ibatis教学实例

xml的配置：

<mapper namespace="com.dao.StudyDao" >

<resultMap id="BaseResultMap" type="com.model.Study" >
<id column="id" property="sId" jdbcType="INTEGER" />
<result column="course_name" property="courseName" jdbcType="VARCHAR" />
<result column="level" property="level" jdbcType="VARCHAR" />
<result column="createtime" property="createTime" jdbcType="DATE" />
</resultMap>

<sql id="where_course">
<trim prefix="where" prefixOverrides="and|or">
<if test="results != null and results != ''">
<if test="results.courseName!= null and results.courseName!='' ">
and course_name like CONCAT('%',#{results.courseName},'%')
</if>
</if>
</trim>
</sql>

<sql id="Base_Column_List" >
course_name ,createtime,level,id
</sql>

<select id="getCourseList" resultMap="BaseResultMap" parameterType="com.model.Study">
select <include refid="Base_Column_List"/>
from s_course
<include refid="where_course"/>
order by id desc
</select>

<select id="countCourse" resultType="int" parameterType="com.model.Study">
select count(1) from s_course <include refid="where_course"/>
</select>

<select id="getCourse" resultMap="BaseResultMap" parameterType="java.lang.String" >
select
<include refid="Base_Column_List" />
from s_course a
where id = #{sId,jdbcType=INTEGER}
</select>

<delete id="delCourse" parameterType="int" >
delete from s_course
where id = #{sId,jdbcType=INTEGER}
</delete>

<insert id="addCourse" parameterType="com.model.Study" >
insert into s_course (course_name, createtime, level)
values (#{courseName,jdbcType=VARCHAR}, #{createTime,jdbcType=DATE}, #{level,jdbcType=VARCHAR})
</insert>

<update id="updateCourse" parameterType="com.model.Study" >
update s_course
<set >
<if test="courseName != null" >
course_name = #{courseName,jdbcType=VARCHAR},
</if>
<if test="level != null" >
level = #{level,jdbcType=VARCHAR},
</if>
<if test="createTime != null" >
createtime = #{createTime,jdbcType=DATE},
</if>
</set>
where id = #{sId,jdbcType=INTEGER}
</update>

</mapper>