Java Spring Boot 中的 Hibernate 统计信息不起作用？
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Hibernate statistics in spring boot not working?
提问by JimB
I have a small sample app here
我这里有一个小示例应用程序
https://github.com/jimbasilio/SpringBoot
that creates some simple data in the database and some other things I'm working on to kick the tires on spring boot (side note: so far i LOVE spring boot!!). If you clone the git repo you can visit the url:
这会在数据库中创建一些简单的数据，以及我正在做的一些其他事情，以在弹簧靴上踢轮胎（旁注：到目前为止，我喜欢弹簧靴！！）。如果您克隆 git repo，您可以访问以下网址：
http://127.0.0.1:8080/hello/get/1
and it'll load from the database and write the hibernate statistics to the console.
它将从数据库加载并将休眠统计信息写入控制台。
I do have a problem though, with or without configuring hibernate statistics via the application.properties file:
但是，无论是否通过 application.properties 文件配置休眠统计信息，我都遇到了问题：
hibernate.generate_statistics=true
when i write the hibernate statistics out i get nothing useful. I'm fetching the statistics via:
当我写出休眠统计数据时，我没有任何用处。我正在通过以下方式获取统计信息：
Session session = (Session) this.entityManager.getDelegate();
session.getSessionFactory().getStatistics().logSummary();
HelloEntity entity = helloRepository.findOne(id);
entityManager.flush();
session.getSessionFactory().getStatistics().logSummary();
my SECOND log message (after flush) is below. You can see it doesn't even register sessions being opened. I'm using spring boot 1.0.1.RELEASE.
我的第二条日志消息（刷新后）如下。您可以看到它甚至没有注册正在打开的会话。我正在使用 Spring Boot 1.0.1.RELEASE。
pom.xml
pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.0.1.RELEASE</version>
</parent>
log file:
日志文件：
2014-04-28 20:51:29.415 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000161: Logging statistics....
2014-04-28 20:51:29.416 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000251: Start time: 1398732682476
2014-04-28 20:51:29.416 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000242: Sessions opened: 0
2014-04-28 20:51:29.416 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000241: Sessions closed: 0
2014-04-28 20:51:29.416 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000266: Transactions: 0
2014-04-28 20:51:29.416 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000258: Successful transactions: 0
2014-04-28 20:51:29.417 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000187: Optimistic lock failures: 0
2014-04-28 20:51:29.417 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000105: Flushes: 0
2014-04-28 20:51:29.417 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000048: Connections obtained: 0
2014-04-28 20:51:29.417 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000253: Statements prepared: 0
2014-04-28 20:51:29.417 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000252: Statements closed: 0
2014-04-28 20:51:29.417 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000239: Second level cache puts: 0
2014-04-28 20:51:29.418 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000237: Second level cache hits: 0
2014-04-28 20:51:29.418 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000238: Second level cache misses: 0
2014-04-28 20:51:29.418 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000079: Entities loaded: 0
2014-04-28 20:51:29.418 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000080: Entities updated: 0
2014-04-28 20:51:29.418 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000078: Entities inserted: 0
2014-04-28 20:51:29.418 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000076: Entities deleted: 0
2014-04-28 20:51:29.419 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000077: Entities fetched (minimize this): 0
2014-04-28 20:51:29.419 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000033: Collections loaded: 0
2014-04-28 20:51:29.419 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000036: Collections updated: 0
2014-04-28 20:51:29.419 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000035: Collections removed: 0
2014-04-28 20:51:29.419 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000034: Collections recreated: 0
2014-04-28 20:51:29.420 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000032: Collections fetched (minimize this): 0
2014-04-28 20:51:29.420 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000438: NaturalId cache puts: 0
2014-04-28 20:51:29.420 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000439: NaturalId cache hits: 0
2014-04-28 20:51:29.420 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000440: NaturalId cache misses: 0
2014-04-28 20:51:29.420 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000441: Max NaturalId query time: 0ms
2014-04-28 20:51:29.420 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000442: NaturalId queries executed to database: 0
2014-04-28 20:51:29.420 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000210: Queries executed to database: 0
2014-04-28 20:51:29.420 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000215: Query cache puts: 0
2014-04-28 20:51:29.421 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000433: update timestamps cache puts: 0
2014-04-28 20:51:29.421 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000434: update timestamps cache hits: 0
2014-04-28 20:51:29.421 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000435: update timestamps cache misses: 0
2014-04-28 20:51:29.421 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000213: Query cache hits: 0
2014-04-28 20:51:29.421 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000214: Query cache misses: 0
2014-04-28 20:51:29.421 INFO 18044 --- [nio-8080-exec-1] o.h.s.internal.ConcurrentStatisticsImpl : HHH000173: Max query time: 0ms
采纳答案by gerrytan
I think Hibernate is just not reading your config.
我认为 Hibernate 只是没有读取您的配置。
According to Hibernate's Reference Manualyou're supposed to put Hibernate configuration on hibernate.properties or hibernate.cfg.xml. If those didn't work you might also want to try the programmatic config.
根据Hibernate 的参考手册，您应该将 Hibernate 配置放在 hibernate.properties 或 hibernate.cfg.xml 上。如果这些不起作用，您可能还想尝试编程配置。
回答by Rashad Saif
Use spring.jpa.properties.hibernate.generate_statistics=trueinstead-ofhibernate.generate_statistics=true
使用 spring.jpa.properties.hibernate.generate_statistics=true代替hibernate.generate_statistics=true
