Freddie's Ria World- 严重: Exception loading sessions from persistent storage – Blog Title http://javaflex.net Just another flex weblog Thu, 19 Aug 2010 08:28:21 +0000 http://wordpress.org/?v=2.9.2 zh hourly 1 严重: Exception loading sessions from persistent storage http://javaflex.net/java/exception-loading-sessions-persistent-storage/ http://javaflex.net/java/exception-loading-sessions-persistent-storage/#comments Tue, 02 Feb 2010 00:50:39 +0000 Freddie http://javaflex.net/?p=152 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

]]> http://javaflex.net/java/exception-loading-sessions-persistent-storage/feed/ 0 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. http://javaflex.net/java/hibernatewrite-operations-allowed-readonly-mode-flushmodenevermanual-turn-session-flushmodecommitauto-remove-readonly-marker-transaction-definition/ http://javaflex.net/java/hibernatewrite-operations-allowed-readonly-mode-flushmodenevermanual-turn-session-flushmodecommitauto-remove-readonly-marker-transaction-definition/#comments Fri, 29 Jan 2010 04:01:28 +0000 Freddie http://javaflex.net/?p=150
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
         */
        protected void closeSession(Session session, SessionFactory factory) {
                session.flush();
                super.closeSession(session, factory);
        }
}
]]> http://javaflex.net/java/hibernatewrite-operations-allowed-readonly-mode-flushmodenevermanual-turn-session-flushmodecommitauto-remove-readonly-marker-transaction-definition/feed/ 0 myeclipse 8.0 更改默认workspace http://javaflex.net/java/myeclipse-8-0-change-workspace/ http://javaflex.net/java/myeclipse-8-0-change-workspace/#comments Mon, 25 Jan 2010 08:05:06 +0000 Freddie http://javaflex.net/?p=147 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~

]]> http://javaflex.net/java/myeclipse-8-0-change-workspace/feed/ 0 [spring]:org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode http://javaflex.net/java/springorgspringframeworkdaoinvaliddataaccessapiusageexception-write-operations-allowed-readonly-mode/ http://javaflex.net/java/springorgspringframeworkdaoinvaliddataaccessapiusageexception-write-operations-allowed-readonly-mode/#comments Wed, 30 Dec 2009 08:55:15 +0000 Freddie http://javaflex.net/?p=145 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

]]> http://javaflex.net/java/springorgspringframeworkdaoinvaliddataaccessapiusageexception-write-operations-allowed-readonly-mode/feed/ 0 org.hibernate.StaleStateException: Batch update returned unexpected row count from update: 0 actual row count: 0 expected: 1 http://javaflex.net/java/orghibernatestalestateexception-batch-update-returned-unexpected-row-count-update-0-actual-row-count-0-expected-1/ http://javaflex.net/java/orghibernatestalestateexception-batch-update-returned-unexpected-row-count-update-0-actual-row-count-0-expected-1/#comments Wed, 30 Dec 2009 07:14:36 +0000 Freddie http://javaflex.net/?p=142 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 flex.messaging.endpoints.BaseHTTPEndpoint.service(BaseHTTPEndpoint.java:278)
 at flex.messaging.MessageBrokerServlet.service(MessageBrokerServlet.java:322)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
 at java.lang.Thread.run(Unknown Source)
15:00:17,875 ERROR AbstractFlushingEventListener:277 – Could not synchronize database state with session
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 flex.messaging.endpoints.BaseHTTPEndpoint.service(BaseHTTPEndpoint.java:278)
 at flex.messaging.MessageBrokerServlet.service(MessageBrokerServlet.java:322)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
 at java.lang.Thread.run(Unknown Source)

解决办法：

 我遇到过一次差不多的问题，但不一定和你这个一样．
当时找到的原话是：
The JDBC driver is telling Hibernate that it did not update any rows as a result of Hibernate ’s INSERT or UPDATE. Hibernate reasonably enough thinks that this cannot be correct.
注意unsaved-value是个很重要的属性。Hibernate通过这个属性来判断一个对象应该save还是update，如果这个对象的id是unsaved-value的话，那说明这个对象不是 persistence object要save（insert)；如果id是非unsaved-value的话，那说明这个对象是persistence object（数据库中已存在），只要update就行了。
你可以Debug跟一下你的代码，看看在
session.update(obj);
的时候，obj的主键的值是不是按你定义的那样，obj可以被hibernate认为是一个已经持久化在数据库里的对象

上面是网上找的！ 我的原因也是这样！ 因为存vo 的时候，没有把主键给存进去，所以hibernate会觉得应该是insert 而不是update！！

]]> http://javaflex.net/java/orghibernatestalestateexception-batch-update-returned-unexpected-row-count-update-0-actual-row-count-0-expected-1/feed/ 1 flex+BlazeDS与spring集成 http://javaflex.net/flex/flexblazedsspring/ http://javaflex.net/flex/flexblazedsspring/#comments Fri, 18 Dec 2009 02:28:53 +0000 Freddie http://javaflex.net/?p=116

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~

]]> http://javaflex.net/flex/flexblazedsspring/feed/ 0