mybatis 查詢沒有返回值，SQL查詢卻有返回值。

mybatis 查詢含Date類型參數的SQL時，沒有返回值

在使用mybatis查詢數據的時候，當參數類型爲JAVA的Date類時，查詢始終沒有返回值，將SQL放到數據庫中直接運行卻能獲取返回值。

select sif.id as id,sif.file_name as fileName,concat(sic.root_path,sif.path) as path,sif.create_date as createDate
	from sc_image_file as sif
	left join sc_image_config as sic on sic.id = sif.config_id
	where  del_flag = '0'
<if test="scId !=null and scId != ''">
    and sic.sc_id = #{scId}
</if>
<if test="devType">
   and sic.dev_type_id = #{devType}
</if>
<if test="startTime!=null and endTime!=null">
   and sif.create_date &gt;=  #{startTime}
   and sif.create_date &lt;=  #{endTime}
</if>

執行後命令如下：

==>  Preparing: select sif.id as id,sif.file_name as fileName,concat(sic.root_path,sif.path) as path,sif.create_date as createDate from sc_image_file as sif left join sc_image_config as sic on sic.id = sif.config_id where del_flag = '0' and sic.sc_id = ? and sic.dev_type_id = ? and sif.create_date >= ? and sif.create_date <= ? 
==> Parameters: 00000000002(String), 1(Integer), 2020-06-13 16:08:07.0(Timestamp), 2020-06-13 16:10:07.0(Timestamp)
<==      Total: 0

其中startTime跟endTime爲JAVA Date類型。mybatis運行查詢結果爲0。

最後四處百度，最終定位到當mybatis按datetime條件查詢，參數爲時間戳時，如果時區沒設置對，將獲取不到正確的數據。

jdbc:mysql://localhost:3306/table_name?useTimezone=true&serverTimezone=GMT%2B8

在jdbc properties的連接地址上，增加時區爲東八區。
GMT%2B8表示東八區
修改後重新測試，結果如下：

==>  Preparing: select sif.id as id,sif.file_name as fileName,concat(sic.root_path,sif.path) as path,sif.create_date as createDate from sc_image_file as sif left join sc_image_config as sic on sic.id = sif.config_id where del_flag = '0' and sic.sc_id = ? and sic.dev_type_id = ? and sif.create_date >= ? and sif.create_date <= ? 
==> Parameters: 00000000002(String), 1(Integer), 2020-06-13 16:08:07.0(Timestamp), 2020-06-13 16:10:07.0(Timestamp)
<==    Columns: id, fileName, path, createDate
<==        Row: 1, test.jpg, BJ_1/2020/0620, 2020-06-13 16:09:01
<==      Total: 1

成功獲取結果。