在mapper的xml文件中配置 useGeneratedKeys
以及 keyProperty 返回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>
PS：Mybatis中insert中返回主键ID的方法
1、XyzMapper.xml
<insertid=“doSomething"parameterType="map"useGeneratedKeys="true"keyProperty=“yourId"> ... </insert>
或
<insert id=“doSomething" parameterType=“com.xx.yy.zz.YourClass" useGeneratedKeys="true" keyProperty=“yourId"> ... </insert>
2、XyzMapper.java
public int doSomething(Map<String, Object> parameters); or public int doSomething(YourClass c);
3、要在map或c中有一个字段名为yourId，Mybatis会自动把主键值赋给这个字段。
Map<String, Object> parameters = new HashMap<String, Object>(); parameters.put(“yourId”, 1234); ... mapper.doSomething(parameters); System.out.println(“id of the field that is primary key” + parameters.get(“yourId"));
或
YourClass c = new YourClass(); ... mapper.doSomething(c); System.out.println(“id of the field that is primary key” + c.yourId);
好了，到此结束，希望对大家有所帮助！
