Question

我正在使用带有Spring API的Hibernate 5。使用apache tomcat9运行Java 8。 Mysql 5.x. 我使用getSession（）。getCurrentSession（）访问对象，每个请求只有一个弹簧会话。（很高兴粘贴我的struts动作，但不确定它是否有帮助）。

我启用了stat日志记录，它会在结尾显示所有查询和会话统计信息所以我会看到一堆查询然后这个（正确的）一个会话摘要：

2017-06-17 19:04:56,621 INFO  org.hibernate.engine.internal.StatisticalLoggingSessionEventListener.end - Session Metrics {
    1591683 nanoseconds spent acquiring 9 JDBC connections;
    1073951 nanoseconds spent releasing 8 JDBC connections;
    1173965 nanoseconds spent preparing 10 JDBC statements;
    6098889 nanoseconds spent executing 10 JDBC statements;
    0 nanoseconds spent executing 0 JDBC batches;
    0 nanoseconds spent performing 0 L2C puts;
    0 nanoseconds spent performing 0 L2C hits;
    0 nanoseconds spent performing 0 L2C misses;
    100987632 nanoseconds spent executing 7 flushes (flushing a total of 413 entities and 1445 collections);
    95887194 nanoseconds spent executing 3 partial-flushes (flushing a total of 130 entities and 130 collections)
}

然而，在此之后（会话结束），它还会显示大约20-40个空会话，如下所示：

2017-06-17 19:04:56,873 INFO  org.hibernate.engine.internal.StatisticalLoggingSessionEventListener.end - Session Metrics {
    0 nanoseconds spent acquiring 0 JDBC connections;
    0 nanoseconds spent releasing 0 JDBC connections;
    0 nanoseconds spent preparing 0 JDBC statements;
    0 nanoseconds spent executing 0 JDBC statements;
    0 nanoseconds spent executing 0 JDBC batches;
    0 nanoseconds spent performing 0 L2C puts;
    0 nanoseconds spent performing 0 L2C hits;
    0 nanoseconds spent performing 0 L2C misses;
    0 nanoseconds spent executing 0 flushes (flushing a total of 0 entities and 0 collections);
    0 nanoseconds spent executing 0 partial-flushes (flushing a total of 0 entities and 0 collections)
}

有谁知道这是否正常？

Spring Hibernate显示了大量的空会话

0 个答案: