У меня есть две конфигурации диспетчера сущностей для двух отдельных баз данных, но когда я пытаюсь автоматически подключить диспетчер сущностей для настройки моего bean-компонента GraphQLExecutor, я получаю исключение о том, что есть два bean-компонента, которые соответствуют критериям, хотя я указал имя модуля в PersistenceContext.
Исключение
Entity Manager 1
Entity Manager 2
package com.ogl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.Database;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
import javax.sql.DataSource;
@Configuration
@EnableJpaRepositories(basePackages = "com.ogl.system", entityManagerFactoryRef = "companyEntityManagerFactory", transactionManagerRef = "companyTransactionManager")
public class SystemJpaConfig {
private final Environment environment;
@Autowired
public SystemJpaConfig(Environment environment) {
this.environment = environment;
}
@Bean("systemEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean systemEntityManagerFactory() {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setPackagesToScan("com.ogl.system");
entityManagerFactoryBean.setPersistenceUnitName("system");
entityManagerFactoryBean.setDataSource(systemDataSource());
HibernateJpaVendorAdapter adapter = new HibernateJpaVendorAdapter();
adapter.setDatabase(Database.POSTGRESQL);
adapter.setShowSql(true);
adapter.setGenerateDdl(false);
entityManagerFactoryBean.setJpaVendorAdapter(adapter);
return entityManagerFactoryBean;
}
@Bean
DataSource systemDataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(environment.getProperty("p4.datasource.driver"));
dataSource.setUrl(environment.getProperty("p4.system.url"));
dataSource.setUsername(environment.getProperty("p4.system.user"));
dataSource.setPassword(environment.getProperty("p4.system.password"));
return dataSource;
}
@Bean
public PlatformTransactionManager systemTransactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory((systemEntityManagerFactory().getObject()));
return transactionManager;
}
}
Инъекция
package com.ogl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.Database;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
import javax.sql.DataSource;
@Configuration
@EnableJpaRepositories(basePackages = "com.ogl.company", entityManagerFactoryRef = "companyEntityManagerFactory", transactionManagerRef = "companyTransactionManager")
public class CompanyJpaConfig {
private final Environment environment;
@Autowired
public CompanyJpaConfig(Environment environment) {
this.environment = environment;
}
@Primary
@Bean("companyEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean companyEntityManagerFactory() {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setPackagesToScan("com.ogl.company");
entityManagerFactoryBean.setPersistenceUnitName("company");
entityManagerFactoryBean.setDataSource(companyDataSource());
HibernateJpaVendorAdapter adapter = new HibernateJpaVendorAdapter();
adapter.setDatabase(Database.POSTGRESQL);
adapter.setShowSql(true);
adapter.setGenerateDdl(false);
entityManagerFactoryBean.setJpaVendorAdapter(adapter);
return entityManagerFactoryBean;
}
@Bean
DataSource companyDataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(environment.getProperty("p4.datasource.driver"));
dataSource.setUrl(environment.getProperty("p4.company.url"));
dataSource.setUsername(environment.getProperty("p4.company.user"));
dataSource.setPassword(environment.getProperty("p4.company.password"));
return dataSource;
}
@Primary
@Bean
public PlatformTransactionManager companyTransactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory((companyEntityManagerFactory().getObject()));
return transactionManager;
}
}
pom.xml
package com.ogl;
import org.crygier.graphql.GraphQLExecutor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
@Configuration
@ComponentScan
public class GraphQLJpaConfig {
@PersistenceContext(unitName = "company")
private EntityManager entityManager;
@Bean
public GraphQLExecutor graphQLExecutor() {
return new GraphQLExecutor(entityManager);
}
}
Вы определили два entitymanager. Теперь вам нужно указать пружине, которую следует вводить. Для этого вы можете использовать аннотацию
package com.ogl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.Database;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
import javax.sql.DataSource;
@Configuration
@EnableJpaRepositories(basePackages = "com.ogl.system", entityManagerFactoryRef = "companyEntityManagerFactory", transactionManagerRef = "companyTransactionManager")
public class SystemJpaConfig {
private final Environment environment;
@Autowired
public SystemJpaConfig(Environment environment) {
this.environment = environment;
}
@Bean("systemEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean systemEntityManagerFactory() {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setPackagesToScan("com.ogl.system");
entityManagerFactoryBean.setPersistenceUnitName("system");
entityManagerFactoryBean.setDataSource(systemDataSource());
HibernateJpaVendorAdapter adapter = new HibernateJpaVendorAdapter();
adapter.setDatabase(Database.POSTGRESQL);
adapter.setShowSql(true);
adapter.setGenerateDdl(false);
entityManagerFactoryBean.setJpaVendorAdapter(adapter);
return entityManagerFactoryBean;
}
@Bean
DataSource systemDataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(environment.getProperty("p4.datasource.driver"));
dataSource.setUrl(environment.getProperty("p4.system.url"));
dataSource.setUsername(environment.getProperty("p4.system.user"));
dataSource.setPassword(environment.getProperty("p4.system.password"));
return dataSource;
}
@Bean
public PlatformTransactionManager systemTransactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory((systemEntityManagerFactory().getObject()));
return transactionManager;
}
}
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.ogl</groupId>
<artifactId>jpa-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>jpa-demo</name>
<description>Demo project for JPA</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.graphql-java</groupId>
<artifactId>graphql-java</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.crygier</groupId>
<artifactId>graphql-jpa</artifactId>
<version>0.3</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
