MyBatis (Mapper mapping file)

<!-- parametertype: Parameter type, can be omitted,     gets the value of the self-increment primary key:        MySQL supports the self-increment primary key, the self-increment primary key value obtains, MyBatis also uses Statement.getgenreatedkeys ();        Usegeneratedkeys= "true"; Gets the primary key value policy using the self-increment primary key        Keyproperty Specifies the corresponding primary key attribute, that is, after MyBatis obtains the primary key value, encapsulates the value to which property    of JavaBean--    <insert id= "addemp" parametertype= " Com.atguigu.mybatis.bean.Employee "        usegeneratedkeys=" true "keyproperty=" id "databaseid=" mysql " >        INSERT INTO Tbl_employee (last_name,email,gender)         values (#{lastname},#{email},#{gender})     </insert>

MyBatis (Mapper mapping file)