如何覆盖SimpleMongoDbFactory，并仍然嵌入mongodb开始

Question

我试图让一个多租户mongodb应用程序运行，其中每个租户都有自己的数据库。我编写了一个替代SimpleMongoDbFactory，但无论我尝试做什么，只要Java配置去嵌入式mongo数据库不会再启动。

我想知道的是如何配置替换MongoDbFactory并保留其余的弹簧启动autoconfig？或者如果我需要更换所有的配置来做到这一点？

我甚至尝试将MongoDataAutoConfiguration代码复制到我自己的配置类中，并且仍然停止启动嵌入式mongo数据库。

编辑...使问题更具体。

我期待能够做到这样的事情（尽管我会用我自己的MongoDbFactory类），并且仍然会在应用程序启动时自动配置嵌入式数据库。最新版本的spring boot（1.3.5）和依赖关系。

package com.mmt; 

import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.boot.autoconfigure.AutoConfigureAfter; 
import org.springframework.boot.autoconfigure.AutoConfigureBefore; 
import org.springframework.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration; 
import org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration; 
import org.springframework.boot.autoconfigure.mongo.MongoProperties; 
import org.springframework.boot.context.properties.EnableConfigurationProperties; 
import org.springframework.context.annotation.Bean; 
import org.springframework.context.annotation.Configuration; 
import org.springframework.data.mongodb.core.SimpleMongoDbFactory; 

import com.mongodb.MongoClient; 

@Configuration 
@EnableConfigurationProperties(MongoProperties.class) 
@AutoConfigureAfter(MongoAutoConfiguration.class) 
@AutoConfigureBefore(MongoDataAutoConfiguration.class) 
public class MongoConfig { 

    @Autowired 
    private MongoProperties properties; 

    @Autowired 
    private MongoClient mongo; 

    @Bean 
    public SimpleMongoDbFactory mongoDbFactory(MongoClient mongo) throws Exception { 
     String database = this.properties.getMongoClientDatabase(); 
     return new SimpleMongoDbFactory(mongo, database); 
    } 

} 

但我得到这个堆栈跟踪。

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'mongoTemplate' defined in class path resource [org/springframework/boot/autoconfigure/data/mongo/MongoDataAutoConfiguration.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [org.springframework.data.mongodb.MongoDbFactory]: Error creating bean with name 'mongoDbFactory' defined in class path resource [com/mmt/MongoConfig.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [com.mongodb.MongoClient]: No qualifying bean of type [com.mongodb.MongoClient] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.mongodb.MongoClient] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'mongoDbFactory' defined in class path resource [com/mmt/MongoConfig.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [com.mongodb.MongoClient]: No qualifying bean of type [com.mongodb.MongoClient] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.mongodb.MongoClient] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {} 
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:464) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    ... 177 common frames omitted 
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'mongoDbFactory' defined in class path resource [com/mmt/MongoConfig.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [com.mongodb.MongoClient]: No qualifying bean of type [com.mongodb.MongoClient] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.mongodb.MongoClient] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {} 
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:464) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1192) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1116) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:813) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    ... 187 common frames omitted 
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.mongodb.MongoClient] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {} 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:813) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] 
    ... 201 common frames omitted 

Answer 1

此处提供的数据库级示例的多租户可能会有帮助。 github repository example