaTransactionManager();
jpaTransactionManager.setDataSource(internalDataSource());
jpaTransactionManager.setPersistenceUnitName(INTERNAL);
return jpaTransactionManager;
}
}
DBExternalConfig
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(
basePackages = "cz.data.external",
entityManagerFactoryRef = "externalEntityManagerFactory",
transactionManagerRef = "externalTransactionManager")
public class DBConfigExternal {
public static final String EXTERNAL = "external";
#Bean(name = "externalDataSource")
#ConfigurationProperties(prefix = "spring.datasource-external")
public DataSource externalDataSource() {
return DataSourceBuilder.create().build();
}
#Bean(name = "externalEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean externalEntityManagerFactory(
EntityManagerFactoryBuilder builder) {
return builder
.dataSource(externalDataSource())
.packages("cz.data.external.entity")
.persistenceUnit(EXTERNAL)
.build();
}
#Bean(name = "externalTransactionManager")
public PlatformTransactionManager externalTransactionManager() {
JpaTransactionManager jpaTransactionManager = new JpaTransactionManager();
jpaTransactionManager.setDataSource(externalDataSource());
jpaTransactionManager.setPersistenceUnitName(EXTERNAL);
return jpaTransactionManager;
}
}
M.W.
spring.jpa.hibernate.ddl-auto=create has stopped working, not because you have two DataSources, but because your application's creating its own LocalContainerEntityManagerFactoryBeans. This has the effect of disabling the auto-configuration of a LocalContainerEntityManagerFactoryBean so you now have to configure it yourself.
You can configure the two entity managers to have different schema generation behaviour like this (the first's doing update, the second's doing create):
#Bean(name = "externalEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean externalEntityManagerFactory(
EntityManagerFactoryBuilder builder) {
Map<String, Object> properties = new HashMap<String, Object>();
properties.put("hibernate.hbm2ddl.auto", "update");
return builder
.dataSource(externalDataSource())
.packages("cz.data.external.entity")
.persistenceUnit(EXTERNAL)
.properties(properties)
.build();
}
#Bean(name = "internalEntityManagerFactory")
#Primary
public LocalContainerEntityManagerFactoryBean internalEntityManagerFactory(
EntityManagerFactoryBuilder builder) {
Map<String, Object> properties = new HashMap<String, Object>();
properties.put("hibernate.hbm2ddl.auto", "create");
return builder
.dataSource(internalDataSource())
.packages("cz.data.internal.entity")
.persistenceUnit(INTERNAL)
.properties(properties)
.build();
}