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我尝试将 Spring R2DBC 与 postgres 驱动程序一起使用。我有以下存储库：

package fr.misc.database.repos.computed;

import fr.misc.database.entities.computed.OrdreDeTravailPivotComputedEntity;
import org.springframework.data.repository.reactive.ReactiveCrudRepository;

public interface OrderRepository extends ReactiveCrudRepository<OrderEntity, String> {

}

我尝试了几个这样的注释：

package fr.misc;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.data.r2dbc.repository.config.EnableR2dbcRepositories;

@EnableJpaRepositories(basePackages = {"fr.misc.database.repos.common"})
@EntityScan("fr.misc")
@ComponentScan("fr.misc")
@SpringBootApplication
@EnableConfigurationProperties
@EnableR2dbcRepositories("fr.misc.database.repos.computed")
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

我的连接工厂是这样的：

package fr.misc;

import io.r2dbc.spi.ConnectionFactories;
import io.r2dbc.spi.ConnectionFactory;
import io.r2dbc.spi.ConnectionFactoryOptions;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.r2dbc.config.AbstractR2dbcConfiguration;

@Configuration
public class DatabaseConfiguration extends AbstractR2dbcConfiguration {

    @Value("${spring.data.postgres.host")
    private String host;
    @Value("${spring.data.postgres.port}")
    private int port;
    @Value("${spring.data.postgres.database}")
    private String database;
    @Value("${spring.data.postgres.username}")
    private String username;
    @Value("${spring.data.postgres.password}")
    private String password;

    @Override
    public ConnectionFactory connectionFactory() {
//      return new PostgresqlConnectionFactory(PostgresqlConnectionConfiguration.builder().host(host)
//              .port(port).database(database).username(username).password(password).build());
        return ConnectionFactories.get(ConnectionFactoryOptions.builder()
                .option(DRIVER, POSTGRESQL_DRIVER)
                .option(DATABASE, database)
                .option(HOST, host)
                .option(PORT, port)
                .option(PASSWORD, password)
                .option(USER, username)
                .build());
    }
}

和application.yml：

  data:
    postgres:
      host: locahost
      port: 5432
      database: postgres
      username: postgres
      password: postgres

但我总是遇到以下异常：

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'orderConverter' defined in file [../converters/OrderConverter.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'fr.misc.database.repos.computed.OrderRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:798)
    at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:228)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1358)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1204)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
    at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:126)
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99)
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
    ... 63 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'ffr.misc.database.repos.computed.OrderRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1695)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1253)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1207)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:885)
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:789)
    ... 81 more

在我的 OrderConverter 构造函数下面：

@Slf4j
@Component
public class OrderConverter {

    private final OrderComputedRepository   orderComputedRepository;

    @Autowired
    public OrderConverter(OrderComputedRepository orderComputedRepository) {
        this.orderComputedRepository = orderComputedRepository;
    }

您知道为什么我的存储库 bean 未绑定吗？

感谢所有和最好的问候

阿德里安

4

1 回答 1

0

错误说：

没有“ffr.misc.database.repos.computed.OrderRepository”类型的合格 bean

看起来包裹的开头有一个额外的“f”。所以我不知道你分享的代码是否准确，但至少它与你的注释不匹配

@EnableR2dbcRepositories("fr.misc.database.repos.computed")

于 2020-12-01T16:45:37.860 回答