MongoDB ：
https://my.oschina.net/u/3452433/blog/2999501
多个数据源Mongo连接：
https://juejin.im/post/5cf73090f265da1b7b317887
文档：
https://docs.spring.io/spring-data/mongodb/docs/2.1.3.RELEASE/reference/html/#mapping-usage

SpringBoot 配置多个MongoTemplate

前言：

Spring Boot支持应用程序中创建多个Mongo模板连接到两个不同的mongo服务器。

创建多个Mongo连接

application.properties/yml

properties:
primary.mongodb.host=<primary_mongodb_host>
primary.mongodb.port=<primary_mongodb_port>
primary.mongodb.database=<primary_mongodb_database>


secondary.mongodb.host=<secondary_mongodb_host>
secondary.mongodb.port=<secondary_mongodb_port>
secondary.mongodb.database=<secondary_mongodb_database>

yml:
primary:
    mongodb:
        host:<primary_mongodb_host>
        port:<primary_mongodb_port>
        database:<primary_mongodb_database>

secondary:
    mongodb:
        host:<secondary_mongodb_host>
        port:<primary_mongodb_port>
        database:<secondary_mongodb_database>
复制代码

创建配置类：

public abstract class AbstractMongoConfig { //mongodb配置属性 private String host, database; private int port; //Setter methods go here.. /* * 创建MongoDBFactory的方法 * 两个MongoDB连接共用 */ public MongoDbFactory mongoDbFactory() throws Exception { return new SimpleMongoDbFactory(new MongoClient(host, port), database); } /* * Factory method to create the MongoTemplate */ abstract public MongoTemplate getMongoTemplate() throws Exception; }复制代码

连接配置：

//Master-MongoTemplate
@Configuration  
@ConfigurationProperties(prefix = "primary.mongodb") //前缀指向 public class CommonMongoConfig extends AbstractMongoConfig { /** * MongoTemplate实现 * @Bean为创建的mongotemplate实例提供一个名称（primarymongotemplate） * @Primary 设为默认 */ @Primary @Override public @Bean(name = "primaryMongoTemplate") MongoTemplate getMongoTemplate() throws Exception { return new MongoTemplate(mongoDbFactory()); } }复制代码

// Slave-mongoTempalte
@Configuration 
class @ConfigurationProperties(prefix = "secondary.mongodb") //前缀映射 public class SecondaryMongoConfig extends AbstractMongoConfig { @Override public @Bean(name = "secondaryMongoTemplate") MongoTemplate getMongoTemplate() throws Exception { return new MongoTemplate(mongoDbFactory()); } }复制代码

使用

//Using MongoTemplate for primary database
@Autowired
@Qualifier(value = "primaryMongoTemplate") //primarymongotemplate为默认的mongotemplate protected MongoTemplate mongoTemplate; //Using mongoTemplate for secondary database @Autowired @Qualifier(value = "secondaryMongoTemplate") protected MongoTemplate mongoTemplate;

多个数据源Mongo连接

SpringBoot 配置多个MongoTemplate

前言：

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