SSH FlushMode 錯誤解決記錄

具體錯誤如圖所示

錯誤原因

未正確配置事務。

首先糾正一點，如下配置並不能解決問題。

    早在 hinernate4  的 OpenSessionInViewFilter，  就去掉了hibernate3的setFlushMode的方法， 所以在web.xml配置全局變量並不管用
    <filter>
        <filter-name>openSessionInViewFilter</filter-name>
        <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
        <init-param>
            <param-name>sessionFactoryBeanName</param-name>
            <param-value>sessionFactory</param-value>
        </init-param>
        <init-param>
            <param-name>singleSession</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>flushMode</param-name>
            <param-value>AUTO</param-value>
        </init-param>
    </filter>

Spring 事務原理

Spring配置文件中關於事務配置總是由三個組成部分，分別是DataSource、TransactionManager和代理機制這三部分，無論哪種配置方式，一般變化的只是代理機制這部分。

DataSource、TransactionManager這兩部分只是會根據數據訪問方式有所變化，比如使用Hibernate進行數據訪問 時，DataSource實際爲SessionFactory，TransactionManager的實現爲 HibernateTransactionManager。

經檢查，我的錯誤原因是沒有配置transactionManager 。

解決方式——正確配置 Spring 事務

先給出我的解決方式

1.配置 DataSource

<bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <!--這裏配置爲你自己的數據庫信息-->
        <property name="url" value="jdbc:mysql://localhost:3306/JSP"/>
        <property name="username" value="root"/>
        <property name="password" value="****"/>
</bean>

2.配置sessionFactory

<bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <!--這裏配置爲在上一步中設置的dataSource名-->
        <property name="dataSource" ref="datasource"/>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">
                    org.hibernate.dialect.MySQLDialect
                </prop>
            </props>
        </property>
        <property name="annotatedClasses">
            <list>
                <value>model.LoginEntity</value>
                <value>model.StudentEntity</value>
                <value>model.AchievementEntity</value>
                <value>model.CourseEntity</value>
            </list>
        </property>
    </bean>

3.配置transactionManager

   <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
           <!--這裏配置爲在上一步中設置的sessionFactory名-->
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>

1. 配置transactionInterceptor

  <bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor">
                <!--這裏配置爲在上一步中設置的transactionManager名-->
        <property name="transactionManager" ref="transactionManager"/>
        <property name="transactionAttributes">
            <props>
                <!--設置權限列表，支持通配符-->
                <!--此處設置爲給所有函數讀寫權限-->
                <prop key="*">PROPAGATION_REQUIRED</prop>
            </props>
        </property>
    </bean>

5.配置BeanNameAutoProxyCreator

    <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
        <property name="beanNames">
            <list>
            <!--配置應用transactionInterceptor的 DaoImp的列表，可以使用通配符-->
                <value>*DaoImp</value>
            </list>
        </property>
        <property name="interceptorNames">
            <list>
                    <!--這裏配置爲在上一步中設置的transactionInterceptor名-->
                <value>transactionInterceptor</value>
            </list>
        </property>
    </bean>

至此，問題解決。

附上我的spring-config 文件，僅供參考

<?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: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.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
    <bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/JSP"/>
        <property name="username" value="root"/>
        <property name="password" value="****"/>
    </bean>
    <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <property name="dataSource" ref="datasource"/>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">
                    org.hibernate.dialect.MySQLDialect
                </prop>
            </props>
        </property>
        <property name="annotatedClasses">
            <list>
                <value>model.LoginEntity</value>
                <value>model.StudentEntity</value>
                <value>model.AchievementEntity</value>
                <value>model.CourseEntity</value>
            </list>
        </property>
    </bean>

    <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>

    <bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor">

        <property name="transactionManager" ref="transactionManager"/>
        <property name="transactionAttributes">
            <props>
                <prop key="*">PROPAGATION_REQUIRED</prop>
            </props>
        </property>
    </bean>

    <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
        <property name="beanNames">
            <list>
                <value>*DaoImp</value>
            </list>
        </property>
        <property name="interceptorNames">
            <list>
                <value>transactionInterceptor</value>
            </list>
        </property>
    </bean>


    <!--login-->
    <bean id="loginDaoImp" class="dao.imp.LoginDaoImp">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
    <bean id="loginServiceManage" class="service.imp.LoginServiceManage">
        <property name="loginDao" ref="loginDaoImp"/>
    </bean>
    <bean id="loginAction" class="action.LoginAction" scope="prototype">
        <property name="loginService" ref="loginServiceManage"/>
    </bean>

    <!--info-->
    <bean id="infoDaoImp" class="dao.imp.InfoDaoImp">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
    <bean id="infoServiceManage" class="service.imp.InfoServiceManage">
        <property name="infoDao" ref="infoDaoImp"/>
    </bean>
    <bean id="infoAction" class="action.InfoAction">
        <property name="infoService" ref="infoServiceManage"/>
    </bean>

    <!--achievement-->
    <bean id="achievementDaoImp" class="dao.imp.AchievementDaoImp">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
    <bean id="achievementServiceManage" class="service.imp.AchievementServiceManage">
        <property name="achievementDao" ref="achievementDaoImp"/>
    </bean>
    <bean id="achievementAction" class="action.AchievementAction">
        <property name="achievementService" ref="achievementServiceManage"/>
    </bean>


</beans>

Terry.Li-彬 在他的博客 中給出給多的事務配置方式，本文參考了其文中的一種配置方式。