tomcat6 配置数据源步骤
1. C:\Program Files\Apache Software Foundation\Tomcat 6.0\conf目录下找下context.xml文件.

2. 在该文件中的</Context>标签内添加以下配置内容:
<Resource
name="jndi-eu3c"
auth=""
type="javax.sql.DataSource"
maxActive="100"
maxIdle="30"
maxWait="10000"
username="root"
password="admin"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/eu3c?useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&transformedBitIsBoolean=true" />

3. 在工程中找到hibernate.cfg.xml,找到<session-factory>标签,在该标签内添加以下内容:
<property name="hibernate.cglib.use_reflection_optimizer">
true
</property>
<property name="connection.datasource">
java:comp/env/jndi-eu3c
</property>
<property name="dialect">
org.hibernate.dialect.MySQL5Dialect
</property>