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;