春季休眠需要更多时间的任何原因？

目前，我正在春季和冬眠的一个项目上工作。花更多的时间来获取记录并在JSP中显示这些记录。我将时间戳记无处不在，以了解花费更多时间的地方：

Time @ HomeController[start] : 2014-07-09 18:58:52.621
**Time @ userService[start] : 2014-07-09 18:58:52.622**
**Time @ UserDao[start] : 2014-07-09 18:58:57.678**
Time before executing Query : 2014-07-09 18:58:57.678
Time After executing Query : 2014-07-09 18:58:59.272
Time @ UserDao[end] : 2014-07-09 18:58:59.272
Time @ userService[End] : 2014-07-09 18:59:00.068
Time @ HomeController[end] : 2014-07-09 18:59:00.068
Time stamp in JSP :2014-07-09 18:59:00.129

通过以上分析，从服务层到DAO层大约需要5秒钟，我在下面给出了服务和DAO的代码：

UserService :

     public class UserServiceImpl implements UserService {  
    @Override  
    public List<User> getUserpagination(int page) {
        System.out.println("Time @ userService[start] : "+new Timestamp(new Date().getTime())); ----------- (1)
        List<User> u = userDao.getUserpagination(page);
        System.out.println("Time @ userService[End] : "+new Timestamp(new Date().getTime()));
        return u;
     }
  }  

UserDao :

    public class UserDaoImpl implements UserDao { 
      @Override  
      @Transactional  
      public List<User> getUserpagination(int page) {  

        System.out.println("Time @ UserDao[start] : "+new Timestamp(new Date().getTime())); ------- (2)


        return userlist;  

    } 

因此，从第（1）行到第（2）行需要5秒钟。谁能解释为什么以及如何减少时间？

我正在从属性文件获取数据库连接：

jdbc.properties：

database.driver=oracle.jdbc.driver.OracleDriver 
database.url=jdbc:oracle:thin:@xxx.xxx.xxx.xx:1521:osm
database.user=osm  
database.password=xxxxxx  
hibernate.dialect=org.hibernate.dialect.Oracle10gDialect
hibernate.show_sql=true  
hibernate.hbm2ddl.auto=create/update   

下面是XML文件中的配置：

<context:property-placeholder location="classpath:jdbc.properties" />

<tx:annotation-driven transaction-manager="hibernateTransactionManager" />


<bean id="dataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="${database.driver}" />
    <property name="url" value="${database.url}" />
    <property name="username" value="${database.user}" />
    <property name="password" value="${database.password}" />
</bean>


<bean id="sessionFactory"
    class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="annotatedClasses">
        <list>
            <value>com.xxx</value>
        </list>
    </property>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">${hibernate.dialect}</prop>

        </props>

    </property>

 </bean>

<bean id="hibernateTransactionManager"
    class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory" />
</bean>

现在，我使用了HikariCP，并且出现了超时错误：

SEVERE: Servlet.service() for servlet [dispatcher] in context with path [/springhiber1] threw exception [Request processing failed; nested exception is    org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate  Session for transaction; nested exception is org.hibernate.exception.GenericJDBCException:  Cannot open connection] with root cause
java.sql.SQLException: Timeout of 30000ms encountered waiting for connection.
at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:192)
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:91)
at org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:81)