在mapper的xml文件中配置 useGeneratedKeys
以及 keyProperty 返回Id即可
id="highlighter_288088">
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<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> |
1、XyzMapper.xml
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<insertid=“doSomething"parameterType="map"useGeneratedKeys="true"keyProperty=“yourId">...</insert> |
或
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<insert id=“doSomething" parameterType=“com.xx.yy.zz.YourClass" useGeneratedKeys="true" keyProperty=“yourId">...</insert> |
2、XyzMapper.java
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public int doSomething(Map<String, Object> parameters);orpublic intdoSomething(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。
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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
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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！
原文链接：http://blog.csdn.net/mr_yarnell/article/details/70146838
