springboot配置多数据源(MongoDB主从)

相信看过上一篇文章的小伙伴已经知道了，这章要讲的就是MongoDB主从配置。

在这边文章中，你将要学到的是在项目中配置主从数据库,并且兼容其他数据库哟。。这些都是博主项目中需要并且比较重要的知识哦~

好了，废话不多说，直接进主题。

1.pom依赖

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

2.配置文件的编写

## master mongo
master:
  mongodb:
    host: localhost
    port: 27017
    database: db_ops
## slave1 mongo
slave1:
  mongodb:
    host: localhost
    port: 27017
    database: db_note
## zookeeper注册中心

3.配置文件的编写

在mongodb主从配置中，配置有所不同
1.配置父类AbstractMongoConfigure

public abstract class AbstractMongoConfigure {
    private String host, database;
    private int port;
    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;

    public String getHost() {
        return host;
    }

    public void setHost(String host) {
        this.host = host;
    }

    public String getDatabase() {
        return database;
    }

    public void setDatabase(String database) {
        this.database = database;
    }

    public int getPort() {
        return port;
    }

    public void setPort(int port) {
        this.port = port;
    }
}

2.主数据库配置

@Configuration
@EnableAutoConfiguration(exclude = {MongoAutoConfiguration.class, MongoDataAutoConfiguration.class})
@EnableMongoRepositories(basePackages = {"com.jx.ops.mapper.mongodb.ops"},mongoTemplateRef = "opsMongoTemplate")
@ComponentScan
@ConfigurationProperties(prefix = "ops.mongodb")
public class MongoMasterConfig extends AbstractMongoConfigure {

    @Override
    @Bean(name = "opsMongoTemplate")
    @Primary  //重点哦
    public MongoTemplate getMongoTemplate() throws Exception {
        return new MongoTemplate(mongoDbFactory());
    }
}

3.从数据库配置

@Configuration
@EnableAutoConfiguration(exclude = {MongoAutoConfiguration.class, MongoDataAutoConfiguration.class})
@EnableMongoRepositories(basePackages = {"com.jx.ops.mapper.mongodb.post"},mongoTemplateRef = "postMongoTemplate")
@ComponentScan
@ConfigurationProperties(prefix = "post.mongodb")
public class MongoPostConfig extends AbstractMongoConfigure {
    @Override
    @Bean(name = "postMongoTemplate")
    public MongoTemplate getMongoTemplate() throws Exception {
        return new MongoTemplate(mongoDbFactory());
    }
}

到此，主从数据库也讲解完毕，如果有不懂或出bug的小伙伴可以留言我哟。。

springboot配置多数据源(MongoDB主从)

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