我已经从 SPRING INITIALIZR 创建了一个具有Web，MongoDB和JPA依赖关系的基本Spring Boot应用程序。
当我尝试运行spring boot应用程序时，出现以下异常：
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2018-03-25 16:27:02.807 ERROR 16256 --- [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter : *************************** APPLICATION FAILED TO START *************************** Description: Failed to auto-configure a DataSource: 'spring.datasource.url' is not specified and no embedded datasource could be auto-configured. Reason: Failed to determine a suitable driver class Action: Consider the following situation: If you want an embedded database like H2, HSQL or Derby, please add it in the Classpath. If you have database settings to be loaded from a particular profile you may need to activate it since no profiles were currently active.
在application.properties文件中，我具有以下配置：
server.port=8081 spring.data.mongodb.database=TestDatabase spring.data.mongodb.host=localhost spring.data.mongodb.port=27017
我使用的版本： Spring：5.0.4，MongoDB：3.6，Spring Boot：2.0
由于您已在pom.xml文件中添加了mongodb和data-jpa依赖项，因此它会产生如下所示的依赖项冲突
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-mongodb</artifactId> </dependency>
尝试删除jpa依赖项并运行。它应该工作正常。
