Spring Boot连接MongoDB Atlas集群启动时抛出数据库名称不能为空异常

错误栈信息 #

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoDatabaseFactory' defined in class path resource [org/springframework/boot/autoconfigure/data/mongo/MongoDatabaseFactoryConfiguration.class]: Failed to instantiate [org.springframework.data.mongodb.core.MongoDatabaseFactorySupport]: Factory method 'mongoDatabaseFactory' threw exception with message: Database name must not be empty
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:659) ~[spring-beans-6.0.9.jar:6.0.9]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:647) ~[spring-beans-6.0.9.jar:6.0.9]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1332) ~[spring-beans-6.0.9.jar:6.0.9]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1162) ~[spring-beans-6.0.9.jar:6.0.9]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:560) ~[spring-beans-6.0.9.jar:6.0.9]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520) ~[spring-beans-6.0.9.jar:6.0.9]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.9.jar:6.0.9]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.9.jar:6.0.9]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.9.jar:6.0.9]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.9.jar:6.0.9]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:973) ~[spring-beans-6.0.9.jar:6.0.9]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:941) ~[spring-context-6.0.9.jar:6.0.9]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:608) ~[spring-context-6.0.9.jar:6.0.9]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.1.0.jar:3.1.0]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:733) ~[spring-boot-3.1.0.jar:3.1.0]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:435) ~[spring-boot-3.1.0.jar:3.1.0]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:311) ~[spring-boot-3.1.0.jar:3.1.0]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1305) ~[spring-boot-3.1.0.jar:3.1.0]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1294) ~[spring-boot-3.1.0.jar:3.1.0]
    at com.sandeepprabhakula.blog.BlogApplication.main(BlogApplication.java:10) ~[classes/:na]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoDatabaseFactorySupport]: Factory method 'mongoDatabaseFactory' threw exception with message: Database name must not be empty
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:171) ~[spring-beans-6.0.9.jar:6.0.9]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:655) ~[spring-beans-6.0.9.jar:6.0.9]
    ... 19 common frames omitted
Caused by: java.lang.IllegalArgumentException: Database name must not be empty
    at org.springframework.util.Assert.hasText(Assert.java:294) ~[spring-core-6.0.9.jar:6.0.9]
    at org.springframework.data.mongodb.core.MongoDatabaseFactorySupport.<init>(MongoDatabaseFactorySupport.java:68) ~[spring-data-mongodb-4.1.0.jar:4.1.0]
    at org.springframework.data.mongodb.core.SimpleMongoClientDatabaseFactory.<init>(SimpleMongoClientDatabaseFactory.java:75) ~[spring-data-mongodb-4.1.0.jar:4.1.0]
    at org.springframework.data.mongodb.core.SimpleMongoClientDatabaseFactory.<init>(SimpleMongoClientDatabaseFactory.java:64) ~[spring-data-mongodb-4.1.0.jar:4.1.0]
    at org.springframework.boot.autoconfigure.data.mongo.MongoDatabaseFactoryConfiguration.mongoDatabaseFactory(MongoDatabaseFactoryConfiguration.java:47) ~[spring-boot-autoconfigure-3.1.0.jar:3.1.0]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:139) ~[spring-beans-6.0.9.jar:6.0.9]
    ... 20 common frames omitted


Process finished with exit code 1

当前application.properties配置 #

spring.data.mongodb.uri=mongodb+srv://sandeepsandyo9o7o1:my_password@cluster0.fjfmmcp.mongodb.net/?retryWrites=true&w=majority
    
spring.data.mongodb.database=blog

问题原因 #

同时配置spring.data.mongodb.uri和spring.data.mongodb.database时，Spring Boot会优先读取URI中的数据库配置。你的URI末尾是/?retryWrites=true...，/后面未指定数据库名，导致数据库名为空，单独配置的database参数未生效。

解决方法 #

两种方案任选其一：

• 方案一：在URI中直接指定数据库名
  修改URI末尾添加/blog，可保留或删除单独的database配置（URI设置优先生效）：

spring.data.mongodb.uri=mongodb+srv://sandeepsandyo9o7o1:my_password@cluster0.fjfmmcp.mongodb.net/blog?retryWrites=true&w=majority
spring.data.mongodb.database=blog

• 方案二：保留单独的database配置，调整URI格式
  移除URI末尾的/，让Spring Boot读取spring.data.mongodb.database的配置：

spring.data.mongodb.uri=mongodb+srv://sandeepsandyo9o7o1:my_password@cluster0.fjfmmcp.mongodb.net?retryWrites=true&w=majority
spring.data.mongodb.database=blog

内容的提问来源于stack exchange，提问作者user14508072