Freddie's Ria World

严重: Exception loading sessions from persistent storage

发表时间：02. 2月, 2010 作者：Freddie.

0

严重: Exception loading sessions from persistent storage
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: …
J2ee的session并没有要求session attribute必须要Serializable呀。原来这是tomcat 5的新功能，服务复位后自动恢复session。
如果要禁用这一特性，到apache-tomcat/conf/Catalina/localhost目录下找到webapp同名的xml，修改成：
引用
<Context path=”…” reloadable=”…” docBase=”…” workDir=”…”>
<Manager className=”org.apache.catalina.session.PersistentManager” saveOnRestart=”false”/>
</Context>
对于使用Netbeans自带tomcat的情况，配置文件在用户Home目录下的.netbeans底下，例如我windows机器上是：
C:\Documents and Settings\pinxue\.netbeans\5.5beta\apache-tomcat-5.5.16_base\conf\Catalina\localhost\
如果想保留这个功能，但是清除异常的session持久记录，删除相应的SESSION.ser即可，该文件在：
.netbeans\5.5beta\apache-tomcat-5.5.16_base\work\Catalina\localhost\{webAppName}\SESSIONS.ser
补充：
Netbeans 重新发布 webapp 后，对应的context会重新生成，应该修改项目下META-INF/context.xml。
Netbeans生成该文件的模板是：
\Program Files\netbeans-5.5beta\enterprise3\apache-tomcat-5.5.16\conf\context.xml

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解决Hibernate的Write operations are not allowed in read-only mode (FlushMode.NEVER/MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove ‘readOnly’ marker from transaction definition.

发表时间：29. 1月, 2010 作者：Freddie.

0

一般这个错误是事务引起的,如果确定事务没有问题,还是有这个错,可以重写OpenSessionInViewFilter的2个方法
在myfaces的wiki里提供了OpenSessionInViewFilter的一个子类如下：
public class OpenSessionInViewFilter extends org.springframework.orm.hibernate3.support.OpenSessionInViewFilter {

        /**
         * we do a different flushmode than in the codebase
         * here
         */
        protected Session getSession(SessionFactory sessionFactory) throws DataAccessResourceFailureException {
                Session session = SessionFactoryUtils.getSession(sessionFactory, true);
                session.setFlushMode(FlushMode.COMMIT);
                return session;
        }
        /**
         * we do an explicit flush here just in case
         * we do not have an automated flush
         [...]

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myeclipse 8.0 更改默认workspace

发表时间：25. 1月, 2010 作者：Freddie.

0

新装的MyEclipse 8 用起来感觉一切都还好，就是有个问题很让人恼火：每次启动它总是会以它自己默认的workspace启动，而本人的workspace放在D盘好多年了！用不习惯你放在c盘哪的workspace，所以每次都得改个workspace，很是麻烦！估计8.0版太新了，网上也没找到解决办法！自己动手吧~
经过文件夹下一番搜索，办法出来了~
打开安装目录下的：MyEclipse 8.x Latest\configuration\config.ini
#This configuration file was written by: org.eclipse.equinox.internal.frameworkadmin.equinox.EquinoxFwConfigFileParser
#Sat Jan 16 11:52:12 CST 2010
com.genuitec.pulse.client.handshake.id=
org.eclipse.update.reconcile=false
eclipse.p2.profile=com.poweredbypulse.profile-0-rb-578452
osgi.instance.area.default=file\:/D\:/code/myeclipse
osgi.framework=file\:../Common/plugins/org.eclipse.osgi_3.5.1.R35x_v20090827.jar
com.genuitec.pulse.client.credentials=FW6iJnX7ETWLtWzcLRhKXAvUV4dpfM/d4DztxO6N1aDbmRNeGr6c9M9a1mFSi6PK0Ie7c/y44×1/ WDrDZZ1WQw9hEP122jlVppYXTnpSOg9GYTkShp2nj55azaS3EIdzTd3tTsAOfBHMSYMXQkET9+KE OQAzuNpSzeTUtuE6mw8\=
com.genuitec.pulse.client.blueprint.id=rb-578452
osgi.bundles=reference\:file\:org.eclipse.equinox.simpleconfigurator_1.0.102.v200911181800.jar@1\:start
com.genuitec.pulse.common.server.url=https\://www.poweredbypulse.com\:443
org.eclipse.equinox.simpleconfigurator.configUrl=file\:org.eclipse.equinox.simpleconfigurator/bundles.info
eclipse.product=com.genuitec.myeclipse.product8.ide
看到红色字体显示的内容没？~改掉它就OK拉~ 我的工作路径已经改为d:\code\myeclipse了~

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[spring]:org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode

发表时间：30. 12月, 2009 作者：Freddie.

0

org.springframework.dao.InvalidDataAccessApiUsageException: Write
operations are not allowed in read-only mode
(FlushMode.NEVER/MANUAL): Turn your Session into
FlushMode.COMMIT/AUTO or remove ‘readOnly’ marker from transaction
definition.
at
org.springframework.orm.hibernate3.HibernateTemplate.checkWriteOper
ationAllowed(HibernateTemplate.java:1095)

这个异常产生的主要原因是DAO采用了Spring容器的事务管理策略，如果操作方法的名称和事务策略中指定的被管理的名称不能够匹配上，spring 就会采取默认的事务管理策略(PROPAGATION_REQUIRED,read only).如果是插入和修改操作，就不被允许的，所以包这个异常

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org.hibernate.StaleStateException: Batch update returned unexpected row count from update: 0 actual row count: 0 expected: 1

发表时间：30. 12月, 2009 作者：Freddie.

1

错误日志：
org.hibernate.StaleStateException: Batch update returned unexpected row count from update: 0 actual row count: 0 expected: 1
at org.hibernate.jdbc.BatchingBatcher.checkRowCount(BatchingBatcher.java:92)
at org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:78)
at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:57)
at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:174)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:226)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:137)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:274)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:730)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:324)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:86)
at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:578)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:662)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:632)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:314)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:116)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy1.update(Unknown Source)
at com.tub.service.ProductServiceImpl.update(ProductServiceImpl.java:48)
at com.tub.action.ProductAction.saveOrUpdate(ProductAction.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at flex.messaging.services.remoting.adapters.JavaAdapter.invoke(JavaAdapter.java:421)
at flex.messaging.services.RemotingService.serviceMessage(RemotingService.java:183)
at flex.messaging.MessageBroker.routeMessageToService(MessageBroker.java:1503)
at flex.messaging.endpoints.AbstractEndpoint.serviceMessage(AbstractEndpoint.java:884)
at flex.messaging.endpoints.amf.MessageBrokerFilter.invoke(MessageBrokerFilter.java:121)
at flex.messaging.endpoints.amf.LegacyFilter.invoke(LegacyFilter.java:158)
at flex.messaging.endpoints.amf.SessionFilter.invoke(SessionFilter.java:44)
at flex.messaging.endpoints.amf.BatchProcessFilter.invoke(BatchProcessFilter.java:67)
at flex.messaging.endpoints.amf.SerializationFilter.invoke(SerializationFilter.java:146)
at [...]

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flex+BlazeDS与spring集成

发表时间：18. 12月, 2009 作者：Freddie.

0

本文基本上就是Christophe Coenraets 先生的 Using Flex with Spring 的翻译版本，加上了自己的注解便于理解
首先，你得有一个SpringFactory.java类。去网上找，没有的话留下邮箱我发给你们~
1.新建一个工程，服务器端选用j2ee，跟建立blazeDS一样~ 配置好路径，加入web容器支持和spring容器支持~（这一步比较简单，详细步骤就省了~）
2.现在我们来写hello world~ 首先在src下写一个HelloWorld.java，我的路径是com.tub.HelloWorld.java
public class HelloWorld {
    public String message(String str){
        return str;
    }
}
3.然后是flex端~
    <mx:RemoteObject id=”ro” destination=”MessageService”/>
    <mx:TextInput id=”ta”/>
    <mx:Button label=”Button” click=”ro.message(String(ta.text))”/>
    <mx:Label text=”{ro.message.lastResult}”/>
注：ro当然就指的是HelloWorld了，destination指定的内容是我们需要在WEB-INF/flex/remoting-config.xml中配置的destination了,它会指定一个具体对应的类或者是spring工厂~（我们这里当然是交给spring工厂拉）
4.代码都写好了，我们现在要对spring进行配置了~~
把SpringFactory放在java目录下，我的路径是com.tub.spring
然后，我们需要在web.xml中加入
    <context-param>
        <param-name>spring</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
最后，我们还需要对flex的service-config.xml进行配置，加入
<factories>
    <factory id=”spring” />
</factories>
好了，大功告成拉~ 赶快去deploy了运行看看吧~

存档于 'Java'

严重: Exception loading sessions from persistent storage

详细内容

解决Hibernate的Write operations are not allowed in read-only mode (FlushMode.NEVER/MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove ‘readOnly’ marker from transaction definition.

详细内容

myeclipse 8.0 更改默认workspace

详细内容

[spring]:org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode

详细内容

org.hibernate.StaleStateException: Batch update returned unexpected row count from update: 0 actual row count: 0 expected: 1

详细内容

flex+BlazeDS与spring集成

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