HTTP Status 500 - Write operations are not allowed in read-only mode (FlushMode.MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition. type Exception report message Write operations are not allowed in read-only mode (FlushMode.MANUAL): Turn your Session into FlushMode.COMMIT/AUTOor remove 'readOnly' marker from transaction definition.

description The server encountered an internal error that prevented it from fulfilling this request. exception org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition.

org.springframework.orm.hibernate5.HibernateTemplate.checkWriteOperationAllowed(HibernateTemplate.java:1126) org.springframework.orm.hibernate5.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:619) org.springframework.orm.hibernate5.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:616) org.springframework.orm.hibernate5.HibernateTemplate.doExecute(HibernateTemplate.java:341)

 .....

HTTP状态500-写入操作不允许在只读模式(FlushMode.MANUAL)中进行：将会话转换为FlushMode.COMMIT/AUTO，或从事务定义中删除“readOnly”标记。

错误原因：

代码中使用了@Transactional注解事务，因为你没有在applicationContext.xml中配置事务自动扫描，而使用了默认的只读模式，不能随代码运行自动刷新，

更正方法：

在applicationContext.xml文件中增加配置：

    <!--配置事务管理器 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
    <!-- 开启事务扫描，采用注解方式 -->
    <tx:annotation-driven transaction-manager="transactionManager" />

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