springboot啟動時不加載數據庫

項目中引用了mongo驅動

        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-mongodb</artifactId>
            <version>1.9.0.RELEASE</version><!--$NO-MVN-MAN-VER$-->
        </dependency>
        <dependency>
            <groupId>org.mongodb</groupId>
            <artifactId>mongo-java-driver</artifactId>
            <version>3.6.0</version>
        </dependency>

 

啟動時出現報錯信息

com.mongodb.MongoSocketOpenException: Exception opening socket
   at com.mongodb.connection.SocketStream.open(SocketStream.java:62)
   at com.mongodb.connection.InternalStreamConnection.open(InternalStreamConnection.java:126)
   at com.mongodb.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:114)
   at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.ConnectException: Connection refused: connect
   at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
   at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)
   at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
   at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java

原因

spring boot默認會加載
org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration類，
DataSourceAutoConfiguration類使用了@Configuration注解向spring注入了dataSource bean。
因為工程中沒有關於dataSource相關的配置信息，當spring創建dataSource bean因缺少相關的信息就會報錯。
例如：
@SpringBootApplication(exclude={DataSourceAutoConfiguration.class,HibernateJpaAutoConfiguration.class})

解決方法

同理：mongo啟動時 org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration

在Application類上增加：
@EnableAutoConfiguration(exclude{MongoAutoConfiguration.class})

 或啟動類上

@Configuration
@SpringBootApplication(scanBasePackages = "com.test",exclude={MongoAutoConfiguration.class})
public class WebApplication extends SpringBootServletInitializer {

 

完