即使运行一项测试也需要超过1分钟的时间：
我不明白这种行为的原因是什么？
从控制台中摘录了以下内容：
2018-12-13 13:14:43.214 INFO 12277 --- [ main] c.j.s.embedmongo.EmbeddedMongoBuilder : Initializing embedded MongoDB instance
2018-12-13 13:14:43.293 INFO 12277 --- [ main] d.f.embed.process.store.Downloader : Extract /Users/nazar/.embedmongo/osx/mongodb-osx-ssl-x86_64-3.6.5.tgz : starting...
2018-12-13 13:14:44.287 INFO 12277 --- [ main] d.f.embed.process.store.Downloader : Extract /Users/nazar/.embedmongo/osx/mongodb-osx-ssl-x86_64-3.6.5.tgz : extract mongodb-osx-x86_64-3.6.5/bin/mongod
2018-12-13 13:14:44.288 INFO 12277 --- [ main] d.f.embed.process.store.Downloader : Extract /Users/nazar/.embedmongo/osx/mongodb-osx-ssl-x86_64-3.6.5.tgz : nothing left
2018-12-13 13:14:44.288 INFO 12277 --- [ main] d.f.embed.process.store.Downloader : Extract /Users/nazar/.embedmongo/osx/mongodb-osx-ssl-x86_64-3.6.5.tgz : finished
2018-12-13 13:14:44.289 INFO 12277 --- [ main] c.j.s.embedmongo.EmbeddedMongoBuilder : Starting embedded MongoDB instance
2018-12-13 13:14:45.467 INFO 12277 --- [ main] d.f.embed.mongo.MongodExecutable : start de.flapdoodle.embed.mongo.config.MongodConfigBuilder$ImmutableMongodConfig@55fee662
2018-12-13 13:14:45.871 INFO 12277 --- [ main] org.mongodb.driver.cluster : Cluster created with settings {hosts=[localhost:50770], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
2018-12-13 13:14:45.985 INFO 12277 --- [localhost:50770] org.mongodb.driver.connection : Opened connection [connectionId{localValue:1, serverValue:1}] to localhost:50770
2018-12-13 13:14:45.990 INFO 12277 --- [localhost:50770] org.mongodb.driver.cluster : Monitor thread successfully connected to server with description ServerDescription{address=localhost:50770, type=STANDALONE, state=CONNECTED, ok=true, version=ServerVersion{versionList=[3, 6, 5]}, minWireVersion=0, maxWireVersion=6, maxDocumentSize=16777216, logicalSessionTimeoutMinutes=30, roundTripTimeNanos=4065087}
2018-12-13 13:14:46.627 WARN 12277 --- [ main] c.t.p.p.configuration.BugsnagConfig : Bugsnag apikey not set, not using it
2018-12-13 13:14:46.702 INFO 12277 --- [ main] c.t.p.p.c.AsyncConfigurationTest : Creating sync task executor for tests
2018-12-13 13:15:38.019 INFO 12277 --- [ Thread-7] o.s.b.a.mongo.embedded.EmbeddedMongo : note: noprealloc may hurt performance in many applications
2018-12-13 13:15:38.057 INFO 12277 --- [ Thread-7] o.s.b.a.mongo.embedded.EmbeddedMongo : 2018-12-13T13:15:38.056+0200 I CONTROL [initandlisten] MongoDB starting : pid=12460 port=50789 dbpath=/var/folders/95/6cdccp1s629gtfwm5tjb63gr0000gp/T/embedmongo-db-8535bf9e-fdc6-44f3-88c8-4bc77dd60bb3 64-bit host=sdos-MacBook-Pro.local
2018-12-13 13:15:38.057 INFO 12277 --- [ Thread-7] o.s.b.a.mongo.embedded.EmbeddedMongo : 2018-12-13T13:15:38.057+0200 I CONTROL [initandlisten] db version v3.5.5
2018-12-13 13:15:38.058 INFO 12277 --- [ Thread-7] o.s.b.a.mongo.embedded.EmbeddedMongo : 2018-12-13T13:15:38.057+0200 I CONTROL [initandlisten] git version: 98515c812b6fa893613f063dae568ff8319cbfbd
2018-12-13 13:15:38.058 INFO 12277 --- [ Thread-7] o.s.b.a.mongo.embedded.EmbeddedMongo : 2018-12-13T13:15:38.057+0200 I CONTROL [initandlisten] allocator: system
2018-12-13 13:15:38.058 INFO 12277 --- [ Thread-7] o.s.b.a.mongo.embedded.EmbeddedMongo : 2018-12-13T13:15:38.057+0200 I CONTROL [initandlisten] modules: none
2018-12-13 13:15:38.058 INFO 12277 --- [ Thread-7] o.s.b.a.mongo.embedded.EmbeddedMongo : 2018-12-13T13:15:38.057+0200 I CONTROL [initandlisten] build environment:
2018-12-13 13:15:38.058 INFO 12277 --- [ Thread-7] o.s.b.a.mongo.embedded.EmbeddedMongo : 2018-12-13T13:15:38.057+0200 I CONTROL [initandlisten] distarch: x86_64
2018-12-13 13:15:38.058 INFO 12277 --- [ Thread-7] o.s.b.a.mongo.embedded.EmbeddedMongo : 2018-12-13T13:15:38.057+0200 I CONTROL [initandlisten] target_arch: x86_64
2018-12-13 13:15:38.058 INFO 12277 --- [ Thread-7] o.s.b.a.mongo.embedded.EmbeddedMongo : 2018-12-13T13:15:38.057+0200 I CONTROL [initandlisten] options: { net: { bindIp: "127.0.0.1", http: { enabled: false }, port: 50789 }, security: { authorization: "disabled" }, storage: { dbPath: "/var/folders/95/6cdccp1s629gtfwm5tjb63gr0000gp/T/embedmongo-db-8535bf9e-fdc6-44f3-88c8-4bc77dd60bb3", journal: { enabled: false }, mmapv1: { preallocDataFiles: false, smallFiles: true }, syncPeriodSecs: 0.0 } }
这里是：full console log
行后最粘：
c.t.p.p.c.AsyncConfigurationTest：创建用于测试的同步任务执行器
这是pom文件的摘录：
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>de.flapdoodle.embed</groupId>
<artifactId>de.flapdoodle.embed.mongo</artifactId>
<version>2.1.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>cz.jirutka.spring</groupId>
<artifactId>embedmongo-spring</artifactId>
<version>1.3.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
没有其他插件，只有spring-boot-maven-plugin。
另外，application.yml上没有用于测试的其他配置。
接下来是Mongo配置：
@Configuration
public class MongoConfig {
private static final String MONGO_DB_URL = "localhost";
private static final String MONGO_DB_NAME = "embeded_db";
@Bean
public MongoTemplate mongoTemplate() throws IOException {
EmbeddedMongoFactoryBean mongo = new EmbeddedMongoFactoryBean();
mongo.setBindIp(MONGO_DB_URL);
MongoClient mongoClient = mongo.getObject();
return new MongoTemplate(mongoClient, MONGO_DB_NAME);
}
}
任务执行器配置：
@Slf4j
@Configuration
@Profile("test")
public class AsyncConfigurationTest {
@Bean
@Primary
public TaskExecutor taskExecutor() {
log.info("Creating sync task executor for tests");
return new SyncTaskExecutor();
}
}
下一步测试：
@Slf4j
@SpringBootTest
@ActiveProfiles("test")
@RunWith(SpringRunner.class)
public class ServiceTest extends BaseDataServiceTest {
@Value("classpath:enter/enter_file.pdf")
private Resource enterPdf;
@Value("classpath:enter/expected.json")
private Resource enterExpectedJson;
@Test
public void testEnterDemoDocument() {
testHelper(enterPdf, enterExpectedJson);
}
一切正常。但是，目前速度非常慢。
如何调查瓶颈是什么？
启动缓慢的原因是什么？
答案 0 :(得分：2)
Spring Boot对embedded MongoDB具有开箱即用的支持。此外，embedmongo-spring似乎已经过时，因为三年来没有碰过它。
对嵌入式MongoDB使用开箱即用的支持，而不是尝试在它周围包装其他东西。
注意：：您还可以从flappoodle依赖项中删除<version>，因为Spring Boot也具有依赖项管理功能。
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>de.flapdoodle.embed</groupId>
<artifactId>de.flapdoodle.embed.mongo</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
这些依赖项应该是您所需要的。
答案 1 :(得分：0)
我遇到了完全相同的问题，但是我没有使用Spring Boot。我发现我的问题是此行（嵌入式mongo使用该行）：
InetAddress ret = InetAddress.getLocalHost();
这就是解决方法 InetAddress.getLocalHost() slow to run (30+ seconds)