这篇文章主要介绍了Spring-boot集成pg、mongo多数据源过程详解,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下
修改POM文件，增加相应Jar包
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-mongodb</artifactId></dependency><dependency><groupId>org.postgresql</groupId><artifactId>postgresql</artifactId><scope>runtime</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jdbc</artifactId></dependency>
修改启动类，去除原有的数据源自动加载机制
@SpringBootApplication( exclude = {DataSourceAutoConfiguration.class, PageHelperAutoConfiguration.class , MongoAutoConfiguration.class, MongoDataAutoConfiguration.class//禁用数据源自动配置 })@EnableEurekaClientpublic class MainApplication {、、、
编写application.yml文件，增加配置信息
spring: # 默认的postgreSQL库 datasource: pg: url: jdbc:postgresql://127.0.0.1:5432/pgdb username: us_wu password: netcool@919 driver-class-name: org.postgresql.Driver mg: host: 127.0.0.1 username: aaa password: aaa database: mgdb port: 27017
分别手动增加PG、mongo的数据源以及使用样例
pg
1、手动加载数据源
@Configurationpublic class DataSourceConfig { final String cmspg="spring.datasource.pg"; @Bean(name = "pgDS") @ConfigurationProperties(prefix =pg) public DataSource dataSource() { return DataSourceBuilder.create().build(); }
2、创建pg配置文件，指定SqlSessionFactory以及要扫描的Dao
@Configuration@MapperScan(basePackages = {"com.**.mapper.pg"}, sqlSessionFactoryRef = "sqlSessionFactory")public class PostgresDBConfig { @Autowired @Qualifier("pgDS") private DataSource pgDS; @Bean public SqlSessionFactory sqlSessionFactory() throws Exception { SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean(); factoryBean.setDataSource(pgDS); return factoryBean.getObject(); } @Bean public SqlSessionTemplate sqlSessionTemplate() throws Exception { SqlSessionTemplate template = new SqlSessionTemplate(sqlSessionFactory()); // 使用上面配置的Factory return template; }}
3、编写Dao--注解形式
@Repository@Mapperpublic interface StCableFiberMapper { @Select("SELECT * FROM st_cable_fiber WHERE id = #{id}") St_cable_fiber findById(@Param("id") String id);
mongo
1、加载mongo配置信息
public abstract class AbstractMongoConfigure {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.createScramSha1Credential(username, database, password.toCharArray()));return new SimpleMongoDbFactory(new MongoClient(serverAddress,mongoCredentialList), database);} /* * Factory method to create the MongoTemplate */abstract public MongoTemplate getMongoTemplate() throws Exception;}@Configuration@EnableMongoRepositories(basePackages = {"com.**.mapper.mg"},mongoTemplateRef = "mongoTemplate") @ComponentScan@ConfigurationProperties(prefix = "spring.datasource.mg")public class MongoMasterConfig extends AbstractMongoConfigure{@Override@Bean("mongoTemplate")public MongoTemplate getMongoTemplate() throws Exception {return new MongoTemplate(mongoDbFactory()); }}
编写Dao MongoTemplate模式
@Repositorypublic class CmCableDetailRepo{@Autowiredprivate MongoTemplate mongoTemplate;public Page<Cm_Cable> findByLevelAndName(String areacode, int level,String name,int pageNum, int pageSize){PageRequest page = new PageRequest(pageNum, pageSize);Query query = new Query();Criteria criteria = new Criteria();criteria.and("areacode").regex("^"+areacode);if(level > -1){criteria.and("cableSegment_level").is(level);}if(null != name && name.trim().length() > 0){criteria.and("zh_label").regex(".*?"+name+".*");}query.addCriteria(criteria);Long count = mongoTemplate.count(query, Cm_Cable.class);List<Cm_Cable> list = mongoTemplate.find(query.with(page), Cm_Cable.class);return new PageImpl<Cm_Cable>(list, page, count);}
MongoRepository模式
@Repositorypublic interface CmCableDetailMapper extends MongoRepository<Cm_Cable, String>{}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。
本文标题: Spring-boot集成pg、mongo多数据源过程详解
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