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);
     }
 }