时间：2020-10-15 23:16:00 | 栏目：JAVA代码 | 点击：次
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
<span style="white-space:pre"> </span><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 //<span style="color:#ff0000;">重点哦</span>
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。。