SSH几个常见错误分析

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SSH Java Bean Apache AOP

今天在做一个ssh整合小测试，在测试时出现许多错，好在是这些错误都通过网上的查找解决，得感谢网上的网友慷慨的给大家分享！

既然有错误就和大家一起分享，希望在别人学习的时候不会在碰到这种错误，当然了有哪些不足的地方还请大家多多指正.

1 SSH整合所需的包

注：Spring使用的是spring2.5.5版本

hibernate是hibernate3.3.2

struts是 struts2.1.6

我的数据库用的是mysql的所以在做测试时得需要开一个mysql服务系，具体的包如下图

以上的SSH包就是项目所需的包，其中struts2-codebehind-plugin-2.1.6.jar请大家注意，这个包加上会在项目启动时报第一个错如下

<?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-2.0.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.1.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.1.xsd">
	<bean id="datasource"
		class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName" value="com.mysql.jdbc.Driver" />
		<property name="url" value="jdbc:mysql://localhost:3306/test" />
		<property name="username" value="root" />
		<property name="password" value="" />
		<property name="initialSize" value="5" />
		<property name="maxActive" value="20" />

	</bean>
	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="datasource" />
		<property name="mappingResources" >
		<list>
		<value>model/TProductInfo.hbm.xml</value>
		<value>model/TProductSubsumption.hbm.xml</value>
		<value>model/TPurchasingProgramBasicInfo.hbm.xml</value>
		<value>model/TPurchasingProgramDetailedInfo.hbm.xml</value>
		<value>model/TRequisitionBasicInfo.hbm.xml</value>
		<value>model/TRequisitionDetailedInfo.hbm.xml</value>
		<value>model/TSupplierAgioInfo.hbm.xml</value>
		<value>model/User.hbm.xml</value>
		
		<value>model/TSupplierBasicInfo.hbm.xml</value>
		</list>
		
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">
					org.hibernate.dialect.MySQL5InnoDBDialect
				</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.hbm2ddl.auto">update</prop>
			</props>
		</property>
	</bean>
	<bean id="hibernateTemple"
		class="org.springframework.orm.hibernate3.HibernateTemplate">
		<property name="sessionFactory" ref="sessionFactory"></property>
	</bean>
	<bean id="userDaoImpl" class="impl.UserDaoImpl">
		<property name="hibernateTemplate" ref="hibernateTemple" />
	</bean>
	<bean id="serverce" class="serverce.Proccess">
		<property name="dao" ref="userDaoImpl"></property>
	</bean>
	<bean id="adduserAction" class="actions.AddUserAction" scope="request">
		<property name="serverce" ref="serverce"></property>
	</bean>
	<bean id="transactionManager"
		class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory"></property>
	</bean>
	<tx:advice id="daoTransAdvice">
		<tx:attributes>
			<tx:method name="save" isolation="DEFAULT" propagation="REQUIRED"/>
			<tx:method name="delete" isolation="DEFAULT" propagation="REQUIRED" />
			<tx:method name="update" isolation="DEFAULT" propagation="REQUIRED" />
			<tx:method name="find*" isolation="DEFAULT" read-only="true"
				propagation="REQUIRED" />
		</tx:attributes>

	</tx:advice>
	<tx:advice id="serverceAdvice">
		<tx:attributes>
			<tx:method name="serverce*" isolation="DEFAULT" propagation="REQUIRED" />
		</tx:attributes>
	</tx:advice>
	<aop:config>
		<aop:pointcut expression="execution(* DAO.*.*(..))"
			id="daoPointcut" />
		<aop:pointcut expression="execution(* serverce.*.serverce(..))"
			id="servercePointcut" />
		<aop:advisor advice-ref="daoTransAdvice"
			pointcut-ref="daoPointcut" />
		<aop:advisor advice-ref="serverceAdvice"
			pointcut-ref="servercePointcut" />
	</aop:config>
</beans>

2 第一 个错误分析：

错误示例-

我们先看控制台显示的错误：

java.lang.RuntimeException: java.lang.RuntimeException: com.opensymphony.xwork2.inject.DependencyException: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=java.lang.String, name='actionPackages'] in public void org.apache.struts2.config.ClasspathPackageProvider.setActionPackages(java.lang.String).
   at com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:132)
   at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)
   at com.opensymphony.xwork2.inject.ContainerImpl.getInstance(ContainerImpl.java:507)
   at com.opensymphony.xwork2.inject.ContainerImpl$8.call(ContainerImpl.java:540)
   at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:574)
   at com.opensymphony.xwork2.inject.ContainerImpl.getInstance(ContainerImpl.java:538)
   at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:198)
   at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)
   at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:360)
   at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:403)
   at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:190)
   at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)
   at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
   at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:620)
   at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
   at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1233)
   at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
   at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:460)
   at org.mortbay.jetty.plugin.Jetty6PluginWebAppContext.doStart(Jetty6PluginWebAppContext.java:124)
   at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
   at org.mortbay.jetty.plugin.AbstractJettyRunMojo.restartWebApp(AbstractJettyRunMojo.java:441)
   at org.mortbay.jetty.plugin.AbstractJettyRunMojo$1.filesChanged(AbstractJettyRunMojo.java:402)
   at org.mortbay.util.Scanner.reportBulkChanges(Scanner.java:486)
   at org.mortbay.util.Scanner.reportDifferences(Scanner.java:352)
   at org.mortbay.util.Scanner.scan(Scanner.java:280)
   at org.mortbay.util.Scanner$1.run(Scanner.java:232)
   at java.util.TimerThread.mainLoop(Timer.java:512)
   at java.util.TimerThread.run(Timer.java:462)
Caused by: java.lang.RuntimeException: com.opensymphony.xwork2.inject.DependencyException: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=java.lang.String, name='actionPackages'] in public void org.apache.struts2.config.ClasspathPackageProvider.setActionPackages(java.lang.String).
   at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:495)
   at com.opensymphony.xwork2.inject.ContainerImpl$7.call(ContainerImpl.java:532)
   at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:581)
   at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:530)
   at com.opensymphony.xwork2.config.impl.LocatableFactory.create(LocatableFactory.java:32)
   at com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:130)
   ... 27 more
Caused by: com.opensymphony.xwork2.inject.DependencyException: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=java.lang.String, name='actionPackages'] in public void org.apache.struts2.config.ClasspathPackageProvider.setActionPackages(java.lang.String).
   at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMembers(ContainerImpl.java:144)
   at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMethods(ContainerImpl.java:113)
   at com.opensymphony.xwork2.inject.ContainerImpl.addInjectors(ContainerImpl.java:90)
   at com.opensymphony.xwork2.inject.ContainerImpl$1.create(ContainerImpl.java:71)
   at com.opensymphony.xwork2.inject.ContainerImpl$1.create(ContainerImpl.java:69)
   at com.opensymphony.xwork2.inject.util.ReferenceCache$CallableCreate.call(ReferenceCache.java:150)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
   at com.opensymphony.xwork2.inject.util.ReferenceCache.internalCreate(ReferenceCache.java:76)
   at com.opensymphony.xwork2.inject.util.ReferenceCache.get(ReferenceCache.java:116)
   at com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.<init>(ContainerImpl.java:348)
   at com.opensymphony.xwork2.inject.ContainerImpl$5.create(ContainerImpl.java:305)
   at com.opensymphony.xwork2.inject.ContainerImpl$5.create(ContainerImpl.java:304)
   at com.opensymphony.xwork2.inject.util.ReferenceCache$CallableCreate.call(ReferenceCache.java:150)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
   at com.opensymphony.xwork2.inject.util.ReferenceCache.internalCreate(ReferenceCache.java:76)
   at com.opensymphony.xwork2.inject.util.ReferenceCache.get(ReferenceCache.java:116)
   at com.opensymphony.xwork2.inject.ContainerImpl.getConstructor(ContainerImpl.java:594)
   at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:491)
   ... 32 more
Caused by: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=java.lang.String, name='actionPackages'] in public void org.apache.struts2.config.ClasspathPackageProvider.setActionPackages(java.lang.String).
   at com.opensymphony.xwork2.inject.ContainerImpl.createParameterInjector(ContainerImpl.java:235)
   at com.opensymphony.xwork2.inject.ContainerImpl.getParametersInjectors(ContainerImpl.java:225)
   at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.<init>(ContainerImpl.java:287)
   at com.opensymphony.xwork2.inject.ContainerImpl$3.create(ContainerImpl.java:117)
   at com.opensymphony.xwork2.inject.ContainerImpl$3.create(ContainerImpl.java:115)
   at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMembers(ContainerImpl.java:141)
   ... 51 more
2009-03-29 11:23:51.305::WARN: Failed startup of context org.mortbay.jetty.plugin.Jetty6PluginWebAppContext@8932e8{/ssh,D:"workplace"ssh"src"main"webapp}
java.lang.RuntimeException: java.lang.RuntimeException: com.opensymphony.xwork2.inject.DependencyException: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=java.lang.String, name='actionPackages'] in public void org.apache.struts2.config.ClasspathPackageProvider.setActionPackages(java.lang.String).
   at com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:132)
   at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)
   at com.opensymphony.xwork2.inject.ContainerImpl.getInstance(ContainerImpl.java:507)
   at com.opensymphony.xwork2.inject.ContainerImpl$8.call(ContainerImpl.java:540)
   at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:574)
   at com.opensymphony.xwork2.inject.ContainerImpl.getInstance(ContainerImpl.java:538)
   at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:198)
   at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)
   at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:360)
   at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:403)
   at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:190)
   at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)
   at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
   at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:620)
   at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
   at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1233)
   at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
   at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:460)
   at org.mortbay.jetty.plugin.Jetty6PluginWebAppContext.doStart(Jetty6PluginWebAppContext.java:124)
   at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
   at org.mortbay.jetty.plugin.AbstractJettyRunMojo.restartWebApp(AbstractJettyRunMojo.java:441)
   at org.mortbay.jetty.plugin.AbstractJettyRunMojo$1.filesChanged(AbstractJettyRunMojo.java:402)
   at org.mortbay.util.Scanner.reportBulkChanges(Scanner.java:486)
   at org.mortbay.util.Scanner.reportDifferences(Scanner.java:352)
   at org.mortbay.util.Scanner.scan(Scanner.java:280)
   at org.mortbay.util.Scanner$1.run(Scanner.java:232)
   at java.util.TimerThread.mainLoop(Timer.java:512)
   at java.util.TimerThread.run(Timer.java:462)
Caused by: java.lang.RuntimeException: com.opensymphony.xwork2.inject.DependencyException: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=java.lang.String, name='actionPackages'] in public void org.apache.struts2.config.ClasspathPackageProvider.setActionPackages(java.lang.String).
   at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:495)
   at com.opensymphony.xwork2.inject.ContainerImpl$7.call(ContainerImpl.java:532)
   at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:581)
   at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:530)
   at com.opensymphony.xwork2.config.impl.LocatableFactory.create(LocatableFactory.java:32)
   at com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:130)
   ... 27 more
Caused by: com.opensymphony.xwork2.inject.DependencyException: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=java.lang.String, name='actionPackages'] in public void org.apache.struts2.config.ClasspathPackageProvider.setActionPackages(java.lang.String).
   at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMembers(ContainerImpl.java:144)
   at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMethods(ContainerImpl.java:113)
   at com.opensymphony.xwork2.inject.ContainerImpl.addInjectors(ContainerImpl.java:90)
   at com.opensymphony.xwork2.inject.ContainerImpl$1.create(ContainerImpl.java:71)
   at com.opensymphony.xwork2.inject.ContainerImpl$1.create(ContainerImpl.java:69)
   at com.opensymphony.xwork2.inject.util.ReferenceCache$CallableCreate.call(ReferenceCache.java:150)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
   at com.opensymphony.xwork2.inject.util.ReferenceCache.internalCreate(ReferenceCache.java:76)
   at com.opensymphony.xwork2.inject.util.ReferenceCache.get(ReferenceCache.java:116)
   at com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.<init>(ContainerImpl.java:348)
   at com.opensymphony.xwork2.inject.ContainerImpl$5.create(ContainerImpl.java:305)
   at com.opensymphony.xwork2.inject.ContainerImpl$5.create(ContainerImpl.java:304)
   at com.opensymphony.xwork2.inject.util.ReferenceCache$CallableCreate.call(ReferenceCache.java:150)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
   at com.opensymphony.xwork2.inject.util.ReferenceCache.internalCreate(ReferenceCache.java:76)
   at com.opensymphony.xwork2.inject.util.ReferenceCache.get(ReferenceCache.java:116)
   at com.opensymphony.xwork2.inject.ContainerImpl.getConstructor(ContainerImpl.java:594)
   at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:491)
   ... 32 more
Caused by: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=java.lang.String, name='actionPackages'] in public void org.apache.struts2.config.ClasspathPackageProvider.setActionPackages(java.lang.String).
   at com.opensymphony.xwork2.inject.ContainerImpl.createParameterInjector(ContainerImpl.java:235)
[INFO] Restart completed at Sun Mar 29 11:23:51 CST 2009
   at com.opensymphony.xwork2.inject.ContainerImpl.getParametersInjectors(ContainerImpl.java:225)
   at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.<init>(ContainerImpl.java:287)
   at com.opensymphony.xwork2.inject.ContainerImpl$3.create(ContainerImpl.java:117)
   at com.opensymphony.xwork2.inject.ContainerImpl$3.create(ContainerImpl.java:115)
   at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMembers(ContainerImpl.java:141)
   ... 51 more
这个错误是因为我们多加了一个包，我们把struts2-codebehind-plugin-2.1.6.jar去掉就好了

关于struts2-codebehind-plugin包的介绍请大家连接——http://www.iteye.com/topic/155425

这个博客有详细的讲解，这个包主要就是解决struts零配置的问题，需要注意的是，在做零配置时，需要建actionPackages时一定要有action的后缀或前缀，如:xxactions;

若是在这个包的类不想继承ActionSupport，必须的在类名的后缀上加上“Action”

3 第二个错误分析

错误示例：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'daoTransAdvice': Cannot resolve reference to bean 'transactionManager' while setting bean property 'transactionManager'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'transactionManager' is defined at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:275) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:104) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1245) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1010) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:472) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409) at java.security.AccessController.doPrivileged(Native Method) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381) at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3830) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4337) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:566) 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 org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)

从上面的报的异常可以看出是我们事件管理器出错了，说的是用了错误的命名，我们查看下applicationcontext.xml有关事件管理器的配置：

我们把上面的这段配置改为：

这样就解决了！

4 第三个错误

错误示例：

这个错误是在我们访问时在浏览器上报的错误如下:

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. org.springframework.orm.hibernate3.HibernateTemplate.checkWriteOperationAllowed(HibernateTemplate.java:1182) org.springframework.orm.hibernate3.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:692) org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:419) org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374) org.springframework.orm.hibernate3.HibernateTemplate.save(HibernateTemplate.java:690) impl.UserDaoImpl.save(UserDaoImpl.java:13) serverce.Proccess.serverce(Proccess.java:21) actions.AddUserAction.execute(AddUserAction.java:31) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:440) com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:279) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242) com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:163) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:249) org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:148) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:93) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:128) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) org.apache.struts2.interceptor.ProfilingActivationInterceptor.intercept(ProfilingActivationInterceptor.java:104) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:148) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:128) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52) org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:468) org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395) org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

从上面的报的异常我们可以隐约可以了解到时session出问题，这个session不是request上的session,而是hibernate的session，这个原因是因为我们在使用ssH的时候，会开启OpenSessionInViewFilter来阻止延迟加载的错误，但是在我们开启OpenSessionInViewFilter这个过滤器的时候FlushMode就已经被默认设置为了MANUAL，如果FlushMode是MANUAL或NEVEL,在操作过程中 hibernate会将事务设置为readonly，hibernate由于设置了延迟加载，在action中并没有真正地查询数据，当跳到jsp页面上要显示数据时，hibernate中的session却已经关闭，导致数据无法显示。

我们先看出问题的地方：

我们先看两个配置，比较一下

web.xml--1

<listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <filter> <filter-name>lazyload</filter-name> <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class> </filter> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> </filter> <filter-mapping> <filter-name>lazyload</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>

web.xml--2

<listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <filter> <filter-name>lazyload</filter-name> <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class> <init-param> <param-name>flushMode</param-name> <param-value>AUTO</param-value> </init-param> </filter> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> </filter> <filter-mapping> <filter-name>lazyload</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern>

从上可以看出我们直接修改OpenSessionInViewFilter过滤器的配置，配置过滤器的时候配置时候直接指定flushMode，在web.xml文件中添加如下代码：

<filter> <filter-name>lazyload</filter-name> <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class> <init-param> <param-name>flushMode</param-name> <param-value>AUTO</param-value> </init-param> </filter>

问题就会迎刃而解了，也就选用我们的配置2。

3 第四个错误分析

错误示例：

我们在访问某个资源时有以下错误输出：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'adduserAction': Scope 'request' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request. at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:312) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:881) at com.opensymphony.xwork2.spring.SpringObjectFactory.getClassInstance(SpringObjectFactory.java:204) at org.apache.struts2.components.ServletUrlRenderer.renderFormUrl(ServletUrlRenderer.java:145) at org.apache.struts2.components.Form.populateComponentHtmlId(Form.java:228) at org.apache.struts2.components.UIBean.evaluateParams(UIBean.java:784) at org.apache.struts2.components.ClosingUIBean.start(ClosingUIBean.java:57)

分析：

从上可以看出我们的说的是我们的bean作用域错误，

我们的spring 的bean一般默认作用域为：

作用域将对Bean的生命周期和创建方式产生影响.

singleton 在spring IOC容器中仅存在一个Bean实例,Bean以单实例的方式存在.

prototype 每次从容器中调用Bean时,都返回一个新的实例,即每次调用getBean()

时,相当于执行new XxxBean()的操作.

request 每次HTTP请求都会创建一个新的Bean,该作用域仅适用于

webApplicationContext环境.

session 同一个HTTP session共享一个Bean,不同HTTP session使用不同的Bean

,该作用域仅适用于webApplicationContext环境.

globalSession 同一个全局session共享一个Bean,一般用于portlet应用环境,该作用域

仅适用于webApplicationContext环境.

在低版本的spring中,由于只有两个Bean作用域,所以采用singleton="true|false"的配置方式,spring2.0

为了向后兼容,依旧支持这种配置方式.不过,spring2.0推荐采用新的配置方式:scope="<作用域类型>"

问题：查看了applicationcotext.xml配置发现

</bean> <bean id="adduserAction" class="actions.AddUserAction" scope="request"> <property name="serverce" ref="serverce"></property> </bean>

在这个bean中作用域是“request”，着说明我们得扩展我们的作用域，负责就找不到，而扩展作用域是在“RequestContextListener”的这个类中做的，确切的说他是个listener,一般listener是需要在web.xml中配置的，看来是没有配置这个listener，我们来查看web.xml