[BUG] spring-authorization-server整合druid，作为链接池，在并发情况下访问/oauth2/token获取token时出现阻塞问题

[ct1561]

Database Type

MySQL

Database Version

MySQL 8.0.23

Druid Version

1.2.20

JDK Version

OpenJDK17

Error SQL

无

Testcase Code

max-active：5
max-wait: 60000
test-on-borrow: false
test-on-return: false
keep-alive: true
test-while-idle: false
min-idle: 3
remove-abandoned: false

若是访问/oauth2/token的并发数超过最大链接数，则会出现阻塞情况，链接池中的连接全被占用，且不会释放；
当时druid监控的画面如图所示；

Stacktrace Info

No response

Error Info

通过java监控控制台发现，阻塞的进程都在DruidDataSource的getConnectionDirect方法中

java.base/java.lang.Thread.getStackTrace(Thread.java:1621)
com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:1562)
com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5058)
com.alibaba.druid.filter.FilterAdapter.dataSource_getConnection(FilterAdapter.java:2759)
com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5054)
com.alibaba.druid.filter.stat.StatFilter.dataSource_getConnection(StatFilter.java:704)
com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5054)
com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1468)
com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1458)
com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:83)
org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource.getConnection(AbstractRoutingDataSource.java:211)
jdk.internal.reflect.GeneratedMethodAccessor46.invoke(Unknown Source)
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

[ct1561]

@wenshao 老师这可能是哪方面的问题造成的呢