springboot-mongodb 多数据源

1. AbstractMongoConfig.java 

public abstract class AbstractMongoConfig {
	// Mongo DB Properties
	private String host, database, username, password;
	private int port;
	// Setter methods go here.
;

/*
	 * Method that creates MongoDbFactory Common to both of the MongoDb
	 * connections
	 */
	public MongoDbFactory mongoDbFactory() throws Exception {
		ServerAddress serverAddress = new ServerAddress(host, port);
		List<MongoCredential> mongoCredentialList = new ArrayList<>();
		mongoCredentialList.add(MongoCredential.createCredential(username, database, password.toCharArray()));
		return new SimpleMongoDbFactory(new MongoClient(serverAddress, mongoCredentialList), database);
	}

	/*
	 * Factory method to create the MongoTemplate
	 */
	abstract public MongoTemplate getMongoTemplate() throws Exception;
}

或者

public abstract class AbstractMongoConfig {
	
private String url;
/*
	 * Method that creates MongoDbFactory Common to both of the MongoDb
	 * connections
	 */
	public MongoDbFactory mongoDbFactory() throws Exception {
		
		return new SimpleMongoDbFactory(new MongoClientURI(url);
	}

	/*
	 * Factory method to create the MongoTemplate
	 */
	abstract public MongoTemplate getMongoTemplate() throws Exception;
}

2. first mongodb 配置

@Configuration  //Configuration class
@ConfigurationProperties(prefix = "spring.data.mongodb.primary") //Defines my custom prefix and points to the primary db properties
public class PrimaryMongoConfig extends AbstractMongoConfig {     
   
     @Primary    
     @Override    
     @Bean(name = "primaryMongoTemplate")
     public  MongoTemplate getMongoTemplate() throws Exception {        
         return new MongoTemplate(mongoDbFactory());    
     }
}

second mongo配置

@Configuration  //Configuration 
@ConfigurationProperties(prefix = "spring.data.mongodb.secondary")  //Defines my custom prefix and points to the secondary db properties
public class SecondaryMongoConfig extends  AbstractMongoConfig{     
   
    @Override public @Bean(name = "secondaryMongoTemplate") 
    MongoTemplate getMongoTemplate() throws Exception {        
        return new MongoTemplate(mongoDbFactory());    
    }
}

3. Controller 中使用

@Autowired
	@Qualifier(value = "primaryMongoTemplate")
	protected MongoTemplate primaryMongoTemplate;

	// Using mongoTemplate for secondary database
	@Autowired
	@Qualifier(value = "secondaryMongoTemplate")
	protected MongoTemplate secondaryMongoTemplate;

4. Application 中注意

@SpringBootApplication(exclude = MongoAutoConfiguration.class，MongoDataAutoConfiguration.class)

如果不添加，就会报错：

com.mongodb.MongoSocketOpenException: Exception opening socket

5. 配置文件：

 

spring.data.mongodb.secondary.url=标准的写法就可以

或者

spring.data.mongodb.secondary.username=  

分开写，匹配步骤1中的两种方式