mybatis第一天课堂笔记

和的和1）响2到342。）输入参数输出结果型型自定义自定义3从包类、在在在是非自增主键返回的到<selectKeykeyProperty="id"order="BEFORE"resultType="java.lang.String">SELECT序列名.nextval()</selectKey>insertintouser(id,username,birthday,sex,address)value(#{id},#{username},#{birthday},#{sex},#{address})3.10.1parameterType3.10.2resultType3.10.3#{}和。。。。3.10.4selectOne和。4和对的4将。和。publicclassUserDaoImplimplementsUserDao{//需要向dao实现类中注入SqlSessionFactory//这里通过构造方法注入privateSqlSessionFactorysqlSessionFactory;publicUserDaoImpl(SqlSessionFactorysqlSessionFactory){this.sqlSessionFactory=sqlSessionFactory;}@OverridepublicUserfindUserById(intid)throwsException{SqlSessionsqlSession=sqlSessionFactory.openSession();Useruser=sqlSession.selectOne("test.findUserById",id);//释放资源sqlSession.close();returnuser;}@OverridepublicvoidinsertUser(Useruser)throwsException{SqlSessionsqlSession=sqlSessionFactory.openSession();//执行插入操作sqlSession.insert("test.insertUser",user);//提交事务sqlSmit();//释放资源sqlSession.close();}@OverridepublicvoiddeleteUser(intid)throwsException{SqlSessionsqlSession=sqlSessionFactory.openSession();//执行插入操作sqlSession.delete("test.deleteUser",id);//提交事务sqlSmit();//释放资源sqlSession.close();}}12的于接口思路（1中2mapper.java中的3mapper.java中的4mapper.java中的=在代理对象内部调用selectOne或selectListmapper接口方法参数只能有一个是否影响系统开发5在。在在或在typeAliases（别名）重点在指或单个别名定义批量定义别名（常用）typeHandlers.和））））））mappersmapper.java和mapper(推荐使用)6。。在UserMapper.xml7需求mapper.xmlmapper.java测试代码小结pojo中在mapper.java12.12定义reusltMap使用r