java 在 JPA 中使用连接池

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时间:2020-10-31 22:18:12  来源:igfitidea点击:

Using Connection Pool in JPA

javahibernatejpaconnection-poolingpersistence.xml

提问by Jasper

I hava a standalone JPA (Hibernate) - MySQL Application.

我有一个独立的 JPA (Hibernate) - MySQL 应用程序。

My persistence.xml looks like:

我的persistence.xml 看起来像:

     <persistence-unit name="JPAProj" transaction-type="RESOURCE_LOCAL">
            <!-- Persistence provider -->
            <provider>
                org.hibernate.ejb.HibernatePersistence
            </provider>
          ....
          <properties>
                    <property name='hibernate.show_sql' value='true'/>
                    <property name='hibernate.format_sql' value='true'/>
                    <property name='hibernate.dialect' value='org.hibernate.dialect.MySQL5InnoDBDialect'/>
                    <property name='hibernate.hbm2ddl.auto' value='update'/>

                    <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
                    <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost/classicmodels"/>
                    <property name="javax.persistence.jdbc.user" value="someuser"/>
                    <property name="javax.persistence.jdbc.password" value=""/>
           </properties>
     </persistence-unit>

I want to use a Connection Pool (say Apache DBCP) in this application, what changes do i need to make to persistence.xml?

我想在这个应用程序中使用连接池(比如 Apache DBCP),我需要对 persistence.xml 做哪些更改?

采纳答案by Vasu

You can use the c3p0 connection pooling for hibernate. Check this url C3P0 configuration

您可以使用 c3p0 连接池进行休眠。检查这个 url C3P0 配置