mybatis 的傳入?yún)?shù)如何既有對象又有單個(gè)參數(shù)
3 回答
catspeake
TA貢獻(xiàn)1111條經(jīng)驗(yàn) 獲得超0個(gè)贊
使用@Param注解
| 1 | List<Person> query(@Param("query") PersonQuery query, @Param("offset") int offset, @Param("rows") int rows); |
mapper中sql使用#{參數(shù)名}獲取參數(shù)。#{query.a}是取PersonQuery對象里的a字段的值
| 12345 | <select id="query" resultMap="result"> SELECT * FROM XXX WHERE A=#{query.a} AND B=#{query.b} LIMIT #{offset},#{rows}</select> |
撒科打諢
TA貢獻(xiàn)1934條經(jīng)驗(yàn) 獲得超2個(gè)贊
mybatis支持foreach語句，
語法大致如下：
<update id="batchUpdate">
update tblsupertitleresult
<trim prefix="set" suffixOverrides=",">
<trim prefix="checkState =case" suffix="end,">
<foreach collection="list" item="i" index="index">
<if test="i.checkState!=null">
when (userHhCode=#{i.userHhCode} and titleId=#{i.titleId}) then #{i.checkState}
</if>
</foreach>
</trim>
<trim prefix=" correctDate =case" suffix="end,">
<foreach collection="list" item="i" index="index">
<if test="i.correctDate!=null">
when (userHhCode=#{i.userHhCode} and titleId=#{i.titleId}) then #{i.correctDate}
</if>
</foreach>
</trim>
<trim prefix="result =case" suffix="end," >
<foreach collection="list"item="i" index="index">
<if test="i.result!=null">
when (userHhCode=#{i.userHhCode} and titleId=#{i.titleId}) then #{i.result}
</if>
</foreach>
</trim>
</trim>
where
<foreach collection="list" separator="or"item="i" index="index" >
(userHhCode =#{i.userHhCode} andtitleId=#{i.titleId})
</foreach>
</update>
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