spring入门(五) spring mvc+hibernate

核心是让SessionFactory由Spring管理

1.引入依赖

<!-- https://mvnrepository.com/artifact/org.springframework/spring-orm -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-orm</artifactId>
    <version>5.0.9.RELEASE</version>
</dependency>
 <dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>5.3.2.Final</version>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.4</version>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-c3p0</artifactId>
    <version>5.3.2.Final</version>
</dependency>

2.配置 springmvc-config.xml  重点是 dataSource和sessionFactory.

<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
    <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/test"></property>
    <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
    <property name="user" value="root"></property>
    <property name="password" value="123456"></property>
</bean>
<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource"></property>
    <property name="mappingDirectoryLocations" value="classpath:mapping"></property>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
            <prop key="hibernate.c3p0.min_size">5</prop> <!--在连接池中可用数据库连接的最小数目-->
            <prop key="hibernate.c3p0.max_size">30</prop> <!--在连接池中所有数据库连接的最大数目-->
            <prop key="hibernate.c3p0.time_out">1800</prop> <!--设定数据库连接的超时时间-->
            <prop key="hibernate.c3p0.max_statement">50</prop> <!--可以被缓存的PreparedStatement的最大数目-->
            <prop key="hibernate.show_sql">true</prop>
        </props>
    </property>
</bean>

3.建立 *.hbm.xml和实体类Customer

mapping:Customer.hbm.xml,
model:Customer

 以上见  IntelliJ IDEA使用hibernate

4.测试

package com.ice.service;

import com.ice.model.Customer;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;

@Component
public class CustomerService {

    @Resource
    private SessionFactory sessionFactory;
    public void save(Customer customer){
        Session  session=sessionFactory.openSession();
        //可以根据情况决定是否用事务
        //Transaction tx = session.beginTransaction();
        session.save(customer);
        //tx.commit();
    }
}

package com.ice.controller;

import com.ice.model.Customer;
import com.ice.service.CustomerService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@RequestMapping("/")
@Controller
public class HomeController {
    @Autowired
    private CustomerService customerService;

    @RequestMapping("/")
    @ResponseBody
    public String index(){
        Customer customer = new Customer();
        customer.setId(5);
        customer.setName("hello!");
        customerService.save(customer);
        return "ok";
    }
}