Junit测试失败的嵌入式mongodb与spring启动

Question

我已经添加了这段代码来配置嵌入式mongodb (de.flapdoodle.embed. mongodb:2.2.0)与spring启动2.7.10:

@Configuration
public class TestMongoConfig {
private MongodExecutable mongodExecutable;
private MongoClient mongoClient;
@Value("${mongo.db.host:localhost}")
private String mongoHost;
@Value("${mongo.db.port:27017}")
private int mongoPort;
@Value("${mongo.db.database:test}")
private String mongoDatabase;
@PostConstruct
public void setup() throws Exception {
MongodStarter starter = MongodStarter.getDefaultInstance();
IMongodConfig mongodConfig = new MongodConfigBuilder()
.version(Version.Main.V3_2)
.net(new Net(mongoHost, mongoPort, Network.localhostIsIPv6()))
.build();
mongodExecutable = starter.prepare(mongodConfig);
mongodExecutable.start();
String connectionString = "mongodb://" + mongoHost + ":" + mongoPort;
mongoClient = MongoClients.create(connectionString);
}
@PreDestroy
public void cleanup() {
mongodExecutable.stop();
mongoClient.close();
}
@Bean
public MongoTemplate mongoTemplate() {
return new MongoTemplate(mongoClient, mongoDatabase);
}
}

我像这样把它添加到我的测试类中:

@Autowired
private MongoTemplate mongoTemplate;

几个测试失败了这个错误:

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testMongoConfig': Invocation of init method failed; nested exception is java.io.IOException: Could not start process: failed errno:10048 Only one usage of each socket address (protocol/network address/port) is normally permitted. for socket: 127.0.0.1:27017
2023-04-04T10:11:42.087+0530 E STORAGE  [initandlisten] Failed to set up sockets during startup.

Answer 1

我通过在setup()方法中添加以下代码来解决这个问题。这将自动分配可用端口。

MongodStarter starter = MongodStarter.getDefaultInstance();
ServerSocket socket = new ServerSocket(0); // create a socket with a random port
mongoPort = socket.getLocalPort(); // get the port number
socket.close(); // close the socket