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";
     }
 }