Spring Boot - MongoDB - MongoLab配置

Question

我試圖配置我的Spring Boot後端連接到MongoLab上承載的MongoDB。

問題是它試圖連接到本地主機。我得到的錯誤是：

2017-06-12 17:34:05.046 INFO 11843 --- [127.0.0.1:27017] 
org.mongodb.driver.cluster    : Exception in monitor thread while connecting to server 127.0.0.1:27017 
com.mongodb.MongoSocketOpenException: Exception opening socket 
     at com.mongodb.connection.SocketStream.open(SocketStream.java:63) ~[mongodb-driver-core-3.4.2.jar:na] 
     at com.mongodb.connection.InternalStreamConnection.open(InternalStreamConnection.java:115) ~[mongodb-driver-core-3.4.2.jar:na] 
     at com.mongodb.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:113) ~[mongodb-driver-core-3.4.2.jar:na] 
     at java.lang.Thread.run(Thread.java:745) [na:1.8.0_25] 
Caused by: java.net.ConnectException: Connection refused 
     at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_25] 
     at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345) ~[na:1.8.0_25] 
     at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_25] 
     at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_25] 
     at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_25] 
     at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_25] 
     at com.mongodb.connection.SocketStreamHelper.initialize(SocketStreamHelper.java:57) ~[mongodb-driver-core-3.4.2.jar:na] 
     at com.mongodb.connection.SocketStream.open(SocketStream.java:58) ~[mongodb-driver-core-3.4.2.jar:na] 
     ... 3 common frames omitted 

我試過排除MongoAutoConfiguration.class，但我得到了同樣的錯誤。

我的代碼：

FoodappBackendApplication.java：

@SpringBootApplication 
@EnableAutoConfiguration(exclude={MongoAutoConfiguration.class}) 
//@SpringBootApplication(exclude = {MongoAutoConfiguration.class, MongoDataAutoConfiguration.class}) 
public class FoodappBackendApplication { 

    public static void main(String[] args) { 
     SpringApplication.run(FoodappBackendApplication.class, args); 
    } 
} 

application.properties：

server.port=8181 
spring.data.mongodb.host=mongoserver 
spring.data.mongodb.database=foodapp 
spring.data.mongodb.uri=mongodb://<myusername>:<mypassword>@ds123456.mlab.com:12345/foodapp 
spring.data.mongodb.authentication-database: admin 

SpringMongoConfig.java：

個

@Configuration 
public class SpringMongoConfig extends AbstractMongoConfiguration { 

    @Override 
    public String getDatabaseName() { 
     return "foodapp"; 
    } 

    @Override 
    @Bean 
    public Mongo mongo() throws Exception { 
     return new MongoClient(); 
    } 
} 

pom.xml的依賴關係：

<dependencies> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-data-mongodb</artifactId> 
     </dependency> 
     <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> 
     </dependency> 

     <dependency> 
      <groupId>org.mongodb</groupId> 
      <artifactId>mongodb-driver</artifactId> 
      <version>3.4.2</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework.data</groupId> 
      <artifactId>spring-data-mongodb</artifactId> 
      <version>1.10.4.RELEASE</version> 
     </dependency> 
    </dependencies> 

任何幫助是非常感謝！

Answer 1

從SpringMongoConfig取出@Bean mongo()爲此事刪除類都在一起，你已經提供的application.properties所有必要的配置文件。

更新您的FoodappBackendApplication到

@SpringBootApplication 
public class FoodappBackendApplication { 

    public static void main(String[] args) { 
     SpringApplication.run(FoodappBackendApplication.class, args); 
    } 
} 

對於基於Java的配置，你可以看看這個。

Spring Boot does not read MongoDB configuration from Java class

Answer 2

夫婦的問題，我可以看到：

1. 是您打算用.yml或的.properties？假設你想使用.yml，你應該將你的屬性文件重命名爲application.yml
2. 你的YML縮進是錯誤的。你的文件應該是這樣的： spring: data: mongodb: uri: # note the indentation level of this key 這春天然後轉換成一個屬性spring.data.mongodb.uri