将PostgreSQL 9.2.1与Hibernate连接起来

Question

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

我在完整的教程中没有说明如何将PostgreSQL与Hibernate连接。

这里有任何帮助吗？

Answer 1

这是postgresql的hibernate.cfg.xml，它将帮助你为postgresql提供基本的hibernate配置。

<!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>

Answer 2

如果项目是maven，则将其放在src/main/resources中，在包裹阶段，它会将其复制到../WEB-INF/classes/hibernate.cfg.xml

Answer 3

这是连接postgresql 9.5的hibernate.cfg.xml文件，这有助于您进行基本配置。

 <?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>

确保文件位置位于 src / main / resources / hibernate.cfg.xml

下

Answer 4

是的，通过使用带有hibernate配置文件的spring-boot，我们可以将数据保存到数据库中。 在src / main / resources文件夹中保持hibernating .cfg.xml，以便读取与数据库相关的配置。