Question

我正在用eclipse进行休眠项目。我将所有的jar文件（包括Mysql连接器jar）放在WEB-INF lib文件夹中。当我尝试运行代码时，它将引发错误。

例外

org.hibernate.exception.JDBCConnectionException：无法打开连接org.hibernate.exception.internal.SQLStateConversionDelegate.convert（SQLStateConversionDelegate.java:131）org.hibernate.exception.internal.StandardSQLExceptionConverter.convert（StandardSQLExceptionConverter.java:49 ）org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert（SqlExceptionHelper.java:125）org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert（SqlExceptionHelper.java:110）org.hibernate.engine.jdbc.internal .LogicalConnectionImpl.obtainConnection（LogicalConnectionImpl.java:304）org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection（LogicalConnectionImpl.java:169）org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doBegin（JdbcTransaction.java ：67）org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin（AbstractTransactionImpl.java:160）org.hibernate.internal.SessionImpl.beginTransaction（SessionImpl.java:1363）first.doPost（first.java:37）javax .servlet.http.HttpSer vlet.service（HttpServlet.java:661）javax.servlet.http.HttpServlet.service（HttpServlet.java:742）org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:52）

根本原因

java.sql.SQLException：找不到适用于jdbc：mysql：// localhost：3306 / sample java.sql / java.sql.DriverManager.getConnection（Unknown Source）java.sql / java.sql.DriverManager的驱动程序。 getConnection（未知源）org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl.getConnection（DriverManagerConnectionProviderImpl.java:192）org.hibernate.internal.AbstractSessionImpl $ NonContextualJdbcConnectionAccess.obtainConnection（AbstractSessionImpl.java:278）org.hibernate.engine .jdbc.internal.LogicalConnectionImpl.obtainConnection（LogicalConnectionImpl.java:297）org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection（LogicalConnectionImpl.java:169）org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doBegin （JdbcTransaction.java:67）org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin（AbstractTransactionImpl.java:160）org.hibernate.internal.SessionImpl.beginTransaction（SessionImpl.java:1363）first.doPost（first.java）：37）javax.ser vlet.http.HttpServlet.service（HttpServlet.java:661）javax.servlet.http.HttpServlet.service（HttpServlet.java:742）org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:52 < / p>

enter image description here

这是我的配置：

“-//休眠/休眠配置DTD 3.0 // EN”

“ http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd”>

<session-factory name="factory">

    <property name="connection.driver_class">
        com.mysql.jdbc.Driver

    </property>

    <property name="connection.url">jdbc:mysql://localhost:3306/sample</property>

    <property name="connection.username">
        root
    </property>
    <property name="connection.password">
        root
    </property>
    <property name="connection.pool_size">5</property>
    <!-- SQL dialect -->
    <property name="dialect">
        org.hibernate.dialect.MySQLDialect
    </property>
    <!-- Echo all executed SQL to stdout -->

    <property name="hbm2ddl.auto">update</property>
    <mapping class="user" />

</session-factory>

Java

使用休眠模式找不到合适的驱动程序

0 个答案: