我有两个实体管理器配置用于两个单独的数据库,但是当我尝试自动连接实体管理器来配置我的GraphQLEutor bean时,我得到一个异常,说明有两个bean匹配标准,即使我在PersistenceContext中指定了一个单元名称。
异常
org.springframework.beans.factory.BeanCreationException:创建名为“graphQLEutor”的bean时出错:注入资源依赖失败;嵌套的异常是org.springframework.beans.factory. NoUniqueBeanCreationException:没有可用的类型为“javax.persistence. questionManager”的合格bean:应为单个匹配bean,但找到2:org.springframework.orm.jpa.SharedManagerCreator#0,org. springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues上的org.springframework.orm.jpa.SharedNotityManagerCreator#1(CommonAnnotationBeanPostProcessor.java:321)~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory. documentBean(AbstractAutowireCapableBeanFactory.java:553)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory. BeanBean(AbstractAutowireCapableBeanFactory.java:483)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org. springframework. beans. factory. support. AbstractBeanFactory $1.getObject(AbstractBeanFactory.java:306)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.context.support.AbstractApplicationContext. finishBeanFactoryList(AbstractApplicationContext.java:867)~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework. Boot 子.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)~[spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)[spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)[spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)[spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118)[spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)[spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE] at com.ogl.JpaDemoApplication.main(JpaDemoApplication.java:15)[classes/:na] Caused by:org.springframework.beans.factory. NoUniqueBeanExceptionException:No qualifying bean of type 'javax.persistence. PastityManager' available:expected single matching bean but found 2:org.springframework.orm.jpa.SharedManagerCreator#0,org.springframework.orm.jpa.SharedDataManagerCreator#1位于org.springframework.beans.factory.config.DependencyDescriptor.resolveNotUnique(DependencyDescriptor.java:173)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1116)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:518)~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:496)~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:627)~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:169)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE] at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:318)~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE].省略17个公共帧
实体管理器1
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;
}
}
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实体管理器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.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;
}
}
型
注射
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);
}
}
型
pom.xml
<?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>
型
5条答案
按热度按时间uyhoqukh1#
你已经定义了两个entitymanager。现在你必须告诉spring应该注入哪一个。为此,你可以使用
@Qualifier
Annotation:字符串
i5desfxk2#
找到了一个解决方案,通过使用@Component标记我正在用GraphityManager注入的类,然后将该类自动连接到使用GraphQLEutor的类中:
标记为@Component的新类
字符串
类自动布线CompanyGraphQLComponent
型
ojsjcaue3#
你能不能试着在其中一个配置文件中给entityManagerFactory和transactionManager一次注解@Primary?
f0brbegy4#
我有两个问题,标记一个作为主要解决问题
pbpqsu0x5#
SystemJpaConfig.java
字符串
CompanyJpaConfig.java
型