用 Hibernate 连接 PostgreSQL 9.2.1

我有一个空白的 Spring MVC 项目,并且使用 Maven 安装了 Hibernate 和 PostgreSQL 驱动程序。

关于如何将 PostgreSQL 连接到 Hibernate 的完整教程不多。

有人帮忙吗?

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This is a hibernate.cfg.xml for posgresql and it will help you with basic hibernate configurations for posgresql.

<!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>
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
<property name="hibernate.connection.username">postgres</property>
<property name="hibernate.connection.password">password</property>
<property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/hibernatedb</property>






<property name="connection_pool_size">1</property>


<property name="hbm2ddl.auto">create</property>


<property name="show_sql">true</property>






<mapping class="org.javabrains.sanjaya.dto.UserDetails"/>


</session-factory>
</hibernate-configuration>

If the project is maven placed it in src/main/resources, in the package phase it will copy it in ../WEB-INF/classes/hibernate.cfg.xml

This is the hibernate.cfg.xml file to connect postgresql 9.5 and this is help to you basic configuration.

 <?xml version='1.0' encoding='utf-8'?>


<!--
~ Hibernate, Relational Persistence for Idiomatic Java
~
~ License: GNU Lesser General Public License (LGPL), version 2.1 or later.
~ See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
-->
<!DOCTYPE hibernate-configuration SYSTEM
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration
>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">org.postgresql.Driver</property>
<property name="connection.url">jdbc:postgresql://localhost:5433/hibernatedb</property>
<property name="connection.username">postgres</property>
<property name="connection.password">password</property>


<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>


<!-- SQL dialect -->
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</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 class="com.waseem.UserDetails"/>
</session-factory>
</hibernate-configuration>

Make sure File Location should be under src/main/resources/hibernate.cfg.xml

Yes by using spring-boot with hibernate configuration files we can persist the data to the database. keep hibernating .cfg.xml in your src/main/resources folder for reading the configurations related to database.

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