Java Spring引导检测位于另一个maven模块中的mongodb连接错误（MongoSocketOpenException）

我有一个java项目，名为“lydsam”。
第一个模块称为：“bd”，它是我与数据库的连接

@Configuration
public class ConnectionBD {

    @Bean
    public MongoDatabaseFactory mongoDatabaseFactory(){
        return new SimpleMongoClientDatabaseFactory("mongodb://localhost:27017/lydsam");
    }

    @Bean
    public MongoTemplate mongoTemplate() {
        try{
            return new MongoTemplate(mongoDatabaseFactory());
        }catch(Exception e){
            System.out.println("offline with mongodb");
            System.out.println(e.getMessage());
            return null;
        }
    }
}

我还有另一个模块叫：“销售”

运行应用程序时一切正常，我希望在断开数据库连接时捕获错误，然后在控制台上显示一条消息。
我尝试使用“try catch”，但它对我无效，我得到了以下错误

com.mongodb.MongoSocketOpenException: Exception opening socket
at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:70) ~[mongodb-driver-core-4.0.3.jar:na]
at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:127) ~[mongodb-driver-core-4.0.3.jar:na]
at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:117) ~[mongodb-driver-core-4.0.3.jar:na]
at java.base/java.lang.Thread.run(Thread.java:830) ~[na:na]
Caused by: java.net.ConnectException: Connection refused: no further information
at java.base/sun.nio.ch.Net.pollConnect(Native Method) ~[na:na]
at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:579) ~[na:na]
at java.base/sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:549) ~[na:na]
at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:597) ~[na:na]
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:339) ~[na:na]
at java.base/java.net.Socket.connect(Socket.java:603) ~[na:na]
at com.mongodb.internal.connection.SocketStreamHelper.initialize(SocketStreamHelper.java:63) ~[mongodb-driver-core-4.0.3.jar:na]
at com.mongodb.internal.connection.SocketStream.initializeSocket(SocketStream.java:79) ~[mongodb-driver-core-4.0.3.jar:na]
at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:65) ~[mongodb-driver-core-4.0.3.jar:na]
... 3 common frames omitted  

---

请告诉我需要帮助。

用try-catch for MongoTimeoutException包装您的代码。您可以在my other

中找到更多详细信息。您的目标是在数据库关闭时关闭应用程序。对吗？@DineshDontha是的，对，但我想在控制台上显示一条消息，表明我的数据库处于脱机状态。我试图进行一些分析。通常情况下，MongoDB实时提供高可用性，多个实例之间进行负载平衡。因此，我没有发现如何捕获/处理运行时发生的此类SocketException。到目前为止，我认为这不会得到处理。应该有人来帮忙。

com.mongodb.MongoSocketOpenException: Exception opening socket
at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:70) ~[mongodb-driver-core-4.0.3.jar:na]
at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:127) ~[mongodb-driver-core-4.0.3.jar:na]
at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:117) ~[mongodb-driver-core-4.0.3.jar:na]
at java.base/java.lang.Thread.run(Thread.java:830) ~[na:na]
Caused by: java.net.ConnectException: Connection refused: no further information
at java.base/sun.nio.ch.Net.pollConnect(Native Method) ~[na:na]
at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:579) ~[na:na]
at java.base/sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:549) ~[na:na]
at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:597) ~[na:na]
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:339) ~[na:na]
at java.base/java.net.Socket.connect(Socket.java:603) ~[na:na]
at com.mongodb.internal.connection.SocketStreamHelper.initialize(SocketStreamHelper.java:63) ~[mongodb-driver-core-4.0.3.jar:na]
at com.mongodb.internal.connection.SocketStream.initializeSocket(SocketStream.java:79) ~[mongodb-driver-core-4.0.3.jar:na]
at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:65) ~[mongodb-driver-core-4.0.3.jar:na]
... 3 common frames omitted