Spring - Hibernate Integration

① introducing c3p0 bag, spring-orm package, spring-tx package

② spring main configuration file applicationContext.xml introduced beans, tx, aop constraints

② spring configuration profiles; sessionFactory not configure the binding thread otherwise reported abnormal

<!-- 配置dataSource -->
<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
    <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/spring?useUnicode=true&amp;characterEncoding=UTF-8&amp;serverTimezone=GMT%2B8&amp;useSSL=true"></property>
    <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
    <property name="user" value="root"></property>
    <property name="password" value="123456"></property>
</bean>
<!-- 配置sessionFactory -->
<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource"></property>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
            <prop key="hibernate.show_sql">true</prop>
            <prop key="hibernate.format_sql">true</prop>
            <prop key="hibernate.hbm2ddl.auto">update</prop>
            <prop key="hibernate.connection.isolation">4</prop>
        </props>
    </ Property > 
    <-! Configuration ORM metadata automatically scans all the configuration files in the package -> 
    < Property name = "mappingDirectoryLocations" value = "CLASSPATH: COM / sikiedu / Domain" > </ Property > 
< / bean >

③ injection layer was disposed Dao sessionFactory

<!-- 配置Dao -->
<bean name="userDao" class="com.sikiedu.dao.UserDao">
    <property name="sessionFactory" ref="sessionFactory"></property>
</bean>

④ Dao layer HibernateDaoSupport class inheritance using getHibernateTemplate () for obtaining Session

package com.sikiedu.dao;

import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.query.NativeQuery;
import org.springframework.orm.hibernate5.HibernateTemplate;
import org.springframework.orm.hibernate5.support.HibernateDaoSupport;

import com.sikiedu.domain.User;

public class UserDao extends HibernateDaoSupport {

    public User findUser(User user) {

        Session session = getHibernateTemplate().getSessionFactory().getCurrentSession();
　　　　　// Session session = HibernateUtils.getCurrentSession();

        String sql = "SELECT * FROM user WHERE username = ? AND password = ?";
        NativeQuery<User> sqlQuery = session.createSQLQuery(sql);
        sqlQuery.setParameter(1, user.getUsername());
        sqlQuery.setParameter(2, user.getPassword());
        sqlQuery.addEntity(User.class);

        User temp = sqlQuery.uniqueResult();

        return temp;
    }
}

SpringAOP transaction configuration -  HibernateTransactionManager

● applicationContext.xml Configuration

Configuration weaving: weaving the above notification to the target object

<! - configuration Hibernate core transaction manager - depends on the connection pool -> 
< the bean name = "the transactionManager" class = "org.springframework.orm.hibernate5.HibernateTransactionManager" > 
　　< Property name = "the sessionFactory" REF = " the sessionFactory " > </ Property > 
</ the bean > 
<-! configure the notification -> 
< TX: the advice ID =" the advice " Transaction Manager- =" the transactionManager " > 
　　< TX: Attributes > 
　　　　< TX:method name="*"/><! - * matches all methods -> 
　　</ TX: Attributes > 
</ TX: the advice > 
<! - Configuration weaving: weaving a notification to the target object -> 
< AOP: config > 
　　<! - Configuring pointcut expression ! -> <- .... com.sikiedu.service * * * (..) represents com.sikiedu * * all methods of all classes in the package; (..) parameter representation dispensable -> 
　　< AOP: the pointcut expression The = "Execution (com.sikiedu.service * * * (..)..)" ID = "the pointcut" /> 
　　<- configuration section (notification tangent point +! ) ->
　　< AOP: Advisor the advice-REF = "the advice" the pointcut-REF = "the pointcut" />
</aop:config>

● Configuring web.xml, to expand the scope of the Session

<filter>
    <filter-name>openSession</filter-name>
    <filter-class>org.springframework.orm.hibernate5.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>openSession</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

● service layer uses - aop enhanced automatic use transaction

package com.sikiedu.service;

import com.sikiedu.dao.UserDao;
import com.sikiedu.domain.User;

public class UserService {

    private UserDao userDao;

    public User findUser(User user) {

        User temp = null;
        temp = userDao.findUser(user);
        return temp;
    }

    public UserDao getUserDao() {
        return userDao;
    }

    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }

}