Mybatis返会插入主键id

在mapper的xml文件中配置  useGeneratedKeys以及 keyProperty 返会Id即可

<insert id="insertObject"  useGeneratedKeys="true"   keyProperty="id"  parameterType="www.change.tm.model.Orders" >

insert into orders
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="number!=null">
OrderNumber,
</if>
<if test="orderTime!=null">
orderTime,
</if>
</trim>
values
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="number!=null">
#{number},
</if>
<if test="orderTime!=null">
#{orderTime},
</if>
</trim>
</insert>