mapper.xml 简化技巧
insert 可复用
<sql id="setField">
<set>
<if test="taskVersionId != null">task_version_id = #{taskVersionId},</if>
<if test="uid != null">uid = #{uid},</if>
<if test="userName != null">user_name = #{userName},</if>
<if test="greyDate != null">grey_date = #{greyDate},</if>
</set>
</sql>
<insert id="insert" parameterType="com.**.**.app.grey.core.bean.GreyRecordDO">
insert into h_grey_record
<include refid="setField"/>
</insert>
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update复用
<sql id="setUpdateField">
<set>
<if test="pushDevice.appId != null">app_id = #{pushDevice.appId},</if>
<if test="pushDevice.deviceId != null">device_id = #{pushDevice.deviceId},</if>
<if test="pushDevice.registrationId != null">registration_id = #{pushDevice.registrationId},</if>
<if test="pushDevice.os != null">os = #{pushDevice.os},</if>
<if test="pushDevice.osVersion != null">os_version = #{pushDevice.osVersion},</if>
<if test="pushDevice.appVersion != null">app_version = #{pushDevice.appVersion},</if>
<if test="pushDevice.mobileBrands != null">mobile_brand = #{pushDevice.mobileBrands},</if>
<if test="pushDevice.mobileModel != null">mobile_model = #{pushDevice.mobileModel},</if>
<if test="pushDevice.pushSwitchStatus != null">push_switch_status = #{pushDevice.pushSwitchStatus},</if>
<if test="pushDevice.regIdType != null">reg_id_type = #{pushDevice.regIdType},</if>
<if test="pushDevice.bundleId != null">bundle_id = #{pushDevice.bundleId},</if>
</set>
</sql>
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query复用
<sql id="query_user_where">
<where>
<if test="id!=null and id!=''"> and id=#{id} </if>
<if test="username!=null and username!=''"> and username like '%${username}%' </if>
</where>
</sql>
//使用include引用sql片段
<select id="findUserList" parameterType="user" resultType="user">
select * from user
<include refid="query_user_where"/>
</select>
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