Java 休眠配置文件
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Hibernate configuration file
提问by Cocottier
It seems that I have a problem with my configuration file but I really don't find out what it could be.
我的配置文件似乎有问题，但我真的不知道它可能是什么。
I used to use hibernate 3.6, I now use hibernate 4.2, there are proly some important changes that I ignore, but the doc seems to not change this part.
我曾经使用 hibernate 3.6，我现在使用 hibernate 4.2，我忽略了一些重要的变化，但文档似乎没有改变这部分。
Here is my configuration file:
这是我的配置文件：
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost/Test</property>
<property name="connection.username">root</property>
<property name="connection.password">*****</property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">10</property>
<property name="maxActive" value="10" />
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQL5Dialect</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.internal.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">create</property>
<!-- Mapping files -->
<mapping resource="database/config/mapping/test.hbm.xml"/>
</session-factory>
</hibernate-configuration>
And here is my java source:
这是我的java源代码：
public class CreateDB {
public static void main(String argv[]){
try {
Configuration configuration = new Configuration();
configuration.configure("database/config/DBCreate.cfg.xml");
ServiceRegistryBuilder serviceRegistryBuilder = new ServiceRegistryBuilder().applySettings(configuration
.getProperties());
SessionFactory sessionFactory = configuration
.buildSessionFactory(serviceRegistryBuilder.buildServiceRegistry());
DBConnect.Disconnect(null, sessionFactory.openSession()); // Just logout from a session
} catch (Exception e) {
System.out.println("Database unreachable.");
}
}
}
And here is the return statement:
这是返回语句：
mai 02, 2013 11:41:59 AM org.hibernate.annotations.common.Version <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.1.Final}
mai 02, 2013 11:41:59 AM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.2.0.Final}
mai 02, 2013 11:41:59 AM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
mai 02, 2013 11:41:59 AM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
mai 02, 2013 11:41:59 AM org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: database/config/DBCreate.cfg.xml
mai 02, 2013 11:41:59 AM org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: database/config/DBCreate.cfg.xml
Database unreachable.
I really don't get what is wrong, maybe someone will be able to enlight me. Sorry for possible disturbance and if my post isn't adapted, this is my first one.
我真的不明白有什么问题，也许有人能够启发我。对不起，可能的打扰，如果我的帖子没有改编，这是我的第一个。
Best regards.
此致。
采纳答案by Kevin Bowersox
Specify the port in the connection.url.
中指定端口connection.url。
<property name="connection.url">jdbc:mysql://localhost:3306/Test</property>
回答by Arti M
I have read an article which says in Hibernate 4 we require to mention the "hibernate" keyword in the property nametag of the configuration file.
我读过一篇文章，它说在 Hibernate 4 中我们需要在配置文件的属性名称标签中提及“ hibernate”关键字。
Sample format is -
样本格式是 -
Hibernate earlier version
休眠早期版本
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration
DTD//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="connection.url">jdbc:mysql://localhost/noob</property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>
<property name="connection.username">root</property>
<property name="connection.password"></property>
<!-- DB schema will be updated if needed -->
<property name="hbm2ddl.auto">create-drop</property>
<property name="show_sql">false</property>
<property name="format_sql">false</property>
</session-factory>
</hibernate-configuration>
Hibernate version 4
休眠版本 4
<hibernate-configuration xmlns="http://www.hibernate.org/xsd/hibernate-
configuration">
<session-factory>
<!-- Database connection settings -->
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost/noob</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password"></property>
<!-- JDBC connection pool (use the built-in) -->
<property name="hibernate.connection.pool_size">1</property>
<!-- SQL dialect -->
<property
name="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="hibernate.current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property
name="hibernate.cache.provider_class">org.hibernate.cache.internal.NoCacheProvider
</property>
<!-- Echo all executed SQL to stdout -->
<property name="hibernate.show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hibernate.hbm2ddl.auto">update</property>
</session-factory>
</hibernate-configuration>
Observe the "hibernate" keyword in the property nametag
观察属性名标签中的“ hibernate”关键字
The exact link is as follows -
具体链接如下——
回答by Nitul
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
When you change the XML file as per above comments, you must change the DTD definition.
当您按照上述注释更改 XML 文件时，您必须更改 DTD 定义。
