one2many.DepartmentMapper.xml

    
        
        
        
        
        
        
    
    
    
        
        
        
        
        
        
    
    
    
        select * from t_dept where did=#{did}
    
    
    
        select * from t_dept d
        inner join t_emp e
        on d.did=e.deptId
        where d.did=#{did}
    
    
    
    
    
        insert into t_dept(dname) values(#{dname})
    
    
    
    
        
            SELECT LAST_INSERT_ID()
        
        insert into t_dept(dname) values(#{dname})
    
    
```

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这个很重要吧

          javaType 属性的类型
          ofType 列表中元素的类型
          column 本映射文件是针对部门的映射，对应的列从t_dept里来找， 对应的列的值，要传给select对应的查询使用
      -->