实现mapper接口注入的两种方式，以及后台的使用区别

1.使用模板方式：

<!--使用模板类实现mybatis -->
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
        <constructor-arg name="executorType" value="BATCH"></constructor-arg>
        <constructor-arg name="exceptionTranslator" ref="myBatisExceptionTranslator"></constructor-arg>
    </bean>

后台的调用：

public bookServiceImpl implements bookService{

   @Autowired
   public SqlSessionTemplate sqlSession;//注入sqlsessionTemplate

   public List<book> getBookInformation(book param){
      logger.info("getBookInformation()"+param.toString());
      bookMapper mapper = sqlSession.getMapper(bookMapper.class);//调用mapper接口
      List<book> bookList=mapper.queryBookInfo(param);
  
      return bookList;
   }
} 

2.使用扫描接口方式：

<!--&lt;!&ndash; 5.配置mybatisDao接口扫描MapperScannerConfigurer &ndash;&gt;-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
       <property name="basePackage" value="com.alice.dao"></property>
    </bean>

后台调用：

public class UserServiceImpl implements IUserService {

    @Autowired
    private UserMapper mapper; //直接注入mapper dao接口的bean

    public List<User> selectAll(String keyword1,String keyword2) {

        return mapper.selectAll(keyword1,keyword2);
    }
}