如果你把數據庫的jar包導入了的話就應該看下你用的那個數據庫了下面是我針對不同數據庫百度的你先看看

無法創建請求服務，后面跟著jdbc環境問題，hibernate的配置文件中關于數據庫連接和配置的地方有問題。
這是連接oracle的代碼
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="hibernate.connection.url">jdbc:oracle:thin:@172.28.144.110:1521:SHKRP1QA</property>
<property name="hibernate.connection.username">TP</property>
<property name="hibernate.connection.password">PSH#TP</property>

<mapping class="it.robot.po.User_infor"/>

<mapping resource="it/robot/po/user_hbm.xml"/>

</session-factory>
</hibernate-configuration>
這是連接mysql的配置文件代碼

<?xml version="1.0" encoding="GBK" ?>
<!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="hibernate.connection.driver_class">
com.mysql.jdbc.Driver
</property>
<property name="hibernate.connection.url">
jdbc:mysql://localhost:3306/shopping
</property>
<property name="hibernate.connection.username">
root
</property>
<property name="hibernate.connection.password">
root
</property>
<property name="dialect">
org.hibernate.dialect.MySQLInnoDBDialect

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

<mapping resource="Newsss.hbm.xml"/>
</session-factory>

</hibernate-configuration>
其實 很有可能是你配置文件中沒有配置數據庫方言，你試試配置一下數據庫方言
mysql的方言就是上面代碼中
<property name="dialect">
org.hibernate.dialect.MySQLInnoDBDialect

</property>