Mybatis中实现oracle的批量插入、更新
oracle 实现在Mybatis中批量插入，下面测试可以使用，在批量插入中不能使用insert 标签，只能使用select标签进行批量插入，否则会提示错误
### Cause: java.sql.SQLSyntaxErrorException: ORA-00933: SQL 命令未正确结束 ; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: ORA-00933: SQL 命令未正确结束
- 批量插入方式一
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.attence.attence.dao.AttenceDao">
<resultMap id="Attence" type="Attence">
<id column="ATTENCEKEY" property="attenceKey"/>
<result column="EPC" property="epc"/>
<result column="ANT" property="ant"/>
<result column="RSSI" property="rssi"/>
<result column="DEVICE" property="device"/>
<result column="CRC" property="crc"/>
<result column="BCC" property="bcc"/>
<result column="DATETIME" property="dateTime" />
</resultMap>
<select id="insertAttence" parameterType="List">
INSERT ALL
<foreach collection="list" item="attence" index="index" separator="">
into Attence(
attenceKey,
epc,
ant,
rssi,
device,
crc,
bcc,
dateTime
)
values
(
#{attence.id},
#{attence.epc},
#{attence.ant},
#{attence.rssi},
#{attence.device},
#{attence.crc},
#{attence.bcc},
#{attence.dateTime}
)
</foreach>
SELECT *
FROM dual
</select>
</mapper>
以上方式不支持oracle的主键序列方式。
- 批量插入方式二
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.attence.attence.dao.AttenceDao">
<resultMap id="Attence" type="Attence">
<id column="ATTENCEKEY" property="attenceKey"/>
<result column="EPC" property="epc"/>
<result column="ANT" property="ant"/>
<result column="RSSI" property="rssi"/>
<result column="DEVICE" property="device"/>
<result column="CRC" property="crc"/>
<result column="BCC" property="bcc"/>
<result column="DATETIME" property="dateTime" />
</resultMap>
<insert id="insertAttence" parameterType="java.util.List">
insert into Attence(
attenceKey,
epc,
ant,
rssi,
device,
crc,
bcc,
dateTime
)
Select
SEQ_ATTENCE.NEXTVAL,a.*
From (
<foreach collection="list" item="attence" index="index" separator="union all">
(
Select
#{attence.epc},
#{attence.ant},
#{attence.rssi},
#{attence.device},
#{attence.crc},
#{attence.bcc},
#{attence.dateTime}
From dual
)
</foreach>
)
</insert>
</mapper>
同时由于使用oracle的自增加序列，无法联合union all使用，会提示错误，必须加上select语句进行进一步封装。
1、传入的参数只有一个list时，则Mybatis映射collection的键名list，若传入含有其他参数，需要使用HashMap，同时键名为HashMap对应的键名。
2、传入的参数只有一个array时，则Mybatis映射collection的键名array，若传入含有其他参数，需要使用HashMap，同时键名为HashMap对应的键名。
- 传递包含有数组参数的多参数HashMap实现批量插入
<select id="insertGuideVideoList" parameterType="HashMap">
insert into Guide_Video(
id,
guideId,
videoId
)
Select
SEQ_Guide_Video.NEXTVAL ,#{guideId}, video.*
From(
<foreach collection="arrGuideVideo" item="videoId" index="index" separator="union all">
Select
#{videoId} videoId
From dual
</foreach>
)video
</select>
arrGuideVideo是一个字符串数组，这里必须使用select标签，而不能使用insert标签。如果使用insert标签执行会提示语句未结束。
- 实现批量更新
<update id="updateTest" parameterType="Test">
Begin
Update TST_TEST
<set>
<if test="test.testName != null and test.testName!= ''">
TESTNAME = #{test.testName},
</if>
<if test="test.gatherKey != null and test.gatherKey!= ''">
GATHERKEY = #{test.gatherKey},
</if>
<if test="test.subjectKey != null and test.subjectKey!= ''">
SUBJECTKEY = #{test.subjectKey},
</if>
<if test="test.gradeKey != null and test.gradeKey!= ''">
GRADEKEY = #{test.gradeKey},
</if>
<if test="test.answerCount != null and test.answerCount!= ''">
answerCount = #{test.answerCount},
</if>
<if test="test.answerEndTime != null and test.answerEndTime!= ''">
answerEndTime = #{test.answerEndTime},
</if>
<if test="test.answerTimeLength != null and test.answerTimeLength!= ''">
answerTimeLength = #{test.answerTimeLength},
</if>
</set>
Where testKey = #{testKey}
End;
</update> 实现批量更新实际上就是 生成oracle语句的代码块，然后jdbc执行sql语句。