使用MapperFactoryBean时如何获取当前会话?

时间:2016-06-28 16:32:38

标签: java spring session mybatis ibatis

免责声明:我仍然非常 MyBatis&春天请原谅我,如果下面缺少一些细节。

我有一些代码在MyBatis中使用MapperFactoryBean来自动管理数据库事务,而不必在我的Java代码中创建DAO类。这也意味着当使用这种方法时,用户不需要编写任何会话特定代码,因为MyBatis直接处理与数据库本身通信的会话。

问题:所以当上述情况发生时,如果有人希望得到当前的会话,那你怎么做?在Hibernate中,您可以getSessionFactory().getCurrentSession()来获取当前会话。当使用MyBatis的MapperFactoryBean方法与数据库进行通信时,MyBatis的等效命令是什么?

以下是我当前代码的片段:

beans.xml中:

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="com.countries.dataaccess" />
</bean>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
     <property name="dataSource" ref="dataSource" />    
</bean>

<bean id="countriesMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
 <property name="mapperInterface" value="com.countries.dataaccess.CountryMapper" />
     <property name="sqlSessionFactory" ref="sqlSessionFactory" />         
</bean>

<bean id="countriesFacade" class="com.countries.facade.CountriesFacade" />

com.countries.dataaccess.CountryMapper:

public interface CountryMapper {

    public List<CountryOutlineDTO> getAllCountries(List<String> merchantType);

    public CountryDetailsDTO getCountryInfo(String countryCode);

  //etc ....
}

com.countries.delegate.CountriesServiceDelegate:

public interface CountriesServiceDelegate {

    public CountryDetails getCountryDetails(String countryCode, String locale) throws Exception;

    public List<CountryDetails> getAllCountryDetails(List<String> merchantTypeList, boolean verbose) throws Exception;

    public Health getDBHealth();
}

com.countries.delegate.impl.CountriesServiceDelegateImpl:

public class CountriesServiceDelegateImpl implements CountriesServiceDelegate {

    @Autowired
    private CountriesFacade countriesFacade;

    @Override
    public CountryDetails getCountryDetails(String countryCode, String locale) {

    //Implementation logic here ...

    }

    @Override
    public List<CountryDetails> getAllCountryDetails(List<String> merchantTypeList, boolean verbose) {

    //Implementation logic here ...

    }
}

com.countries.facade:

public class CountriesFacade {

    @Autowired
    @Qualifier("countriesMapper")
    private CountryMapper countriesMapper;

    public CountryDetails getCountryInfo(String countryCode, String locale) {

    //Implementation logic here such as xyz = countriesMapper.getCountryInfo(countryCode);

    }

    public List<CountryDetails> getAllCountries(List<String> merchantType, boolean verbose) {

    //Implementation logic here such as xyz = countriesMapper.getCountryInfo(countryCode);

    }
}

1 个答案:

答案 0 :(得分:0)

您可以使用http://www.mybatis.org/spring/sqlsession.html

记录的SqlSessionTemplate

它将确保您获得与您正在使用的映射器相同的sqlsession。

如果对您的用例更有效,您也可以使用同一页面上记录的SqlSessionDaoSupport