I want to connect to mongoDB Atlas in a spring boot project, but always Exceptions are thrown. If I use Java without spring boot, everything works fine. The following test project reproduces the errors. The pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>maven-test</groupId>
<artifactId>test</artifactId>
<version>0.0.1-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.1.RELEASE</version>
<relativePath />
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongodb-driver-sync</artifactId>
</dependency>
<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongodb-driver-core</artifactId>
</dependency>
</dependencies>
</project>
The Main-class:
package test;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration;
import org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration;
@SpringBootApplication(exclude = {MongoAutoConfiguration.class, MongoDataAutoConfiguration.class})
public class Main {
public static void main(String[] args) {
SpringApplication.run(Main.class, args);
}
}
And the configuration for mongoDB:
package test;
import com.mongodb.ConnectionString;
import com.mongodb.MongoClientSettings;
import com.mongodb.client.MongoClient;
import com.mongodb.client.MongoClients;
import org.bson.codecs.configuration.CodecRegistry;
import org.bson.codecs.pojo.PojoCodecProvider;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import static org.bson.codecs.configuration.CodecRegistries.fromProviders;
import static org.bson.codecs.configuration.CodecRegistries.fromRegistries;
@Configuration
public class MongoConfig {
@Value("${spring.data.mongodb.uri}")
private String connectionString;
@Bean
public MongoClient mongoClient() {
System.out.println(this.connectionString);
CodecRegistry pojoCodecRegistry = fromProviders(PojoCodecProvider.builder().automatic(true).build());
CodecRegistry codecRegistry = fromRegistries(MongoClientSettings.getDefaultCodecRegistry(), pojoCodecRegistry);
return MongoClients.create(MongoClientSettings.builder()
.applyConnectionString(new ConnectionString(connectionString))
.codecRegistry(codecRegistry)
.build());
}
}
The uri for mongoDB is stored in application.properties. If I start the server, the following exeception is thrown:
com.mongodb.MongoSocketWriteException: Exception sending message at com.mongodb.internal.connection.InternalStreamConnection.translateWriteException(InternalStreamConnection.java:550) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnection.sendMessage(InternalStreamConnection.java:432) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnection.sendCommandMessage(InternalStreamConnection.java:272) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnection.sendAndReceive(InternalStreamConnection.java:256) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.CommandHelper.sendAndReceive(CommandHelper.java:83) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.CommandHelper.executeCommand(CommandHelper.java:33) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnectionInitializer.initializeConnectionDescription(InternalStreamConnectionInitializer.java:103) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnectionInitializer.initialize(InternalStreamConnectionInitializer.java:60) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:128) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:117) ~[mongodb-driver-core-4.0.4.jar:na] at java.lang.Thread.run(Thread.java:745) [na:1.8.0_41]
Caused by: javax.net.ssl.SSLException: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
So I have tried to disable ssl through adding to the uri: &ssl=false
However, then another exception is thrown:
com.mongodb.MongoSocketReadException: Prematurely reached end of stream at com.mongodb.internal.connection.SocketStream.read(SocketStream.java:112) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnection.receiveResponseBuffers(InternalStreamConnection.java:579) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnection.receiveMessage(InternalStreamConnection.java:444) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnection.receiveCommandMessageResponse(InternalStreamConnection.java:298) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnection.sendAndReceive(InternalStreamConnection.java:258) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.CommandHelper.sendAndReceive(CommandHelper.java:83) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.CommandHelper.executeCommand(CommandHelper.java:33) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnectionInitializer.initializeConnectionDescription(InternalStreamConnectionInitializer.java:103) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnectionInitializer.initialize(InternalStreamConnectionInitializer.java:60) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:128) ~[mongodb-driver-core-4.0.4.jar:na] at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:117) ~[mongodb-driver-core-4.0.4.jar:na] at java.lang.Thread.run(Thread.java:745) [na:1.8.0_41]
I have found unfortunately no solution to solve them. Has someone encountered the same problem or knows a solution? Thank you
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Answer
For everyone having the same problem: the cause was, that there were different versions in the maven repo. So mvn clean and mvn install solved the problem.