springboot启动过程中数据库连接池初始化后直接关闭了

最近在项目中增加新功能模块时遇到这样的问题：项目加载完成后，在初始化数据库连接池时，连接池关闭了。

[code]Looking for resource handler mappings
Found resource handler mapping： URL pattern=，//**/favicon.ico^, locations:[class path resource [META-INF/resources/], class path resource [resources/], class path resource [static/], class path resource [public/], l Found resource handler mapping： URL pattern=，//webjars/**，/, locations:[class path resource [META-INF/resources/webjars/]], resolvers=[org.springframework, web.servlet, resource.PathResourceResolver@4e8afdad]
Found resource handler mapping： URL pattern:”/**”，locations:[class path resource [META-INF/resources/], class path resource [resources/], class path resource [static/], class path resource [public/], URL [file：E：/
Tomcat started on port(s): 8080 (http) with context path
Adding PropertySource * server, ports' with highest search precedence
Started SzinsApplication in 8.129 seconds (JVM running for 9.13)
{dataSource-l} inited
{dataSource-l} closed

 原因：参数类型写错了 parameterType写成了parameterMap

[code]<select id="getMenuLabelCode" parameterMap="java.lang.String" resultType="java.lang.String">
SELECT
t2.CODE
FROM dp_directory_split_sub tl
INNER JOIN dp_base_label t2
ON tl.ELE_ID = t2.ID
WHERE tl.SPLIT_ID = #{splitld, jdbcType=VARCHAR}
〈/select〉