org.apache.ibatis.binding.BindingException: Type interface dxm.com.mapper.UserMapper is not known to

Exception in thread "main" org.apache.ibatis.binding.BindingException: Type interface dxm.com.mapper.UserMapper is not known to the MapperRegistry.
at org.apache.ibatis.binding.MapperRegistry.getMapper(MapperRegistry.java:47)
at org.apache.ibatis.session.Configuration.getMapper(Configuration.java:655)
at org.apache.ibatis.session.defaults.DefaultSqlSession.getMapper(DefaultSqlSession.java:222)
at dxm.com.web.UsersCRUD.testDelete(UsersCRUD.java:33)

at dxm.com.web.UsersCRUD.main(UsersCRUD.java:23)

mapper中将接口类配置， 同时将xml的命名空间也也映射到了接口，注释掉接口类的配置。

 

经过多番测试 正确的配置方式有一些两种

第一种 配置 中加载 xml，xml文件的namespace对应 接口完全限定名。

     

第二种  配置接口  接口中包含注解的sql语句

       
                -->

--------------------------------------------------------------------------------------------------------------

第一种包含内容

userMapper.xml  文件内容：

 
 
   select *from user where userid=#{_parameter}
 



  select * from user 




  insert into user(userid,username,others) values(#{userid},#{username},#{others})




      update user
      set username=#{username},others=#{others}
      where userid=#{userid}





   
      delete from user where userid=#{userid}
   
 
 


 
      insert into user(userid,username,others) values
   
      (#{item.userid},#{item.username},#{item.others})
   





 

接口内容

public interface UserMapperDao {


public int add(User user);

 
public int delete(int id);

 
public int update(User user);

 
public User getUser(int id);

 
 
public int addOne(User user);

 
public int deleteOne(int id);

 
public int updateOne(User user);

 
public User getUserOne(int id);

 
public  List getUserAll();


public int insertBatch(List list);
}

第二种接口  定义内容：

public interface UserMapper {



@Insert("insert into user(userid,username,others) values(#{userid},#{username},#{others})")
public int add(User user);

@Delete(" delete from user where userid=#{id}")
public int delete(int id);

@Update("update user set username=#{username},others=#{others} where userid=#{userid}")
public int update(User user);

@Select("select *from user where userid=#{id}")
public User getUser(int id);

 
@Insert("insert into user(userid,username,others) values(#{userid},#{username},#{others})")
public int addOne(User user);

@Delete(" delete from user where userid=#{id}")
public int deleteOne(int id);

@Update("update user set username=#{username},others=#{others} where userid=#{userid}")
public int updateOne(User user);

@Select("select *from user where userid=#{id}")
public User getUserOne(int id);

@Select("select *from user")
public  List getUserAll();
 
}