由于要寫一個(gè)Spring的培訓(xùn)教材，要做Spring的事務(wù)樣例，于是開始寫樣例，寫好了一測，控制臺有SQL輸出，數(shù)據(jù)庫卻查詢不到數(shù)據(jù)，查亞查亞，花了一個(gè)多小時(shí)，原來是獲取的Service不是經(jīng)過代理的Service，自然事務(wù)不起作用，數(shù)據(jù)庫里就沒有數(shù)據(jù)了，鄙視一下自己。
配置文件樣例如下（已經(jīng)修改了dao和service的命名，減少了寫錯(cuò)的可能性，以后命名問題一定要注意）：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<context:annotation-config />
<context:component-scan base-package="com.*" />
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation" value="classpath:hibernate.cfg.xml" />
<property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />
</bean>
<!-- 定義事務(wù)管理器（聲明式的事務(wù)） -->
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<!-- 配置DAO -->
<bean id="generatorDaoTarget" class="com.*.spring.dao.GeneratorDaoImpl">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="generatorDao"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<!-- 配置事務(wù)管理器 -->
<property name="transactionManager"><ref bean="transactionManager" /></property>
<property name="target"><ref bean="generatorDaoTarget" /></property>
<property name="proxyInterfaces"><value>com.*.spring.dao.GeneratorDao</value></property>
<!-- 配置事務(wù)屬性 -->
<property name="transactionAttributes">
<props>
<prop key="*">PROPAGATION_REQUIRED</prop>
</props>
</property>
</bean>
<bean id="plantDaoTarget" class="com.*.spring.dao.PlantDaoImpl">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="plantDao"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<!-- 配置事務(wù)管理器 -->
<property name="transactionManager"><ref bean="transactionManager" /></property>
<property name="target"><ref bean="plantDaoTarget" /></property>
<property name="proxyInterfaces"><value>com.*.spring.dao.PlantDao</value></property>
<!-- 配置事務(wù)屬性 -->
<property name="transactionAttributes">
<props>
<prop key="*">PROPAGATION_REQUIRED</prop>
</props>
</property>
</bean>
<!-- 配置Service -->
<bean id="plantGeneratorServiceTarget"
class="com.*.spring.service.PlantGeneratorServiceImpl">
<property name="plantDao">
<ref bean="plantDao" />
</property>
<property name="generatorDao">
<ref bean="generatorDao" />
</property>
</bean>
<bean id="plantGeneratorService"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<!-- 配置事務(wù)管理器 -->
<property name="transactionManager"><ref bean="transactionManager" /></property>
<property name="target"><ref bean="plantGeneratorServiceTarget" /></property>
<property name="proxyInterfaces"><value>com.*.spring.service.PlantGeneratorService</value></property>
<!-- 配置事務(wù)屬性 -->
<property name="transactionAttributes">
<props>
<prop key="*">PROPAGATION_REQUIRED</prop>
</props>
</property>
</bean>
</beans>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- 各屬性的配置-->
<!-- 為true表示將Hibernate發(fā)送給數(shù)據(jù)庫的sql顯示出來 -->
<property name="hibernate.show_sql">true</property>
<property name="hibernate.hbm2ddl.auto">none</property>
<!-- SQL方言，這邊設(shè)定的是MySQL -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<!--連接數(shù)據(jù)庫的Driver-->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<!--數(shù)據(jù)庫連接url-->
<property name="connection.url">jdbc:mysql://localhost:3306/test</property>
<!--用戶名-->
<property name="connection.username">root</property>
<!--密碼-->
<property name="connection.password">123456</property>
<!-- 映射文件 -->
<mapping class="com.*.spring.domain.Generator" />
<mapping class="com.*.spring.domain.Plant" />
</session-factory>
</hibernate-configuration>
public interface GeneratorDao {
/**
* 獲取所有機(jī)組數(shù)據(jù)
* @return
*/
public List<Generator> listGenerators();
/**
* 保存機(jī)組數(shù)據(jù)
* @param generator 機(jī)組數(shù)據(jù)
*/
public void save(Generator generator);
}
public class GeneratorDaoImpl extends HibernateDaoSupport implements GeneratorDao {
@SuppressWarnings("unchecked")
public List<Generator> listGenerators() {
return this.getSession().createQuery("from Generator").list();
}
public void save(Generator generator) {
this.getSession().save(generator);
}
}
posted on 2009-03-16 22:24
The Matrix 閱讀(1550)
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