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java - 与 HSQLDB 的 Hibernate 连接

转载 作者:行者123 更新时间:2023-11-29 05:57:25 25 4
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我在设置我的第一个 Hibernate 项目时遇到了问题。我按照教程进行操作,但在启动代码时卡住了。我相信,在启动与 HSQLDB 的连接时,程序会卡住。它不提供任何错误消息。
控制台中的详细输出如下:

172 [main] INFO org.hibernate.annotations.common.Version - Hibernate Commons Annotations 3.2.0.Final
172 [main] INFO org.hibernate.cfg.Environment - Hibernate 3.6.10.Final
172 [main] INFO org.hibernate.cfg.Environment - hibernate.properties not found
187 [main] INFO org.hibernate.cfg.Environment - Bytecode provider name : javassist
187 [main] INFO org.hibernate.cfg.Environment - using JDK 1.4 java.sql.Timestamp handling
265 [main] INFO org.hibernate.cfg.Configuration - configuring from resource: /hibernate.cfg.xml
265 [main] INFO org.hibernate.cfg.Configuration - Configuration resource: /hibernate.cfg.xml
375 [main] INFO org.hibernate.cfg.Configuration - Reading mappings from resource : org/itg/ACLwithHibernate/User.hbm.xml
484 [main] INFO org.hibernate.cfg.Configuration - Configured SessionFactory: null

现在它已配置好,我调用 buildSessionFactory():

562 [main] INFO org.hibernate.cfg.HbmBinder - Mapping class: org.itg.ACLwithHibernate.User -> USER
577 [main] INFO org.hibernate.cfg.Configuration - Hibernate Validator not found: ignoring
593 [main] INFO org.hibernate.cfg.search.HibernateSearchEventListenerRegister - Unable to find org.hibernate.search.event.FullTextIndexEventListener on the classpath. Hibernate Search is not enabled.
593 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - Using Hibernate built-in connection pool (not for production use!)
593 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - Hibernate connection pool size: 10
593 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - autocommit mode: false
609 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - using driver: org.hsqldb.jdbcDriver at URL: jdbc:hsqldb:hsql://localhost:9001
609 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - connection properties: {user=sa, password=****}

还有……仅此而已。它永远不会继续执行我的 main() 类中的下一条指令。它被困在某个地方。当我调试时,我得到这个:

overview of the debugger

这是我的 hibernate.cfg.xml:

<hibernate-configuration>

<session-factory>

<!-- Database connection settings -->
<property name="connection.driver_class">org.hsqldb.jdbcDriver</property>
<property name="connection.url">jdbc:hsqldb:hsql://localhost:9001</property>
<property name="connection.username">sa</property>
<property name="connection.password"></property>

<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">10</property>

<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.HSQLDialect</property>

<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>

<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>

<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>

<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">update</property>

<mapping resource="org/itg/ACLwithHibernate/User.hbm.xml"/>

</session-factory>

</hibernate-configuration>

我的 HSQLDB 服务器正在运行并输出以下内容:

[Server@3ed5dee4]: [Thread[org.hsqldb.Server.main(),5,org.hsqldb.Server]]: checkRunning(false) entered
[Server@3ed5dee4]: [Thread[org.hsqldb.Server.main(),5,org.hsqldb.Server]]: checkRunning(false) exited
[Server@3ed5dee4]: Startup sequence initiated from main() method
[Server@3ed5dee4]: Loaded properties from [C:\Users\dbr\workspace\test_hibernate\server.properties]
[Server@3ed5dee4]: Initiating startup sequence...
[Server@3ed5dee4]: Server socket opened successfully in 0 ms.
[Server@3ed5dee4]: Database [index=0, id=0, db=file:target/data/tutorial, alias=] opened sucessfully in 630 ms.
[Server@3ed5dee4]: Startup sequence completed in 640 ms.
[Server@3ed5dee4]: 2012-07-18 12:36:53.717 HSQLDB server 2.0.0 is online on port 9001
[Server@3ed5dee4]: To close normally, connect and execute SHUTDOWN SQL
[Server@3ed5dee4]: From command line, use [Ctrl]+[C] to abort abruptly

当 server.silent = false 时,我的客户端连接时还会得到以下信息:

[Thread[HSQLDB Server @1af5458a,5,org.hsqldb.Server]]: handleConnection(Socket[addr=/127.0.0.1,port=49438,localport=9001]) entered
[Thread[HSQLDB Server @1af5458a,5,org.hsqldb.Server]]: handleConnection() exited
[Thread[HSQLDB Connection @9437a04,5,HSQLDB Connections @1af5458a]]: ODBC client connected. ODBC Protocol Compatibility Version 0.0

您以前遇到过类似的问题吗?您知道出了什么问题吗?
非常感谢您。
丹妮

最佳答案

当 HSQLDB 服务器与 Hibernate 或其他框架一起使用时,必须检查客户端和服务器使用的 HSQLDB jar 版本,并确保它们是相同版本的 HSQLDB。还需要使用最新版本的 HSQLDB。

如果您使用属性 server.silent=false(或 silent=false 作为命令行参数)启动 HSQLDB 服务器,则很容易对其进行故障排除。这将显示尝试的连接。

在此示例中,服务器显示:

[Thread[HSQLDB Connection @9437a04,5,HSQLDB Connections @1af5458a]]: 
ODBC client connected. ODBC Protocol Compatibility Version 0.0

这表示版本不兼容问题,因为 ODBC 实际上并未用于 Java 到 HSQLDB 的连接。

关于java - 与 HSQLDB 的 Hibernate 连接,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11540758/

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